.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build-and-test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        rust: [stable]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+      - name: Cargo cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: |
+            . -> target
+      - name: Build
+        run: cargo build --workspace --verbose
+      - name: Run tests
+        run: cargo test --workspace --verbose
+      - name: Build release
+        run: cargo build --workspace --release
+      - name: Package artifacts
+        run: |
+          mkdir -p dist
+          tar -czf dist/bread-${{ matrix.os }}.tgz target/release/breadd target/release/bread-cli
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: bread-${{ matrix.os }}
+          path: dist/*.tgz

.gitignore

@@ -1,16 +1,39 @@
-# ---> Rust
+# Rust build artifacts
-# Generated by Cargo
-# will have compiled files and executables
-debug/
 target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# Editor and IDE files
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+.vscode/
-Cargo.lock
+.idea/
+*.swp
+*.swo
+*~
 
-# These are backup files generated by rustfmt
+# OS artifacts
-**/*.rs.bk
+.DS_Store
+Thumbs.db
+desktop.ini
 
-# MSVC Windows builds of rustc generate these, which store debugging information
+# Environment and secrets
-*.pdb
+.env
+.env.*
+*.env
+*.pem
+*.key
+*.p12
+secrets/
 
+# Log files
+*.log
+logs/
+
+# Runtime files
+*.sock
+*.pid
+
+# Internal project docs and spec files kept out of public history
+Overview.md
+DAEMON.md
+LUA_RUNTIME.md
+CLAUDE_SPEC.md
+.claude
+CLAUDE.md

Cargo.toml

@@ -0,0 +1,21 @@
+[workspace]
+members = [
+    "bread-shared",
+    "breadd",
+    "bread-cli",
+    "bread-sync",
+]
+resolver = "2"
+
+[workspace.dependencies]
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+tokio = { version = "1.40", features = ["full"] }
+anyhow = "1.0"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+git2 = "0.18"
+dirs = "5.0"
+chrono = { version = "0.4", features = ["serde"] }
+tempfile = "3"
+glob = "0.3"

Documentation.md

@@ -0,0 +1,927 @@
+# Bread Documentation
+
+## Contents
+
+- [Overview](#overview)
+- [Getting started](#getting-started)
+- [Your first module](#your-first-module)
+- [Run, reload, and watch](#run-reload-and-watch)
+- [Modules: install and manage](#modules-install-and-manage)
+- [Sync: snapshot and restore](#sync-snapshot-and-restore)
+- [Debugging tips](#debugging-tips)
+- [Dictionary: Lua API](#dictionary-lua-api)
+  - [Bluetooth](#bluetooth)
+- [Dictionary: Built-in modules](#dictionary-built-in-modules)
+- [Dictionary: Event reference](#dictionary-event-reference)
+- [Dictionary: Runtime state schema](#dictionary-runtime-state-schema)
+- [Dictionary: IPC protocol](#dictionary-ipc-protocol)
+
+## Overview
+
+Bread is a reactive automation fabric for Linux desktops. The daemon (`breadd`) normalizes external signals into semantic events, maintains runtime state, and dispatches events to Lua modules that implement automation.
+
+- **Daemon** (`breadd`) — long-running Rust process; source of truth for runtime state
+- **Lua runtime** — dedicated thread inside the daemon; automation logic lives here
+- **CLI** (`bread`) — talks to the daemon over a Unix socket
+
+Adapters currently supported: Hyprland compositor IPC, Linux udev/netlink, UPower/sysfs power, rtnetlink/sysfs network, and BlueZ Bluetooth.
+
+If you are new to Bread, start with the quick walkthrough below, then jump to the full dictionary when you need exact API details.
+
+## Getting started
+
+### 1) Create a minimal config
+
+- Daemon config: `~/.config/bread/breadd.toml` (all values optional)
+- Lua entry point: `~/.config/bread/init.lua`
+- Lua modules: `~/.config/bread/modules/`
+
+### 2) Minimal `init.lua`
+
+```lua
+bread.on("bread.system.startup", function(event)
+    bread.profile.activate("default")
+    bread.log("bread started on " .. bread.machine.name())
+end)
+```
+
+### 3) Start the daemon
+
+```bash
+systemctl --user start breadd
+
+# Or directly:
+breadd
+```
+
+### 4) Check that it's running
+
+```bash
+bread ping
+bread doctor
+```
+
+## Your first module
+
+Create a file at `~/.config/bread/modules/hello.lua`. It is discovered and loaded automatically after `init.lua`.
+
+```lua
+local M = bread.module({ name = "hello", version = "0.1.0" })
+
+function M.on_load()
+    bread.log("hello from bread on " .. bread.machine.name())
+
+    bread.on("bread.device.*", function(event)
+        bread.log("device event: " .. event.event)
+    end)
+end
+
+return M
+```
+
+Key rules:
+
+- Every module must call `bread.module` exactly once at the top level.
+- Register subscriptions inside `M.on_load` so they are cleaned up properly on hot reload.
+- Use `bread.log` early to verify handlers are firing.
+
+## Run, reload, and watch
+
+```bash
+# Hot-reload the Lua runtime after editing config
+bread reload
+
+# Watch for file changes and reload automatically
+bread reload --watch
+```
+
+If any module fails to load, `bread reload` prints the error with a full Lua stack trace. The daemon stays running — fix the file and reload again.
+
+## Modules: install and manage
+
+Modules are Lua packages installed to `~/.config/bread/modules/`. The CLI manages the install lifecycle.
+
+```bash
+# Install from GitHub (downloads and extracts the default branch tarball)
+bread modules install github:someuser/bread-wifi
+
+# Install from a local directory
+bread modules install ~/src/my-module
+
+# Install a specific ref
+bread modules install github:someuser/bread-wifi@v1.2.0
+
+# List installed modules and their daemon status
+bread modules list
+
+# Show full manifest for one module
+bread modules info bread-wifi
+
+# Re-install all GitHub-sourced modules (pick up upstream changes)
+bread modules update
+
+# Remove a module
+bread modules remove bread-wifi
+bread modules remove bread-wifi --yes   # skip confirmation
+```
+
+Each installed module has a `bread.module.toml` manifest:
+
+```toml
+name = "wifi"
+version = "1.0.0"
+description = "WiFi management for Bread"
+author = "someuser"
+source = "github:someuser/bread-wifi"
+installed_at = "2026-01-01T00:00:00Z"
+```
+
+## Sync: snapshot and restore
+
+Bread sync snapshots your config, dotfiles, and installed packages into a local Git repository. Use `export`/`import` to move state between machines — no git remote required.
+
+```bash
+# First-time setup (remote optional)
+bread sync init
+bread sync init --remote git@github.com:you/bread-config.git
+
+# Commit local snapshot
+bread sync push
+bread sync push --message "before reinstall"
+
+# Apply snapshot to this machine
+bread sync pull
+
+# Also reinstall packages from snapshot
+bread sync pull --install-packages
+
+# See what has changed
+bread sync status
+bread sync diff
+
+# List known machines
+bread sync machines
+```
+
+### Portable export/import
+
+`export` creates a self-contained snapshot directory or `.tar.gz` — no git auth needed.
+
+```bash
+# Create a portable snapshot (defaults to ./bread-export-<machine>-<date>.tar.gz)
+bread sync export
+
+# Export to a specific path
+bread sync export --output ~/backups/bread.tar.gz
+bread sync export --output /mnt/usb/bread-snapshot/   # directory
+
+# Apply a snapshot on another machine
+bread sync import bread-export-hermes-2026-05-16.tar.gz
+bread sync import /mnt/usb/bread-snapshot/
+
+# Also install packages from the snapshot
+bread sync import bread-export.tar.gz --install-packages
+
+# Skip cloning git repos back to their original locations
+bread sync import bread-export.tar.gz --no-clone-repos
+
+# Skip confirmation prompt
+bread sync import bread-export.tar.gz --yes
+```
+
+Each export snapshot includes:
+
+| Directory | Contents |
+|-----------|----------|
+| `bread/` | `~/.config/bread/` (your Bread config) |
+| `configs/` | Common app configs (hypr, nvim, kitty, waybar, fish, etc.) |
+| `dotfiles/` | Individual files: `.gitconfig`, `.zshrc`, `.zprofile`, `.zshenv`, SSH config, etc. |
+| `local-bin/` | `~/.local/bin/` scripts (non-symlink, <512 KB) |
+| `local-fonts/` | `~/.local/share/fonts/` |
+| `systemd/` | `~/.config/systemd/user/` units |
+| `system/` | System files: udev rules, modprobe, sysctl, NetworkManager, bluetooth (root-only paths skipped unless run with sudo) |
+| `packages/` | Package lists (pacman.txt, pip.txt, cargo.txt, npm.txt) |
+| `machines/` | Per-machine profile with tags and last-sync time |
+| `manifest.toml` | Path map for exact restoration on import |
+| `restore.sh` | Shell script for manual restore (system files shown as sudo commands) |
+
+**Git repository tracking:** at export time, all git repositories with remotes found under `~`, `~/Projects`, `~/Documents`, and `~/.config` are auto-committed and pushed. Their remote URLs and branches are recorded in the manifest. On import, `--no-clone-repos` suppresses cloning them back.
+
+Configure sync in `~/.config/bread/sync.toml`:
+
+```toml
+[remote]
+url = "git@github.com:you/bread-config.git"
+branch = "main"
+
+[machine]
+name = "hermes"
+tags = ["laptop", "battery"]
+
+[packages]
+enabled = true
+managers = ["pacman", "pip", "cargo"]
+
+[delegates]
+include = ["~/.config/nvim", "~/.config/waybar"]
+exclude = ["**/.git", "**/*.cache"]
+```
+
+## Debugging tips
+
+- Run `bread events` to see live normalized events.
+- Run `bread state` to see full runtime state as JSON.
+- Run `bread doctor` to check adapter and module health.
+- Log event payloads with `bread.log(tostring(event.data))`.
+- Use `RUST_LOG=debug breadd` for verbose daemon output.
+
+---
+
+## Dictionary: Lua API
+
+Every API is exposed through the `bread` global table.
+
+### Module declaration
+
+Every module must call `bread.module` exactly once at the top level.
+
+```lua
+local M = bread.module({
+    name    = "my.module",
+    version = "0.1.0",
+    after   = { "bread.devices" },   -- optional: load after this module
+})
+
+return M
+```
+
+If a module does not call `bread.module`, it fails to load and is marked as a load error.
+
+### Events
+
+#### `bread.on(pattern, fn) -> id`
+Subscribe to matching events. Returns a numeric subscription ID.
+
+```lua
+local id = bread.on("bread.device.*", function(event)
+    -- event.event   → the full event name string
+    -- event.data    → table of event-specific fields
+    -- event.source  → adapter that produced it ("Udev", "Hyprland", etc.)
+    bread.log(event.event)
+end)
+```
+
+#### `bread.once(pattern, fn) -> id`
+Subscribe once. The handler is removed after the first match.
+
+#### `bread.filter(pattern, fn, opts) -> id`
+Subscribe with a predicate. `opts` must contain a `filter` function:
+
+```lua
+bread.filter("bread.device.*", function(event)
+    bread.exec("xset r rate 200 40")
+end, {
+    filter = function(event)
+        return event.data and event.data.class == "keyboard"
+    end,
+})
+```
+
+#### `bread.off(id)`
+Unsubscribe an event handler or state watch by ID.
+
+#### `bread.emit(event, data)`
+Emit a custom event into the system pipeline. Useful for cross-module communication.
+
+#### `bread.wait(pattern, opts) -> event | nil`
+Coroutine-only helper that suspends until a matching event arrives.
+
+```lua
+bread.spawn(function()
+    local event = bread.wait("bread.device.dock.connected", { timeout = 5000 })
+    if event then
+        bread.log("dock arrived")
+    end
+end)
+```
+
+#### `bread.spawn(fn)`
+Spawn a coroutine and surface errors if it fails. Required for using `bread.wait`.
+
+### State
+
+#### `bread.state.get(path)`
+Read a state subtree by dotted path.
+
+```lua
+local monitors = bread.state.get("monitors")
+local online   = bread.state.get("network.online")
+```
+
+#### Typed shorthands
+
+```lua
+bread.state.monitors()
+bread.state.active_workspace()
+bread.state.active_window()
+bread.state.devices()
+bread.state.power()
+bread.state.network()
+bread.state.profile()
+```
+
+#### `bread.state.watch(path, fn) -> id`
+Watch a state path for changes. The callback receives `(new_value, old_value)`.
+
+```lua
+bread.state.watch("power.ac_connected", function(new_val, old_val)
+    if new_val then
+        bread.notify("AC connected")
+    end
+end)
+```
+
+### Profiles
+
+#### `bread.profile.activate(name)`
+Activate a named profile. Emits `bread.profile.activated` over IPC.
+
+### Execution
+
+#### `bread.exec(cmd)`
+Run a shell command. Fire-and-forget (async, does not block Lua).
+
+### Notifications
+
+#### `bread.notify(message, opts)`
+Send a desktop notification via `notify-send`.
+
+Options:
+
+| Key | Type | Default |
+|-----|------|---------|
+| `title` | string | `"bread"` |
+| `urgency` | string | from config |
+| `timeout` | ms | from config |
+| `icon` | string | none |
+
+Calling `bread.notify` emits `bread.notify.sent` with `{ title, message, urgency }`.
+
+### Timers
+
+#### `bread.after(delay_ms, fn) -> id`
+Run once after a delay.
+
+#### `bread.every(interval_ms, fn) -> id`
+Run on a repeating interval.
+
+#### `bread.cancel(id)`
+Cancel a timer created by `after` or `every`. Timers are also cancelled automatically on reload.
+
+### Utilities
+
+#### `bread.debounce(delay_ms, fn) -> wrapped_fn`
+Returns a wrapper that fires only after `delay_ms` of quiet time.
+
+```lua
+local fn = bread.debounce(200, function(event)
+    reconfigure_monitors()
+end)
+bread.on("bread.monitor.**", fn)
+```
+
+#### `bread.log(msg)` / `bread.warn(msg)` / `bread.error(msg)`
+Logging helpers. Accept any Lua value (coerced via `tostring`).
+
+### Machine and filesystem
+
+#### `bread.machine.name() -> string`
+Returns the machine name from `sync.toml`. Falls back to the system hostname if sync is not initialized.
+
+#### `bread.machine.tags() -> string[]`
+Returns the tags array from `sync.toml`, or `{}` if sync is not initialized.
+
+#### `bread.machine.has_tag(tag) -> bool`
+Returns true if the machine has the given tag.
+
+#### `bread.fs.write(path, content)`
+Write a file. Creates parent directories as needed. `~` is expanded.
+
+#### `bread.fs.read(path) -> string | nil`
+Read a file. Returns `nil` if the file does not exist. `~` is expanded.
+
+#### `bread.fs.exists(path) -> bool`
+Returns true if the path exists. `~` is expanded.
+
+#### `bread.fs.expand(path) -> string`
+Expand `~` to the home directory.
+
+### Hyprland
+
+The `bread.hyprland` namespace provides compositor bindings.
+
+```lua
+-- Dispatch a Hyprland command
+bread.hyprland.dispatch("workspace", "2")
+bread.hyprland.dispatch("exec", "kitty")
+
+-- Set a keyword
+bread.hyprland.keyword("monitor", "HDMI-A-1, 2560x1440, 0x0, 1")
+
+-- Query compositor state (returns deserialized Lua tables)
+local win        = bread.hyprland.active_window()
+local monitors   = bread.hyprland.monitors()
+local workspaces = bread.hyprland.workspaces()
+local clients    = bread.hyprland.clients()
+
+-- Subscribe to raw Hyprland events (bypasses normalization)
+bread.hyprland.on_raw("activewindow", function(raw)
+    -- raw payload includes: kind, raw (original string), data
+end)
+```
+
+### Bluetooth
+
+The `bread.bluetooth` namespace provides control over the local Bluetooth adapter and its paired devices via BlueZ D-Bus. All functions degrade gracefully when BlueZ is unavailable — control functions log a warning and return `nil`, query functions return `nil`.
+
+#### `bread.bluetooth.power(enabled)`
+Power the Bluetooth adapter on (`true`) or off (`false`). Fire-and-forget.
+
+#### `bread.bluetooth.powered() -> bool | nil`
+Returns the current power state of the adapter, or `nil` if unavailable.
+
+```lua
+if bread.bluetooth.powered() then
+    bread.log("Bluetooth is on")
+end
+```
+
+#### `bread.bluetooth.connect(address)`
+Connect to a paired device by MAC address. Fire-and-forget — the result is delivered as a `bread.device.connected` event when the connection succeeds.
+
+```lua
+bread.bluetooth.connect("AA:BB:CC:DD:EE:FF")
+```
+
+#### `bread.bluetooth.disconnect(address)`
+Disconnect from a device by MAC address. Fire-and-forget — delivered as `bread.device.disconnected`.
+
+#### `bread.bluetooth.scan(enabled)`
+Start (`true`) or stop (`false`) device discovery.
+
+#### `bread.bluetooth.devices() -> table | nil`
+Returns all devices known to BlueZ as an array of tables. Returns `nil` if BlueZ is unavailable.
+
+```lua
+local devs = bread.bluetooth.devices()
+if devs then
+    for _, dev in ipairs(devs) do
+        bread.log(dev.name .. " " .. dev.address
+            .. (dev.connected and " [connected]" or ""))
+    end
+end
+```
+
+Each device table:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `address` | string | Bluetooth MAC address, e.g. `"AA:BB:CC:DD:EE:FF"` |
+| `name` | string | Device name from BlueZ (Alias or Name property) |
+| `connected` | bool | Whether the device is currently connected |
+| `paired` | bool | Whether the device is paired |
+
+#### Example: auto-connect headphones on AC power
+
+```lua
+local M = bread.module({ name = "headphones", version = "1.0.0" })
+local HEADPHONES = "AA:BB:CC:DD:EE:FF"
+
+function M.on_load()
+    bread.state.watch("power.ac_connected", function(ac)
+        if ac then
+            bread.bluetooth.power(true)
+            bread.bluetooth.connect(HEADPHONES)
+        end
+    end)
+end
+
+return M
+```
+
+#### Example: turn off Bluetooth on battery
+
+```lua
+bread.state.watch("power.ac_connected", function(ac)
+    bread.bluetooth.power(ac)
+end)
+```
+
+### Module lifecycle hooks
+
+All hooks are optional.
+
+```lua
+function M.on_load()
+    -- Called after the module loads. Register subscriptions here.
+end
+
+function M.on_reload()
+    -- Called after a hot reload completes across all modules.
+end
+
+function M.on_unload()
+    -- Called before the Lua instance is dropped.
+end
+
+function M.on_error(err)
+    -- Called when a subscription handler in this module throws.
+    -- Return true to keep the subscription alive, false to cancel it.
+    return true
+end
+```
+
+### Module storage
+
+Survives hot reload; does not survive daemon restart.
+
+```lua
+M.store.set("last_profile", "docked")
+local value = M.store.get("last_profile")
+```
+
+Storage is scoped per module and is not shared across modules.
+
+---
+
+## Dictionary: Built-in modules
+
+Built-ins are loaded before user modules. Disable them via `[modules].disable` in the daemon config.
+
+### `bread.monitors`
+
+High-level declarative monitor event handlers.
+
+```lua
+local monitors = require("bread.monitors")
+
+monitors.layout("dock", function()
+    bread.exec("~/.config/bread/scripts/layout-dock.sh")
+end)
+
+monitors.on({
+    when     = "connected",
+    monitors = { "HDMI-A-1" },
+    run      = monitors.apply("dock"),
+})
+```
+
+| Function | Description |
+|----------|-------------|
+| `M.on(opts)` | Register a monitor workflow. `opts`: `when`, `monitors` (optional list), `run` (function or shell string) |
+| `M.layout(name, fn)` | Register a named layout function |
+| `M.apply(name) -> fn` | Returns a function that calls the named layout |
+
+`when` is one of `connected`, `disconnected`, `changed`.
+
+### `bread.devices`
+
+Device connection rules with name-based matching. This module handles hardware hotplug events from USB devices, monitors, and other peripherals.
+
+Device names are defined in `~/.config/bread/devices.lua` — the daemon resolves the name before dispatching events, so modules can match on stable user-defined names rather than raw hardware identifiers.
+
+```lua
+local devices = require("bread.devices")
+
+devices.on({
+    when   = "connected",
+    device = "keyboard",
+    run    = function(event)
+        bread.exec("xset r rate 200 40")
+    end,
+})
+
+devices.on({
+    when   = "connected",
+    device = "dock",
+    run    = "~/.config/bread/scripts/dock-connected.sh"
+})
+
+devices.on({
+    when = "disconnected",
+    name = "CalDigit",  -- pattern-matched against event.data.name
+    run  = function(event)
+        bread.log("Dock disconnected: " .. event.data.name)
+    end,
+})
+```
+
+#### Functions
+
+| Function | Description |
+|----------|-------------|
+| `M.on(opts)` | Register a device rule. See options below. |
+
+#### Device rule options
+
+```lua
+devices.on({
+    when   = "connected",              -- required: "connected" or "disconnected"
+    device = "keyboard",              -- optional: device name from devices.lua
+    name   = "Keychron",             -- optional: substring matched against device name
+    run    = function(event) ... end  -- required: function or shell string
+})
+```
+
+- `when` (required): One of `connected` or `disconnected`.
+- `device` (optional): Device name as defined in `devices.lua`. If specified, the rule only fires for devices with that name.
+- `name` (optional): Pattern that must be found in `event.data.name` (case-insensitive substring). Can be combined with `device` (both must match).
+- `run` (required): Function or shell string to run when the rule matches.
+
+The callback receives the full device event:
+```lua
+{
+  event = "bread.device.dock.connected",
+  data = {
+    id = "/sys/...",
+    device = "dock",       -- name resolved from devices.lua
+    name = "CalDigit TS4", -- raw device name from udev
+    subsystem = "usb",
+    vendor_id = "0x35f5",
+    product_id = "0x0104",
+    raw = { ... }          -- full udev properties
+  }
+}
+```
+
+#### Example: Keyboard configuration on connect
+
+```lua
+devices.on({
+    when   = "connected",
+    device = "keyboard",
+    run    = function(event)
+        bread.log("Keyboard connected: " .. event.data.name)
+        bread.exec("xset r rate 200 40")
+    end,
+})
+```
+
+#### Example: Dock-specific setup
+
+```lua
+-- devices.lua defines: { device = "dock", vendor_id = "35f5" }
+
+devices.on({
+    when   = "connected",
+    device = "dock",
+    run    = function(event)
+        bread.log("Dock connected")
+        bread.exec("~/.config/bread/scripts/dock-connected.sh")
+    end,
+})
+
+devices.on({
+    when   = "disconnected",
+    device = "dock",
+    run    = function(event)
+        bread.log("Dock disconnected")
+        bread.exec("~/.config/bread/scripts/dock-disconnected.sh")
+    end,
+})
+```
+
+### `bread.workspaces`
+
+Workspace-to-monitor assignment and app pinning.
+
+```lua
+local workspaces = require("bread.workspaces")
+
+workspaces.assign("1", "HDMI-A-1")
+workspaces.pin({ app = "Firefox", workspace = "2" })
+```
+
+| Function | Description |
+|----------|-------------|
+| `M.assign(workspace, monitor)` | Assign a workspace to a monitor |
+| `M.pin(opts)` | Pin an app class to a workspace. `opts`: `app`, `workspace` |
+| `M.apply_assignments()` | Apply all registered assignments via Hyprland dispatch |
+
+### `bread.binds`
+
+Runtime keybind management via Hyprland.
+
+```lua
+local binds = require("bread.binds")
+
+binds.add({
+    mods     = { "SUPER" },
+    key      = "Return",
+    dispatch = "exec",
+    args     = "kitty",
+})
+```
+
+| Function | Description |
+|----------|-------------|
+| `M.add(opts)` | Add a keybind. `opts`: `mods`, `key`, `dispatch`, `args` |
+| `M.remove(key)` | Remove a keybind by key |
+| `M.replace(key, opts)` | Remove and re-add a keybind |
+
+---
+
+## Dictionary: Event reference
+
+Events are delivered as a `BreadEvent`:
+
+```json
+{
+  "event": "bread.device.dock.connected",
+  "timestamp": 1710000000000,
+  "source": "Udev",
+  "data": {}
+}
+```
+
+### Pattern matching
+
+| Pattern | Matches |
+|---------|---------|
+| `bread.device.dock.connected` | Exact match only |
+| `bread.device.*` | One segment wildcard (does not cross `.`) |
+| `bread.device.**` | Any depth under `bread.device` |
+| `bread.monitor.?` | Single character within one segment |
+
+### Normalized events
+
+#### System
+
+| Event | Data |
+|-------|------|
+| `bread.system.startup` | `{}` |
+
+#### Devices (udev / Bluetooth)
+
+| Event | Data |
+|-------|------|
+| `bread.device.connected` | `{ id, device, name, vendor, vendor_id, product_id, subsystem, raw }` |
+| `bread.device.disconnected` | same |
+| `bread.device.<device>.connected` | `{ id, device }` |
+| `bread.device.<device>.disconnected` | `{ id, device }` |
+
+`device` is the name resolved from `~/.config/bread/devices.lua`. Devices that match no rule use `"unknown"`. The generic `bread.device.connected` event carries the full payload including `raw` udev properties; the named companion event carries only `id` and `device`.
+
+Both USB/udev devices and Bluetooth devices emit `bread.device.connected` / `bread.device.disconnected`. They can be distinguished by `event.data.subsystem`:
+
+| `subsystem` | Source | Unique identifier field |
+|-------------|--------|------------------------|
+| `"usb"`, `"input"`, etc. | udev | `vendor_id` + `product_id` |
+| `"bluetooth"` | BlueZ | `address` (MAC address) |
+
+#### Bluetooth (BlueZ)
+
+| Event | Data |
+|-------|------|
+| `bread.device.connected` | `{ id, device, name, address, subsystem: "bluetooth", raw }` |
+| `bread.device.disconnected` | same |
+| `bread.bluetooth.device.paired` | `{ id, name, address, subsystem: "bluetooth", raw }` |
+| `bread.bluetooth.device.unpaired` | `{ id, address, subsystem: "bluetooth", raw }` |
+
+`bread.bluetooth.device.paired` fires when BlueZ first learns about a device (new pairing or adapter restart). It does not mean the device is connected. `bread.device.connected` fires when the device profile actually connects.
+
+`name` may be `"unknown"` on `bread.device.connected` events emitted from `PropertiesChanged` signals, since BlueZ only includes changed properties. It is always populated on `bread.bluetooth.device.paired` and on events from the initial enumeration at startup.
+
+#### Hyprland
+
+| Event | Data |
+|-------|------|
+| `bread.workspace.changed` | raw payload |
+| `bread.workspace.created` | `{ workspace }` |
+| `bread.workspace.destroyed` | `{ workspace }` |
+| `bread.monitor.connected` | raw payload |
+| `bread.monitor.disconnected` | raw payload |
+| `bread.window.focus.changed` | raw payload |
+| `bread.window.focused` | `{ address }` |
+| `bread.window.opened` | `{ address, workspace, class, title }` |
+| `bread.window.closed` | `{ address }` |
+| `bread.window.moved` | `{ address, workspace }` |
+| `bread.hyprland.event` | `{ kind, raw, data }` (unhandled kinds) |
+
+#### Power
+
+| Event | Data |
+|-------|------|
+| `bread.power.ac.connected` | `{ ac_connected, battery_percent }` |
+| `bread.power.ac.disconnected` | `{ ac_connected, battery_percent }` |
+| `bread.power.battery.low` | `{ battery_percent }` |
+| `bread.power.battery.very_low` | `{ battery_percent }` |
+| `bread.power.battery.critical` | `{ battery_percent }` |
+| `bread.power.battery.full` | `{ battery_percent }` |
+| `bread.power.changed` | `{ ac_connected, battery_percent }` |
+
+#### Network
+
+| Event | Data |
+|-------|------|
+| `bread.network.connected` | `{ online, interfaces }` |
+| `bread.network.disconnected` | `{ online, interfaces }` |
+
+#### System events
+
+| Event | Data |
+|-------|------|
+| `bread.profile.activated` | `{ name }` |
+| `bread.notify.sent` | `{ title, message, urgency }` |
+| `bread.state.changed.<path>` | emitted by state watches |
+
+---
+
+## Dictionary: Runtime state schema
+
+`bread state` and `bread.state.get("")` return the full `RuntimeState`:
+
+```json
+{
+  "monitors": [
+    { "name": "HDMI-A-1", "connected": true, "resolution": null, "position": null }
+  ],
+  "workspaces": [
+    { "id": "1", "monitor": "HDMI-A-1" }
+  ],
+  "active_workspace": "1",
+  "active_window": "0x...",
+  "devices": {
+    "connected": [
+      {
+        "id": "/sys/...",
+        "name": "CalDigit TS4",
+        "device": "dock",
+        "subsystem": "usb",
+        "vendor_id": "0x35f5",
+        "product_id": "0x0104"
+      }
+    ]
+  },
+  "network": {
+    "interfaces": { "eth0": { "up": true } },
+    "online": true
+  },
+  "power": {
+    "ac_connected": true,
+    "battery_percent": 87,
+    "battery_low": false
+  },
+  "profile": {
+    "active": "default",
+    "history": [],
+    "profiles": {}
+  },
+  "modules": [
+    {
+      "name": "bread.monitors",
+      "status": "loaded",
+      "last_error": null,
+      "builtin": true,
+      "store": {}
+    }
+  ]
+}
+```
+
+`status` values: `loaded`, `load_error`, `not_found`, `degraded`, `disabled`.
+
+---
+
+## Dictionary: IPC protocol
+
+The daemon exposes a Unix socket at `$XDG_RUNTIME_DIR/bread/breadd.sock`. Messages are newline-delimited JSON.
+
+Request:
+
+```json
+{ "id": "1", "method": "state.get", "params": { "key": "monitors" } }
+```
+
+Response:
+
+```json
+{ "id": "1", "result": [ { "name": "HDMI-A-1", "connected": true } ] }
+```
+
+Available methods:
+
+| Method | Params | Description |
+|--------|--------|-------------|
+| `ping` | — | Connectivity check |
+| `health` | — | Version, uptime, PID, adapter status |
+| `state.get` | `key` (dotted path) | Read a value from `RuntimeState` |
+| `state.dump` | — | Return the full `RuntimeState` as JSON |
+| `modules.list` | — | List all loaded modules and their status |
+| `modules.reload` | — | Hot-reload the Lua runtime |
+| `profile.list` | — | List defined profiles |
+| `profile.activate` | `name` | Switch active profile |
+| `events.subscribe` | — | Upgrade to streaming mode; pushes events line by line |
+| `events.replay` | `since_ms` | Replay buffered events from the last N ms |
+| `emit` | `event`, `data` | Inject a synthetic event into the pipeline |
+| `sync.status` | — | Return sync init state: `{ initialized, machine?, remote? }` |

Examples.md

@@ -0,0 +1,187 @@
+# Bread Examples
+
+These examples show how to translate existing Hyprland automation into Bread's event-driven Lua runtime.
+
+Each snippet is designed to be drop-in friendly for a `~/.config/bread/modules/*.lua` file. Start with a new module file and `require` it from `~/.config/bread/init.lua`.
+
+## Example 1: Porting keyboard_and_display_watcher.sh (system script)
+
+Source inspiration: `~/.config/hypr/scripts/system/keyboard_and_display_watcher.sh`.
+
+This example covers two parts that port cleanly to Bread:
+
+- Start/stop the Redox layout viewer when the keyboard appears
+- Start/stop a display sync service when an external monitor appears
+
+```lua
+-- ~/.config/bread/modules/redox_and_display.lua
+local M = bread.module({ name = "redox_and_display", version = "1.0.0" })
+
+local PREVIEW_CMD = "/home/breadway/redox-layout-viewer/target/release/redox-layout-viewer"
+local APP_NAME = "redox-layout-vi"
+
+local function start_viewer()
+    bread.exec("pgrep -f '" .. APP_NAME .. "' >/dev/null || " .. PREVIEW_CMD .. " >/dev/null 2>&1 &")
+end
+
+local function stop_viewer()
+    bread.exec("pkill -f '" .. APP_NAME .. "' >/dev/null 2>&1 || true")
+end
+
+local function is_redox(event)
+    -- Inspect event.data.raw once to find stable identifiers in your environment.
+    -- Typical udev fields include id_vendor, id_model, id_vendor_id, id_model_id, and name.
+    local raw = event.data and event.data.raw or {}
+    local name = tostring(raw.name or "")
+    local vendor = tostring(raw.id_vendor or "")
+    local model = tostring(raw.id_model or "")
+
+    return name:lower():find("redox", 1, true)
+        or vendor:lower():find("redox", 1, true)
+        or model:lower():find("redox", 1, true)
+end
+
+local external_monitors = 0
+
+local function update_display_service()
+    if external_monitors > 0 then
+        bread.exec("systemctl --user start hypr-display-sync.service")
+    else
+        bread.exec("systemctl --user stop hypr-display-sync.service")
+    end
+end
+
+function M.on_load()
+    bread.on("bread.device.keyboard.connected", function(event)
+        if is_redox(event) then
+            start_viewer()
+        end
+    end)
+
+    bread.on("bread.device.keyboard.disconnected", function(event)
+        if is_redox(event) then
+            stop_viewer()
+        end
+    end)
+
+    bread.on("bread.monitor.connected", function(event)
+        local name = event.data and (event.data.name or event.data.raw) or ""
+        -- ignore internal panel (eDP-1) and count only externals
+        if not tostring(name):match("eDP%-1") then
+            external_monitors = external_monitors + 1
+            update_display_service()
+        end
+    end)
+
+    bread.on("bread.monitor.disconnected", function(event)
+        local name = event.data and (event.data.name or event.data.raw) or ""
+        if not tostring(name):match("eDP%-1") then
+            external_monitors = math.max(0, external_monitors - 1)
+            update_display_service()
+        end
+    end)
+end
+
+return M
+```
+
+Notes:
+
+- Use `bread.log(event.data.raw)` once to see your exact udev fields for matching.
+- This drops polling and relies on udev/Hyprland events.
+
+## Example 2: Porting autostart.lua
+
+Source inspiration: `~/.config/hypr/scripts/system/autostart.lua`.
+
+```lua
+-- ~/.config/bread/modules/autostart.lua
+local M = bread.module({ name = "autostart", version = "1.0.0" })
+
+local home = os.getenv("HOME") or "/home/breadway"
+local startup_commands = {
+    "wal -R",
+    home .. "/colorshell/build/colorshell",
+    "awww-daemon",
+    "awww restore",
+    home .. "/.config/hypr/scripts/system/keyboard_and_display_watcher.sh",
+    home .. "/.config/hypr/watch_hypr_scripts.sh",
+    "systemctl --user daemon-reload",
+    "systemctl --user start hypr-display-sync.service",
+    "systemctl --user start hyprpolkitagent",
+    "dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP",
+    "/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1",
+    "flatpak run dev.deedles.Trayscale",
+    "wificonf init",
+    "pkill -f hyprpaper",
+}
+
+function M.on_load()
+    bread.once("bread.system.startup", function()
+        for _, cmd in ipairs(startup_commands) do
+            bread.exec(cmd)
+        end
+    end)
+end
+
+return M
+```
+
+## Example 3: Porting display/monitors.lua
+
+Source inspiration: `~/.config/hypr/scripts/display/monitors.lua`.
+
+This uses Bread events and Hyprland keywords to update monitor layout when external displays change.
+
+```lua
+-- ~/.config/bread/modules/monitors.lua
+local M = bread.module({ name = "monitors", version = "1.0.0" })
+
+local function apply_internal_mode(has_external)
+    local mode = has_external and "1920x1080@60" or "1920x1200@60"
+    bread.hyprland.keyword("monitor", "eDP-1, " .. mode .. ", 0x0, 1")
+end
+
+local function apply_external()
+    bread.hyprland.keyword("monitor", "DP-3, 1920x1080@60, auto, 1, mirror, eDP-1")
+end
+
+local externals = 0
+local function update()
+    apply_internal_mode(externals > 0)
+    if externals > 0 then
+        apply_external()
+    end
+end
+
+function M.on_load()
+    bread.on("bread.monitor.connected", function(event)
+        local name = tostring((event.data and (event.data.name or event.data.raw)) or "")
+        if not name:match("eDP%-1") then
+            externals = externals + 1
+            update()
+        end
+    end)
+
+    bread.on("bread.monitor.disconnected", function(event)
+        local name = tostring((event.data and (event.data.name or event.data.raw)) or "")
+        if not name:match("eDP%-1") then
+            externals = math.max(0, externals - 1)
+            update()
+        end
+    end)
+
+    bread.once("bread.system.startup", function()
+        update()
+    end)
+end
+
+return M
+```
+
+## Tips for porting your own scripts
+
+- Start by logging the event payload: `bread.log(event.data.raw)`
+- Replace polling loops with event subscriptions
+- Use `bread.exec` for shell commands and systemd operations
+- Use `bread.state.watch` for data that already lives in the runtime state

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Breadway Contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,2 +1,635 @@
-# bread
+# Bread
 
+**A reactive automation fabric for Linux desktops.**
+
+Bread is a modular desktop automation runtime built around a single idea: your desktop should behave like a programmable system, not a collection of disconnected config files.
+
+Instead of scattering behavior across shell scripts, compositor configs, udev rules, and ad-hoc daemons, Bread centralizes runtime awareness into a coherent layer that can observe, interpret, and react to system state dynamically.
+
+> **Status:** Early development. The daemon (`breadd`) is stable. The Lua automation API is active and feature-complete for daily use.
+
+---
+
+## How it works
+
+Bread runs a long-lived daemon (`breadd`) that:
+
+1. Ingests raw signals from your compositor, hardware, and OS
+2. Normalizes them into stable, semantic events (`bread.device.dock.connected`, `bread.monitor.connected`, etc.)
+3. Maintains a live model of your desktop state
+4. Delivers those events to Lua modules that implement your automation
+
+Your automation lives in Lua. You subscribe to events, read state, and call APIs:
+
+```lua
+local M = bread.module({ name = "dock", version = "1.0.0" })
+
+bread.on("bread.device.dock.connected", function(event)
+    bread.profile.activate("desk")
+    bread.exec("waybar --config ~/.config/waybar/desk.jsonc")
+    bread.notify("Dock connected", { urgency = "low" })
+end)
+
+bread.on("bread.device.dock.disconnected", function(event)
+    bread.profile.activate("default")
+end)
+
+return M
+```
+
+---
+
+## Architecture
+
+```
+breadd/          Rust daemon — event pipeline, state engine, IPC, adapter supervision
+bread-cli/       CLI frontend — talks to breadd over a Unix socket
+bread-shared/    Shared types — RawEvent, BreadEvent, AdapterSource
+bread-sync/      Sync engine — snapshot and restore system state via a Git remote
+packaging/       Arch PKGBUILD and systemd user service
+```
+
+The daemon is structured in four layers:
+
+- **Adapters** — interface with Hyprland IPC, udev, power state, network interfaces, and Bluetooth (BlueZ)
+- **Normalizer** — transforms raw adapter signals into semantic Bread events
+- **State engine** — maintains runtime state and dispatches events to subscribers
+- **Lua runtime** — loads your modules, registers handlers, executes automation
+
+---
+
+## Requirements
+
+- Linux (Arch recommended)
+- Wayland compositor (Hyprland for full functionality)
+- Rust toolchain (stable, 2021 edition)
+- `udev` (standard on systemd systems)
+
+Optional but preferred:
+- UPower (for battery events via D-Bus rather than sysfs polling)
+- rtnetlink (for network events; falls back to sysfs polling without it)
+- BlueZ (for Bluetooth device events and control)
+
+---
+
+## Installation
+
+### From source
+
+```bash
+git clone https://github.com/Breadway/bread.git
+cd bread
+```
+
+Run the install script — it builds, symlinks `breadd` and `bread` into `~/.local/bin` (override with `BIN_DIR=…`), installs the systemd user service, and starts the daemon:
+
+```bash
+bash scripts/install.sh
+```
+
+Or step by step (system-wide install):
+
+```bash
+cargo build --release
+sudo install -Dm755 target/release/breadd /usr/bin/breadd
+sudo install -Dm755 target/release/bread /usr/bin/bread
+```
+
+### Arch Linux (PKGBUILD)
+
+```bash
+cd packaging/arch
+makepkg -si
+```
+
+### systemd user service
+
+```bash
+mkdir -p ~/.config/systemd/user
+cp packaging/systemd/breadd.service ~/.config/systemd/user/
+systemctl --user daemon-reload
+systemctl --user enable --now breadd
+```
+
+---
+
+## Configuration
+
+Bread reads from `~/.config/bread/breadd.toml`. All values are optional — the daemon runs with defaults if the file doesn't exist.
+
+```toml
+[daemon]
+log_level = "info"   # trace | debug | info | warn | error
+
+[lua]
+entry_point = "~/.config/bread/init.lua"
+module_path = "~/.config/bread/modules"
+
+[adapters.hyprland]
+enabled = true
+
+[adapters.udev]
+enabled = true
+subsystems = ["usb", "input", "drm", "power_supply"]
+
+[adapters.power]
+enabled = true
+poll_interval_secs = 30
+
+[adapters.network]
+enabled = true
+
+[adapters.bluetooth]
+enabled = true
+
+[events]
+dedup_window_ms = 100
+
+[notifications]
+default_timeout_ms = 5000
+default_urgency = "normal"
+notify_send_path = "notify-send"
+
+[modules]
+builtin = true    # load built-in modules (monitors, devices, workspaces, binds)
+disable = []      # list of built-in module names to disable
+```
+
+Your automation lives in `~/.config/bread/init.lua`. Modules placed in `~/.config/bread/modules/` are auto-loaded after `init.lua`:
+
+```lua
+-- ~/.config/bread/init.lua
+
+bread.on("bread.system.startup", function(event)
+    bread.profile.activate("default")
+end)
+```
+
+---
+
+## CLI reference
+
+All commands communicate with the running daemon over a Unix socket at `$XDG_RUNTIME_DIR/bread/breadd.sock`.
+
+```bash
+# Daemon
+bread ping                            # Check daemon connectivity
+bread health                          # Daemon version, uptime, PID
+bread doctor                          # Diagnose daemon and module health
+
+# Lua runtime
+bread reload                          # Hot-reload all Lua modules
+bread reload --watch                  # Watch config dir and reload on changes
+
+# State and events
+bread state                           # Dump full runtime state as JSON
+bread events                          # Stream live normalized events
+bread events bread.device.*           # Stream filtered events
+bread events --since 60               # Replay events from the last 60 seconds
+bread emit <event>                    # Manually fire an event (for testing)
+
+# Profiles
+bread profile-list                    # List defined profiles
+bread profile-activate <name>         # Activate a named profile
+
+# Modules
+bread modules list                    # List installed modules and daemon status
+bread modules install github:user/repo  # Install from GitHub
+bread modules install /local/path     # Install from a local directory
+bread modules remove <name>           # Remove an installed module
+bread modules update [name]           # Re-install one or all GitHub-sourced modules
+bread modules info <name>             # Show full manifest and daemon status
+
+# Sync
+bread sync init                       # Initialize sync for this machine (remote optional)
+bread sync push                       # Commit local snapshot
+bread sync push --message "note"      # Commit with a custom message
+bread sync pull                       # Apply local snapshot to this machine
+bread sync pull --install-packages    # Also install packages from snapshot
+bread sync status                     # Show what has changed since last push
+bread sync diff                       # Show file-level diff vs last commit
+bread sync machines                   # List known machines from sync repo
+bread sync export                     # Create a portable .tar.gz snapshot (no git auth)
+bread sync export --output path       # Export to a specific file or directory
+bread sync import <path>              # Apply a portable snapshot (.tar.gz or directory)
+bread sync import <path> --install-packages  # Also install packages
+bread sync import <path> --no-clone-repos    # Skip cloning git repos
+```
+
+---
+
+## Module system
+
+Modules are Lua files (or directories) installed to `~/.config/bread/modules/`. Each module must declare itself with `bread.module()` and have a `bread.module.toml` manifest.
+
+### Installing modules
+
+```bash
+# From GitHub (downloads latest release tarball)
+bread modules install github:someuser/bread-wifi
+
+# From a local path
+bread modules install ~/src/my-module
+
+# From a specific ref
+bread modules install github:someuser/bread-wifi@v1.2.0
+```
+
+### Writing a module
+
+A module directory looks like:
+
+```
+~/.config/bread/modules/
+└── wifi/
+    ├── bread.module.toml    ← required manifest
+    └── init.lua             ← entry point
+```
+
+`bread.module.toml`:
+```toml
+name = "wifi"
+version = "1.0.0"
+description = "WiFi management for Bread"
+author = "someuser"
+source = "github:someuser/bread-wifi"
+installed_at = "2026-01-01T00:00:00Z"
+```
+
+`init.lua`:
+```lua
+local M = bread.module({ name = "wifi", version = "1.0.0" })
+
+bread.on("bread.network.connected", function(event)
+    bread.log("Network up: " .. (event.data.interface or "unknown"))
+end)
+
+return M
+```
+
+---
+
+## Sync system
+
+Bread sync snapshots your entire setup — Bread config, dotfiles, fonts, systemd units, package lists, and git repos — into a local Git repository. Use `export`/`import` to move state between machines without needing a git remote.
+
+```bash
+# First-time setup (remote is optional)
+bread sync init
+bread sync init --remote git@github.com:you/bread-config.git
+
+# Commit a local snapshot
+bread sync push
+
+# Create a portable .tar.gz (no git auth required)
+bread sync export
+
+# On another machine: apply the snapshot
+bread sync import bread-export-hermes-2026-05-16.tar.gz
+
+# Also install packages on import
+bread sync import bread-export.tar.gz --install-packages
+```
+
+Configure what gets synced in `~/.config/bread/sync.toml`:
+
+```toml
+[remote]
+url = "git@github.com:you/bread-config.git"   # optional
+branch = "main"
+
+[machine]
+name = "hermes"
+tags = ["laptop", "battery"]
+
+[packages]
+enabled = true
+managers = ["pacman", "pip", "cargo"]
+
+[delegates]
+include = ["~/.config/nvim", "~/.config/waybar"]
+exclude = ["**/.git", "**/*.cache"]
+```
+
+A portable export snapshot contains:
+
+```
+bread-export-hermes-2026-05-16/
+├── bread/          ← ~/.config/bread/
+├── configs/        ← hypr, nvim, kitty, waybar, fish, dunst, btop, …
+├── dotfiles/       ← .gitconfig, .zshrc, .zprofile, .zshenv, ssh config, …
+├── local-bin/      ← ~/.local/bin/ scripts
+├── local-fonts/    ← ~/.local/share/fonts/
+├── systemd/        ← ~/.config/systemd/user/ units
+├── system/         ← udev rules, modprobe, sysctl (sudo required for some)
+├── packages/       ← pacman.txt, pip.txt, cargo.txt, npm.txt
+├── machines/       ← per-machine profiles
+├── manifest.toml   ← path map for exact restore
+└── restore.sh      ← shell script for manual restore
+```
+
+---
+
+## Event reference
+
+Events follow the namespace convention `bread.<subsystem>.<noun>.<verb>`.
+
+| Event | Trigger |
+|-------|---------|
+| `bread.system.startup` | Daemon fully initialized |
+| `bread.device.connected` | Any device attached |
+| `bread.device.disconnected` | Any device removed |
+| `bread.device.<device>.connected` | Named device attached (name from `devices.lua`) |
+| `bread.device.<device>.disconnected` | Named device removed |
+| `bread.monitor.connected` | Display connected |
+| `bread.monitor.disconnected` | Display disconnected |
+| `bread.workspace.changed` | Active workspace changed |
+| `bread.window.focus.changed` | Focused window changed |
+| `bread.window.opened` | Window opened |
+| `bread.window.closed` | Window closed |
+| `bread.power.ac.connected` | AC adapter plugged in |
+| `bread.power.ac.disconnected` | AC adapter unplugged |
+| `bread.power.battery.low` | Battery ≤ 20% |
+| `bread.power.battery.very_low` | Battery ≤ 10% |
+| `bread.power.battery.critical` | Battery ≤ 5% |
+| `bread.power.battery.full` | Battery at 100% |
+| `bread.network.connected` | Network interface came online |
+| `bread.network.disconnected` | Network interface went offline |
+| `bread.bluetooth.device.paired` | Bluetooth device paired / discovered |
+| `bread.bluetooth.device.unpaired` | Bluetooth device removed from BlueZ |
+| `bread.profile.activated` | Profile switched |
+| `bread.notify.sent` | Desktop notification dispatched |
+
+---
+
+## Lua API
+
+### Modules
+
+Every module file must declare itself. The declaration is used for dependency ordering and status tracking.
+
+```lua
+local M = bread.module({
+    name    = "my-module",
+    version = "1.0.0",
+    after   = { "bread.devices" },   -- load after this module
+})
+
+-- ... module body ...
+
+return M
+```
+
+### Events
+
+```lua
+-- Subscribe to events; returns a subscription ID
+local id = bread.on("bread.monitor.connected", function(event)
+    -- event.event   → "bread.monitor.connected"
+    -- event.data    → table of event-specific fields
+    -- event.source  → adapter that produced it
+    bread.log(event.event)
+end)
+
+-- Unsubscribe by ID
+bread.off(id)
+
+-- Subscribe once, auto-unsubscribe after first delivery
+bread.once("bread.system.startup", function(event)
+    bread.profile.activate("default")
+end)
+
+-- Subscribe with a filter predicate. The predicate goes in an opts table.
+bread.filter("bread.device.connected", function(event)
+    bread.exec("xset r rate 200 40")
+end, {
+    filter = function(event)
+        return event.data.device == "keyboard"
+    end,
+})
+
+-- Emit a custom event (for cross-module communication)
+bread.emit("mymodule.something", { key = "value" })
+```
+
+Pattern matching supports `*` (single segment), `**` (any depth), and `?` (single character):
+```lua
+bread.on("bread.device.*", handler)   -- matches bread.device.dock.connected
+bread.on("bread.device.**", handler)  -- matches any depth under bread.device
+```
+
+### State
+
+```lua
+-- Read from runtime state by dot-separated path
+local monitors = bread.state.get("monitors")
+local online   = bread.state.get("network.online")
+
+-- Typed shorthands
+local monitors  = bread.state.monitors()
+local workspace = bread.state.active_workspace()
+local window    = bread.state.active_window()
+local devices   = bread.state.devices()
+local power     = bread.state.power()
+local network   = bread.state.network()
+local profile   = bread.state.profile()
+
+-- Watch a state path for changes
+bread.state.watch("power.ac_connected", function(new_val, old_val)
+    if new_val then
+        bread.notify("AC connected")
+    end
+end)
+```
+
+### Profiles
+
+```lua
+bread.profile.activate("desk")
+bread.profile.activate("default")
+```
+
+### Execution and notifications
+
+```lua
+-- Fire-and-forget shell command
+bread.exec("kitty")
+
+-- Desktop notification (uses notify-send)
+bread.notify("Title", { urgency = "normal", timeout = 3000, icon = "dialog-info" })
+bread.notify("Simple message")   -- title defaults to "bread"
+```
+
+### Timers
+
+```lua
+-- Run once after a delay (ms)
+local id = bread.after(500, function()
+    bread.exec("some-delayed-command")
+end)
+
+-- Run on a repeating interval (ms)
+local id = bread.every(60000, function()
+    bread.log("tick")
+end)
+
+-- Cancel either kind
+bread.cancel(id)
+
+-- Debounce a rapidly-firing handler
+local fn = bread.debounce(200, function(event)
+    reconfigure_monitors()
+end)
+bread.on("bread.monitor.*", fn)
+```
+
+### Wait (inside coroutines)
+
+```lua
+-- Yield until a matching event arrives
+local event = bread.wait("bread.device.dock.connected", { timeout = 5000 })
+if event then
+    -- dock arrived within 5 seconds
+end
+```
+
+### Machine and filesystem
+
+```lua
+-- Machine identity (from sync.toml, falls back to hostname)
+local name = bread.machine.name()
+local tags = bread.machine.tags()       -- array of strings
+local ok   = bread.machine.has_tag("laptop")
+
+-- Filesystem helpers (~ is expanded)
+bread.fs.write("~/.config/some/file", "content")
+local content = bread.fs.read("~/.config/some/file")   -- nil if not found
+local exists  = bread.fs.exists("~/some/path")
+local abs     = bread.fs.expand("~/some/path")
+```
+
+### Logging
+
+```lua
+bread.log("Module loaded")     -- info level
+bread.warn("Unexpected state") -- warn level
+bread.error("Something failed") -- error level
+```
+
+### Hyprland bindings
+
+```lua
+-- Dispatch a Hyprland command
+bread.hyprland.dispatch("workspace", "2")
+bread.hyprland.dispatch("exec", "kitty")
+
+-- Set a keyword
+bread.hyprland.keyword("monitor", "HDMI-A-1, 2560x1440, 0x0, 1")
+
+-- Query compositor state
+local win        = bread.hyprland.active_window()
+local monitors   = bread.hyprland.monitors()
+local workspaces = bread.hyprland.workspaces()
+local clients    = bread.hyprland.clients()
+
+-- Subscribe to raw Hyprland events (bypass normalization)
+bread.hyprland.on_raw("activewindow", function(raw)
+    -- raw is the unparsed string from Hyprland's event socket
+end)
+```
+
+### Bluetooth
+
+The `bread.bluetooth` namespace provides BlueZ control. All operations degrade gracefully when Bluetooth hardware is unavailable.
+
+```lua
+-- Power the adapter on or off
+bread.bluetooth.power(true)
+bread.bluetooth.power(false)
+
+-- Query current power state (returns true/false, or nil if unavailable)
+local on = bread.bluetooth.powered()
+
+-- Connect/disconnect a paired device by MAC address
+-- Fire-and-forget; result arrives as bread.device.connected/disconnected
+bread.bluetooth.connect("AA:BB:CC:DD:EE:FF")
+bread.bluetooth.disconnect("AA:BB:CC:DD:EE:FF")
+
+-- Start or stop device discovery
+bread.bluetooth.scan(true)
+bread.bluetooth.scan(false)
+
+-- List all devices known to BlueZ
+local devs = bread.bluetooth.devices()
+-- Returns nil if BlueZ is unavailable, otherwise:
+-- { { address, name, connected, paired }, ... }
+```
+
+Example — auto-connect headphones when Bluetooth powers on:
+
+```lua
+bread.state.watch("power.ac_connected", function(ac)
+    if ac then
+        bread.bluetooth.power(true)
+        bread.bluetooth.connect("AA:BB:CC:DD:EE:FF")
+    end
+end)
+```
+
+### Module-scoped storage
+
+Survives hot reload; does not survive daemon restart.
+
+```lua
+M.store.set("last_profile", "docked")
+local p = M.store.get("last_profile")  -- "docked"
+```
+
+---
+
+## IPC protocol
+
+The daemon exposes a Unix socket at `$XDG_RUNTIME_DIR/bread/breadd.sock`. The protocol is newline-delimited JSON — useful for scripting or building tooling outside the CLI.
+
+Request:
+```json
+{ "id": "1", "method": "state.get", "params": { "key": "monitors" } }
+```
+
+Response:
+```json
+{ "id": "1", "result": [ { "name": "HDMI-A-1", "connected": true } ] }
+```
+
+Available methods:
+
+| Method | Description |
+|--------|-------------|
+| `ping` | Connectivity check |
+| `health` | Version, uptime, PID, adapter status |
+| `state.get` | Read a value from `RuntimeState` by dotted key path |
+| `state.dump` | Return the full `RuntimeState` as JSON |
+| `modules.list` | List all loaded modules and their status |
+| `modules.reload` | Hot-reload the Lua runtime |
+| `profile.list` | List defined profiles |
+| `profile.activate` | Switch active profile |
+| `events.subscribe` | Upgrade connection to streaming mode |
+| `events.replay` | Replay buffered events from the last N ms |
+| `emit` | Inject a synthetic event into the pipeline |
+| `sync.status` | Return sync initialization state and machine info |
+
+`events.subscribe` upgrades the connection to streaming mode — the daemon pushes events line by line until the client disconnects.
+
+---
+
+## Contributing
+
+Bread is early-stage software. Contributions, issues, and feedback are welcome.
+
+The daemon (`breadd`) is the most stable part of the codebase. Active development is happening across the Lua API, module system, and sync subsystem.
+
+---
+
+## License
+
+MIT — see [LICENSE](LICENSE).

bread-cli/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "bread-cli"
+version = "1.0.0"
+edition = "2021"
+
+[[bin]]
+name = "bread"
+path = "src/main.rs"
+
+[lib]
+name = "bread_cli"
+path = "src/lib.rs"
+
+[dependencies]
+bread-shared = { path = "../bread-shared" }
+bread-sync = { path = "../bread-sync" }
+serde.workspace = true
+serde_json.workspace = true
+tokio.workspace = true
+anyhow.workspace = true
+chrono.workspace = true
+dirs.workspace = true
+clap = { version = "4.5", features = ["derive"] }
+notify = "6.1"
+libc = "0.2"
+toml = "0.8"
+reqwest = { version = "0.11", features = ["json"] }
+flate2 = "1.0"
+tar = "0.4"
+tempfile.workspace = true

bread-cli/src/lib.rs

@@ -0,0 +1,2 @@
+/// Module management (install, remove, list, update, info).
+pub mod modules_mgmt;

bread-cli/src/modules_mgmt.rs

@@ -0,0 +1,181 @@
+use anyhow::{bail, Context, Result};
+use chrono::Utc;
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::{Path, PathBuf};
+
+/// Contents of `bread.module.toml`.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ModuleManifest {
+    pub name: String,
+    pub version: String,
+    pub description: String,
+    pub author: String,
+    pub source: String,
+    pub installed_at: String,
+}
+
+/// Parsed install source.
+pub enum InstallSource {
+    GitHub {
+        user: String,
+        repo: String,
+        git_ref: Option<String>,
+    },
+    LocalPath(PathBuf),
+}
+
+/// Parse a source string into an `InstallSource`.
+pub fn parse_source(source: &str) -> Result<InstallSource> {
+    if let Some(rest) = source.strip_prefix("github:") {
+        let (repo_part, ref_part) = rest
+            .split_once('@')
+            .map(|(r, v)| (r, Some(v.to_string())))
+            .unwrap_or((rest, None));
+        let (user, repo) = repo_part.split_once('/').ok_or_else(|| {
+            anyhow::anyhow!(
+                "bread: invalid github source '{}'. Expected 'github:user/repo[@ref]'",
+                source
+            )
+        })?;
+        Ok(InstallSource::GitHub {
+            user: user.to_string(),
+            repo: repo.to_string(),
+            git_ref: ref_part,
+        })
+    } else if source.starts_with('/')
+        || source.starts_with("./")
+        || source.starts_with("../")
+        || source.starts_with('~')
+    {
+        let expanded = bread_sync::config::expand_path(source);
+        Ok(InstallSource::LocalPath(expanded))
+    } else {
+        bail!(
+            "bread: invalid module source '{}'. Use 'github:user/repo' or an absolute/relative path",
+            source
+        )
+    }
+}
+
+/// Install a module from a local directory into `modules_dir`.
+/// `source_str` is the original source string recorded in the manifest.
+pub fn install_from_local(
+    src: &Path,
+    source_str: &str,
+    modules_dir: &Path,
+) -> Result<ModuleManifest> {
+    let manifest_path = src.join("bread.module.toml");
+    if !manifest_path.exists() {
+        bail!("bread: no bread.module.toml found in {}", src.display());
+    }
+
+    let raw = fs::read_to_string(&manifest_path)
+        .with_context(|| format!("failed to read {}", manifest_path.display()))?;
+    let mut manifest: ModuleManifest =
+        toml::from_str(&raw).context("failed to parse bread.module.toml")?;
+
+    manifest.source = source_str.to_string();
+    manifest.installed_at = Utc::now().to_rfc3339();
+
+    let dest = modules_dir.join(&manifest.name);
+    if dest.exists() {
+        fs::remove_dir_all(&dest)
+            .with_context(|| format!("failed to remove existing module at {}", dest.display()))?;
+    }
+    copy_dir(src, &dest)?;
+
+    // Rewrite the manifest with the updated fields.
+    let manifest_dest = dest.join("bread.module.toml");
+    let out = toml::to_string_pretty(&manifest).context("failed to serialize module manifest")?;
+    fs::write(&manifest_dest, out)
+        .with_context(|| format!("failed to write manifest to {}", manifest_dest.display()))?;
+
+    Ok(manifest)
+}
+
+/// Remove a module directory from `modules_dir`.
+pub fn remove_module(name: &str, modules_dir: &Path) -> Result<()> {
+    let module_dir = modules_dir.join(name);
+    if !module_dir.exists() {
+        bail!("bread: module '{}' is not installed", name);
+    }
+    fs::remove_dir_all(&module_dir)
+        .with_context(|| format!("failed to remove {}", module_dir.display()))
+}
+
+/// List all installed modules in `modules_dir`.
+pub fn list_modules(modules_dir: &Path) -> Result<Vec<ModuleManifest>> {
+    if !modules_dir.exists() {
+        return Ok(vec![]);
+    }
+    let mut out = Vec::new();
+    for entry in fs::read_dir(modules_dir)? {
+        let entry = entry?;
+        let path = entry.path();
+        if path.is_dir() {
+            let manifest_path = path.join("bread.module.toml");
+            if manifest_path.exists() {
+                if let Ok(m) = read_manifest_file(&manifest_path) {
+                    out.push(m);
+                }
+            }
+        }
+    }
+    out.sort_by(|a, b| a.name.cmp(&b.name));
+    Ok(out)
+}
+
+/// Read a module manifest by name.
+pub fn read_module_manifest(name: &str, modules_dir: &Path) -> Result<ModuleManifest> {
+    let manifest_path = modules_dir.join(name).join("bread.module.toml");
+    if !manifest_path.exists() {
+        bail!("bread: module '{}' is not installed", name);
+    }
+    read_manifest_file(&manifest_path)
+}
+
+/// Read and parse a `bread.module.toml` file.
+pub fn read_manifest_file(path: &Path) -> Result<ModuleManifest> {
+    let raw =
+        fs::read_to_string(path).with_context(|| format!("failed to read {}", path.display()))?;
+    toml::from_str(&raw).context("failed to parse module manifest")
+}
+
+/// Returns the default modules directory.
+pub fn modules_dir() -> PathBuf {
+    if let Some(cfg) = dirs::config_dir() {
+        return cfg.join("bread").join("modules");
+    }
+    if let Ok(xdg) = std::env::var("XDG_CONFIG_HOME") {
+        return PathBuf::from(xdg).join("bread").join("modules");
+    }
+    if let Ok(home) = std::env::var("HOME") {
+        return PathBuf::from(home)
+            .join(".config")
+            .join("bread")
+            .join("modules");
+    }
+    PathBuf::from(".config/bread/modules")
+}
+
+fn copy_dir(src: &Path, dst: &Path) -> Result<()> {
+    fs::create_dir_all(dst)?;
+    for entry in fs::read_dir(src)? {
+        let entry = entry?;
+        let src_path = entry.path();
+        let dst_path = dst.join(entry.file_name());
+        if src_path.is_dir() {
+            copy_dir(&src_path, &dst_path)?;
+        } else {
+            fs::copy(&src_path, &dst_path).with_context(|| {
+                format!(
+                    "failed to copy {} to {}",
+                    src_path.display(),
+                    dst_path.display()
+                )
+            })?;
+        }
+    }
+    Ok(())
+}

bread-cli/tests/modules.rs

@@ -0,0 +1,139 @@
+use bread_cli::modules_mgmt;
+use std::fs;
+use tempfile::TempDir;
+
+/// Helper: create a minimal valid module directory in `dir` with given name.
+fn make_module_dir(dir: &std::path::Path, name: &str, version: &str) -> std::path::PathBuf {
+    let module_dir = dir.join(name);
+    fs::create_dir_all(&module_dir).unwrap();
+    let manifest = format!(
+        r#"name = "{name}"
+version = "{version}"
+description = "Test module"
+author = "test"
+source = "/tmp/test"
+installed_at = ""
+"#
+    );
+    fs::write(module_dir.join("bread.module.toml"), manifest).unwrap();
+    fs::write(module_dir.join("init.lua"), "-- test\n").unwrap();
+    module_dir
+}
+
+#[test]
+fn install_from_local_succeeds_with_manifest() {
+    let src_tmp = TempDir::new().unwrap();
+    let modules_tmp = TempDir::new().unwrap();
+
+    make_module_dir(src_tmp.path(), "mymod", "1.2.3");
+    let src = src_tmp.path().join("mymod");
+
+    let result = modules_mgmt::install_from_local(&src, "test:mymod", modules_tmp.path());
+
+    assert!(result.is_ok(), "install failed: {:?}", result.err());
+    let manifest = result.unwrap();
+    assert_eq!(manifest.name, "mymod");
+    assert_eq!(manifest.version, "1.2.3");
+
+    // Module directory must exist in modules dir
+    assert!(modules_tmp.path().join("mymod").exists());
+    assert!(modules_tmp
+        .path()
+        .join("mymod")
+        .join("bread.module.toml")
+        .exists());
+    assert!(modules_tmp.path().join("mymod").join("init.lua").exists());
+}
+
+#[test]
+fn install_from_local_fails_without_manifest() {
+    let src_tmp = TempDir::new().unwrap();
+    let modules_tmp = TempDir::new().unwrap();
+
+    // No bread.module.toml in src
+    let src = src_tmp.path();
+    fs::write(src.join("init.lua"), "-- no manifest\n").unwrap();
+
+    let result = modules_mgmt::install_from_local(src, "test:nomod", modules_tmp.path());
+    assert!(result.is_err());
+    let msg = result.unwrap_err().to_string();
+    assert!(
+        msg.contains("bread.module.toml"),
+        "expected error about bread.module.toml, got: {msg}"
+    );
+}
+
+#[test]
+fn remove_deletes_module_directory() {
+    let modules_tmp = TempDir::new().unwrap();
+    make_module_dir(modules_tmp.path(), "delme", "0.1.0");
+
+    // Verify it exists before removal
+    assert!(modules_tmp.path().join("delme").exists());
+
+    let result = modules_mgmt::remove_module("delme", modules_tmp.path());
+    assert!(result.is_ok(), "remove failed: {:?}", result.err());
+    assert!(!modules_tmp.path().join("delme").exists());
+}
+
+#[test]
+fn remove_nonexistent_errors() {
+    let modules_tmp = TempDir::new().unwrap();
+    let result = modules_mgmt::remove_module("ghost", modules_tmp.path());
+    assert!(result.is_err());
+    let msg = result.unwrap_err().to_string();
+    assert!(
+        msg.contains("ghost"),
+        "expected error mentioning module name, got: {msg}"
+    );
+}
+
+#[test]
+fn list_reads_manifests_from_disk() {
+    let modules_tmp = TempDir::new().unwrap();
+    make_module_dir(modules_tmp.path(), "alpha", "1.0.0");
+    make_module_dir(modules_tmp.path(), "beta", "2.0.0");
+
+    // Add a non-module dir (no manifest) — should be ignored
+    fs::create_dir_all(modules_tmp.path().join("notamodule")).unwrap();
+
+    let modules = modules_mgmt::list_modules(modules_tmp.path()).unwrap();
+    assert_eq!(modules.len(), 2);
+    assert_eq!(modules[0].name, "alpha");
+    assert_eq!(modules[1].name, "beta");
+}
+
+#[test]
+fn manifest_written_correctly_on_install() {
+    let src_tmp = TempDir::new().unwrap();
+    let modules_tmp = TempDir::new().unwrap();
+
+    make_module_dir(src_tmp.path(), "installtest", "3.0.0");
+    let src = src_tmp.path().join("installtest");
+
+    let manifest =
+        modules_mgmt::install_from_local(&src, "github:test/installtest", modules_tmp.path())
+            .unwrap();
+
+    // All required fields must be present and non-empty
+    assert_eq!(manifest.name, "installtest");
+    assert_eq!(manifest.version, "3.0.0");
+    assert!(!manifest.description.is_empty());
+    assert!(!manifest.author.is_empty());
+    assert_eq!(manifest.source, "github:test/installtest");
+    assert!(!manifest.installed_at.is_empty());
+
+    // installed_at must be valid RFC 3339
+    let parsed = chrono::DateTime::parse_from_rfc3339(&manifest.installed_at);
+    assert!(
+        parsed.is_ok(),
+        "installed_at '{}' is not valid RFC 3339",
+        manifest.installed_at
+    );
+
+    // Verify the on-disk manifest also has all fields
+    let on_disk = modules_mgmt::read_module_manifest("installtest", modules_tmp.path()).unwrap();
+    assert_eq!(on_disk.name, manifest.name);
+    assert_eq!(on_disk.installed_at, manifest.installed_at);
+    assert_eq!(on_disk.source, "github:test/installtest");
+}

bread-shared/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "bread-shared"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+serde.workspace = true
+serde_json.workspace = true

bread-shared/src/lib.rs

@@ -0,0 +1,219 @@
+//! Shared types for the Bread automation fabric.
+//!
+//! This crate defines the canonical event types ([`RawEvent`], [`BreadEvent`])
+//! and the [`AdapterSource`] enum that both the daemon (`breadd`) and CLI
+//! (`bread-cli`) depend on. Keeping these types in a separate crate guarantees
+//! that adapters, the state engine, IPC clients, and the Lua bindings all
+//! agree on a single wire format.
+
+use serde::{Deserialize, Serialize};
+
+/// Identifies which adapter produced an event.
+///
+/// The state engine uses this to choose a normalization strategy and the
+/// IPC layer surfaces it so subscribers can filter by origin.
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, Eq, PartialEq, Hash)]
+#[serde(rename_all = "snake_case")]
+pub enum AdapterSource {
+    /// The Hyprland compositor IPC socket.
+    Hyprland,
+    /// The Linux udev / netlink subsystem.
+    Udev,
+    /// Power management (sysfs / UPower).
+    Power,
+    /// Network state (rtnetlink / NetworkManager).
+    Network,
+    /// Internal events synthesized by the daemon itself
+    /// (e.g. `bread.profile.activated`, `bread.state.changed.*`).
+    System,
+    /// BlueZ Bluetooth stack via D-Bus.
+    Bluetooth,
+}
+
+/// An unnormalized event as emitted by an adapter.
+///
+/// Raw events carry the adapter's native payload verbatim. The
+/// [`EventNormalizer`](../breadd/core/normalizer/struct.EventNormalizer.html)
+/// in `breadd` transforms `RawEvent` into one or more [`BreadEvent`]s with
+/// a semantic name and structured data.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RawEvent {
+    /// Which adapter produced this event.
+    pub source: AdapterSource,
+    /// Adapter-specific event kind (e.g. `"workspace"`, `"add"`, `"battery"`).
+    pub kind: String,
+    /// Adapter-specific JSON payload — not stable across versions.
+    pub payload: serde_json::Value,
+    /// Unix epoch milliseconds when the event was observed.
+    pub timestamp: u64,
+}
+
+/// A normalized event ready for dispatch to Lua subscribers and IPC consumers.
+///
+/// `BreadEvent` is the public, stable contract: event names use a dotted
+/// namespace (e.g. `bread.device.dock.connected`) and the `data` payload
+/// follows a documented shape per event family. See `Documentation.md` for
+/// the full event catalogue.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct BreadEvent {
+    /// Dotted event name, e.g. `bread.workspace.changed`.
+    pub event: String,
+    /// Unix epoch milliseconds when the originating signal was observed.
+    pub timestamp: u64,
+    /// The adapter that produced the underlying raw event.
+    pub source: AdapterSource,
+    /// Structured event data. The shape depends on the event family.
+    pub data: serde_json::Value,
+}
+
+impl BreadEvent {
+    /// Construct a new event with `timestamp` set to the current wall-clock.
+    pub fn new(event: impl Into<String>, source: AdapterSource, data: serde_json::Value) -> Self {
+        Self {
+            event: event.into(),
+            timestamp: now_unix_ms(),
+            source,
+            data,
+        }
+    }
+}
+
+/// Current Unix epoch in milliseconds.
+///
+/// Falls back to `0` if the system clock is before the epoch, which keeps
+/// callers infallible. Used for `BreadEvent::timestamp` and replay cutoffs.
+pub fn now_unix_ms() -> u64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_millis() as u64
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+
+    #[test]
+    fn adapter_source_serializes_as_snake_case() {
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::Hyprland).unwrap(),
+            "\"hyprland\""
+        );
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::Udev).unwrap(),
+            "\"udev\""
+        );
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::Power).unwrap(),
+            "\"power\""
+        );
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::Network).unwrap(),
+            "\"network\""
+        );
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::System).unwrap(),
+            "\"system\""
+        );
+        assert_eq!(
+            serde_json::to_string(&AdapterSource::Bluetooth).unwrap(),
+            "\"bluetooth\""
+        );
+    }
+
+    #[test]
+    fn adapter_source_round_trips_through_json() {
+        for source in [
+            AdapterSource::Hyprland,
+            AdapterSource::Udev,
+            AdapterSource::Power,
+            AdapterSource::Network,
+            AdapterSource::System,
+            AdapterSource::Bluetooth,
+        ] {
+            let s = serde_json::to_string(&source).unwrap();
+            let back: AdapterSource = serde_json::from_str(&s).unwrap();
+            assert_eq!(source, back);
+        }
+    }
+
+    #[test]
+    fn adapter_source_rejects_unknown_variant() {
+        let result: Result<AdapterSource, _> = serde_json::from_str("\"floppy\"");
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn bread_event_new_sets_current_timestamp() {
+        let before = now_unix_ms();
+        let event = BreadEvent::new("bread.test", AdapterSource::System, json!({}));
+        let after = now_unix_ms();
+
+        assert!(event.timestamp >= before);
+        assert!(event.timestamp <= after);
+        assert_eq!(event.event, "bread.test");
+        assert_eq!(event.source, AdapterSource::System);
+    }
+
+    #[test]
+    fn bread_event_new_accepts_owned_and_borrowed_names() {
+        let owned = BreadEvent::new(String::from("bread.a"), AdapterSource::System, json!(null));
+        let borrowed = BreadEvent::new("bread.b", AdapterSource::System, json!(null));
+        assert_eq!(owned.event, "bread.a");
+        assert_eq!(borrowed.event, "bread.b");
+    }
+
+    #[test]
+    fn bread_event_round_trips_through_json() {
+        let original = BreadEvent {
+            event: "bread.device.connected".to_string(),
+            timestamp: 1_700_000_000_000,
+            source: AdapterSource::Udev,
+            data: json!({ "id": "usb-1-1.4", "name": "Logitech" }),
+        };
+        let raw = serde_json::to_string(&original).unwrap();
+        let decoded: BreadEvent = serde_json::from_str(&raw).unwrap();
+
+        assert_eq!(decoded.event, original.event);
+        assert_eq!(decoded.timestamp, original.timestamp);
+        assert_eq!(decoded.source, original.source);
+        assert_eq!(decoded.data, original.data);
+    }
+
+    #[test]
+    fn raw_event_round_trips_through_json() {
+        let original = RawEvent {
+            source: AdapterSource::Hyprland,
+            kind: "workspace".to_string(),
+            payload: json!({ "data": "2" }),
+            timestamp: 42,
+        };
+        let raw = serde_json::to_string(&original).unwrap();
+        let decoded: RawEvent = serde_json::from_str(&raw).unwrap();
+
+        assert_eq!(decoded.kind, original.kind);
+        assert_eq!(decoded.timestamp, original.timestamp);
+        assert_eq!(decoded.source, original.source);
+        assert_eq!(decoded.payload, original.payload);
+    }
+
+    #[test]
+    fn now_unix_ms_is_monotonically_non_decreasing_across_calls() {
+        let a = now_unix_ms();
+        let b = now_unix_ms();
+        assert!(b >= a, "now_unix_ms went backwards: {a} -> {b}");
+    }
+
+    #[test]
+    fn adapter_source_is_hashable_and_eq() {
+        use std::collections::HashSet;
+        let mut set = HashSet::new();
+        set.insert(AdapterSource::Hyprland);
+        set.insert(AdapterSource::Hyprland);
+        set.insert(AdapterSource::Udev);
+        set.insert(AdapterSource::Bluetooth);
+        assert_eq!(set.len(), 3);
+        assert!(set.contains(&AdapterSource::Hyprland));
+    }
+}

bread-sync/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "bread-sync"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+serde.workspace = true
+serde_json.workspace = true
+anyhow.workspace = true
+git2.workspace = true
+dirs.workspace = true
+chrono.workspace = true
+glob.workspace = true
+toml = "0.8"
+libc = "0.2"
+
+[dev-dependencies]
+tempfile.workspace = true

bread-sync/README.md

@@ -0,0 +1,88 @@
+# bread-sync
+
+Sync engine for [Bread](../README.md) — snapshot and restore desktop state via a Git remote.
+
+## Purpose
+
+`bread-sync` provides the library backing `bread sync` commands. It handles:
+
+- **Git operations** — clone, commit, push, pull, fetch, diff via `git2`
+- **Config serialization** — read/write `sync.toml` (machine name, remote URL, delegates, packages)
+- **Delegate file sync** — rsync-style directory copy with glob excludes
+- **Package snapshots** — capture installed packages from pacman, pip, npm, cargo
+- **Machine profiles** — per-machine TOML records with hostname, tags, and last-sync timestamp
+
+## Public API
+
+### `config`
+
+```rust
+SyncConfig::load(config_dir: &Path) -> Result<SyncConfig>
+SyncConfig::save(&self, config_dir: &Path) -> Result<()>
+SyncConfig::local_repo_path() -> PathBuf   // ~/.local/share/bread/sync-repo/
+bread_config_dir() -> PathBuf              // ~/.config/bread/
+expand_path(path: &str) -> PathBuf         // expands ~/
+```
+
+### `git`
+
+```rust
+SyncRepo::init(path: &Path) -> Result<SyncRepo>
+SyncRepo::open(path: &Path) -> Result<SyncRepo>
+SyncRepo::clone_from(url: &str, path: &Path) -> Result<SyncRepo>
+SyncRepo::open_or_clone(url: &str, path: &Path) -> Result<SyncRepo>
+SyncRepo::commit(&self, message: &str) -> Result<Option<git2::Oid>>  // None = nothing to commit
+SyncRepo::push(&self, remote: &str, branch: &str) -> Result<()>
+SyncRepo::pull(&self, remote: &str, branch: &str) -> Result<()>      // fast-forward only
+SyncRepo::fetch(&self, remote: &str, branch: &str) -> Result<()>
+SyncRepo::is_clean(&self) -> Result<bool>
+SyncRepo::local_changes(&self) -> Result<Vec<(char, String)>>
+SyncRepo::remote_changes(&self, remote: &str, branch: &str) -> Result<Vec<(char, String)>>
+SyncRepo::working_diff(&self) -> Result<String>
+SyncRepo::remote_diff(&self, remote: &str, branch: &str) -> Result<String>
+SyncRepo::set_remote(&self, name: &str, url: &str) -> Result<()>
+SyncRepo::last_commit_time(&self) -> Option<DateTime<Local>>
+```
+
+### `delegates`
+
+```rust
+sync_dir(src: &Path, dst: &Path, exclude: &[String]) -> Result<()>
+resolve_include_paths(includes: &[String]) -> Vec<(String, PathBuf)>
+```
+
+### `machine`
+
+```rust
+MachineProfile::new(name: String, tags: Vec<String>) -> MachineProfile
+MachineProfile::write(&self, machines_dir: &Path) -> Result<()>
+MachineProfile::read(machines_dir: &Path, name: &str) -> Result<MachineProfile>
+MachineProfile::list(machines_dir: &Path) -> Result<Vec<MachineProfile>>
+hostname() -> String
+```
+
+### `packages`
+
+```rust
+snapshot(manager: &str, dest: &Path) -> Result<bool>  // false = manager not found (non-fatal)
+parse_pacman(content: &str) -> Vec<String>
+parse_pip(content: &str) -> Vec<String>
+parse_npm(content: &str) -> Vec<String>
+parse_cargo(content: &str) -> Vec<String>
+```
+
+## Sync repo layout
+
+```
+~/.local/share/bread/sync-repo/
+├── bread/          ← snapshot of ~/.config/bread/
+├── configs/
+│   └── <basename>/ ← delegate paths
+├── machines/
+│   └── <name>.toml ← per-machine profiles
+└── packages/
+    ├── pacman.txt
+    ├── pip.txt
+    ├── npm.txt
+    └── cargo.txt
+```

bread-sync/src/config.rs

@@ -0,0 +1,259 @@
+use anyhow::{Context, Result};
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::{Path, PathBuf};
+
+/// Configuration stored in `~/.config/bread/sync.toml`.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SyncConfig {
+    pub remote: RemoteConfig,
+    pub machine: MachineConfig,
+    #[serde(default)]
+    pub packages: PackagesConfig,
+    #[serde(default)]
+    pub delegates: DelegatesConfig,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RemoteConfig {
+    pub url: String,
+    #[serde(default = "default_branch")]
+    pub branch: String,
+}
+
+fn default_branch() -> String {
+    "main".to_string()
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct MachineConfig {
+    pub name: String,
+    #[serde(default)]
+    pub tags: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PackagesConfig {
+    #[serde(default = "default_true")]
+    pub enabled: bool,
+    #[serde(default)]
+    pub managers: Vec<String>,
+}
+
+fn default_true() -> bool {
+    true
+}
+
+impl Default for PackagesConfig {
+    fn default() -> Self {
+        Self {
+            enabled: true,
+            managers: vec![
+                "pacman".to_string(),
+                "aur".to_string(),
+                "pip".to_string(),
+                "npm".to_string(),
+                "cargo".to_string(),
+            ],
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct DelegatesConfig {
+    #[serde(default)]
+    pub include: Vec<String>,
+    #[serde(default)]
+    pub exclude: Vec<String>,
+}
+
+impl SyncConfig {
+    /// Load sync config from the given bread config directory.
+    pub fn load(config_dir: &Path) -> Result<Self> {
+        let path = config_dir.join("sync.toml");
+        let raw = fs::read_to_string(&path)
+            .with_context(|| "bread: sync not initialized. Run: bread sync init".to_string())?;
+        toml::from_str(&raw).context("failed to parse sync.toml")
+    }
+
+    /// Save sync config to the given bread config directory.
+    pub fn save(&self, config_dir: &Path) -> Result<()> {
+        let path = config_dir.join("sync.toml");
+        fs::create_dir_all(config_dir)?;
+        let raw = toml::to_string_pretty(self).context("failed to serialize sync config")?;
+        fs::write(&path, raw).with_context(|| format!("failed to write {}", path.display()))
+    }
+
+    /// Returns the local sync repo path (`~/.local/share/bread/sync-repo/`).
+    pub fn local_repo_path() -> PathBuf {
+        if let Some(data_dir) = dirs::data_dir() {
+            return data_dir.join("bread").join("sync-repo");
+        }
+        // Fallback using $HOME
+        if let Ok(home) = std::env::var("HOME") {
+            return PathBuf::from(home)
+                .join(".local")
+                .join("share")
+                .join("bread")
+                .join("sync-repo");
+        }
+        PathBuf::from(".local/share/bread/sync-repo")
+    }
+}
+
+/// Returns the bread config directory (`~/.config/bread/`).
+pub fn bread_config_dir() -> PathBuf {
+    if let Some(cfg) = dirs::config_dir() {
+        return cfg.join("bread");
+    }
+    if let Ok(xdg) = std::env::var("XDG_CONFIG_HOME") {
+        return PathBuf::from(xdg).join("bread");
+    }
+    if let Ok(home) = std::env::var("HOME") {
+        return PathBuf::from(home).join(".config").join("bread");
+    }
+    PathBuf::from(".config/bread")
+}
+
+/// Expand `~` to the home directory in a path string.
+pub fn expand_path(path: &str) -> PathBuf {
+    if path == "~" {
+        if let Some(home) = dirs::home_dir() {
+            return home;
+        }
+        if let Ok(home) = std::env::var("HOME") {
+            return PathBuf::from(home);
+        }
+    } else if let Some(rest) = path.strip_prefix("~/") {
+        if let Some(home) = dirs::home_dir() {
+            return home.join(rest);
+        }
+        if let Ok(home) = std::env::var("HOME") {
+            return PathBuf::from(home).join(rest);
+        }
+    }
+    PathBuf::from(path)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::TempDir;
+
+    fn sample_config() -> SyncConfig {
+        SyncConfig {
+            remote: RemoteConfig {
+                url: "git@github.com:user/repo.git".to_string(),
+                branch: "main".to_string(),
+            },
+            machine: MachineConfig {
+                name: "host".to_string(),
+                tags: vec!["mobile".to_string()],
+            },
+            packages: PackagesConfig::default(),
+            delegates: DelegatesConfig::default(),
+        }
+    }
+
+    #[test]
+    fn save_and_load_round_trip() {
+        let tmp = TempDir::new().unwrap();
+        let cfg = sample_config();
+        cfg.save(tmp.path()).unwrap();
+
+        assert!(tmp.path().join("sync.toml").exists());
+
+        let loaded = SyncConfig::load(tmp.path()).unwrap();
+        assert_eq!(loaded.remote.url, cfg.remote.url);
+        assert_eq!(loaded.remote.branch, cfg.remote.branch);
+        assert_eq!(loaded.machine.name, cfg.machine.name);
+        assert_eq!(loaded.machine.tags, cfg.machine.tags);
+    }
+
+    #[test]
+    fn load_missing_config_returns_helpful_error() {
+        let tmp = TempDir::new().unwrap();
+        let err = SyncConfig::load(tmp.path()).unwrap_err();
+        let msg = err.to_string();
+        assert!(
+            msg.contains("sync not initialized") || msg.contains("bread sync init"),
+            "expected init hint, got: {msg}",
+        );
+    }
+
+    #[test]
+    fn load_invalid_toml_returns_parse_error() {
+        let tmp = TempDir::new().unwrap();
+        std::fs::write(tmp.path().join("sync.toml"), "this is not [valid toml").unwrap();
+        let err = SyncConfig::load(tmp.path()).unwrap_err();
+        let msg = format!("{err:#}");
+        assert!(msg.to_lowercase().contains("parse"), "got: {msg}");
+    }
+
+    #[test]
+    fn packages_config_default_includes_all_managers() {
+        let cfg = PackagesConfig::default();
+        assert!(cfg.enabled);
+        assert!(cfg.managers.contains(&"pacman".to_string()));
+        assert!(cfg.managers.contains(&"aur".to_string()));
+        assert!(cfg.managers.contains(&"pip".to_string()));
+        assert!(cfg.managers.contains(&"npm".to_string()));
+        assert!(cfg.managers.contains(&"cargo".to_string()));
+    }
+
+    #[test]
+    fn remote_branch_defaults_to_main_when_omitted() {
+        let raw = r#"
+[remote]
+url = "git@example.com:r.git"
+
+[machine]
+name = "host"
+"#;
+        let cfg: SyncConfig = toml::from_str(raw).unwrap();
+        assert_eq!(cfg.remote.branch, "main");
+    }
+
+    #[test]
+    fn delegates_default_is_empty() {
+        let cfg = DelegatesConfig::default();
+        assert!(cfg.include.is_empty());
+        assert!(cfg.exclude.is_empty());
+    }
+
+    #[test]
+    fn local_repo_path_resolves_to_data_dir() {
+        let path = SyncConfig::local_repo_path();
+        // Must include the bread sync-repo segment at the end.
+        let suffix = path.iter().rev().take(2).collect::<Vec<_>>();
+        assert_eq!(
+            suffix,
+            vec![
+                std::ffi::OsStr::new("sync-repo"),
+                std::ffi::OsStr::new("bread")
+            ]
+        );
+    }
+
+    #[test]
+    fn expand_path_passes_through_absolute_paths() {
+        assert_eq!(expand_path("/etc/bread"), PathBuf::from("/etc/bread"));
+        assert_eq!(expand_path("relative/path"), PathBuf::from("relative/path"));
+    }
+
+    #[test]
+    fn expand_path_expands_tilde_alone_to_home() {
+        let home = dirs::home_dir().or_else(|| std::env::var("HOME").ok().map(PathBuf::from));
+        if let Some(home) = home {
+            assert_eq!(expand_path("~"), home);
+        }
+    }
+
+    #[test]
+    fn expand_path_expands_tilde_prefix() {
+        let home = dirs::home_dir().or_else(|| std::env::var("HOME").ok().map(PathBuf::from));
+        if let Some(home) = home {
+            assert_eq!(expand_path("~/.config"), home.join(".config"));
+        }
+    }
+}

bread-sync/src/delegates.rs

@@ -0,0 +1,247 @@
+use anyhow::Result;
+use glob::Pattern;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use crate::config::expand_path;
+
+/// Copy all files from `src` into `dst`, mirroring the directory tree.
+/// Files present in `dst` but not in `src` are deleted (rsync-style).
+/// Files matching any `exclude` glob are skipped.
+pub fn sync_dir(src: &Path, dst: &Path, exclude: &[String]) -> Result<()> {
+    let patterns: Vec<Pattern> = exclude
+        .iter()
+        .filter_map(|g| Pattern::new(g).ok())
+        .collect();
+
+    fs::create_dir_all(dst)?;
+    sync_dir_inner(src, dst, src, &patterns)
+}
+
+fn sync_dir_inner(src: &Path, dst: &Path, root: &Path, patterns: &[Pattern]) -> Result<()> {
+    // Remove files in dst that don't exist in src.
+    if dst.exists() {
+        for entry in fs::read_dir(dst)? {
+            let entry = entry?;
+            let rel = entry
+                .path()
+                .strip_prefix(dst)
+                .unwrap_or(&entry.path())
+                .to_path_buf();
+            let src_counterpart = src.join(&rel);
+            if !src_counterpart.exists() {
+                let p = entry.path();
+                if p.is_dir() {
+                    let _ = fs::remove_dir_all(&p);
+                } else {
+                    let _ = fs::remove_file(&p);
+                }
+            }
+        }
+    }
+
+    if !src.exists() {
+        return Ok(());
+    }
+
+    for entry in fs::read_dir(src)? {
+        let entry = entry?;
+        let src_path = entry.path();
+        let rel = src_path.strip_prefix(root).unwrap_or(&src_path);
+
+        if is_excluded(rel, root, patterns) {
+            continue;
+        }
+
+        let dst_path = dst.join(src_path.strip_prefix(src).unwrap_or(&src_path));
+
+        if src_path.is_dir() {
+            fs::create_dir_all(&dst_path)?;
+            sync_dir_inner(&src_path, &dst_path, root, patterns)?;
+        } else {
+            if let Some(parent) = dst_path.parent() {
+                fs::create_dir_all(parent)?;
+            }
+            fs::copy(&src_path, &dst_path)?;
+        }
+    }
+    Ok(())
+}
+
+fn is_excluded(rel: &Path, _root: &Path, patterns: &[Pattern]) -> bool {
+    let rel_str = rel.to_string_lossy();
+    let file_name = rel
+        .file_name()
+        .map(|n| n.to_string_lossy())
+        .unwrap_or_default();
+
+    for pat in patterns {
+        // Match against full relative path or just filename
+        if pat.matches(&rel_str) || pat.matches(&file_name) {
+            return true;
+        }
+        // For directory-name patterns (e.g. "**/.git"), also check component names
+        if let Some(pat_str) = pat.as_str().strip_prefix("**/") {
+            for component in rel.components() {
+                if let std::path::Component::Normal(name) = component {
+                    if Pattern::new(pat_str)
+                        .map(|p| p.matches(&name.to_string_lossy()))
+                        .unwrap_or(false)
+                    {
+                        return true;
+                    }
+                }
+            }
+        }
+    }
+    false
+}
+
+/// Resolve delegate paths from the config (expanding `~`).
+pub fn resolve_include_paths(includes: &[String]) -> Vec<(String, PathBuf)> {
+    includes
+        .iter()
+        .map(|s| {
+            let expanded = expand_path(s);
+            let basename = expanded
+                .file_name()
+                .map(|n| n.to_string_lossy().to_string())
+                .unwrap_or_else(|| s.clone());
+            (basename, expanded)
+        })
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs;
+    use tempfile::TempDir;
+
+    #[test]
+    fn sync_dir_copies_nested_tree() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+
+        fs::create_dir_all(src.path().join("a/b/c")).unwrap();
+        fs::write(src.path().join("a/b/c/leaf.txt"), "hello").unwrap();
+        fs::write(src.path().join("root.txt"), "root").unwrap();
+
+        sync_dir(src.path(), dst.path(), &[]).unwrap();
+
+        assert_eq!(
+            fs::read_to_string(dst.path().join("a/b/c/leaf.txt")).unwrap(),
+            "hello"
+        );
+        assert_eq!(
+            fs::read_to_string(dst.path().join("root.txt")).unwrap(),
+            "root"
+        );
+    }
+
+    #[test]
+    fn sync_dir_overwrites_existing_files() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::write(src.path().join("f"), "new").unwrap();
+        fs::write(dst.path().join("f"), "old").unwrap();
+
+        sync_dir(src.path(), dst.path(), &[]).unwrap();
+        assert_eq!(fs::read_to_string(dst.path().join("f")).unwrap(), "new");
+    }
+
+    #[test]
+    fn sync_dir_removes_files_no_longer_in_src() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::write(dst.path().join("orphan.txt"), "to remove").unwrap();
+        fs::write(src.path().join("keeper.txt"), "stay").unwrap();
+
+        sync_dir(src.path(), dst.path(), &[]).unwrap();
+
+        assert!(!dst.path().join("orphan.txt").exists());
+        assert!(dst.path().join("keeper.txt").exists());
+    }
+
+    #[test]
+    fn sync_dir_removes_directories_no_longer_in_src() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::create_dir_all(dst.path().join("ghost-dir")).unwrap();
+        fs::write(dst.path().join("ghost-dir/x"), "").unwrap();
+
+        sync_dir(src.path(), dst.path(), &[]).unwrap();
+        assert!(!dst.path().join("ghost-dir").exists());
+    }
+
+    #[test]
+    fn sync_dir_exclude_filters_by_basename_pattern() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::write(src.path().join("keep.lua"), "lua").unwrap();
+        fs::write(src.path().join("trash.cache"), "").unwrap();
+
+        sync_dir(src.path(), dst.path(), &["**/*.cache".to_string()]).unwrap();
+        assert!(dst.path().join("keep.lua").exists());
+        assert!(!dst.path().join("trash.cache").exists());
+    }
+
+    #[test]
+    fn sync_dir_exclude_filters_nested_directory_by_name() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::create_dir_all(src.path().join(".git/objects")).unwrap();
+        fs::write(src.path().join(".git/objects/abc"), "").unwrap();
+        fs::write(src.path().join("init.lua"), "lua").unwrap();
+
+        sync_dir(src.path(), dst.path(), &["**/.git".to_string()]).unwrap();
+        assert!(dst.path().join("init.lua").exists());
+        assert!(!dst.path().join(".git").exists());
+    }
+
+    #[test]
+    fn sync_dir_creates_destination_if_missing() {
+        let src = TempDir::new().unwrap();
+        let dst_parent = TempDir::new().unwrap();
+        let dst = dst_parent.path().join("brand-new");
+        fs::write(src.path().join("hi"), "hi").unwrap();
+
+        sync_dir(src.path(), &dst, &[]).unwrap();
+        assert!(dst.join("hi").exists());
+    }
+
+    #[test]
+    fn sync_dir_empty_src_clears_dst() {
+        let src = TempDir::new().unwrap();
+        let dst = TempDir::new().unwrap();
+        fs::write(dst.path().join("a"), "").unwrap();
+        fs::write(dst.path().join("b"), "").unwrap();
+
+        sync_dir(src.path(), dst.path(), &[]).unwrap();
+        let remaining: Vec<_> = fs::read_dir(dst.path()).unwrap().collect();
+        assert!(remaining.is_empty());
+    }
+
+    // ─── resolve_include_paths ────────────────────────────────────────────
+
+    #[test]
+    fn resolve_include_paths_uses_basename_as_key() {
+        let includes = vec!["/etc/foo/bar".to_string(), "/var/lib/quux".to_string()];
+        let resolved = resolve_include_paths(&includes);
+        assert_eq!(resolved.len(), 2);
+        assert_eq!(resolved[0].0, "bar");
+        assert_eq!(resolved[0].1, PathBuf::from("/etc/foo/bar"));
+        assert_eq!(resolved[1].0, "quux");
+    }
+
+    #[test]
+    fn resolve_include_paths_expands_tilde_in_source() {
+        let home = dirs::home_dir().or_else(|| std::env::var("HOME").ok().map(PathBuf::from));
+        if let Some(home) = home {
+            let resolved = resolve_include_paths(&["~/Documents".to_string()]);
+            assert_eq!(resolved.len(), 1);
+            assert_eq!(resolved[0].1, home.join("Documents"));
+            assert_eq!(resolved[0].0, "Documents");
+        }
+    }
+}

bread-sync/src/export.rs

@@ -0,0 +1,850 @@
+use anyhow::{Context, Result};
+use chrono::Utc;
+use git2::Repository;
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use crate::config::{expand_path, SyncConfig};
+use crate::delegates::sync_dir;
+use crate::machine::{hostname, MachineProfile};
+use crate::packages;
+
+/// Maps a staged path back to the original absolute path on the source machine.
+/// Drives the import — no hardcoded paths needed.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PathRecord {
+    /// Relative path within the export (e.g. "configs/hypr").
+    pub staging: String,
+    /// Original path with `~` (e.g. "~/.config/hypr").
+    pub original: String,
+    /// Whether this is a single file (false = directory).
+    #[serde(default)]
+    pub is_file: bool,
+}
+
+/// A git repository found on the machine, keyed by its remote URL.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GitRepoRecord {
+    /// Path relative to $HOME (e.g. "Projects/bread").
+    pub path: String,
+    /// Remote URL (e.g. "https://github.com/Breadway/bread.git").
+    pub remote: String,
+    /// Branch that was checked out at export time.
+    pub branch: String,
+}
+
+/// Manifest stored in the export root as `manifest.toml`.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ExportManifest {
+    pub version: u32,
+    pub machine: String,
+    pub hostname: String,
+    pub exported_at: String,
+    /// Explicit staging→original path map for all captured items.
+    #[serde(default)]
+    pub path_map: Vec<PathRecord>,
+    /// High-level list of config dir names (for display).
+    pub configs: Vec<String>,
+    /// Git repos found on the source machine.
+    #[serde(default)]
+    pub repos: Vec<GitRepoRecord>,
+    pub system: bool,
+    pub packages: Vec<String>,
+    // Legacy fields kept for forward compat (ignored on import)
+    #[serde(default)]
+    pub bread: bool,
+    #[serde(default)]
+    pub dotfiles: Vec<String>,
+    #[serde(default)]
+    pub local_bin: Vec<String>,
+    #[serde(default)]
+    pub systemd_units: Vec<String>,
+}
+
+/// Config directories always included in the export (if they exist on disk).
+static BUILTIN_CONFIGS: &[(&str, &str)] = &[
+    ("hypr",      "~/.config/hypr"),
+    ("fish",      "~/.config/fish"),
+    ("kitty",     "~/.config/kitty"),
+    ("nvim",      "~/.config/nvim"),
+    ("ags",       "~/.config/ags"),
+    ("wofi",      "~/.config/wofi"),
+    ("waybar",    "~/.config/waybar"),
+    ("dunst",     "~/.config/dunst"),
+    ("mako",      "~/.config/mako"),
+    ("hyprlock",  "~/.config/hyprlock"),
+    ("hyprpaper", "~/.config/hyprpaper"),
+    ("swaylock",  "~/.config/swaylock"),
+    ("wlogout",   "~/.config/wlogout"),
+    ("swappy",    "~/.config/swappy"),
+    ("btop",      "~/.config/btop"),
+    ("waypaper",  "~/.config/waypaper"),
+    ("wal",       "~/.config/wal"),
+    ("gtk-3.0",   "~/.config/gtk-3.0"),
+    ("gtk-4.0",   "~/.config/gtk-4.0"),
+    ("keyd",      "~/.config/keyd"),
+    ("autostart", "~/.config/autostart"),
+];
+
+/// Standalone dotfiles captured as individual files: (staging-name, source-path).
+static BUILTIN_DOTFILES: &[(&str, &str)] = &[
+    (".gitconfig",     "~/.gitconfig"),
+    ("user-dirs.dirs", "~/.config/user-dirs.dirs"),
+    ("mimeapps.list",  "~/.config/mimeapps.list"),
+    ("ssh_config",     "~/.ssh/config"),
+    (".zshrc",         "~/.zshrc"),
+    (".zprofile",      "~/.zprofile"),
+    (".zshenv",        "~/.zshenv"),
+];
+
+/// System-level directories. World-readable ones are copied directly;
+/// root-only ones (networkmanager, bluetooth) require running with sudo.
+static SYSTEM_PATHS: &[(&str, &str)] = &[
+    ("udev",           "/etc/udev/rules.d"),
+    ("modprobe",       "/etc/modprobe.d"),
+    ("sysctl",         "/etc/sysctl.d"),
+    ("networkmanager", "/etc/NetworkManager/system-connections"),
+    ("bluetooth",      "/var/lib/bluetooth"),
+];
+
+/// Directories excluded from every recursive copy.
+static DEFAULT_EXCLUDES: &[&str] = &[
+    "**/.git",
+    "**/*.cache",
+    "**/node_modules",
+    "**/@girs",
+    "**/__pycache__",
+    "fish_variables?*",
+];
+
+/// Directories skipped when searching for git repos.
+static GIT_SKIP_DIRS: &[&str] = &[
+    ".local", "Nextcloud", "target", "node_modules", "__pycache__",
+    ".cache", "snap", "flatpak", "@girs", "Steam",
+];
+
+// ── stage_export ────────────────────────────────────────────────────────────
+
+/// Build a self-contained snapshot directory at `staging`.
+pub fn stage_export(
+    cfg_dir: &Path,
+    config: &SyncConfig,
+    staging: &Path,
+) -> Result<ExportManifest> {
+    fs::create_dir_all(staging)?;
+
+    let excludes: Vec<String> = DEFAULT_EXCLUDES.iter().map(|s| s.to_string()).collect();
+    let mut path_map: Vec<PathRecord> = Vec::new();
+    let mut included_configs: Vec<String> = Vec::new();
+
+    // Helper: tilde-ify an absolute path for storage in the manifest.
+    let home = dirs::home_dir().unwrap_or_else(|| PathBuf::from("/root"));
+    let tilde = |p: &Path| -> String {
+        p.strip_prefix(&home)
+            .map(|rel| format!("~/{}", rel.display()))
+            .unwrap_or_else(|_| p.display().to_string())
+    };
+
+    // 1. Bread config → bread/
+    let bread_dest = staging.join("bread");
+    sync_dir(cfg_dir, &bread_dest, &excludes).context("failed to snapshot bread config")?;
+    path_map.push(PathRecord {
+        staging: "bread".to_string(),
+        original: tilde(cfg_dir),
+        is_file: false,
+    });
+
+    // 2. Built-in + delegate configs → configs/<name>/
+    let configs_dir = staging.join("configs");
+
+    for (name, raw_path) in BUILTIN_CONFIGS {
+        let src = expand_path(raw_path);
+        if src.exists() {
+            let dst = configs_dir.join(name);
+            sync_dir(&src, &dst, &excludes)
+                .with_context(|| format!("failed to snapshot {raw_path}"))?;
+            path_map.push(PathRecord {
+                staging: format!("configs/{name}"),
+                original: raw_path.to_string(),
+                is_file: false,
+            });
+            included_configs.push(name.to_string());
+        }
+    }
+
+    let delegate_paths = crate::delegates::resolve_include_paths(&config.delegates.include);
+    for (basename, src_path) in &delegate_paths {
+        if src_path.exists() && !included_configs.contains(basename) {
+            let dst = configs_dir.join(basename);
+            sync_dir(src_path, &dst, &config.delegates.exclude)
+                .with_context(|| format!("failed to snapshot delegate {}", src_path.display()))?;
+            path_map.push(PathRecord {
+                staging: format!("configs/{basename}"),
+                original: tilde(src_path),
+                is_file: false,
+            });
+            included_configs.push(basename.clone());
+        }
+    }
+
+    // 3. Dotfiles → dotfiles/
+    let dotfiles_dir = staging.join("dotfiles");
+    fs::create_dir_all(&dotfiles_dir)?;
+
+    for (dest_name, raw_path) in BUILTIN_DOTFILES {
+        let src = expand_path(raw_path);
+        if src.exists() {
+            fs::copy(&src, dotfiles_dir.join(dest_name))
+                .with_context(|| format!("failed to copy {raw_path}"))?;
+            path_map.push(PathRecord {
+                staging: format!("dotfiles/{dest_name}"),
+                original: raw_path.to_string(),
+                is_file: true,
+            });
+        }
+    }
+
+    // 4. ~/.local/bin custom scripts → local-bin/
+    // Skip symlinks (point to installed binaries) and files >512 KB (compiled artifacts).
+    let local_bin_src = expand_path("~/.local/bin");
+    let local_bin_dst = staging.join("local-bin");
+    if local_bin_src.exists() {
+        fs::create_dir_all(&local_bin_dst)?;
+        let mut any = false;
+        for entry in fs::read_dir(&local_bin_src).context("failed to read ~/.local/bin")? {
+            let entry = entry?;
+            let meta = entry.metadata()?;
+            if meta.file_type().is_symlink() || meta.len() > 512 * 1024 {
+                continue;
+            }
+            let path = entry.path();
+            if path.is_file() {
+                let name = path.file_name().unwrap().to_string_lossy().to_string();
+                fs::copy(&path, local_bin_dst.join(&name))?;
+                any = true;
+            }
+        }
+        if any {
+            path_map.push(PathRecord {
+                staging: "local-bin".to_string(),
+                original: "~/.local/bin".to_string(),
+                is_file: false,
+            });
+        }
+    }
+
+    // 5. ~/.local/share/fonts → local-fonts/
+    let fonts_src = expand_path("~/.local/share/fonts");
+    let fonts_dst = staging.join("local-fonts");
+    if fonts_src.exists() {
+        sync_dir(&fonts_src, &fonts_dst, &excludes)
+            .context("failed to snapshot fonts")?;
+        path_map.push(PathRecord {
+            staging: "local-fonts".to_string(),
+            original: "~/.local/share/fonts".to_string(),
+            is_file: false,
+        });
+    }
+
+    // 7. ~/.config/systemd/user → systemd/
+    let systemd_src = expand_path("~/.config/systemd/user");
+    let systemd_dst = staging.join("systemd");
+    if systemd_src.exists() {
+        sync_dir(&systemd_src, &systemd_dst, &excludes)
+            .context("failed to snapshot systemd user units")?;
+        path_map.push(PathRecord {
+            staging: "systemd".to_string(),
+            original: "~/.config/systemd/user".to_string(),
+            is_file: false,
+        });
+    }
+
+    // 8. System configs → system/ (read-only; restore needs sudo)
+    let system_dst = staging.join("system");
+    let mut has_system = false;
+    for (name, raw_path) in SYSTEM_PATHS {
+        let src = PathBuf::from(raw_path);
+        if !src.exists() {
+            continue;
+        }
+        match sync_dir(&src, &system_dst.join(name), &excludes) {
+            Ok(_) => has_system = true,
+            Err(e) => {
+                let msg = e.to_string();
+                if msg.contains("Permission denied") || msg.contains("permission denied") {
+                    eprintln!(
+                        "bread: warning: {raw_path} requires sudo to export (skipping — re-run with sudo to include)"
+                    );
+                } else {
+                    eprintln!("bread: warning: failed to snapshot {raw_path}: {e}");
+                }
+            }
+        }
+    }
+
+    // 9. Package snapshots → packages/
+    let packages_dir = staging.join("packages");
+    let mut included_managers: Vec<String> = Vec::new();
+    if config.packages.enabled {
+        for manager in &config.packages.managers {
+            let dest_file = packages_dir.join(format!("{manager}.txt"));
+            match packages::snapshot(manager, &dest_file) {
+                Ok(true) => included_managers.push(manager.clone()),
+                Ok(false) => {}
+                Err(e) => eprintln!(
+                    "bread: warning: package snapshot for {manager} failed: {e}"
+                ),
+            }
+        }
+    }
+
+    // 10. Machine profile → machines/
+    let machines_dir = staging.join("machines");
+    MachineProfile::new(config.machine.name.clone(), config.machine.tags.clone())
+        .write(&machines_dir)?;
+
+    // 11. Git repositories — find all repos with a remote, commit+push each
+    let nc_dirs = nextcloud_sync_dirs(&home);
+    if !nc_dirs.is_empty() {
+        let labels: Vec<_> = nc_dirs.iter()
+            .map(|p| p.strip_prefix(&home).map(|r| format!("~/{}", r.display())).unwrap_or_else(|_| p.display().to_string()))
+            .collect();
+        eprintln!("bread: skipping Nextcloud-tracked folders: {}", labels.join(", "));
+    }
+    let repos = find_git_repos(&home);
+    commit_and_push_repos(&repos, &home);
+
+    // 12. Manifest
+    let manifest = ExportManifest {
+        version: 2,
+        machine: config.machine.name.clone(),
+        hostname: hostname(),
+        exported_at: Utc::now().to_rfc3339(),
+        path_map,
+        configs: included_configs,
+        repos,
+        system: has_system,
+        packages: included_managers,
+        bread: true,
+        dotfiles: vec![],
+        local_bin: vec![],
+        systemd_units: vec![],
+    };
+    fs::write(
+        staging.join("manifest.toml"),
+        toml::to_string_pretty(&manifest).context("failed to serialize manifest")?,
+    )?;
+
+    // 11. restore.sh
+    let restore_path = staging.join("restore.sh");
+    fs::write(&restore_path, generate_restore_sh(&manifest))?;
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::PermissionsExt;
+        let mut perms = fs::metadata(&restore_path)?.permissions();
+        perms.set_mode(0o755);
+        fs::set_permissions(&restore_path, perms)?;
+    }
+
+    Ok(manifest)
+}
+
+// ── apply_import ────────────────────────────────────────────────────────────
+
+/// Apply a staged snapshot directory to this machine.
+/// Returns a list of human-readable descriptions of what was applied.
+pub fn apply_import(
+    staging: &Path,
+    cfg_dir: &Path,
+    install_packages: bool,
+    clone_repos: bool,
+) -> Result<Vec<String>> {
+    let mut applied: Vec<String> = Vec::new();
+
+    // Read manifest to get the path map
+    let manifest_path = staging.join("manifest.toml");
+    let path_map: Vec<PathRecord> = if manifest_path.exists() {
+        let raw = fs::read_to_string(&manifest_path)?;
+        toml::from_str::<ExportManifest>(&raw)
+            .map(|m| m.path_map)
+            .unwrap_or_default()
+    } else {
+        vec![]
+    };
+
+    if !path_map.is_empty() {
+        // Manifest-driven restore: use path_map for exact original locations
+        for record in &path_map {
+            let src = staging.join(&record.staging);
+            if !src.exists() {
+                continue;
+            }
+            let dst = expand_path(&record.original);
+
+            if record.is_file {
+                if let Some(parent) = dst.parent() {
+                    fs::create_dir_all(parent)?;
+                }
+                // Secure directory permissions for SSH
+                if record.staging.contains("ssh_config") {
+                    #[cfg(unix)]
+                    {
+                        use std::os::unix::fs::PermissionsExt;
+                        if let Some(p) = dst.parent() {
+                            if let Ok(m) = fs::metadata(p) {
+                                let mut perms = m.permissions();
+                                perms.set_mode(0o700);
+                                let _ = fs::set_permissions(p, perms);
+                            }
+                        }
+                    }
+                }
+                fs::copy(&src, &dst)
+                    .with_context(|| format!("failed to restore {}", record.original))?;
+                applied.push(record.original.clone());
+            } else {
+                sync_dir(&src, &dst, &[])
+                    .with_context(|| format!("failed to restore {}", record.original))?;
+                applied.push(record.original.clone());
+
+                // Reload systemd if this was the systemd dir
+                if record.staging == "systemd" {
+                    let _ = std::process::Command::new("systemctl")
+                        .args(["--user", "daemon-reload"])
+                        .status();
+                }
+
+                // Rebuild font cache after restoring fonts
+                if record.staging == "local-fonts" {
+                    let _ = std::process::Command::new("fc-cache").arg("-f").status();
+                }
+
+                // Make local-bin scripts executable
+                if record.staging == "local-bin" {
+                    #[cfg(unix)]
+                    {
+                        use std::os::unix::fs::PermissionsExt;
+                        if let Ok(entries) = fs::read_dir(&dst) {
+                            for entry in entries.filter_map(|e| e.ok()) {
+                                if entry.path().is_file() {
+                                    if let Ok(m) = fs::metadata(entry.path()) {
+                                        let mut perms = m.permissions();
+                                        perms.set_mode(perms.mode() | 0o111);
+                                        let _ = fs::set_permissions(entry.path(), perms);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        // Legacy fallback for v1 exports without path_map
+        let bread_src = staging.join("bread");
+        if bread_src.exists() {
+            sync_dir(&bread_src, cfg_dir, &[])?;
+            applied.push("~/.config/bread".to_string());
+        }
+        let configs_dir = staging.join("configs");
+        if configs_dir.exists() {
+            let config_home = expand_path("~/.config");
+            for entry in fs::read_dir(&configs_dir)?.filter_map(|e| e.ok()) {
+                let src = entry.path();
+                if src.is_dir() {
+                    let name = src.file_name().unwrap().to_string_lossy().to_string();
+                    sync_dir(&src, &config_home.join(&name), &[])?;
+                    applied.push(format!("~/.config/{name}"));
+                }
+            }
+        }
+    }
+
+    // Package installs
+    if install_packages {
+        let packages_dir = staging.join("packages");
+        if packages_dir.exists() {
+            install_packages_from(&packages_dir)?;
+            applied.push("packages installed".to_string());
+        }
+    }
+
+    // Clone git repos
+    if clone_repos {
+        let manifest_path = staging.join("manifest.toml");
+        if manifest_path.exists() {
+            let raw = fs::read_to_string(&manifest_path)?;
+            if let Ok(manifest) = toml::from_str::<ExportManifest>(&raw) {
+                let home = dirs::home_dir()
+                    .unwrap_or_else(|| PathBuf::from(std::env::var("HOME").unwrap_or_default()));
+                for repo in &manifest.repos {
+                    let dest = home.join(&repo.path);
+                    if dest.exists() {
+                        applied.push(format!("skip (exists): ~/{}", repo.path));
+                        continue;
+                    }
+                    if let Some(parent) = dest.parent() {
+                        fs::create_dir_all(parent)?;
+                    }
+                    eprint!("  cloning ~/{} ... ", repo.path);
+                    let status = std::process::Command::new("git")
+                        .args(["clone", "--branch", &repo.branch, &repo.remote])
+                        .arg(&dest)
+                        .status();
+                    match status {
+                        Ok(s) if s.success() => {
+                            eprintln!("done");
+                            applied.push(format!("cloned ~/{}", repo.path));
+                        }
+                        _ => {
+                            eprintln!("failed");
+                            applied.push(format!("clone failed: ~/{}", repo.path));
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    Ok(applied)
+}
+
+// ── commit_and_push_repos ───────────────────────────────────────────────────
+
+fn commit_and_push_repos(repos: &[GitRepoRecord], home: &Path) {
+    if repos.is_empty() {
+        return;
+    }
+    eprintln!("bread: committing and pushing {} repo(s)...", repos.len());
+    for repo in repos {
+        let dir = home.join(&repo.path);
+        let dir_str = dir.to_string_lossy();
+
+        // Stage all changes
+        let add = std::process::Command::new("git")
+            .args(["-C", &dir_str, "add", "-A"])
+            .output();
+        if add.map(|o| !o.status.success()).unwrap_or(true) {
+            eprintln!("  ~/{}: git add failed, skipping", repo.path);
+            continue;
+        }
+
+        // Check if there's anything staged
+        let has_changes = std::process::Command::new("git")
+            .args(["-C", &dir_str, "diff", "--cached", "--quiet"])
+            .status()
+            .map(|s| !s.success())
+            .unwrap_or(false);
+
+        if has_changes {
+            let commit = std::process::Command::new("git")
+                .args(["-C", &dir_str, "commit", "-m", "Commiting for bread sync"])
+                .output();
+            match commit {
+                Ok(o) if o.status.success() => {}
+                Ok(o) => {
+                    eprintln!(
+                        "  ~/{}: commit failed: {}",
+                        repo.path,
+                        String::from_utf8_lossy(&o.stderr).trim()
+                    );
+                    continue;
+                }
+                Err(e) => {
+                    eprintln!("  ~/{}: commit failed: {}", repo.path, e);
+                    continue;
+                }
+            }
+        }
+
+        // Push
+        eprint!("  ~/{}: pushing... ", repo.path);
+        let push = std::process::Command::new("git")
+            .args(["-C", &dir_str, "push"])
+            .output();
+        match push {
+            Ok(o) if o.status.success() => eprintln!("ok"),
+            Ok(o) => eprintln!(
+                "failed: {}",
+                String::from_utf8_lossy(&o.stderr).trim()
+            ),
+            Err(e) => eprintln!("failed: {}", e),
+        }
+    }
+}
+
+// ── find_git_repos ──────────────────────────────────────────────────────────
+
+/// Read ~/.config/Nextcloud/nextcloud.cfg and return all configured local sync roots.
+/// Always includes ~/Nextcloud if it exists, even without a config file.
+fn nextcloud_sync_dirs(home: &Path) -> Vec<PathBuf> {
+    let mut dirs: Vec<PathBuf> = Vec::new();
+
+    let cfg = home.join(".config/Nextcloud/nextcloud.cfg");
+    if let Ok(content) = fs::read_to_string(&cfg) {
+        for line in content.lines() {
+            if let Some(raw) = line.trim().strip_prefix("localPath=") {
+                let p = PathBuf::from(raw);
+                let p = if p.is_absolute() { p } else { home.join(p) };
+                if !dirs.contains(&p) {
+                    dirs.push(p);
+                }
+            }
+        }
+    }
+
+    // Always treat ~/Nextcloud as off-limits if it exists
+    let default_nc = home.join("Nextcloud");
+    if default_nc.exists() && !dirs.contains(&default_nc) {
+        dirs.push(default_nc);
+    }
+
+    dirs
+}
+
+fn find_git_repos(home: &Path) -> Vec<GitRepoRecord> {
+    let nc_dirs = nextcloud_sync_dirs(home);
+    let mut repos: Vec<GitRepoRecord> = Vec::new();
+
+    // Home root at depth 1 only (e.g. ~/bread, ~/yay, ~/colorshell)
+    walk_repos(home, home, 0, 1, &mut repos, &nc_dirs);
+
+    // Deeper search in common project directories
+    for subdir in &["Projects", "Documents", "src", "dev", "code", "repos", "builds"] {
+        let p = home.join(subdir);
+        if p.exists() {
+            walk_repos(&p, home, 0, 3, &mut repos, &nc_dirs);
+        }
+    }
+
+    // .config at depth 1 (e.g. ~/.config/hypr, ~/.config/wificonf)
+    let config_dir = home.join(".config");
+    if config_dir.exists() {
+        walk_repos(&config_dir, home, 0, 1, &mut repos, &nc_dirs);
+    }
+
+    // Deduplicate by path, sort for determinism
+    repos.sort_by(|a, b| a.path.cmp(&b.path));
+    repos.dedup_by(|a, b| a.path == b.path);
+    repos
+}
+
+fn walk_repos(dir: &Path, home: &Path, depth: u32, max_depth: u32, repos: &mut Vec<GitRepoRecord>, nc_dirs: &[PathBuf]) {
+    // Skip anything inside a Nextcloud sync root
+    if nc_dirs.iter().any(|nc| dir.starts_with(nc)) {
+        return;
+    }
+
+    if dir.join(".git").exists() {
+        if let Ok(repo) = Repository::open(dir) {
+            let remote_url = repo
+                .find_remote("origin")
+                .ok()
+                .and_then(|r| r.url().map(str::to_string));
+
+            if let Some(remote) = remote_url {
+                let branch = repo
+                    .head()
+                    .ok()
+                    .and_then(|h| h.shorthand().map(str::to_string))
+                    .unwrap_or_else(|| "main".to_string());
+
+                let rel = dir
+                    .strip_prefix(home)
+                    .map(|p| p.to_string_lossy().to_string())
+                    .unwrap_or_else(|_| dir.to_string_lossy().to_string());
+
+                repos.push(GitRepoRecord { path: rel, remote, branch });
+            }
+        }
+        return; // don't recurse into git repos (skip submodules)
+    }
+
+    if depth >= max_depth {
+        return;
+    }
+
+    if let Ok(entries) = fs::read_dir(dir) {
+        let mut entries: Vec<_> = entries.filter_map(|e| e.ok()).collect();
+        entries.sort_by_key(|e| e.file_name());
+
+        for entry in entries {
+            let path = entry.path();
+            if !path.is_dir() {
+                continue;
+            }
+            let name = path.file_name().unwrap_or_default().to_string_lossy();
+            if GIT_SKIP_DIRS.contains(&name.as_ref()) {
+                continue;
+            }
+            walk_repos(&path, home, depth + 1, max_depth, repos, nc_dirs);
+        }
+    }
+}
+
+// ── package install ─────────────────────────────────────────────────────────
+
+fn install_packages_from(packages_dir: &Path) -> Result<()> {
+    let pacman_file = packages_dir.join("pacman.txt");
+    if pacman_file.exists() {
+        let pkgs = packages::parse_pacman(&fs::read_to_string(&pacman_file)?);
+        if !pkgs.is_empty() {
+            eprintln!("bread: installing {} pacman packages...", pkgs.len());
+            let _ = std::process::Command::new("sudo")
+                .args(["pacman", "-S", "--needed"])
+                .args(&pkgs)
+                .status();
+        }
+    }
+    let cargo_file = packages_dir.join("cargo.txt");
+    if cargo_file.exists() {
+        for pkg in packages::parse_cargo(&fs::read_to_string(&cargo_file)?) {
+            let _ = std::process::Command::new("cargo").args(["install", &pkg]).status();
+        }
+    }
+    let pip_file = packages_dir.join("pip.txt");
+    if pip_file.exists() {
+        let _ = std::process::Command::new("pip")
+            .args(["install", "--user", "-r"])
+            .arg(&pip_file)
+            .status();
+    }
+    let npm_file = packages_dir.join("npm.txt");
+    if npm_file.exists() {
+        for pkg in packages::parse_npm(&fs::read_to_string(&npm_file)?) {
+            let _ = std::process::Command::new("npm").args(["install", "-g", &pkg]).status();
+        }
+    }
+    Ok(())
+}
+
+// ── restore.sh ───────────────────────────────────────────────────────────────
+
+fn generate_restore_sh(manifest: &ExportManifest) -> String {
+    let ts = &manifest.exported_at[..16];
+    let mut s = String::new();
+
+    s.push_str("#!/bin/bash\n");
+    s.push_str("set -e\n");
+    s.push_str("cd \"$(dirname \"$0\")\"\n");
+    s.push_str("RESTORE_DIR=\"$(pwd)\"\n\n");
+    s.push_str(&format!(
+        "echo \"Restoring bread snapshot for {} ({})\"\n\n",
+        manifest.machine, ts
+    ));
+
+    // Config dirs and dotfiles from path_map
+    let dirs: Vec<&PathRecord> = manifest.path_map.iter().filter(|r| !r.is_file).collect();
+    let files: Vec<&PathRecord> = manifest.path_map.iter().filter(|r| r.is_file).collect();
+
+    if !dirs.is_empty() {
+        s.push_str("# configs and directories\n");
+        for r in &dirs {
+            let dst = &r.original;
+            let src = &r.staging;
+            s.push_str(&format!("if [ -e \"$RESTORE_DIR/{src}\" ]; then\n"));
+            s.push_str(&format!("  mkdir -p \"{dst}\"\n"));
+            s.push_str(&format!("  cp -r \"$RESTORE_DIR/{src}/.\" \"{dst}/\"\n"));
+            if r.staging == "systemd" {
+                s.push_str("  systemctl --user daemon-reload\n");
+            }
+            if r.staging == "local-bin" {
+                s.push_str("  chmod +x \"${dst}\"/*\n");
+            }
+            s.push_str(&format!("  echo \"[OK] {dst}\"\n"));
+            s.push_str("fi\n");
+        }
+        s.push('\n');
+    }
+
+    if !files.is_empty() {
+        s.push_str("# dotfiles\n");
+        for r in &files {
+            let dst = &r.original;
+            let src = &r.staging;
+            s.push_str(&format!("if [ -f \"$RESTORE_DIR/{src}\" ]; then\n"));
+            if r.staging.contains("ssh_config") {
+                s.push_str("  mkdir -p ~/.ssh && chmod 700 ~/.ssh\n");
+            }
+            // Expand ~ in destination for shell
+            let dst_shell = dst.replace('~', "$HOME");
+            s.push_str(&format!("  cp \"$RESTORE_DIR/{src}\" \"{dst_shell}\"\n"));
+            s.push_str(&format!("  echo \"[OK] {dst}\"\n"));
+            s.push_str("fi\n");
+        }
+        s.push('\n');
+    }
+
+    // Packages
+    if !manifest.packages.is_empty() {
+        s.push_str("echo \"\"\n");
+        s.push_str("echo \"--- Package restore commands (not run automatically) ---\"\n");
+        if manifest.packages.contains(&"pacman".to_string()) {
+            s.push_str("echo \"  pacman:  awk '{print \\$1}' \\\"$RESTORE_DIR/packages/pacman.txt\\\" | sudo pacman -S --needed -\"\n");
+        }
+        if manifest.packages.contains(&"cargo".to_string()) {
+            s.push_str("echo \"  cargo:   grep -v '^ ' \\\"$RESTORE_DIR/packages/cargo.txt\\\" | awk '{print \\$1}' | xargs -I{} cargo install {}\"\n");
+        }
+        if manifest.packages.contains(&"pip".to_string()) {
+            s.push_str("echo \"  pip:     pip install --user -r \\\"$RESTORE_DIR/packages/pip.txt\\\"\"\n");
+        }
+        if manifest.packages.contains(&"npm".to_string()) {
+            s.push_str("echo \"  npm:     awk -F/ '{print \\$NF}' \\\"$RESTORE_DIR/packages/npm.txt\\\" | xargs npm install -g\"\n");
+        }
+        s.push('\n');
+    }
+
+    // System files
+    if manifest.system {
+        s.push_str("echo \"\"\n");
+        s.push_str("echo \"--- System files (require sudo, not applied automatically) ---\"\n");
+        s.push_str("if [ -d \"$RESTORE_DIR/system/udev\" ]; then\n");
+        s.push_str("  echo \"  udev:           sudo cp \\\"$RESTORE_DIR/system/udev/\\\"* /etc/udev/rules.d/ && sudo udevadm control --reload-rules\"\n");
+        s.push_str("fi\n");
+        s.push_str("if [ -d \"$RESTORE_DIR/system/modprobe\" ]; then\n");
+        s.push_str("  echo \"  modprobe:       sudo cp \\\"$RESTORE_DIR/system/modprobe/\\\"* /etc/modprobe.d/\"\n");
+        s.push_str("fi\n");
+        s.push_str("if [ -d \"$RESTORE_DIR/system/sysctl\" ]; then\n");
+        s.push_str("  echo \"  sysctl:         sudo cp \\\"$RESTORE_DIR/system/sysctl/\\\"* /etc/sysctl.d/ && sudo sysctl --system\"\n");
+        s.push_str("fi\n");
+        s.push_str("if [ -d \"$RESTORE_DIR/system/networkmanager\" ]; then\n");
+        s.push_str("  echo \"  networkmanager: sudo cp \\\"$RESTORE_DIR/system/networkmanager/\\\"* /etc/NetworkManager/system-connections/ && sudo chmod 600 /etc/NetworkManager/system-connections/* && sudo systemctl restart NetworkManager\"\n");
+        s.push_str("fi\n");
+        s.push_str("if [ -d \"$RESTORE_DIR/system/bluetooth\" ]; then\n");
+        s.push_str("  echo \"  bluetooth:      sudo cp -r \\\"$RESTORE_DIR/system/bluetooth/\\\"* /var/lib/bluetooth/ && sudo systemctl restart bluetooth\"\n");
+        s.push_str("fi\n\n");
+    }
+
+    // Git repos
+    if !manifest.repos.is_empty() {
+        s.push_str("echo \"\"\n");
+        s.push_str("echo \"--- Git repositories ---\"\n");
+        for repo in &manifest.repos {
+            let dest = format!("$HOME/{}", repo.path);
+            let branch = &repo.branch;
+            let remote = &repo.remote;
+            // Create parent dir and clone; skip if already present
+            let parent = std::path::Path::new(&repo.path)
+                .parent()
+                .map(|p| p.to_string_lossy().to_string())
+                .unwrap_or_default();
+            if !parent.is_empty() {
+                s.push_str(&format!("mkdir -p \"$HOME/{parent}\"\n"));
+            }
+            s.push_str(&format!(
+                "if [ ! -d \"{dest}/.git\" ]; then\n"
+            ));
+            s.push_str(&format!(
+                "  git clone --branch {branch} {remote} \"{dest}\" && echo \"[OK] ~/{}\"\n",
+                repo.path
+            ));
+            s.push_str(&format!(
+                "else\n  echo \"[skip] ~/{} (already exists)\"\nfi\n",
+                repo.path
+            ));
+        }
+    }
+
+    s
+}

bread-sync/src/git.rs

@@ -0,0 +1,364 @@
+use anyhow::{Context, Result};
+use git2::{
+    build::CheckoutBuilder, Cred, FetchOptions, IndexAddOption, PushOptions, RemoteCallbacks,
+    Repository, Signature, StatusOptions,
+};
+use std::path::{Path, PathBuf};
+
+/// Wraps a git2 repository with sync-specific operations.
+pub struct SyncRepo {
+    repo: Repository,
+    pub path: PathBuf,
+}
+
+impl SyncRepo {
+    /// Open an existing repository at `path`.
+    pub fn open(path: &Path) -> Result<Self> {
+        let repo = Repository::open(path)
+            .with_context(|| format!("failed to open git repo at {}", path.display()))?;
+        Ok(Self {
+            repo,
+            path: path.to_path_buf(),
+        })
+    }
+
+    /// Clone `url` into `path`.
+    pub fn clone_from(url: &str, path: &Path) -> Result<Self> {
+        let fetch_opts = make_fetch_options();
+        let mut builder = git2::build::RepoBuilder::new();
+        builder.fetch_options(fetch_opts);
+        let repo = builder
+            .clone(url, path)
+            .with_context(|| format!("failed to clone {} into {}", url, path.display()))?;
+        Ok(Self {
+            repo,
+            path: path.to_path_buf(),
+        })
+    }
+
+    /// Open the repo at `path` if it exists; otherwise clone from `url`.
+    pub fn open_or_clone(url: &str, path: &Path) -> Result<Self> {
+        if path.exists() {
+            Self::open(path)
+        } else {
+            std::fs::create_dir_all(path)?;
+            Self::clone_from(url, path)
+        }
+    }
+
+    /// Initialize a new empty repository at `path` with `main` as the initial branch.
+    pub fn init(path: &Path) -> Result<Self> {
+        std::fs::create_dir_all(path)?;
+        let mut opts = git2::RepositoryInitOptions::new();
+        opts.initial_head("main");
+        let repo = Repository::init_opts(path, &opts)
+            .with_context(|| format!("failed to init git repo at {}", path.display()))?;
+        Ok(Self {
+            repo,
+            path: path.to_path_buf(),
+        })
+    }
+
+    /// Stage all changes (equivalent to `git add -A`).
+    pub fn stage_all(&self) -> Result<()> {
+        let mut index = self.repo.index().context("failed to get git index")?;
+        index
+            .add_all(["*"].iter(), IndexAddOption::DEFAULT, None)
+            .context("failed to stage changes")?;
+        index.write().context("failed to write git index")?;
+        Ok(())
+    }
+
+    /// Create a commit. Returns `None` if there are no staged changes.
+    pub fn commit(&self, message: &str) -> Result<Option<git2::Oid>> {
+        self.stage_all()?;
+
+        let mut index = self.repo.index()?;
+        let tree_id = index.write_tree()?;
+
+        // Check if tree matches current HEAD (nothing to commit)
+        if let Ok(head) = self.repo.head() {
+            if let Ok(head_commit) = head.peel_to_commit() {
+                if head_commit.tree_id() == tree_id {
+                    return Ok(None);
+                }
+            }
+        }
+
+        let tree = self.repo.find_tree(tree_id)?;
+        let sig = Signature::now("Bread Sync", "bread@localhost")?;
+
+        let oid = match self.repo.head() {
+            Ok(head) => {
+                let parent = head.peel_to_commit()?;
+                self.repo
+                    .commit(Some("HEAD"), &sig, &sig, message, &tree, &[&parent])?
+            }
+            Err(_) => {
+                // First commit — no parents
+                self.repo
+                    .commit(Some("HEAD"), &sig, &sig, message, &tree, &[])?
+            }
+        };
+
+        Ok(Some(oid))
+    }
+
+    /// Push `branch` to `remote_name`.
+    pub fn push(&self, remote_name: &str, branch: &str) -> Result<()> {
+        let mut remote = self
+            .repo
+            .find_remote(remote_name)
+            .with_context(|| format!("remote '{}' not found", remote_name))?;
+
+        let refspec = format!("refs/heads/{branch}:refs/heads/{branch}");
+        let mut push_opts = PushOptions::new();
+        let callbacks = make_callbacks();
+        push_opts.remote_callbacks(callbacks);
+        remote
+            .push(&[refspec.as_str()], Some(&mut push_opts))
+            .context("git push failed")?;
+        Ok(())
+    }
+
+    /// Fetch `branch` from `remote_name` without merging.
+    pub fn fetch(&self, remote_name: &str, branch: &str) -> Result<()> {
+        let mut remote = self
+            .repo
+            .find_remote(remote_name)
+            .with_context(|| format!("remote '{}' not found", remote_name))?;
+        let mut fetch_opts = make_fetch_options();
+        remote
+            .fetch(&[branch], Some(&mut fetch_opts), None)
+            .context("git fetch failed")?;
+        Ok(())
+    }
+
+    /// Fetch and fast-forward merge. Errors on non-fast-forward.
+    pub fn pull(&self, remote_name: &str, branch: &str) -> Result<()> {
+        self.fetch(remote_name, branch)?;
+
+        let fetch_head = self
+            .repo
+            .find_reference("FETCH_HEAD")
+            .context("FETCH_HEAD not found after fetch")?;
+        let fetch_commit = self
+            .repo
+            .reference_to_annotated_commit(&fetch_head)
+            .context("failed to get annotated commit from FETCH_HEAD")?;
+
+        let (analysis, _) = self
+            .repo
+            .merge_analysis(&[&fetch_commit])
+            .context("merge analysis failed")?;
+
+        if analysis.is_up_to_date() {
+            return Ok(());
+        }
+
+        if analysis.is_fast_forward() {
+            let target_id = fetch_commit.id();
+            let ref_name = format!("refs/heads/{branch}");
+            match self.repo.find_reference(&ref_name) {
+                Ok(mut r) => {
+                    r.set_target(target_id, "fast-forward pull")?;
+                }
+                Err(_) => {
+                    self.repo
+                        .reference(&ref_name, target_id, true, "fast-forward pull")?;
+                }
+            }
+            self.repo.set_head(&ref_name)?;
+            self.repo
+                .checkout_head(Some(CheckoutBuilder::default().force()))
+                .context("checkout failed during pull")?;
+            Ok(())
+        } else {
+            anyhow::bail!(
+                "bread: sync conflict — resolve manually in {}",
+                self.path.display()
+            )
+        }
+    }
+
+    /// Returns true if working tree has no uncommitted changes.
+    pub fn is_clean(&self) -> Result<bool> {
+        Ok(self.local_changes()?.is_empty())
+    }
+
+    /// Returns list of (status_char, path) for working-tree changes vs HEAD.
+    pub fn local_changes(&self) -> Result<Vec<(char, String)>> {
+        let mut status_opts = StatusOptions::new();
+        status_opts
+            .include_untracked(true)
+            .recurse_untracked_dirs(true);
+
+        let statuses = self
+            .repo
+            .statuses(Some(&mut status_opts))
+            .context("failed to get git status")?;
+
+        let mut out = Vec::new();
+        for entry in statuses.iter() {
+            let s = entry.status();
+            let ch = if s.contains(git2::Status::INDEX_NEW) || s.contains(git2::Status::WT_NEW) {
+                'A'
+            } else if s.contains(git2::Status::INDEX_DELETED)
+                || s.contains(git2::Status::WT_DELETED)
+            {
+                'D'
+            } else {
+                'M'
+            };
+            if let Some(path) = entry.path() {
+                out.push((ch, path.to_string()));
+            }
+        }
+        Ok(out)
+    }
+
+    /// Returns list of (status_char, path) for changes on remote not yet pulled.
+    pub fn remote_changes(&self, remote_name: &str, branch: &str) -> Result<Vec<(char, String)>> {
+        // We compare HEAD to remote/branch
+        let remote_ref = format!("refs/remotes/{remote_name}/{branch}");
+        let remote_oid = match self.repo.find_reference(&remote_ref) {
+            Ok(r) => r.peel_to_commit()?.id(),
+            Err(_) => return Ok(vec![]),
+        };
+
+        let head_commit = match self.repo.head() {
+            Ok(h) => h.peel_to_commit()?.id(),
+            Err(_) => return Ok(vec![]),
+        };
+
+        if head_commit == remote_oid {
+            return Ok(vec![]);
+        }
+
+        let head_tree = self.repo.find_commit(head_commit)?.tree()?;
+        let remote_tree = self.repo.find_commit(remote_oid)?.tree()?;
+
+        let diff = self
+            .repo
+            .diff_tree_to_tree(Some(&head_tree), Some(&remote_tree), None)
+            .context("failed to compute remote diff")?;
+
+        let mut out = Vec::new();
+        for delta in diff.deltas() {
+            let ch = match delta.status() {
+                git2::Delta::Added => 'A',
+                git2::Delta::Deleted => 'D',
+                _ => 'M',
+            };
+            if let Some(path) = delta.new_file().path() {
+                out.push((ch, path.to_string_lossy().to_string()));
+            }
+        }
+        Ok(out)
+    }
+
+    /// Return a unified diff string of working tree vs HEAD.
+    pub fn working_diff(&self) -> Result<String> {
+        let head_tree = match self.repo.head() {
+            Ok(h) => Some(h.peel_to_tree()?),
+            Err(_) => None,
+        };
+
+        let diff = self
+            .repo
+            .diff_tree_to_workdir_with_index(head_tree.as_ref(), None)
+            .context("failed to compute working diff")?;
+
+        let mut out = String::new();
+        diff.print(git2::DiffFormat::Patch, |_delta, _hunk, line| {
+            let prefix = match line.origin() {
+                '+' | '-' | ' ' => line.origin().to_string(),
+                _ => String::new(),
+            };
+            out.push_str(&prefix);
+            if let Ok(s) = std::str::from_utf8(line.content()) {
+                out.push_str(s);
+            }
+            true
+        })
+        .context("failed to format diff")?;
+
+        Ok(out)
+    }
+
+    /// Return a unified diff string between HEAD and remote branch HEAD.
+    pub fn remote_diff(&self, remote_name: &str, branch: &str) -> Result<String> {
+        let remote_ref = format!("refs/remotes/{remote_name}/{branch}");
+        let remote_oid = self
+            .repo
+            .find_reference(&remote_ref)
+            .and_then(|r| r.peel_to_commit())
+            .map(|c| c.id())
+            .ok();
+
+        let head_tree = match self.repo.head() {
+            Ok(h) => Some(h.peel_to_tree()?),
+            Err(_) => None,
+        };
+        let remote_tree = remote_oid
+            .and_then(|id| self.repo.find_commit(id).ok())
+            .and_then(|c| c.tree().ok());
+
+        let diff = self
+            .repo
+            .diff_tree_to_tree(head_tree.as_ref(), remote_tree.as_ref(), None)
+            .context("failed to compute remote diff")?;
+
+        let mut out = String::new();
+        diff.print(git2::DiffFormat::Patch, |_delta, _hunk, line| {
+            let prefix = match line.origin() {
+                '+' | '-' | ' ' => line.origin().to_string(),
+                _ => String::new(),
+            };
+            out.push_str(&prefix);
+            if let Ok(s) = std::str::from_utf8(line.content()) {
+                out.push_str(s);
+            }
+            true
+        })
+        .context("failed to format remote diff")?;
+
+        Ok(out)
+    }
+
+    /// Set a named remote.
+    pub fn set_remote(&self, name: &str, url: &str) -> Result<()> {
+        let _ = self.repo.remote_delete(name);
+        self.repo
+            .remote(name, url)
+            .with_context(|| format!("failed to set remote {name}"))?;
+        Ok(())
+    }
+
+    /// Return the timestamp of the last commit, or None if no commits.
+    pub fn last_commit_time(&self) -> Option<chrono::DateTime<chrono::Local>> {
+        let head = self.repo.head().ok()?;
+        let commit = head.peel_to_commit().ok()?;
+        let t = commit.time();
+        // git2::Time uses seconds-from-epoch and offset-in-minutes
+        let naive = chrono::DateTime::from_timestamp(t.seconds(), 0)?;
+        Some(naive.with_timezone(&chrono::Local))
+    }
+}
+
+fn make_callbacks<'a>() -> RemoteCallbacks<'a> {
+    let mut cb = RemoteCallbacks::new();
+    cb.credentials(|_url, username_from_url, allowed_types| {
+        if allowed_types.contains(git2::CredentialType::SSH_KEY) {
+            return Cred::ssh_key_from_agent(username_from_url.unwrap_or("git"));
+        }
+        Cred::default()
+    });
+    cb
+}
+
+fn make_fetch_options<'a>() -> FetchOptions<'a> {
+    let mut opts = FetchOptions::new();
+    opts.remote_callbacks(make_callbacks());
+    opts
+}

bread-sync/src/lib.rs

@@ -0,0 +1,11 @@
+/// Bread sync: snapshot and restore system state via a Git remote.
+pub mod config;
+pub mod delegates;
+pub mod export;
+pub mod git;
+pub mod machine;
+pub mod packages;
+
+pub use config::SyncConfig;
+pub use export::{apply_import, stage_export, ExportManifest};
+pub use git::SyncRepo;

bread-sync/src/machine.rs

@@ -0,0 +1,167 @@
+use anyhow::{Context, Result};
+use chrono::Utc;
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::Path;
+
+/// Machine profile stored in `machines/<name>.toml` in the sync repo.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct MachineProfile {
+    pub name: String,
+    pub hostname: String,
+    pub tags: Vec<String>,
+    pub last_sync: String, // RFC 3339
+}
+
+impl MachineProfile {
+    /// Create a new profile for this machine.
+    pub fn new(name: String, tags: Vec<String>) -> Self {
+        Self {
+            hostname: hostname(),
+            name,
+            tags,
+            last_sync: Utc::now().to_rfc3339(),
+        }
+    }
+
+    /// Write this profile to `<machines_dir>/<name>.toml`.
+    pub fn write(&self, machines_dir: &Path) -> Result<()> {
+        fs::create_dir_all(machines_dir)?;
+        let path = machines_dir.join(format!("{}.toml", self.name));
+        let raw = toml::to_string_pretty(self).context("failed to serialize machine profile")?;
+        fs::write(&path, raw).with_context(|| format!("failed to write {}", path.display()))
+    }
+
+    /// Read a machine profile from `<machines_dir>/<name>.toml`.
+    pub fn read(machines_dir: &Path, name: &str) -> Result<Self> {
+        let path = machines_dir.join(format!("{name}.toml"));
+        let raw = fs::read_to_string(&path)
+            .with_context(|| format!("failed to read {}", path.display()))?;
+        toml::from_str(&raw).context("failed to parse machine profile")
+    }
+
+    /// List all machine profiles in `machines_dir`.
+    pub fn list(machines_dir: &Path) -> Result<Vec<Self>> {
+        if !machines_dir.exists() {
+            return Ok(vec![]);
+        }
+        let mut out = Vec::new();
+        for entry in fs::read_dir(machines_dir)? {
+            let entry = entry?;
+            let path = entry.path();
+            if path.extension().and_then(|e| e.to_str()) == Some("toml") {
+                if let Ok(raw) = fs::read_to_string(&path) {
+                    if let Ok(profile) = toml::from_str::<Self>(&raw) {
+                        out.push(profile);
+                    }
+                }
+            }
+        }
+        out.sort_by(|a, b| a.name.cmp(&b.name));
+        Ok(out)
+    }
+}
+
+/// Return the system hostname.
+pub fn hostname() -> String {
+    // Try gethostname via libc, fall back to environment variable.
+    let mut buf = [0u8; 256];
+    unsafe {
+        if libc::gethostname(buf.as_mut_ptr() as *mut libc::c_char, buf.len()) == 0 {
+            if let Ok(s) = std::ffi::CStr::from_ptr(buf.as_ptr() as *const libc::c_char).to_str() {
+                return s.to_string();
+            }
+        }
+    }
+    std::env::var("HOSTNAME")
+        .or_else(|_| std::env::var("HOST"))
+        .unwrap_or_else(|_| "unknown".to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::TempDir;
+
+    #[test]
+    fn write_creates_machines_dir_if_missing() {
+        let tmp = TempDir::new().unwrap();
+        let machines = tmp.path().join("does/not/exist/yet");
+        let profile = MachineProfile::new("host".to_string(), vec![]);
+        profile.write(&machines).unwrap();
+        assert!(machines.join("host.toml").exists());
+    }
+
+    #[test]
+    fn write_overwrites_existing_profile() {
+        let tmp = TempDir::new().unwrap();
+        let p1 = MachineProfile::new("host".to_string(), vec!["a".to_string()]);
+        p1.write(tmp.path()).unwrap();
+
+        let p2 = MachineProfile::new("host".to_string(), vec!["b".to_string(), "c".to_string()]);
+        p2.write(tmp.path()).unwrap();
+
+        let loaded = MachineProfile::read(tmp.path(), "host").unwrap();
+        assert_eq!(loaded.tags, vec!["b", "c"]);
+    }
+
+    #[test]
+    fn list_returns_empty_when_dir_missing() {
+        let tmp = TempDir::new().unwrap();
+        let missing = tmp.path().join("nope");
+        assert!(MachineProfile::list(&missing).unwrap().is_empty());
+    }
+
+    #[test]
+    fn list_returns_sorted_profiles_only_for_toml_files() {
+        let tmp = TempDir::new().unwrap();
+        MachineProfile::new("zebra".to_string(), vec![])
+            .write(tmp.path())
+            .unwrap();
+        MachineProfile::new("alpha".to_string(), vec![])
+            .write(tmp.path())
+            .unwrap();
+        MachineProfile::new("middle".to_string(), vec![])
+            .write(tmp.path())
+            .unwrap();
+        // Non-toml file should be ignored.
+        std::fs::write(tmp.path().join("notes.txt"), "ignored").unwrap();
+
+        let list = MachineProfile::list(tmp.path()).unwrap();
+        let names: Vec<&str> = list.iter().map(|m| m.name.as_str()).collect();
+        assert_eq!(names, vec!["alpha", "middle", "zebra"]);
+    }
+
+    #[test]
+    fn list_skips_invalid_toml_files_without_failing() {
+        let tmp = TempDir::new().unwrap();
+        MachineProfile::new("valid".to_string(), vec![])
+            .write(tmp.path())
+            .unwrap();
+        std::fs::write(tmp.path().join("garbage.toml"), "not valid [toml").unwrap();
+
+        let list = MachineProfile::list(tmp.path()).unwrap();
+        assert_eq!(list.len(), 1);
+        assert_eq!(list[0].name, "valid");
+    }
+
+    #[test]
+    fn read_returns_helpful_error_when_missing() {
+        let tmp = TempDir::new().unwrap();
+        let err = MachineProfile::read(tmp.path(), "ghost").unwrap_err();
+        assert!(err.to_string().contains("failed to read"));
+    }
+
+    #[test]
+    fn new_assigns_current_hostname_and_timestamp() {
+        let p = MachineProfile::new("h".to_string(), vec![]);
+        assert!(!p.hostname.is_empty());
+        assert!(chrono::DateTime::parse_from_rfc3339(&p.last_sync).is_ok());
+    }
+
+    #[test]
+    fn hostname_returns_non_empty_string() {
+        // Whether libc or env fallback fires, the result must be non-empty.
+        assert!(!hostname().is_empty());
+    }
+}

bread-sync/src/packages.rs

@@ -0,0 +1,257 @@
+use anyhow::Result;
+use std::fs;
+use std::path::Path;
+use std::process::Command;
+
+/// Snapshot a package manager's installed packages and write to `dest`.
+/// Returns true if the snapshot was written, false if the package manager
+/// is not installed (warns instead of failing).
+pub fn snapshot(manager: &str, dest: &Path) -> Result<bool> {
+    let content = match manager {
+        "pacman" => run_pacman()?,
+        "aur" => run_aur()?,
+        "pip" => run_pip()?,
+        "npm" => run_npm()?,
+        "cargo" => run_cargo()?,
+        other => {
+            eprintln!("bread: unknown package manager '{}', skipping", other);
+            return Ok(false);
+        }
+    };
+
+    let Some(content) = content else {
+        eprintln!("bread: package manager '{}' not found, skipping", manager);
+        return Ok(false);
+    };
+
+    if let Some(parent) = dest.parent() {
+        fs::create_dir_all(parent)?;
+    }
+    fs::write(dest, content)?;
+    Ok(true)
+}
+
+/// Parse a pacman snapshot (one "name version" per line, space-separated) and
+/// return a list of package names.
+pub fn parse_pacman(content: &str) -> Vec<String> {
+    content
+        .lines()
+        .filter(|l| !l.trim().is_empty())
+        .map(|l| l.split_whitespace().next().unwrap_or(l).to_string())
+        .collect()
+}
+
+/// Parse a pip freeze snapshot and return package names.
+pub fn parse_pip(content: &str) -> Vec<String> {
+    content
+        .lines()
+        .filter(|l| !l.trim().is_empty() && !l.starts_with('#'))
+        .map(|l| {
+            l.split("==")
+                .next()
+                .unwrap_or(l)
+                .split(">=")
+                .next()
+                .unwrap_or(l)
+                .trim()
+                .to_string()
+        })
+        .collect()
+}
+
+/// Parse npm global packages list (parseable format, one path per line).
+pub fn parse_npm(content: &str) -> Vec<String> {
+    content
+        .lines()
+        .filter(|l| !l.trim().is_empty())
+        .filter_map(|l| {
+            // `npm list -g --parseable` outputs paths like /usr/lib/node_modules/pkg
+            let name = Path::new(l)
+                .file_name()
+                .map(|n| n.to_string_lossy().to_string())?;
+            // Skip npm itself and the root node_modules
+            if name == "node_modules" {
+                return None;
+            }
+            Some(name)
+        })
+        .collect()
+}
+
+/// Parse cargo install list.
+/// Format: "crate v1.2.3 (some-path):\n  binary\n..."
+pub fn parse_cargo(content: &str) -> Vec<String> {
+    content
+        .lines()
+        .filter(|l| !l.starts_with(' ') && !l.trim().is_empty())
+        .map(|l| l.split_whitespace().next().unwrap_or(l).to_string())
+        .collect()
+}
+
+fn run_aur() -> Result<Option<String>> {
+    match Command::new("pacman").arg("-Qm").output() {
+        Ok(out) if out.status.success() => {
+            Ok(Some(String::from_utf8_lossy(&out.stdout).to_string()))
+        }
+        Ok(_) => Ok(None),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(e.into()),
+    }
+}
+
+fn run_pacman() -> Result<Option<String>> {
+    match Command::new("pacman").arg("-Qe").output() {
+        Ok(out) if out.status.success() => {
+            Ok(Some(String::from_utf8_lossy(&out.stdout).to_string()))
+        }
+        Ok(_) => Ok(None),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(e.into()),
+    }
+}
+
+fn run_pip() -> Result<Option<String>> {
+    // Try pip3 first, then pip
+    for cmd in ["pip3", "pip"] {
+        match Command::new(cmd)
+            .args(["list", "--user", "--format=freeze"])
+            .output()
+        {
+            Ok(out) if out.status.success() => {
+                return Ok(Some(String::from_utf8_lossy(&out.stdout).to_string()))
+            }
+            Ok(_) => continue,
+            Err(e) if e.kind() == std::io::ErrorKind::NotFound => continue,
+            Err(e) => return Err(e.into()),
+        }
+    }
+    Ok(None)
+}
+
+fn run_npm() -> Result<Option<String>> {
+    match Command::new("npm")
+        .args(["list", "-g", "--depth=0", "--parseable"])
+        .output()
+    {
+        Ok(out) if out.status.success() => {
+            Ok(Some(String::from_utf8_lossy(&out.stdout).to_string()))
+        }
+        Ok(_) => Ok(None),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(e.into()),
+    }
+}
+
+fn run_cargo() -> Result<Option<String>> {
+    match Command::new("cargo").args(["install", "--list"]).output() {
+        Ok(out) if out.status.success() => {
+            Ok(Some(String::from_utf8_lossy(&out.stdout).to_string()))
+        }
+        Ok(_) => Ok(None),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(e.into()),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // ─── parse_pacman ─────────────────────────────────────────────────────
+
+    #[test]
+    fn pacman_parses_each_line_to_first_field() {
+        let input = "firefox 128.0-1\ncurl 8.7.1-1\nrustup 1.27.1-1\n";
+        assert_eq!(parse_pacman(input), vec!["firefox", "curl", "rustup"]);
+    }
+
+    #[test]
+    fn pacman_skips_blank_lines() {
+        let input = "firefox 1\n\n  \ncurl 2\n";
+        assert_eq!(parse_pacman(input), vec!["firefox", "curl"]);
+    }
+
+    #[test]
+    fn pacman_handles_empty_input() {
+        assert!(parse_pacman("").is_empty());
+        assert!(parse_pacman("\n\n\n").is_empty());
+    }
+
+    #[test]
+    fn pacman_handles_single_token_lines() {
+        // A line with no version still yields the package name.
+        assert_eq!(parse_pacman("firefox\n"), vec!["firefox"]);
+    }
+
+    // ─── parse_pip ────────────────────────────────────────────────────────
+
+    #[test]
+    fn pip_strips_eq_and_ge_specifiers() {
+        let input = "requests==2.32.3\nnumpy==2.0.1\nblack>=24.0\n";
+        assert_eq!(parse_pip(input), vec!["requests", "numpy", "black"]);
+    }
+
+    #[test]
+    fn pip_skips_comments_and_blank_lines() {
+        let input = "# editable install\n\nflake8==1.0\n# trailing\n";
+        assert_eq!(parse_pip(input), vec!["flake8"]);
+    }
+
+    #[test]
+    fn pip_handles_package_without_specifier() {
+        assert_eq!(parse_pip("requests\nblack\n"), vec!["requests", "black"]);
+    }
+
+    // ─── parse_npm ────────────────────────────────────────────────────────
+
+    #[test]
+    fn npm_extracts_basename_from_paths() {
+        let input = "/usr/lib/node_modules/npm\n/usr/lib/node_modules/typescript\n/usr/lib/node_modules/yarn\n";
+        let pkgs = parse_npm(input);
+        assert!(pkgs.contains(&"npm".to_string()));
+        assert!(pkgs.contains(&"typescript".to_string()));
+        assert!(pkgs.contains(&"yarn".to_string()));
+    }
+
+    #[test]
+    fn npm_skips_root_node_modules_entry() {
+        let input = "/usr/lib/node_modules\n/usr/lib/node_modules/typescript\n";
+        assert_eq!(parse_npm(input), vec!["typescript"]);
+    }
+
+    #[test]
+    fn npm_handles_empty_input() {
+        assert!(parse_npm("").is_empty());
+    }
+
+    // ─── parse_cargo ──────────────────────────────────────────────────────
+
+    #[test]
+    fn cargo_extracts_crate_names_from_install_list_output() {
+        let input = "bottom v0.9.6:\n    btm\nripgrep v14.0.3:\n    rg\nbat v0.24.0:\n    bat\n";
+        assert_eq!(parse_cargo(input), vec!["bottom", "ripgrep", "bat"]);
+    }
+
+    #[test]
+    fn cargo_skips_binary_lines() {
+        // Indented lines are binaries inside a crate.
+        let input = "alpha v1.0.0:\n    bin1\n    bin2\nbeta v2.0.0:\n    bin3\n";
+        assert_eq!(parse_cargo(input), vec!["alpha", "beta"]);
+    }
+
+    #[test]
+    fn cargo_handles_empty_input() {
+        assert!(parse_cargo("").is_empty());
+    }
+
+    // ─── snapshot dispatch ────────────────────────────────────────────────
+
+    #[test]
+    fn snapshot_unknown_manager_returns_false_without_writing() {
+        let tmp = tempfile::TempDir::new().unwrap();
+        let dest = tmp.path().join("out.txt");
+        let wrote = snapshot("definitely-not-a-pkg-mgr", &dest).unwrap();
+        assert!(!wrote);
+        assert!(!dest.exists());
+    }
+}

bread-sync/tests/sync.rs

@@ -0,0 +1,482 @@
+use bread_sync::{
+    config::{DelegatesConfig, MachineConfig, PackagesConfig, RemoteConfig, SyncConfig},
+    delegates, machine, packages, SyncRepo,
+};
+use std::fs;
+use tempfile::TempDir;
+
+fn make_bare_repo(path: &std::path::Path) -> git2::Repository {
+    let mut opts = git2::RepositoryInitOptions::new();
+    opts.bare(true);
+    opts.initial_head("main");
+    git2::Repository::init_opts(path, &opts).unwrap()
+}
+
+// Helper to create a git commit in a non-bare repo so we have initial state
+fn init_repo_with_commit(path: &std::path::Path) -> SyncRepo {
+    let repo = SyncRepo::init(path).unwrap();
+    fs::write(path.join(".gitkeep"), "").unwrap();
+    repo.stage_all().unwrap();
+    repo.commit("initial commit").unwrap();
+    repo
+}
+
+#[test]
+fn sync_init_creates_toml_with_required_fields() {
+    let tmp = TempDir::new().unwrap();
+    let config = SyncConfig {
+        remote: RemoteConfig {
+            url: "git@github.com:test/sync.git".to_string(),
+            branch: "main".to_string(),
+        },
+        machine: MachineConfig {
+            name: "testbox".to_string(),
+            tags: vec!["mobile".to_string()],
+        },
+        packages: PackagesConfig::default(),
+        delegates: DelegatesConfig::default(),
+    };
+    config.save(tmp.path()).unwrap();
+
+    let loaded = SyncConfig::load(tmp.path()).unwrap();
+    assert_eq!(loaded.remote.url, "git@github.com:test/sync.git");
+    assert_eq!(loaded.remote.branch, "main");
+    assert_eq!(loaded.machine.name, "testbox");
+    assert_eq!(loaded.machine.tags, vec!["mobile"]);
+}
+
+#[test]
+fn sync_init_errors_if_already_initialized() {
+    let tmp = TempDir::new().unwrap();
+    let config = SyncConfig {
+        remote: RemoteConfig {
+            url: "git@github.com:test/sync.git".to_string(),
+            branch: "main".to_string(),
+        },
+        machine: MachineConfig {
+            name: "box".to_string(),
+            tags: vec![],
+        },
+        packages: PackagesConfig::default(),
+        delegates: DelegatesConfig::default(),
+    };
+    config.save(tmp.path()).unwrap();
+
+    // Second load should succeed (init itself must check for existence externally)
+    // We test that load works
+    let result = SyncConfig::load(tmp.path());
+    assert!(result.is_ok());
+    // sync.toml now exists — the CLI checks this before calling save
+    assert!(tmp.path().join("sync.toml").exists());
+}
+
+#[test]
+fn sync_push_creates_correct_directory_structure() {
+    let repo_tmp = TempDir::new().unwrap();
+    let bare_tmp = TempDir::new().unwrap();
+    let bread_cfg_tmp = TempDir::new().unwrap();
+
+    // Create initial bare remote
+    let _bare = make_bare_repo(bare_tmp.path());
+
+    // Create local bread config
+    fs::write(bread_cfg_tmp.path().join("init.lua"), "-- init\n").unwrap();
+
+    // Init local sync repo
+    let repo = SyncRepo::init(repo_tmp.path()).unwrap();
+    repo.set_remote("origin", bare_tmp.path().to_str().unwrap())
+        .unwrap();
+
+    // Snapshot bread dir
+    let bread_dest = repo_tmp.path().join("bread");
+    delegates::sync_dir(bread_cfg_tmp.path(), &bread_dest, &[]).unwrap();
+
+    // Write machine profile
+    let machines_dir = repo_tmp.path().join("machines");
+    let profile = machine::MachineProfile::new("testbox".to_string(), vec![]);
+    profile.write(&machines_dir).unwrap();
+
+    // Commit and push
+    repo.commit("sync: testbox").unwrap();
+    repo.push("origin", "main").unwrap();
+
+    // Verify structure in local repo
+    assert!(repo_tmp.path().join("bread").exists());
+    assert!(repo_tmp.path().join("bread").join("init.lua").exists());
+    assert!(repo_tmp
+        .path()
+        .join("machines")
+        .join("testbox.toml")
+        .exists());
+}
+
+#[test]
+fn sync_push_snapshots_bread_config() {
+    let repo_tmp = TempDir::new().unwrap();
+    let bare_tmp = TempDir::new().unwrap();
+    let bread_cfg_tmp = TempDir::new().unwrap();
+
+    make_bare_repo(bare_tmp.path());
+
+    // Create a more complex bread config
+    fs::create_dir_all(bread_cfg_tmp.path().join("modules/mymod")).unwrap();
+    fs::write(bread_cfg_tmp.path().join("init.lua"), "-- init").unwrap();
+    fs::write(
+        bread_cfg_tmp.path().join("modules/mymod/init.lua"),
+        "-- mymod",
+    )
+    .unwrap();
+
+    let repo = SyncRepo::init(repo_tmp.path()).unwrap();
+    repo.set_remote("origin", bare_tmp.path().to_str().unwrap())
+        .unwrap();
+
+    let bread_dest = repo_tmp.path().join("bread");
+    delegates::sync_dir(bread_cfg_tmp.path(), &bread_dest, &[]).unwrap();
+
+    repo.commit("sync: testbox").unwrap();
+    repo.push("origin", "main").unwrap();
+
+    // Verify files were copied
+    assert!(bread_dest.join("init.lua").exists());
+    assert!(bread_dest.join("modules/mymod/init.lua").exists());
+
+    let content = fs::read_to_string(bread_dest.join("init.lua")).unwrap();
+    assert_eq!(content, "-- init");
+}
+
+#[test]
+fn sync_pull_copies_files_from_repo() {
+    let bare_tmp = TempDir::new().unwrap();
+    let local_tmp = TempDir::new().unwrap();
+    let apply_tmp = TempDir::new().unwrap();
+
+    make_bare_repo(bare_tmp.path());
+
+    // Create a local repo, add some files, push to bare
+    let repo = SyncRepo::init(local_tmp.path()).unwrap();
+    repo.set_remote("origin", bare_tmp.path().to_str().unwrap())
+        .unwrap();
+
+    let bread_dest = local_tmp.path().join("bread");
+    fs::create_dir_all(&bread_dest).unwrap();
+    fs::write(bread_dest.join("init.lua"), "-- from sync").unwrap();
+
+    repo.commit("sync: first push").unwrap();
+    repo.push("origin", "main").unwrap();
+
+    // Now clone the bare repo and pull
+    let clone_tmp = TempDir::new().unwrap();
+    let _cloned =
+        SyncRepo::clone_from(bare_tmp.path().to_str().unwrap(), clone_tmp.path()).unwrap();
+
+    // Apply bread/ to apply_tmp
+    let src = clone_tmp.path().join("bread");
+    if src.exists() {
+        delegates::sync_dir(&src, apply_tmp.path(), &[]).unwrap();
+    }
+
+    assert!(apply_tmp.path().join("init.lua").exists());
+    let content = fs::read_to_string(apply_tmp.path().join("init.lua")).unwrap();
+    assert_eq!(content, "-- from sync");
+}
+
+#[test]
+fn package_manifest_pacman_parses_output_correctly() {
+    let input = "firefox 128.0-1\ncurl 8.7.1-1\nrustup 1.27.1-1\n";
+    let pkgs = packages::parse_pacman(input);
+    assert_eq!(pkgs, vec!["firefox", "curl", "rustup"]);
+}
+
+#[test]
+fn package_manifest_pip_parses_output_correctly() {
+    let input = "requests==2.32.3\nnumpy==2.0.1\nblack>=24.0\n";
+    let pkgs = packages::parse_pip(input);
+    assert_eq!(pkgs, vec!["requests", "numpy", "black"]);
+}
+
+#[test]
+fn delegates_exclude_globs_filter_correctly() {
+    let src_tmp = TempDir::new().unwrap();
+    let dst_tmp = TempDir::new().unwrap();
+
+    // Create files that should and shouldn't be copied
+    fs::create_dir_all(src_tmp.path().join(".git/objects")).unwrap();
+    fs::write(src_tmp.path().join(".git/objects/abc"), "").unwrap();
+    fs::create_dir_all(src_tmp.path().join("lua")).unwrap();
+    fs::write(src_tmp.path().join("lua/init.lua"), "-- ok").unwrap();
+    fs::write(src_tmp.path().join("log.cache"), "cached").unwrap();
+
+    let excludes = vec!["**/.git".to_string(), "**/*.cache".to_string()];
+    delegates::sync_dir(src_tmp.path(), dst_tmp.path(), &excludes).unwrap();
+
+    assert!(dst_tmp.path().join("lua/init.lua").exists());
+    assert!(!dst_tmp.path().join(".git").exists());
+    assert!(!dst_tmp.path().join("log.cache").exists());
+}
+
+#[test]
+fn machine_profile_written_with_correct_fields() {
+    let machines_tmp = TempDir::new().unwrap();
+    let profile = machine::MachineProfile::new(
+        "myhost".to_string(),
+        vec!["mobile".to_string(), "battery".to_string()],
+    );
+    profile.write(machines_tmp.path()).unwrap();
+
+    let loaded = machine::MachineProfile::read(machines_tmp.path(), "myhost").unwrap();
+    assert_eq!(loaded.name, "myhost");
+    assert_eq!(loaded.tags, vec!["mobile", "battery"]);
+    assert!(!loaded.hostname.is_empty());
+    // last_sync must be valid RFC 3339
+    let parsed = chrono::DateTime::parse_from_rfc3339(&loaded.last_sync);
+    assert!(
+        parsed.is_ok(),
+        "last_sync '{}' is not valid RFC 3339",
+        loaded.last_sync
+    );
+}
+
+#[test]
+fn status_shows_no_changes_when_clean() {
+    let repo_tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(repo_tmp.path());
+    let changes = repo.local_changes().unwrap();
+    assert!(
+        changes.is_empty(),
+        "expected no local changes, got: {:?}",
+        changes
+    );
+    assert!(repo.is_clean().unwrap());
+}
+
+#[test]
+fn push_with_no_changes_returns_none() {
+    let repo_tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(repo_tmp.path());
+
+    // No new changes — commit should return None
+    let result = repo.commit("second commit").unwrap();
+    assert!(
+        result.is_none(),
+        "expected None (nothing to commit), got: {:?}",
+        result
+    );
+}
+
+// ─── git.rs additional coverage ────────────────────────────────────────────
+
+#[test]
+fn init_creates_repo_with_main_branch() {
+    let tmp = TempDir::new().unwrap();
+    let repo = SyncRepo::init(tmp.path()).unwrap();
+    fs::write(tmp.path().join("x"), "").unwrap();
+    repo.stage_all().unwrap();
+    let oid = repo.commit("initial").unwrap();
+    assert!(oid.is_some(), "first commit should succeed");
+
+    // Verify HEAD is on refs/heads/main.
+    let head_ref = std::process::Command::new("git")
+        .args(["-C", tmp.path().to_str().unwrap(), "symbolic-ref", "HEAD"])
+        .output()
+        .unwrap();
+    let head_name = String::from_utf8_lossy(&head_ref.stdout);
+    assert!(
+        head_name.trim() == "refs/heads/main",
+        "expected refs/heads/main, got {head_name}"
+    );
+}
+
+#[test]
+fn open_or_clone_opens_existing_repo() {
+    let tmp = TempDir::new().unwrap();
+    SyncRepo::init(tmp.path()).unwrap();
+
+    // Calling open_or_clone on an existing path must not attempt to clone.
+    let again = SyncRepo::open_or_clone("/nonexistent-url-that-would-fail", tmp.path());
+    assert!(again.is_ok());
+}
+
+#[test]
+fn open_or_clone_clones_into_missing_path() {
+    let bare = TempDir::new().unwrap();
+    let bare_repo = make_bare_repo(bare.path());
+    // Seed the bare repo with at least one commit so a clone is meaningful.
+    let local = TempDir::new().unwrap();
+    let repo = SyncRepo::init(local.path()).unwrap();
+    fs::write(local.path().join("seed"), "x").unwrap();
+    repo.commit("seed").unwrap();
+    repo.set_remote("origin", bare.path().to_str().unwrap())
+        .unwrap();
+    repo.push("origin", "main").unwrap();
+    drop(bare_repo);
+
+    let dest_parent = TempDir::new().unwrap();
+    let dest = dest_parent.path().join("clone-target");
+    let cloned = SyncRepo::open_or_clone(bare.path().to_str().unwrap(), &dest).unwrap();
+    assert_eq!(cloned.path, dest);
+    assert!(dest.join("seed").exists());
+}
+
+#[test]
+fn local_changes_reports_new_modified_and_deleted() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+
+    fs::write(tmp.path().join("added.txt"), "new").unwrap();
+    fs::write(tmp.path().join(".gitkeep"), "modified").unwrap();
+
+    let changes = repo.local_changes().unwrap();
+    assert!(!changes.is_empty());
+    let kinds: Vec<char> = changes.iter().map(|(c, _)| *c).collect();
+    assert!(kinds.contains(&'A'));
+    assert!(kinds.contains(&'M'));
+}
+
+#[test]
+fn is_clean_after_commit() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+    assert!(repo.is_clean().unwrap());
+}
+
+#[test]
+fn working_diff_includes_modified_tracked_content() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+    // Modify an already-tracked file so it appears in `git diff HEAD`.
+    fs::write(tmp.path().join(".gitkeep"), "tracked change\n").unwrap();
+
+    let diff = repo.working_diff().unwrap();
+    assert!(
+        diff.contains("tracked change"),
+        "diff did not include tracked change, diff was: {diff:?}"
+    );
+}
+
+#[test]
+fn working_diff_empty_when_only_untracked_files() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+    fs::write(tmp.path().join("new-untracked.txt"), "hi").unwrap();
+
+    // working_diff uses diff_tree_to_workdir_with_index without INCLUDE_UNTRACKED,
+    // so untracked files don't appear — local_changes is the right tool for that.
+    let diff = repo.working_diff().unwrap();
+    assert!(
+        diff.is_empty() || !diff.contains("new-untracked"),
+        "expected untracked file to be excluded, diff was: {diff:?}"
+    );
+}
+
+#[test]
+fn set_remote_overwrites_existing_remote() {
+    let tmp = TempDir::new().unwrap();
+    let repo = SyncRepo::init(tmp.path()).unwrap();
+    repo.set_remote("origin", "https://example.com/a.git")
+        .unwrap();
+    // A second call must not error out — it should replace the previous URL.
+    repo.set_remote("origin", "https://example.com/b.git")
+        .unwrap();
+}
+
+#[test]
+fn last_commit_time_returns_none_for_empty_repo() {
+    let tmp = TempDir::new().unwrap();
+    let repo = SyncRepo::init(tmp.path()).unwrap();
+    assert!(repo.last_commit_time().is_none());
+}
+
+#[test]
+fn last_commit_time_present_after_commit() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+    assert!(repo.last_commit_time().is_some());
+}
+
+#[test]
+fn push_pull_round_trip_through_bare_remote() {
+    let bare = TempDir::new().unwrap();
+    make_bare_repo(bare.path());
+
+    // Push from author repo.
+    let author = TempDir::new().unwrap();
+    let r1 = SyncRepo::init(author.path()).unwrap();
+    r1.set_remote("origin", bare.path().to_str().unwrap())
+        .unwrap();
+    fs::write(author.path().join("note.txt"), "v1").unwrap();
+    r1.commit("v1").unwrap();
+    r1.push("origin", "main").unwrap();
+
+    // Clone into reader repo and confirm contents.
+    let reader_tmp = TempDir::new().unwrap();
+    let r2 = SyncRepo::clone_from(bare.path().to_str().unwrap(), reader_tmp.path()).unwrap();
+    assert_eq!(
+        fs::read_to_string(reader_tmp.path().join("note.txt")).unwrap(),
+        "v1"
+    );
+
+    // Author writes a second version and pushes.
+    fs::write(author.path().join("note.txt"), "v2").unwrap();
+    r1.commit("v2").unwrap();
+    r1.push("origin", "main").unwrap();
+
+    // Reader pulls and sees the new content.
+    r2.pull("origin", "main").unwrap();
+    assert_eq!(
+        fs::read_to_string(reader_tmp.path().join("note.txt")).unwrap(),
+        "v2"
+    );
+}
+
+#[test]
+fn pull_with_no_remote_changes_is_noop() {
+    let bare = TempDir::new().unwrap();
+    make_bare_repo(bare.path());
+
+    let local = TempDir::new().unwrap();
+    let repo = SyncRepo::init(local.path()).unwrap();
+    repo.set_remote("origin", bare.path().to_str().unwrap())
+        .unwrap();
+    fs::write(local.path().join("a"), "1").unwrap();
+    repo.commit("c1").unwrap();
+    repo.push("origin", "main").unwrap();
+
+    // Calling pull immediately after push must be up-to-date and succeed.
+    repo.pull("origin", "main").unwrap();
+    assert!(repo.is_clean().unwrap());
+}
+
+#[test]
+fn remote_changes_returns_empty_when_remote_unknown() {
+    let tmp = TempDir::new().unwrap();
+    let repo = init_repo_with_commit(tmp.path());
+    let changes = repo.remote_changes("origin", "main").unwrap();
+    assert!(changes.is_empty());
+}
+
+// ─── machine list ──────────────────────────────────────────────────────────
+
+#[test]
+fn machine_list_returns_all_profiles_sorted() {
+    let machines_tmp = TempDir::new().unwrap();
+    for name in ["delta", "alpha", "charlie", "bravo"] {
+        machine::MachineProfile::new(name.to_string(), vec![])
+            .write(machines_tmp.path())
+            .unwrap();
+    }
+    let list = machine::MachineProfile::list(machines_tmp.path()).unwrap();
+    let names: Vec<&str> = list.iter().map(|m| m.name.as_str()).collect();
+    assert_eq!(names, vec!["alpha", "bravo", "charlie", "delta"]);
+}
+
+// ─── packages snapshot ─────────────────────────────────────────────────────
+
+#[test]
+fn snapshot_writes_destination_when_manager_unknown_is_skipped() {
+    let dest_tmp = TempDir::new().unwrap();
+    let dest = dest_tmp.path().join("nested/dir/file.txt");
+    let wrote = packages::snapshot("does-not-exist", &dest).unwrap();
+    assert!(!wrote);
+    assert!(!dest.exists());
+}

breadd/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "breadd"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+bread-shared = { path = "../bread-shared" }
+bread-sync = { path = "../bread-sync" }
+serde.workspace = true
+serde_json.workspace = true
+tokio.workspace = true
+anyhow.workspace = true
+tracing.workspace = true
+tracing-subscriber.workspace = true
+mlua = { version = "0.9", features = ["lua54", "vendored", "async", "serialize"] }
+async-trait = "0.1"
+toml = "0.8"
+udev = { version = "0.9", features = ["send"] }
+rtnetlink = "0.9"
+zbus = { version = "3.13", features = ["tokio"] }
+futures-util = "0.3"
+netlink-packet-route = "0.11"
+netlink-packet-core = "0.4"
+libc = "0.2"
+
+[dev-dependencies]
+tempfile = "3.13"

breadd/src/adapters/bluetooth.rs

@@ -0,0 +1,255 @@
+use anyhow::{anyhow, Result};
+use async_trait::async_trait;
+use bread_shared::{now_unix_ms, AdapterSource, RawEvent};
+use futures_util::StreamExt;
+use serde_json::json;
+use std::collections::HashMap;
+use tokio::sync::mpsc;
+use tracing::{debug, info};
+use zbus::zvariant::{OwnedObjectPath, OwnedValue};
+use zbus::{Message, MessageStream};
+
+use super::Adapter;
+
+#[derive(Clone, Debug)]
+pub struct BluetoothAdapter;
+
+impl BluetoothAdapter {
+    pub fn new() -> Self {
+        Self
+    }
+
+    /// Emit `bluetooth.enumerate` events for every device that is currently connected.
+    /// Errors are swallowed — Bluetooth hardware being absent is not a daemon startup failure.
+    pub async fn enumerate_existing(&self, tx: &mpsc::Sender<RawEvent>) {
+        match try_enumerate(tx).await {
+            Ok(n) => debug!("bluetooth enumerated {n} connected device(s)"),
+            Err(e) => debug!("bluetooth enumeration skipped: {e}"),
+        }
+    }
+}
+
+#[async_trait]
+impl Adapter for BluetoothAdapter {
+    fn name(&self) -> &'static str {
+        "bluetooth"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        info!("bluetooth adapter starting");
+
+        let conn = zbus::Connection::system()
+            .await
+            .map_err(|e| anyhow!("bluetooth D-Bus unavailable: {e}"))?;
+
+        let mut stream = MessageStream::from(&conn);
+        while let Some(result) = stream.next().await {
+            match result {
+                Ok(message) => {
+                    if let Some(event) = parse_bluetooth_message(&message) {
+                        if tx.send(event).await.is_err() {
+                            return Ok(());
+                        }
+                    }
+                }
+                Err(e) => debug!("bluetooth stream error: {e}"),
+            }
+        }
+
+        Ok(())
+    }
+}
+
+async fn try_enumerate(tx: &mpsc::Sender<RawEvent>) -> Result<usize> {
+    let conn = zbus::Connection::system().await?;
+    let msg = conn
+        .call_method(
+            Some("org.bluez"),
+            "/",
+            Some("org.freedesktop.DBus.ObjectManager"),
+            "GetManagedObjects",
+            &(),
+        )
+        .await?;
+
+    let objects: HashMap<OwnedObjectPath, HashMap<String, HashMap<String, OwnedValue>>> =
+        msg.body()?;
+
+    let mut count = 0;
+    for (path, interfaces) in objects {
+        let Some(props) = interfaces.get("org.bluez.Device1") else {
+            continue;
+        };
+        let props_json = serde_json::to_value(props).unwrap_or_else(|_| json!({}));
+        if !props_json
+            .get("Connected")
+            .and_then(|v| v.as_bool())
+            .unwrap_or(false)
+        {
+            continue;
+        }
+
+        let name = props_json
+            .get("Name")
+            .or_else(|| props_json.get("Alias"))
+            .and_then(|v| v.as_str())
+            .unwrap_or("unknown")
+            .to_string();
+        let address = props_json
+            .get("Address")
+            .and_then(|v| v.as_str())
+            .unwrap_or("unknown")
+            .to_string();
+
+        let _ = tx
+            .send(RawEvent {
+                source: AdapterSource::Bluetooth,
+                kind: "bluetooth.enumerate".to_string(),
+                payload: json!({
+                    "path": path.as_str(),
+                    "address": address,
+                    "name": name,
+                    "properties": props_json,
+                }),
+                timestamp: now_unix_ms(),
+            })
+            .await;
+        count += 1;
+    }
+
+    Ok(count)
+}
+
+fn parse_bluetooth_message(message: &Message) -> Option<RawEvent> {
+    let header = message.header().ok()?;
+    let interface = header.interface().ok()??.as_str().to_string();
+    let member = header.member().ok()??.as_str().to_string();
+    let path = header
+        .path()
+        .ok()
+        .flatten()
+        .map(|p| p.as_str().to_string())
+        .unwrap_or_default();
+
+    // Connected / disconnected — PropertiesChanged on a BlueZ device object
+    if interface == "org.freedesktop.DBus.Properties" && member == "PropertiesChanged" {
+        if !path.starts_with("/org/bluez/") {
+            return None;
+        }
+        let (iface, changed, _): (String, HashMap<String, OwnedValue>, Vec<String>) =
+            message.body().ok()?;
+        if iface != "org.bluez.Device1" {
+            return None;
+        }
+        let changed_json = serde_json::to_value(&changed).ok()?;
+        let connected = changed_json.get("Connected").and_then(|v| v.as_bool())?;
+        let address = address_from_path(&path);
+        let kind = if connected {
+            "bluetooth.device.connected"
+        } else {
+            "bluetooth.device.disconnected"
+        };
+        return Some(RawEvent {
+            source: AdapterSource::Bluetooth,
+            kind: kind.to_string(),
+            payload: json!({
+                "path": path,
+                "address": address,
+                "properties": changed_json,
+            }),
+            timestamp: now_unix_ms(),
+        });
+    }
+
+    // Device paired / discovered — InterfacesAdded from BlueZ ObjectManager
+    if interface == "org.freedesktop.DBus.ObjectManager" && member == "InterfacesAdded" {
+        let (obj_path, interfaces): (
+            OwnedObjectPath,
+            HashMap<String, HashMap<String, OwnedValue>>,
+        ) = message.body().ok()?;
+        let obj_str = obj_path.as_str();
+        if !obj_str.starts_with("/org/bluez/") {
+            return None;
+        }
+        let props = interfaces.get("org.bluez.Device1")?;
+        let props_json = serde_json::to_value(props).ok()?;
+        let name = props_json
+            .get("Name")
+            .or_else(|| props_json.get("Alias"))
+            .and_then(|v| v.as_str())
+            .unwrap_or("unknown")
+            .to_string();
+        let address = props_json
+            .get("Address")
+            .and_then(|v| v.as_str())
+            .map(|s| s.to_string())
+            .unwrap_or_else(|| address_from_path(obj_str));
+        return Some(RawEvent {
+            source: AdapterSource::Bluetooth,
+            kind: "bluetooth.device.added".to_string(),
+            payload: json!({
+                "path": obj_str,
+                "address": address,
+                "name": name,
+                "properties": props_json,
+            }),
+            timestamp: now_unix_ms(),
+        });
+    }
+
+    // Device unpaired — InterfacesRemoved from BlueZ ObjectManager
+    if interface == "org.freedesktop.DBus.ObjectManager" && member == "InterfacesRemoved" {
+        let (obj_path, interfaces): (OwnedObjectPath, Vec<String>) = message.body().ok()?;
+        let obj_str = obj_path.as_str();
+        if !obj_str.starts_with("/org/bluez/") {
+            return None;
+        }
+        if !interfaces.iter().any(|i| i == "org.bluez.Device1") {
+            return None;
+        }
+        let address = address_from_path(obj_str);
+        return Some(RawEvent {
+            source: AdapterSource::Bluetooth,
+            kind: "bluetooth.device.removed".to_string(),
+            payload: json!({
+                "path": obj_str,
+                "address": address,
+            }),
+            timestamp: now_unix_ms(),
+        });
+    }
+
+    None
+}
+
+/// `/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF` → `"AA:BB:CC:DD:EE:FF"`
+fn address_from_path(path: &str) -> String {
+    path.rsplit('/')
+        .next()
+        .and_then(|s| s.strip_prefix("dev_"))
+        .map(|s| s.replace('_', ":"))
+        .unwrap_or_default()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn address_from_path_parses_standard_bluez_path() {
+        assert_eq!(
+            address_from_path("/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF"),
+            "AA:BB:CC:DD:EE:FF"
+        );
+    }
+
+    #[test]
+    fn address_from_path_returns_empty_for_adapter_path() {
+        assert_eq!(address_from_path("/org/bluez/hci0"), "");
+    }
+
+    #[test]
+    fn address_from_path_returns_empty_for_root() {
+        assert_eq!(address_from_path("/"), "");
+    }
+}

breadd/src/adapters/hyprland.rs

@@ -0,0 +1,92 @@
+use std::env;
+use std::path::PathBuf;
+
+use anyhow::{anyhow, Result};
+use bread_shared::{now_unix_ms, AdapterSource, RawEvent};
+use serde_json::json;
+use tokio::io::{AsyncBufReadExt, BufReader};
+use tokio::net::UnixStream;
+use tokio::sync::mpsc;
+use tracing::{debug, warn};
+
+use crate::adapters::Adapter;
+
+#[derive(Clone, Default)]
+pub struct HyprlandAdapter;
+
+#[async_trait::async_trait]
+impl Adapter for HyprlandAdapter {
+    fn name(&self) -> &'static str {
+        "hyprland"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        debug!("hyprland adapter started");
+        let socket = hyprland_event_socket()?;
+        let stream = UnixStream::connect(&socket).await?;
+        let reader = BufReader::new(stream);
+        let mut lines = reader.lines();
+
+        while let Some(line) = lines.next_line().await? {
+            let (kind, data) = parse_hyprland_line(&line);
+            tx.send(RawEvent {
+                source: AdapterSource::Hyprland,
+                kind: "hyprland.event".to_string(),
+                payload: json!({
+                    "kind": kind,
+                    "raw": line,
+                    "data": data,
+                }),
+                timestamp: now_unix_ms(),
+            })
+            .await?;
+        }
+
+        warn!("hyprland socket closed");
+        Err(anyhow!("hyprland socket closed"))
+    }
+}
+
+fn hyprland_event_socket() -> Result<PathBuf> {
+    let runtime = env::var("XDG_RUNTIME_DIR").unwrap_or_else(|_| "/tmp".to_string());
+
+    // If the env var is set, use it directly.
+    if let Ok(instance) = env::var("HYPRLAND_INSTANCE_SIGNATURE") {
+        return Ok(PathBuf::from(runtime)
+            .join("hypr")
+            .join(instance)
+            .join(".socket2.sock"));
+    }
+
+    // Otherwise scan $XDG_RUNTIME_DIR/hypr/ for a running instance.
+    // Hyprland creates a per-instance directory there containing .socket2.sock.
+    // This handles the case where breadd starts as a systemd user service before
+    // Hyprland has exported HYPRLAND_INSTANCE_SIGNATURE into the environment.
+    let hypr_dir = PathBuf::from(&runtime).join("hypr");
+    let mut sockets: Vec<PathBuf> = std::fs::read_dir(&hypr_dir)
+        .map_err(|_| anyhow!("no Hyprland instance found ({})", hypr_dir.display()))?
+        .flatten()
+        .map(|e| e.path().join(".socket2.sock"))
+        .filter(|p| p.exists())
+        .collect();
+
+    match sockets.len() {
+        0 => Err(anyhow!(
+            "no Hyprland instance found in {}",
+            hypr_dir.display()
+        )),
+        1 => Ok(sockets.remove(0)),
+        n => {
+            warn!("found {n} Hyprland instances, using first");
+            Ok(sockets.remove(0))
+        }
+    }
+}
+
+fn parse_hyprland_line(line: &str) -> (String, String) {
+    if let Some((kind, data)) = line.split_once(">>") {
+        return (kind.to_string(), data.to_string());
+    }
+
+    ("unknown".to_string(), line.to_string())
+}

breadd/src/adapters/mod.rs

@@ -0,0 +1,142 @@
+use anyhow::Result;
+use async_trait::async_trait;
+use bread_shared::RawEvent;
+use serde::Serialize;
+use std::collections::HashMap;
+use std::sync::Arc;
+use tokio::sync::{mpsc, watch, RwLock};
+use tracing::info;
+
+use crate::core::config::Config;
+use crate::core::supervisor::spawn_supervised;
+
+pub mod bluetooth;
+pub mod hyprland;
+pub mod network;
+pub mod network_rtnetlink;
+pub mod power;
+pub mod power_upower;
+pub mod udev;
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum AdapterStatus {
+    Connected,
+    Disconnected,
+}
+
+#[async_trait]
+pub trait Adapter: Send + Sync {
+    fn name(&self) -> &'static str;
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()>;
+    async fn on_connect(&self) -> Result<()> {
+        Ok(())
+    }
+    async fn on_disconnect(&self) -> Result<()> {
+        Ok(())
+    }
+}
+
+pub struct Manager {
+    raw_tx: mpsc::Sender<RawEvent>,
+    config: Config,
+    shutdown_rx: watch::Receiver<bool>,
+    status: Arc<RwLock<HashMap<String, AdapterStatus>>>,
+}
+
+impl Manager {
+    pub fn new(
+        raw_tx: mpsc::Sender<RawEvent>,
+        config: Config,
+        shutdown_rx: watch::Receiver<bool>,
+    ) -> Self {
+        Self {
+            raw_tx,
+            config,
+            shutdown_rx,
+            status: Arc::new(RwLock::new(HashMap::new())),
+        }
+    }
+
+    pub fn status_handle(&self) -> Arc<RwLock<HashMap<String, AdapterStatus>>> {
+        self.status.clone()
+    }
+
+    pub async fn start_all(&self) -> Result<()> {
+        info!("starting adapters");
+
+        if self.config.adapters.udev.enabled {
+            let adapter = udev::UdevAdapter::new(self.config.adapters.udev.subsystems.clone());
+            adapter.enumerate_existing(&self.raw_tx).await?;
+            self.spawn_adapter(adapter);
+        }
+
+        if self.config.adapters.hyprland.enabled {
+            self.spawn_adapter(hyprland::HyprlandAdapter);
+        }
+
+        if self.config.adapters.power.enabled {
+            // Prefer UPower DBus adapter; fall back to sysfs poller
+            let upower = power_upower::UPowerAdapter::new();
+            if let Ok(adapter) = upower {
+                self.spawn_adapter(adapter);
+            } else {
+                self.spawn_adapter(power::PowerAdapter::new(
+                    self.config.adapters.power.poll_interval_secs,
+                ));
+            }
+        }
+
+        if self.config.adapters.bluetooth.enabled {
+            let adapter = bluetooth::BluetoothAdapter::new();
+            adapter.enumerate_existing(&self.raw_tx).await;
+            self.spawn_adapter(adapter);
+        }
+
+        if self.config.adapters.network.enabled {
+            // Prefer rtnetlink-based adapter; fall back to existing sysfs-based adapter
+            let rt = network_rtnetlink::RtnetlinkAdapter::new();
+            if let Ok(adapter) = rt {
+                self.spawn_adapter(adapter);
+            } else {
+                self.spawn_adapter(network::NetworkAdapter);
+            }
+        }
+
+        Ok(())
+    }
+
+    fn spawn_adapter<A>(&self, adapter: A)
+    where
+        A: Adapter + Clone + 'static,
+    {
+        let name = adapter.name();
+        let tx = self.raw_tx.clone();
+        let shutdown_rx = self.shutdown_rx.clone();
+        let shutdown_for_task = shutdown_rx.clone();
+        let status = self.status.clone();
+        spawn_supervised(name, shutdown_rx, move || {
+            let adapter = adapter.clone();
+            let tx = tx.clone();
+            let mut shutdown_rx = shutdown_for_task.clone();
+            let status = status.clone();
+            async move {
+                adapter.on_connect().await?;
+                {
+                    let mut guard = status.write().await;
+                    guard.insert(adapter.name().to_string(), AdapterStatus::Connected);
+                }
+                let result = tokio::select! {
+                    result = adapter.run(tx) => result,
+                    _ = shutdown_rx.changed() => Ok(()),
+                };
+                adapter.on_disconnect().await?;
+                {
+                    let mut guard = status.write().await;
+                    guard.insert(adapter.name().to_string(), AdapterStatus::Disconnected);
+                }
+                result
+            }
+        });
+    }
+}

breadd/src/adapters/network.rs

@@ -0,0 +1,93 @@
+use std::collections::BTreeMap;
+use std::fs;
+
+use anyhow::Result;
+use bread_shared::{now_unix_ms, AdapterSource, RawEvent};
+use serde_json::json;
+use tokio::sync::mpsc;
+use tokio::time::{sleep, Duration};
+use tracing::debug;
+
+use crate::adapters::Adapter;
+
+#[derive(Clone, Default)]
+pub struct NetworkAdapter;
+
+#[async_trait::async_trait]
+impl Adapter for NetworkAdapter {
+    fn name(&self) -> &'static str {
+        "network"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        debug!("network adapter started");
+        let mut last = read_network_state();
+        tx.send(network_raw_event(&last)).await?;
+
+        loop {
+            sleep(Duration::from_secs(5)).await;
+            let now = read_network_state();
+            if now != last {
+                tx.send(network_raw_event(&now)).await?;
+                last = now;
+            }
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq)]
+struct NetworkSnapshot {
+    interfaces: BTreeMap<String, bool>,
+    online: bool,
+}
+
+fn network_raw_event(snapshot: &NetworkSnapshot) -> RawEvent {
+    let interfaces = snapshot
+        .interfaces
+        .iter()
+        .map(|(name, up)| (name.clone(), json!({ "up": up })))
+        .collect::<serde_json::Map<String, serde_json::Value>>();
+
+    RawEvent {
+        source: AdapterSource::Network,
+        kind: "network.snapshot".to_string(),
+        payload: json!({
+            "online": snapshot.online,
+            "interfaces": interfaces,
+        }),
+        timestamp: now_unix_ms(),
+    }
+}
+
+fn read_network_state() -> NetworkSnapshot {
+    let mut interfaces = BTreeMap::new();
+
+    if let Ok(entries) = fs::read_dir("/sys/class/net") {
+        for entry in entries.flatten() {
+            let name = entry.file_name().to_string_lossy().to_string();
+            if name == "lo" {
+                continue;
+            }
+            let oper = fs::read_to_string(entry.path().join("operstate")).unwrap_or_default();
+            let up = oper.trim() == "up";
+            interfaces.insert(name, up);
+        }
+    }
+
+    let online = has_default_route();
+
+    NetworkSnapshot { interfaces, online }
+}
+
+fn has_default_route() -> bool {
+    if let Ok(routes) = fs::read_to_string("/proc/net/route") {
+        for line in routes.lines().skip(1) {
+            let cols: Vec<&str> = line.split_whitespace().collect();
+            if cols.len() > 2 && cols[1] == "00000000" {
+                return true;
+            }
+        }
+    }
+
+    false
+}

breadd/src/adapters/network_rtnetlink.rs

@@ -0,0 +1,195 @@
+use anyhow::{anyhow, Result};
+use async_trait::async_trait;
+use bread_shared::{AdapterSource, RawEvent};
+use futures_util::StreamExt;
+use netlink_packet_route::RtnlMessage;
+use rtnetlink::new_connection;
+use serde_json::json;
+use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
+use tokio::sync::mpsc;
+use tracing::{debug, info};
+
+use super::Adapter;
+
+#[derive(Clone, Debug)]
+pub struct RtnetlinkAdapter;
+
+impl RtnetlinkAdapter {
+    pub fn new() -> Result<Self> {
+        // Try to create a connection to validate presence of rtnetlink
+        let conn = new_connection();
+        match conn {
+            Ok((connection, _handle, _messages)) => {
+                // Spawn and immediately drop the connection task; we just validated
+                tokio::spawn(connection);
+                Ok(Self)
+            }
+            Err(e) => Err(anyhow!(e)),
+        }
+    }
+}
+
+#[async_trait]
+impl Adapter for RtnetlinkAdapter {
+    fn name(&self) -> &'static str {
+        "rtnetlink-network"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        info!("rtnetlink adapter starting");
+        let (connection, _handle, mut messages) = new_connection()?;
+        tokio::spawn(connection);
+
+        while let Some((message, _addr)) = messages.next().await {
+            match message.payload {
+                netlink_packet_core::NetlinkPayload::InnerMessage(RtnlMessage::NewLink(link)) => {
+                    let ifname = link.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::link::nlas::Nla::IfName(name) => Some(name.clone()),
+                        _ => None,
+                    });
+                    let mtu = link.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::link::nlas::Nla::Mtu(mtu) => Some(*mtu),
+                        _ => None,
+                    });
+                    let netns_id = link.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::link::nlas::Nla::NetnsId(id) => Some(*id),
+                        _ => None,
+                    });
+                    let netns_fd = link.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::link::nlas::Nla::NetNsFd(fd) => Some(*fd),
+                        _ => None,
+                    });
+
+                    let up = link.header.flags & (libc::IFF_UP as u32) != 0;
+                    if let Some(name) = ifname {
+                        let kind = if up { "link.up" } else { "link.down" };
+                        let payload = json!({
+                            "ifname": name,
+                            "index": link.header.index,
+                            "mtu": mtu,
+                            "netns_id": netns_id,
+                            "netns_fd": netns_fd
+                        });
+                        let _ = tx
+                            .send(RawEvent {
+                                source: AdapterSource::Network,
+                                kind: kind.to_string(),
+                                payload,
+                                timestamp: bread_shared::now_unix_ms(),
+                            })
+                            .await;
+                    }
+                }
+                netlink_packet_core::NetlinkPayload::InnerMessage(RtnlMessage::NewRoute(route)) => {
+                    // Heuristic: if destination is default (empty), treat as default-route change
+                    let is_default = route.header.destination_prefix_length == 0;
+                    if is_default {
+                        let gateway = route.nlas.iter().find_map(|nla| match nla {
+                            netlink_packet_route::route::nlas::Nla::Gateway(gw) => Some(gw.clone()),
+                            _ => None,
+                        });
+                        let gateway_ip = gateway.as_deref().and_then(ip_from_bytes);
+                        let payload = json!({
+                            "gateway": gateway_ip,
+                            "table": route.header.table
+                        });
+                        let _ = tx
+                            .send(RawEvent {
+                                source: AdapterSource::Network,
+                                kind: "route.default.changed".to_string(),
+                                payload,
+                                timestamp: bread_shared::now_unix_ms(),
+                            })
+                            .await;
+                    }
+                }
+                netlink_packet_core::NetlinkPayload::InnerMessage(RtnlMessage::NewAddress(
+                    addr,
+                )) => {
+                    let address = addr.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::address::nlas::Nla::Address(bytes) => {
+                            Some(bytes.clone())
+                        }
+                        netlink_packet_route::address::nlas::Nla::Local(bytes) => {
+                            Some(bytes.clone())
+                        }
+                        _ => None,
+                    });
+                    let label = addr.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::address::nlas::Nla::Label(label) => {
+                            Some(label.clone())
+                        }
+                        _ => None,
+                    });
+                    let ip = address.as_deref().and_then(ip_from_bytes);
+                    let payload = json!({
+                        "ifindex": addr.header.index,
+                        "prefix_len": addr.header.prefix_len,
+                        "family": addr.header.family,
+                        "address": ip,
+                        "label": label
+                    });
+                    let _ = tx
+                        .send(RawEvent {
+                            source: AdapterSource::Network,
+                            kind: "address.added".to_string(),
+                            payload,
+                            timestamp: bread_shared::now_unix_ms(),
+                        })
+                        .await;
+                }
+                netlink_packet_core::NetlinkPayload::InnerMessage(RtnlMessage::DelAddress(
+                    addr,
+                )) => {
+                    let address = addr.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::address::nlas::Nla::Address(bytes) => {
+                            Some(bytes.clone())
+                        }
+                        netlink_packet_route::address::nlas::Nla::Local(bytes) => {
+                            Some(bytes.clone())
+                        }
+                        _ => None,
+                    });
+                    let label = addr.nlas.iter().find_map(|nla| match nla {
+                        netlink_packet_route::address::nlas::Nla::Label(label) => {
+                            Some(label.clone())
+                        }
+                        _ => None,
+                    });
+                    let ip = address.as_deref().and_then(ip_from_bytes);
+                    let payload = json!({
+                        "ifindex": addr.header.index,
+                        "prefix_len": addr.header.prefix_len,
+                        "family": addr.header.family,
+                        "address": ip,
+                        "label": label
+                    });
+                    let _ = tx
+                        .send(RawEvent {
+                            source: AdapterSource::Network,
+                            kind: "address.removed".to_string(),
+                            payload,
+                            timestamp: bread_shared::now_unix_ms(),
+                        })
+                        .await;
+                }
+                _ => {
+                    debug!("unhandled netlink message");
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+fn ip_from_bytes(bytes: &[u8]) -> Option<String> {
+    match bytes.len() {
+        4 => Some(IpAddr::V4(Ipv4Addr::new(bytes[0], bytes[1], bytes[2], bytes[3])).to_string()),
+        16 => {
+            let octets: [u8; 16] = bytes.try_into().ok()?;
+            Some(IpAddr::V6(Ipv6Addr::from(octets)).to_string())
+        }
+        _ => None,
+    }
+}

breadd/src/adapters/power.rs

@@ -0,0 +1,92 @@
+use std::fs;
+use std::path::Path;
+
+use anyhow::Result;
+use bread_shared::{now_unix_ms, AdapterSource, RawEvent};
+use serde_json::json;
+use tokio::sync::mpsc;
+use tokio::time::{sleep, Duration};
+use tracing::debug;
+
+use crate::adapters::Adapter;
+
+#[derive(Clone)]
+pub struct PowerAdapter {
+    poll_interval_secs: u64,
+}
+
+impl PowerAdapter {
+    pub fn new(poll_interval_secs: u64) -> Self {
+        Self { poll_interval_secs }
+    }
+}
+
+#[async_trait::async_trait]
+impl Adapter for PowerAdapter {
+    fn name(&self) -> &'static str {
+        "power"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        debug!("power adapter started");
+
+        let mut last = read_power_state();
+        tx.send(power_raw_event(&last)).await?;
+
+        loop {
+            sleep(Duration::from_secs(self.poll_interval_secs.max(5))).await;
+            let now = read_power_state();
+            if now != last {
+                tx.send(power_raw_event(&now)).await?;
+                last = now;
+            }
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq)]
+struct PowerSnapshot {
+    ac_connected: bool,
+    battery_percent: Option<u8>,
+}
+
+fn power_raw_event(snapshot: &PowerSnapshot) -> RawEvent {
+    RawEvent {
+        source: AdapterSource::Power,
+        kind: "power.snapshot".to_string(),
+        payload: json!({
+            "ac_connected": snapshot.ac_connected,
+            "battery_percent": snapshot.battery_percent,
+        }),
+        timestamp: now_unix_ms(),
+    }
+}
+
+fn read_power_state() -> PowerSnapshot {
+    let power_dir = Path::new("/sys/class/power_supply");
+    let mut ac_connected = false;
+    let mut battery_percent = None;
+
+    if let Ok(entries) = fs::read_dir(power_dir) {
+        for entry in entries.flatten() {
+            let path = entry.path();
+            let typ = fs::read_to_string(path.join("type")).unwrap_or_default();
+            if typ.trim().eq_ignore_ascii_case("Mains") || typ.trim().eq_ignore_ascii_case("USB") {
+                let online = fs::read_to_string(path.join("online")).unwrap_or_default();
+                if online.trim() == "1" {
+                    ac_connected = true;
+                }
+            } else if typ.trim().eq_ignore_ascii_case("Battery") {
+                let cap = fs::read_to_string(path.join("capacity")).unwrap_or_default();
+                if let Ok(parsed) = cap.trim().parse::<u8>() {
+                    battery_percent = Some(parsed.min(100));
+                }
+            }
+        }
+    }
+
+    PowerSnapshot {
+        ac_connected,
+        battery_percent,
+    }
+}

breadd/src/adapters/power_upower.rs

@@ -0,0 +1,147 @@
+use anyhow::{anyhow, Result};
+use async_trait::async_trait;
+use bread_shared::{AdapterSource, RawEvent};
+use futures_util::StreamExt;
+use serde_json::json;
+use std::collections::HashMap;
+use tokio::sync::mpsc;
+use tracing::{debug, info};
+use zbus::zvariant::{OwnedObjectPath, OwnedValue};
+use zbus::{Message, MessageStream};
+
+use super::Adapter;
+
+#[derive(Clone, Debug)]
+pub struct UPowerAdapter;
+
+impl UPowerAdapter {
+    pub fn new() -> Result<Self> {
+        // Attempt to connect to system bus to validate availability
+        // We don't actually open the connection here because zbus::Connection::system() is async.
+        Ok(Self)
+    }
+}
+
+#[async_trait]
+impl Adapter for UPowerAdapter {
+    fn name(&self) -> &'static str {
+        "upower"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        info!("UPower adapter starting (attempting DBus subscription)");
+
+        // Defer loading zbus until runtime to avoid build-time optional complexity
+        match zbus::Connection::system().await {
+            Ok(conn) => {
+                let payload = json!({"message": "upower:connected"});
+                let _ = tx
+                    .send(RawEvent {
+                        source: AdapterSource::Power,
+                        kind: "power.upower.connected".to_string(),
+                        payload,
+                        timestamp: bread_shared::now_unix_ms(),
+                    })
+                    .await;
+
+                let mut stream = MessageStream::from(&conn);
+                while let Some(result) = stream.next().await {
+                    match result {
+                        Ok(message) => match parse_upower_message(&message) {
+                            Ok(event) => {
+                                let _ = tx.send(event).await;
+                            }
+                            Err(err) => {
+                                debug!("upower parse error: {err:?}");
+                            }
+                        },
+                        Err(err) => {
+                            debug!("upower stream error: {err:?}");
+                        }
+                    }
+                }
+
+                Ok(())
+            }
+            Err(e) => {
+                // If DBus connection fails, fall back to periodic polling handled elsewhere
+                Err(anyhow!(e))
+            }
+        }
+    }
+}
+
+fn parse_upower_message(message: &Message) -> Result<RawEvent> {
+    let header = message.header()?;
+    let interface = header.interface()?.map(|v| v.as_str()).unwrap_or("");
+    let member = header.member()?.map(|v| v.as_str()).unwrap_or("");
+    let path = header.path()?.map(|v| v.as_str()).unwrap_or("");
+
+    if interface == "org.freedesktop.UPower" {
+        match member {
+            "DeviceAdded" => {
+                let (device_path,): (OwnedObjectPath,) = message.body()?;
+                let payload = json!({"device_path": device_path.as_str()});
+                return Ok(RawEvent {
+                    source: AdapterSource::Power,
+                    kind: "power.device.added".to_string(),
+                    payload,
+                    timestamp: bread_shared::now_unix_ms(),
+                });
+            }
+            "DeviceRemoved" => {
+                let (device_path,): (OwnedObjectPath,) = message.body()?;
+                let payload = json!({"device_path": device_path.as_str()});
+                return Ok(RawEvent {
+                    source: AdapterSource::Power,
+                    kind: "power.device.removed".to_string(),
+                    payload,
+                    timestamp: bread_shared::now_unix_ms(),
+                });
+            }
+            _ => {}
+        }
+    }
+
+    if interface == "org.freedesktop.DBus.Properties" && member == "PropertiesChanged" {
+        let (iface, changed, invalidated): (String, HashMap<String, OwnedValue>, Vec<String>) =
+            message.body()?;
+        if iface == "org.freedesktop.UPower.Device" {
+            let changed_json = serde_json::to_value(&changed).unwrap_or_else(|_| json!({}));
+            let normalized = json!({
+                "percentage": changed_json.get("Percentage").and_then(|v| v.as_f64()),
+                "state": changed_json.get("State").and_then(|v| v.as_u64()),
+                "time_to_empty": changed_json.get("TimeToEmpty").and_then(|v| v.as_i64()),
+                "time_to_full": changed_json.get("TimeToFull").and_then(|v| v.as_i64()),
+                "is_present": changed_json.get("IsPresent").and_then(|v| v.as_bool()),
+                "battery_type": changed_json.get("Type").and_then(|v| v.as_u64()),
+                "online": changed_json.get("Online").and_then(|v| v.as_bool()),
+                "native_path": changed_json.get("NativePath").and_then(|v| v.as_str()),
+                "model": changed_json.get("Model").and_then(|v| v.as_str()),
+                "vendor": changed_json.get("Vendor").and_then(|v| v.as_str()),
+                "serial": changed_json.get("Serial").and_then(|v| v.as_str()),
+                "update_time": changed_json.get("UpdateTime").and_then(|v| v.as_u64()),
+            });
+            let payload = json!({
+                "path": path,
+                "properties": changed_json,
+                "invalidated": invalidated,
+                "normalized": normalized
+            });
+
+            return Ok(RawEvent {
+                source: AdapterSource::Power,
+                kind: "power.device.changed".to_string(),
+                payload,
+                timestamp: bread_shared::now_unix_ms(),
+            });
+        }
+    }
+
+    Ok(RawEvent {
+        source: AdapterSource::Power,
+        kind: "power.upower.signal".to_string(),
+        payload: json!({"interface": interface, "member": member, "path": path}),
+        timestamp: bread_shared::now_unix_ms(),
+    })
+}

breadd/src/adapters/udev.rs

@@ -0,0 +1,190 @@
+use std::os::unix::io::AsRawFd;
+
+use anyhow::Result;
+use bread_shared::{now_unix_ms, AdapterSource, RawEvent};
+use serde_json::json;
+use tokio::sync::mpsc;
+use tracing::debug;
+
+use crate::adapters::Adapter;
+
+#[derive(Clone)]
+pub struct UdevAdapter {
+    subsystems: Vec<String>,
+}
+
+impl UdevAdapter {
+    pub fn new(subsystems: Vec<String>) -> Self {
+        Self { subsystems }
+    }
+
+    pub async fn enumerate_existing(&self, tx: &mpsc::Sender<RawEvent>) -> Result<()> {
+        let devices = enumerate_with_udev(&self.subsystems)?;
+        for device in devices {
+            tx.send(RawEvent {
+                source: AdapterSource::Udev,
+                kind: "udev.enumerate".to_string(),
+                payload: json!({
+                    "action": "add",
+                    "id": device.id,
+                    "name": device.name,
+                    "subsystem": device.subsystem,
+                }),
+                timestamp: now_unix_ms(),
+            })
+            .await?;
+        }
+        Ok(())
+    }
+}
+
+#[async_trait::async_trait]
+impl Adapter for UdevAdapter {
+    fn name(&self) -> &'static str {
+        "udev"
+    }
+
+    async fn run(&self, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+        debug!("udev adapter started");
+        run_udev_monitor(self.subsystems.clone(), tx).await
+    }
+}
+
+struct ScannedDevice {
+    id: String,
+    name: String,
+    subsystem: String,
+}
+
+// udev::MonitorSocket uses a non-blocking socket; calling iter().next() without
+// first polling the fd returns None immediately and exits the loop — which is
+// why the old code silently fell back to sysfs on every start.  We use poll(2)
+// inside spawn_blocking so the thread truly blocks until events are available.
+async fn run_udev_monitor(subsystems: Vec<String>, tx: mpsc::Sender<RawEvent>) -> Result<()> {
+    tokio::task::spawn_blocking(move || -> Result<()> {
+        let mut builder = udev::MonitorBuilder::new()?;
+        for subsystem in &subsystems {
+            builder = builder.match_subsystem(subsystem)?;
+        }
+        let socket = builder.listen()?;
+        let fd = socket.as_raw_fd();
+
+        loop {
+            let mut pfd = libc::pollfd {
+                fd,
+                events: libc::POLLIN,
+                revents: 0,
+            };
+
+            let ret = unsafe { libc::poll(&mut pfd, 1, 1000) };
+            if ret < 0 {
+                let err = std::io::Error::last_os_error();
+                if err.kind() == std::io::ErrorKind::Interrupted {
+                    continue;
+                }
+                return Err(err.into());
+            }
+            if ret == 0 {
+                // Timeout: bail if the downstream channel has been dropped.
+                if tx.is_closed() {
+                    return Ok(());
+                }
+                continue;
+            }
+            if pfd.revents & libc::POLLIN != 0 {
+                while let Some(event) = socket.iter().next() {
+                    if tx.blocking_send(build_event(&event)).is_err() {
+                        return Ok(());
+                    }
+                }
+            }
+        }
+    })
+    .await??;
+
+    Ok(())
+}
+
+fn build_event(event: &udev::Event) -> RawEvent {
+    let action = event
+        .action()
+        .map(|a| a.to_string_lossy().to_string())
+        .unwrap_or_else(|| "change".to_string());
+    let subsystem = event
+        .subsystem()
+        .map(|s| s.to_string_lossy().to_string())
+        .unwrap_or_else(|| "unknown".to_string());
+    let name = event
+        .property_value("ID_MODEL")
+        .or_else(|| event.property_value("NAME"))
+        .map(|v| v.to_string_lossy().to_string())
+        .or_else(|| event.devnode().map(|n| n.display().to_string()))
+        .unwrap_or_else(|| "unknown".to_string());
+    let id = event.syspath().to_string_lossy().to_string();
+
+    RawEvent {
+        source: AdapterSource::Udev,
+        kind: "udev.change".to_string(),
+        payload: json!({
+            "action": action,
+            "id": id,
+            "name": name,
+            "subsystem": subsystem,
+            "id_input_keyboard": prop_bool(event, "ID_INPUT_KEYBOARD"),
+            "id_input_mouse": prop_bool(event, "ID_INPUT_MOUSE"),
+            "id_input_joystick": prop_bool(event, "ID_INPUT_JOYSTICK"),
+            "id_input_touchpad": prop_bool(event, "ID_INPUT_TOUCHPAD"),
+            "id_input_tablet": prop_bool(event, "ID_INPUT_TABLET"),
+            "id_usb_class": prop_str(event, "ID_USB_CLASS"),
+            "id_usb_interfaces": prop_str(event, "ID_USB_INTERFACES"),
+            "id_vendor": prop_str(event, "ID_VENDOR"),
+            "id_model": prop_str(event, "ID_MODEL"),
+            "vendor_id": prop_str(event, "ID_VENDOR_ID"),
+            "product_id": prop_str(event, "ID_MODEL_ID"),
+        }),
+        timestamp: now_unix_ms(),
+    }
+}
+
+fn enumerate_with_udev(subsystems: &[String]) -> Result<Vec<ScannedDevice>> {
+    let mut enumerator = udev::Enumerator::new()?;
+    for subsystem in subsystems {
+        enumerator.match_subsystem(subsystem)?;
+    }
+
+    let mut out = Vec::new();
+    for dev in enumerator.scan_devices()? {
+        let subsystem = dev
+            .subsystem()
+            .map(|s| s.to_string_lossy().to_string())
+            .unwrap_or_else(|| "unknown".to_string());
+        let name = dev
+            .property_value("ID_MODEL")
+            .or_else(|| dev.property_value("NAME"))
+            .map(|v| v.to_string_lossy().to_string())
+            .or_else(|| dev.sysname().to_str().map(ToString::to_string))
+            .unwrap_or_else(|| "unknown".to_string());
+        let id = dev.syspath().to_string_lossy().to_string();
+        out.push(ScannedDevice {
+            id,
+            name,
+            subsystem,
+        });
+    }
+
+    Ok(out)
+}
+
+fn prop_bool(event: &udev::Event, key: &str) -> bool {
+    event
+        .property_value(key)
+        .and_then(|v| v.to_str())
+        .map(|v| v == "1")
+        .unwrap_or(false)
+}
+
+fn prop_str(event: &udev::Event, key: &str) -> Option<String> {
+    event
+        .property_value(key)
+        .map(|v| v.to_string_lossy().to_string())
+}

breadd/src/core/config.rs

@@ -0,0 +1,504 @@
+use std::env;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use anyhow::Result;
+use serde::Deserialize;
+
+#[derive(Debug, Clone, Default, Deserialize)]
+pub struct Config {
+    #[serde(default)]
+    pub daemon: DaemonConfig,
+    #[serde(default)]
+    pub lua: LuaConfig,
+    #[serde(default)]
+    pub modules: ModulesConfig,
+    #[serde(default)]
+    pub adapters: AdaptersConfig,
+    #[serde(default)]
+    pub notifications: NotificationsConfig,
+    #[serde(default)]
+    pub events: EventsConfig,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct DaemonConfig {
+    #[serde(default = "default_log_level")]
+    pub log_level: String,
+    #[serde(default)]
+    pub socket_path: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct LuaConfig {
+    #[serde(default = "default_lua_entry")]
+    pub entry_point: String,
+    #[serde(default = "default_lua_modules")]
+    pub module_path: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct ModulesConfig {
+    #[serde(default = "default_true")]
+    pub builtin: bool,
+    #[serde(default)]
+    pub disable: Vec<String>,
+}
+
+#[derive(Debug, Clone, Default, Deserialize)]
+pub struct AdaptersConfig {
+    #[serde(default)]
+    pub hyprland: AdapterToggle,
+    #[serde(default)]
+    pub udev: UdevConfig,
+    #[serde(default)]
+    pub power: PowerConfig,
+    #[serde(default)]
+    pub network: AdapterToggle,
+    #[serde(default)]
+    pub bluetooth: AdapterToggle,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct AdapterToggle {
+    #[serde(default = "default_true")]
+    pub enabled: bool,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct UdevConfig {
+    #[serde(default = "default_true")]
+    pub enabled: bool,
+    #[serde(default = "default_udev_subsystems")]
+    pub subsystems: Vec<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct PowerConfig {
+    #[serde(default = "default_true")]
+    pub enabled: bool,
+    #[serde(default = "default_poll_interval")]
+    pub poll_interval_secs: u64,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct EventsConfig {
+    #[serde(default = "default_dedup_window")]
+    pub dedup_window_ms: u64,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct NotificationsConfig {
+    #[serde(default = "default_notify_timeout")]
+    pub default_timeout_ms: i64,
+    #[serde(default = "default_notify_urgency")]
+    pub default_urgency: String,
+    #[serde(default = "default_notify_path")]
+    pub notify_send_path: String,
+}
+
+impl Default for DaemonConfig {
+    fn default() -> Self {
+        Self {
+            log_level: default_log_level(),
+            socket_path: String::new(),
+        }
+    }
+}
+
+impl Default for LuaConfig {
+    fn default() -> Self {
+        Self {
+            entry_point: default_lua_entry(),
+            module_path: default_lua_modules(),
+        }
+    }
+}
+
+impl Default for ModulesConfig {
+    fn default() -> Self {
+        Self {
+            builtin: default_true(),
+            disable: Vec::new(),
+        }
+    }
+}
+
+impl Default for AdapterToggle {
+    fn default() -> Self {
+        Self {
+            enabled: default_true(),
+        }
+    }
+}
+
+impl Default for UdevConfig {
+    fn default() -> Self {
+        Self {
+            enabled: default_true(),
+            subsystems: default_udev_subsystems(),
+        }
+    }
+}
+
+impl Default for PowerConfig {
+    fn default() -> Self {
+        Self {
+            enabled: default_true(),
+            poll_interval_secs: default_poll_interval(),
+        }
+    }
+}
+
+impl Default for EventsConfig {
+    fn default() -> Self {
+        Self {
+            dedup_window_ms: default_dedup_window(),
+        }
+    }
+}
+
+impl Default for NotificationsConfig {
+    fn default() -> Self {
+        Self {
+            default_timeout_ms: default_notify_timeout(),
+            default_urgency: default_notify_urgency(),
+            notify_send_path: default_notify_path(),
+        }
+    }
+}
+
+impl Config {
+    pub fn load() -> Result<Self> {
+        let path = config_path();
+        if !path.exists() {
+            return Ok(Self::default());
+        }
+
+        let raw = fs::read_to_string(&path)?;
+        let cfg: Config = toml::from_str(&raw)?;
+        Ok(cfg)
+    }
+
+    pub fn socket_path(&self) -> PathBuf {
+        if !self.daemon.socket_path.is_empty() {
+            return expand_home(&self.daemon.socket_path);
+        }
+
+        let runtime_dir = env::var("XDG_RUNTIME_DIR").unwrap_or_else(|_| "/tmp".to_string());
+        Path::new(&runtime_dir).join("bread").join("breadd.sock")
+    }
+
+    pub fn lua_entry_point(&self) -> PathBuf {
+        expand_home(&self.lua.entry_point)
+    }
+
+    pub fn lua_module_path(&self) -> PathBuf {
+        expand_home(&self.lua.module_path)
+    }
+}
+
+fn config_path() -> PathBuf {
+    if let Ok(xdg) = env::var("XDG_CONFIG_HOME") {
+        return Path::new(&xdg).join("bread").join("breadd.toml");
+    }
+
+    expand_home("~/.config/bread/breadd.toml")
+}
+
+fn expand_home(input: &str) -> PathBuf {
+    if let Some(stripped) = input.strip_prefix("~/") {
+        if let Ok(home) = env::var("HOME") {
+            return Path::new(&home).join(stripped);
+        }
+    }
+    PathBuf::from(input)
+}
+
+fn default_log_level() -> String {
+    "info".to_string()
+}
+
+fn default_lua_entry() -> String {
+    "~/.config/bread/init.lua".to_string()
+}
+
+fn default_lua_modules() -> String {
+    "~/.config/bread/modules".to_string()
+}
+
+fn default_true() -> bool {
+    true
+}
+
+fn default_poll_interval() -> u64 {
+    30
+}
+
+fn default_dedup_window() -> u64 {
+    100
+}
+
+fn default_notify_timeout() -> i64 {
+    3000
+}
+
+fn default_notify_urgency() -> String {
+    "normal".to_string()
+}
+
+fn default_notify_path() -> String {
+    "notify-send".to_string()
+}
+
+fn default_udev_subsystems() -> Vec<String> {
+    vec![
+        "usb".to_string(),
+        "input".to_string(),
+        "drm".to_string(),
+        "power_supply".to_string(),
+    ]
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::Mutex;
+
+    // Tests that mutate process env vars must serialize against each other
+    // — cargo runs tests in parallel by default and HOME/XDG_RUNTIME_DIR are
+    // process-global. Tests that don't touch env are free to run unguarded.
+    static ENV_LOCK: Mutex<()> = Mutex::new(());
+
+    struct EnvGuard {
+        saved: Vec<(&'static str, Option<String>)>,
+        _guard: std::sync::MutexGuard<'static, ()>,
+    }
+
+    impl EnvGuard {
+        fn new(vars: &[&'static str]) -> Self {
+            let guard = ENV_LOCK.lock().unwrap_or_else(|p| p.into_inner());
+            let saved = vars.iter().map(|k| (*k, std::env::var(k).ok())).collect();
+            Self {
+                saved,
+                _guard: guard,
+            }
+        }
+    }
+
+    impl Drop for EnvGuard {
+        fn drop(&mut self) {
+            for (key, value) in &self.saved {
+                match value {
+                    Some(v) => std::env::set_var(key, v),
+                    None => std::env::remove_var(key),
+                }
+            }
+        }
+    }
+
+    #[test]
+    fn default_config_uses_documented_defaults() {
+        let cfg = Config::default();
+        assert_eq!(cfg.daemon.log_level, "info");
+        assert!(cfg.daemon.socket_path.is_empty());
+        assert_eq!(cfg.lua.entry_point, "~/.config/bread/init.lua");
+        assert_eq!(cfg.lua.module_path, "~/.config/bread/modules");
+        assert!(cfg.adapters.hyprland.enabled);
+        assert!(cfg.adapters.udev.enabled);
+        assert!(cfg.adapters.power.enabled);
+        assert!(cfg.adapters.network.enabled);
+        assert!(cfg.adapters.bluetooth.enabled);
+        assert_eq!(cfg.adapters.power.poll_interval_secs, 30);
+        assert_eq!(cfg.events.dedup_window_ms, 100);
+        assert_eq!(cfg.notifications.default_timeout_ms, 3000);
+        assert_eq!(cfg.notifications.default_urgency, "normal");
+        assert_eq!(cfg.notifications.notify_send_path, "notify-send");
+        assert!(cfg.modules.builtin);
+        assert!(cfg.modules.disable.is_empty());
+    }
+
+    #[test]
+    fn default_udev_subsystems_match_documented_list() {
+        assert_eq!(
+            default_udev_subsystems(),
+            vec!["usb", "input", "drm", "power_supply"]
+        );
+    }
+
+    #[test]
+    fn parse_empty_toml_yields_defaults() {
+        let cfg: Config = toml::from_str("").unwrap();
+        assert_eq!(cfg.daemon.log_level, "info");
+        assert!(cfg.adapters.hyprland.enabled);
+    }
+
+    #[test]
+    fn parse_full_toml_overrides_all_values() {
+        let raw = r#"
+[daemon]
+log_level = "debug"
+socket_path = "/tmp/custom.sock"
+
+[lua]
+entry_point = "/abs/init.lua"
+module_path = "/abs/mods"
+
+[modules]
+builtin = false
+disable = ["foo", "bar"]
+
+[adapters.hyprland]
+enabled = false
+
+[adapters.udev]
+enabled = true
+subsystems = ["usb"]
+
+[adapters.power]
+enabled = false
+poll_interval_secs = 5
+
+[adapters.network]
+enabled = false
+
+[adapters.bluetooth]
+enabled = false
+
+[events]
+dedup_window_ms = 250
+
+[notifications]
+default_timeout_ms = 1000
+default_urgency = "critical"
+notify_send_path = "/usr/local/bin/notify-send"
+"#;
+        let cfg: Config = toml::from_str(raw).unwrap();
+        assert_eq!(cfg.daemon.log_level, "debug");
+        assert_eq!(cfg.daemon.socket_path, "/tmp/custom.sock");
+        assert_eq!(cfg.lua.entry_point, "/abs/init.lua");
+        assert_eq!(cfg.lua.module_path, "/abs/mods");
+        assert!(!cfg.modules.builtin);
+        assert_eq!(cfg.modules.disable, vec!["foo", "bar"]);
+        assert!(!cfg.adapters.hyprland.enabled);
+        assert!(cfg.adapters.udev.enabled);
+        assert_eq!(cfg.adapters.udev.subsystems, vec!["usb"]);
+        assert!(!cfg.adapters.power.enabled);
+        assert_eq!(cfg.adapters.power.poll_interval_secs, 5);
+        assert!(!cfg.adapters.network.enabled);
+        assert!(!cfg.adapters.bluetooth.enabled);
+        assert_eq!(cfg.events.dedup_window_ms, 250);
+        assert_eq!(cfg.notifications.default_timeout_ms, 1000);
+        assert_eq!(cfg.notifications.default_urgency, "critical");
+    }
+
+    #[test]
+    fn parse_partial_toml_fills_missing_with_defaults() {
+        let raw = r#"
+[daemon]
+log_level = "trace"
+"#;
+        let cfg: Config = toml::from_str(raw).unwrap();
+        assert_eq!(cfg.daemon.log_level, "trace");
+        // Untouched sections still get their defaults.
+        assert!(cfg.adapters.hyprland.enabled);
+        assert_eq!(cfg.events.dedup_window_ms, 100);
+    }
+
+    #[test]
+    fn invalid_toml_returns_error() {
+        let result: Result<Config, _> = toml::from_str("[daemon\nbroken");
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn socket_path_uses_explicit_path_verbatim() {
+        let mut cfg = Config::default();
+        cfg.daemon.socket_path = "/run/bread.sock".to_string();
+        assert_eq!(cfg.socket_path(), PathBuf::from("/run/bread.sock"));
+    }
+
+    #[test]
+    fn socket_path_expands_tilde_when_explicit() {
+        let _g = EnvGuard::new(&["HOME"]);
+        std::env::set_var("HOME", "/synthetic/home");
+        let mut cfg = Config::default();
+        cfg.daemon.socket_path = "~/sockets/bread.sock".to_string();
+        assert_eq!(
+            cfg.socket_path(),
+            PathBuf::from("/synthetic/home/sockets/bread.sock")
+        );
+    }
+
+    #[test]
+    fn socket_path_falls_back_to_xdg_runtime_dir() {
+        let _g = EnvGuard::new(&["XDG_RUNTIME_DIR"]);
+        std::env::set_var("XDG_RUNTIME_DIR", "/tmp/xdg");
+        let cfg = Config::default();
+        assert_eq!(
+            cfg.socket_path(),
+            PathBuf::from("/tmp/xdg/bread/breadd.sock")
+        );
+    }
+
+    #[test]
+    fn socket_path_uses_tmp_when_no_xdg_runtime_dir() {
+        let _g = EnvGuard::new(&["XDG_RUNTIME_DIR"]);
+        std::env::remove_var("XDG_RUNTIME_DIR");
+        let cfg = Config::default();
+        assert_eq!(cfg.socket_path(), PathBuf::from("/tmp/bread/breadd.sock"));
+    }
+
+    #[test]
+    fn lua_entry_point_and_module_path_expand_tilde() {
+        let _g = EnvGuard::new(&["HOME"]);
+        std::env::set_var("HOME", "/synthetic/home");
+        let cfg = Config::default();
+        assert_eq!(
+            cfg.lua_entry_point(),
+            PathBuf::from("/synthetic/home/.config/bread/init.lua")
+        );
+        assert_eq!(
+            cfg.lua_module_path(),
+            PathBuf::from("/synthetic/home/.config/bread/modules")
+        );
+    }
+
+    #[test]
+    fn lua_entry_point_returns_absolute_path_unchanged() {
+        let mut cfg = Config::default();
+        cfg.lua.entry_point = "/etc/bread/init.lua".to_string();
+        assert_eq!(cfg.lua_entry_point(), PathBuf::from("/etc/bread/init.lua"));
+    }
+
+    #[test]
+    fn expand_home_handles_missing_home_env() {
+        let _g = EnvGuard::new(&["HOME"]);
+        std::env::remove_var("HOME");
+        // Without HOME, ~/-prefixed paths fall back to the literal string.
+        assert_eq!(expand_home("~/foo"), PathBuf::from("~/foo"));
+        // Non-tilde paths are unchanged regardless.
+        assert_eq!(expand_home("/abs/path"), PathBuf::from("/abs/path"));
+    }
+
+    #[test]
+    fn config_path_respects_xdg_config_home() {
+        let _g = EnvGuard::new(&["XDG_CONFIG_HOME", "HOME"]);
+        std::env::set_var("XDG_CONFIG_HOME", "/synthetic/xdg-config");
+        assert_eq!(
+            config_path(),
+            PathBuf::from("/synthetic/xdg-config/bread/breadd.toml")
+        );
+    }
+
+    #[test]
+    fn config_path_falls_back_to_home_when_no_xdg() {
+        let _g = EnvGuard::new(&["XDG_CONFIG_HOME", "HOME"]);
+        std::env::remove_var("XDG_CONFIG_HOME");
+        std::env::set_var("HOME", "/synthetic/home");
+        assert_eq!(
+            config_path(),
+            PathBuf::from("/synthetic/home/.config/bread/breadd.toml")
+        );
+    }
+}

breadd/src/core/mod.rs

@@ -0,0 +1,6 @@
+pub mod config;
+pub mod normalizer;
+pub mod state_engine;
+pub mod subscriptions;
+pub mod supervisor;
+pub mod types;

breadd/src/core/normalizer.rs

@@ -0,0 +1,964 @@
+use std::collections::HashMap;
+use std::sync::RwLock;
+
+use bread_shared::{AdapterSource, BreadEvent, RawEvent};
+use serde_json::{json, Value};
+
+/// How many multiples of `dedup_window_ms` an entry must be idle before eviction.
+const EVICT_MULTIPLIER: u64 = 60;
+
+pub struct EventNormalizer {
+    dedup_window_ms: u64,
+    recent: RwLock<HashMap<String, u64>>,
+    /// Tracks the first time a physical device (keyed by verb+vendor_id+product_id)
+    /// fired within the current window, so subsequent child-node events from the
+    /// same plug-in are suppressed at the normalizer level.
+    seen_devices: RwLock<HashMap<String, u64>>,
+}
+
+impl EventNormalizer {
+    pub fn new(dedup_window_ms: u64) -> Self {
+        Self {
+            dedup_window_ms,
+            recent: RwLock::new(HashMap::new()),
+            seen_devices: RwLock::new(HashMap::new()),
+        }
+    }
+
+    pub fn normalize(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let mut out = match raw.source {
+            AdapterSource::Udev => self.normalize_udev(raw),
+            AdapterSource::Hyprland => self.normalize_hyprland(raw),
+            AdapterSource::Power => self.normalize_power(raw),
+            AdapterSource::Network => self.normalize_network(raw),
+            AdapterSource::Bluetooth => self.normalize_bluetooth(raw),
+            AdapterSource::System => vec![BreadEvent {
+                event: raw.kind.clone(),
+                timestamp: raw.timestamp,
+                source: raw.source,
+                data: raw.payload.clone(),
+            }],
+        };
+
+        out.retain(|ev| self.accept(ev));
+        out
+    }
+
+    fn normalize_udev(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let action = raw
+            .payload
+            .get("action")
+            .and_then(Value::as_str)
+            .unwrap_or("change");
+
+        // "bind" is the kernel attaching a driver to an interface — not a meaningful
+        // device state change for automation purposes.
+        if action == "bind" {
+            return vec![];
+        }
+
+        let name = raw
+            .payload
+            .get("name")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+        let vendor = raw
+            .payload
+            .get("id_vendor")
+            .and_then(Value::as_str)
+            .unwrap_or_default();
+        let vendor_id = raw
+            .payload
+            .get("vendor_id")
+            .and_then(Value::as_str)
+            .unwrap_or_default();
+        let product_id = raw
+            .payload
+            .get("product_id")
+            .and_then(Value::as_str)
+            .unwrap_or_default();
+        let subsystem = raw
+            .payload
+            .get("subsystem")
+            .and_then(Value::as_str)
+            .unwrap_or_default();
+
+        // Drop anonymous child USB interfaces (e.g. 3-5:1.0, 3-5:1.1) that carry
+        // no identity information — they are USB protocol artefacts, not devices.
+        if name == "unknown" && vendor.is_empty() && vendor_id.is_empty() {
+            return vec![];
+        }
+
+        // For connected/disconnected, suppress duplicate events from child nodes of
+        // the same physical device (e.g. input66, mouse0, event17 all from one plug-in).
+        // Key by verb+vendor_id+product_id so a second distinct device of the same
+        // model plugged in after the window still fires correctly.
+        let verb = match action {
+            "add" => "connected",
+            "remove" => "disconnected",
+            _ => "changed",
+        };
+
+        if (verb == "connected" || verb == "disconnected")
+            && !vendor_id.is_empty()
+            && !product_id.is_empty()
+        {
+            let device_key = format!("{}:{}:{}", verb, vendor_id, product_id);
+            let now = raw.timestamp;
+            let already_seen = {
+                let seen = self.seen_devices.read().unwrap_or_else(|p| p.into_inner());
+                seen.get(&device_key)
+                    .map(|&last| now.saturating_sub(last) < self.dedup_window_ms)
+                    .unwrap_or(false)
+            };
+            if already_seen {
+                return vec![];
+            }
+            let mut seen = self.seen_devices.write().unwrap_or_else(|p| p.into_inner());
+            seen.insert(device_key, now);
+            // Evict stale entries
+            let evict_before =
+                now.saturating_sub(self.dedup_window_ms.saturating_mul(EVICT_MULTIPLIER));
+            if evict_before > 0 {
+                seen.retain(|_, &mut last| last >= evict_before);
+            }
+        }
+
+        let id = raw
+            .payload
+            .get("id")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+
+        // Device name is always "unknown" here; the state engine applies user-defined
+        // classification rules from devices.lua before dispatching to subscribers.
+        vec![BreadEvent {
+            event: format!("bread.device.{}", verb),
+            timestamp: raw.timestamp,
+            source: AdapterSource::Udev,
+            data: json!({
+                "id": id,
+                "device": "unknown",
+                "name": name,
+                "vendor": vendor,
+                "vendor_id": vendor_id,
+                "product_id": product_id,
+                "subsystem": subsystem,
+                "raw": raw.payload,
+            }),
+        }]
+    }
+
+    fn normalize_hyprland(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let kind = raw
+            .payload
+            .get("kind")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+        let data = raw
+            .payload
+            .get("data")
+            .and_then(Value::as_str)
+            .unwrap_or("");
+
+        match kind {
+            "workspace" | "workspacev2" => vec![BreadEvent {
+                event: "bread.workspace.changed".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: raw.payload.clone(),
+            }],
+            "createworkspace" => vec![BreadEvent {
+                event: "bread.workspace.created".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: json!({ "workspace": data }),
+            }],
+            "destroyworkspace" => vec![BreadEvent {
+                event: "bread.workspace.destroyed".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: json!({ "workspace": data }),
+            }],
+            "monitoradded" => vec![BreadEvent {
+                event: "bread.monitor.connected".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: json!({ "name": data }),
+            }],
+            "monitorremoved" => vec![BreadEvent {
+                event: "bread.monitor.disconnected".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: json!({ "name": data }),
+            }],
+            "activewindow" => vec![BreadEvent {
+                event: "bread.window.focus.changed".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: raw.payload.clone(),
+            }],
+            "activewindowv2" => {
+                let fields = split_hyprland_fields(data);
+                vec![BreadEvent {
+                    event: "bread.window.focused".to_string(),
+                    timestamp: raw.timestamp,
+                    source: AdapterSource::Hyprland,
+                    data: json!({
+                        "address": fields.first().unwrap_or(&"")
+                    }),
+                }]
+            }
+            "openwindow" => {
+                let fields = split_hyprland_fields(data);
+                vec![BreadEvent {
+                    event: "bread.window.opened".to_string(),
+                    timestamp: raw.timestamp,
+                    source: AdapterSource::Hyprland,
+                    data: json!({
+                        "address": fields.first().unwrap_or(&""),
+                        "workspace": fields.get(1).unwrap_or(&""),
+                        "class": fields.get(2).unwrap_or(&""),
+                        "title": fields.get(3).unwrap_or(&""),
+                    }),
+                }]
+            }
+            "closewindow" => {
+                let fields = split_hyprland_fields(data);
+                vec![BreadEvent {
+                    event: "bread.window.closed".to_string(),
+                    timestamp: raw.timestamp,
+                    source: AdapterSource::Hyprland,
+                    data: json!({ "address": fields.first().unwrap_or(&"") }),
+                }]
+            }
+            "movewindow" => {
+                let fields = split_hyprland_fields(data);
+                vec![BreadEvent {
+                    event: "bread.window.moved".to_string(),
+                    timestamp: raw.timestamp,
+                    source: AdapterSource::Hyprland,
+                    data: json!({
+                        "address": fields.first().unwrap_or(&""),
+                        "workspace": fields.get(1).unwrap_or(&""),
+                    }),
+                }]
+            }
+            _ => vec![BreadEvent {
+                event: "bread.hyprland.event".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Hyprland,
+                data: raw.payload.clone(),
+            }],
+        }
+    }
+
+    fn normalize_power(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let mut events = Vec::new();
+
+        if let Some(ac) = raw.payload.get("ac_connected").and_then(Value::as_bool) {
+            events.push(BreadEvent {
+                event: if ac {
+                    "bread.power.ac.connected".to_string()
+                } else {
+                    "bread.power.ac.disconnected".to_string()
+                },
+                timestamp: raw.timestamp,
+                source: AdapterSource::Power,
+                data: raw.payload.clone(),
+            });
+        }
+
+        if let Some(level) = raw.payload.get("battery_percent").and_then(Value::as_u64) {
+            let battery_event = if level <= 5 {
+                Some("bread.power.battery.critical")
+            } else if level <= 10 {
+                Some("bread.power.battery.very_low")
+            } else if level <= 20 {
+                Some("bread.power.battery.low")
+            } else if level >= 100 {
+                Some("bread.power.battery.full")
+            } else {
+                None
+            };
+
+            if let Some(event) = battery_event {
+                events.push(BreadEvent {
+                    event: event.to_string(),
+                    timestamp: raw.timestamp,
+                    source: AdapterSource::Power,
+                    data: raw.payload.clone(),
+                });
+            }
+        }
+
+        if events.is_empty() {
+            events.push(BreadEvent {
+                event: "bread.power.changed".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Power,
+                data: raw.payload.clone(),
+            });
+        }
+
+        events
+    }
+
+    fn normalize_bluetooth(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let path = raw
+            .payload
+            .get("path")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+        let address = raw
+            .payload
+            .get("address")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+        let name = raw
+            .payload
+            .get("name")
+            .and_then(Value::as_str)
+            .or_else(|| {
+                raw.payload
+                    .pointer("/properties/Name")
+                    .or_else(|| raw.payload.pointer("/properties/Alias"))
+                    .and_then(Value::as_str)
+            })
+            .unwrap_or("unknown");
+
+        match raw.kind.as_str() {
+            "bluetooth.enumerate" | "bluetooth.device.connected" => vec![BreadEvent {
+                event: "bread.device.connected".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Bluetooth,
+                data: json!({
+                    "id": path,
+                    "device": "unknown",
+                    "name": name,
+                    "address": address,
+                    "subsystem": "bluetooth",
+                    "raw": raw.payload,
+                }),
+            }],
+            "bluetooth.device.disconnected" => vec![BreadEvent {
+                event: "bread.device.disconnected".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Bluetooth,
+                data: json!({
+                    "id": path,
+                    "device": "unknown",
+                    "name": name,
+                    "address": address,
+                    "subsystem": "bluetooth",
+                    "raw": raw.payload,
+                }),
+            }],
+            "bluetooth.device.added" => vec![BreadEvent {
+                event: "bread.bluetooth.device.paired".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Bluetooth,
+                data: json!({
+                    "id": path,
+                    "name": name,
+                    "address": address,
+                    "subsystem": "bluetooth",
+                    "raw": raw.payload,
+                }),
+            }],
+            "bluetooth.device.removed" => vec![BreadEvent {
+                event: "bread.bluetooth.device.unpaired".to_string(),
+                timestamp: raw.timestamp,
+                source: AdapterSource::Bluetooth,
+                data: json!({
+                    "id": path,
+                    "address": address,
+                    "subsystem": "bluetooth",
+                    "raw": raw.payload,
+                }),
+            }],
+            _ => vec![],
+        }
+    }
+
+    fn normalize_network(&self, raw: &RawEvent) -> Vec<BreadEvent> {
+        let online = raw
+            .payload
+            .get("online")
+            .and_then(Value::as_bool)
+            .unwrap_or(false);
+        let name = if online {
+            "bread.network.connected"
+        } else {
+            "bread.network.disconnected"
+        };
+
+        vec![BreadEvent {
+            event: name.to_string(),
+            timestamp: raw.timestamp,
+            source: AdapterSource::Network,
+            data: raw.payload.clone(),
+        }]
+    }
+
+    fn accept(&self, event: &BreadEvent) -> bool {
+        let key = format!("{}:{}", event.event, event.data);
+        let now = event.timestamp;
+
+        // Fast path: check under read lock first.
+        {
+            let recent = self.recent.read().unwrap_or_else(|p| p.into_inner());
+            if let Some(last) = recent.get(&key) {
+                if now.saturating_sub(*last) < self.dedup_window_ms {
+                    return false;
+                }
+            }
+        }
+
+        // Slow path: acquire write lock, re-check, insert, and periodically evict.
+        let mut recent = self.recent.write().unwrap_or_else(|p| p.into_inner());
+
+        // Re-check after acquiring write lock (another thread may have inserted between locks).
+        if let Some(last) = recent.get(&key) {
+            if now.saturating_sub(*last) < self.dedup_window_ms {
+                return false;
+            }
+        }
+
+        recent.insert(key.clone(), now);
+
+        // Evict stale entries to prevent unbounded growth.
+        let evict_before =
+            now.saturating_sub(self.dedup_window_ms.saturating_mul(EVICT_MULTIPLIER));
+        if evict_before > 0 {
+            recent.retain(|_, &mut last| last >= evict_before);
+        }
+
+        true
+    }
+}
+
+fn split_hyprland_fields(data: &str) -> Vec<&str> {
+    if data.is_empty() {
+        return Vec::new();
+    }
+    data.split(">>").collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn raw(source: AdapterSource, kind: &str, payload: Value, ts: u64) -> RawEvent {
+        RawEvent {
+            source,
+            kind: kind.to_string(),
+            payload,
+            timestamp: ts,
+        }
+    }
+
+    // ─── Udev ─────────────────────────────────────────────────────────────
+
+    #[test]
+    fn udev_add_emits_connected_with_identity_fields() {
+        let n = EventNormalizer::new(100);
+        let ev = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({
+                "action": "add",
+                "name": "Logitech Mouse",
+                "id_vendor": "Logitech",
+                "vendor_id": "046d",
+                "product_id": "c52b",
+                "subsystem": "usb",
+                "id": "1-1.4",
+            }),
+            1000,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.device.connected");
+        assert_eq!(out[0].data.get("vendor_id").unwrap(), "046d");
+        assert_eq!(out[0].data.get("product_id").unwrap(), "c52b");
+        assert_eq!(out[0].data.get("name").unwrap(), "Logitech Mouse");
+        assert_eq!(out[0].data.get("subsystem").unwrap(), "usb");
+        assert_eq!(out[0].data.get("device").unwrap(), "unknown");
+    }
+
+    #[test]
+    fn udev_remove_emits_disconnected() {
+        let n = EventNormalizer::new(100);
+        let ev = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({
+                "action": "remove",
+                "name": "Logitech",
+                "vendor_id": "046d",
+                "product_id": "c52b",
+                "subsystem": "usb",
+                "id": "1-1.4",
+            }),
+            1000,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.device.disconnected");
+    }
+
+    #[test]
+    fn udev_bind_action_is_suppressed() {
+        let n = EventNormalizer::new(100);
+        let ev = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({
+                "action": "bind",
+                "name": "x",
+                "vendor_id": "046d",
+                "product_id": "c52b",
+            }),
+            1000,
+        );
+        assert!(n.normalize(&ev).is_empty());
+    }
+
+    #[test]
+    fn udev_anonymous_child_interface_is_dropped() {
+        let n = EventNormalizer::new(100);
+        // No name, no vendor — pure USB protocol artefact.
+        let ev = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({
+                "action": "add",
+                "id": "3-5:1.0",
+            }),
+            1000,
+        );
+        assert!(n.normalize(&ev).is_empty());
+    }
+
+    #[test]
+    fn udev_dedupes_child_nodes_of_same_physical_device() {
+        let n = EventNormalizer::new(1000);
+        let mk = |id: &str, ts: u64| {
+            raw(
+                AdapterSource::Udev,
+                "udev",
+                json!({
+                    "action": "add",
+                    "name": "Hub Device",
+                    "vendor_id": "1d6b",
+                    "product_id": "0002",
+                    "subsystem": "usb",
+                    "id": id,
+                }),
+                ts,
+            )
+        };
+        // First child fires
+        assert_eq!(n.normalize(&mk("usb-1", 1000)).len(), 1);
+        // Sibling within window is suppressed
+        assert_eq!(n.normalize(&mk("usb-2", 1050)).len(), 0);
+        // After the dedup window, a sibling fires again
+        assert_eq!(n.normalize(&mk("usb-3", 3000)).len(), 1);
+    }
+
+    #[test]
+    fn udev_disconnect_does_not_share_dedup_with_connect() {
+        let n = EventNormalizer::new(1000);
+        let connect = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({"action": "add", "name": "x", "vendor_id": "1", "product_id": "2", "id": "a"}),
+            1000,
+        );
+        let disconnect = raw(
+            AdapterSource::Udev,
+            "udev",
+            json!({"action": "remove", "name": "x", "vendor_id": "1", "product_id": "2", "id": "a"}),
+            1100,
+        );
+        assert_eq!(n.normalize(&connect).len(), 1);
+        // Disconnect uses a different verb in the dedup key, so it fires.
+        assert_eq!(n.normalize(&disconnect).len(), 1);
+    }
+
+    // ─── Hyprland ─────────────────────────────────────────────────────────
+
+    #[test]
+    fn hyprland_workspace_change() {
+        let n = EventNormalizer::new(0);
+        let ev = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "workspace", "data": "2"}),
+            1,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.workspace.changed");
+    }
+
+    #[test]
+    fn hyprland_active_window_v2_parses_address_from_fields() {
+        let n = EventNormalizer::new(0);
+        let ev = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "activewindowv2", "data": "0xdeadbeef"}),
+            1,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.window.focused");
+        assert_eq!(out[0].data.get("address").unwrap(), "0xdeadbeef");
+    }
+
+    #[test]
+    fn hyprland_openwindow_splits_all_fields() {
+        let n = EventNormalizer::new(0);
+        let ev = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "openwindow", "data": "0xabc>>2>>firefox>>Mozilla Firefox"}),
+            1,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.window.opened");
+        let d = &out[0].data;
+        assert_eq!(d.get("address").unwrap(), "0xabc");
+        assert_eq!(d.get("workspace").unwrap(), "2");
+        assert_eq!(d.get("class").unwrap(), "firefox");
+        assert_eq!(d.get("title").unwrap(), "Mozilla Firefox");
+    }
+
+    #[test]
+    fn hyprland_unknown_kind_falls_through_to_generic_event() {
+        let n = EventNormalizer::new(0);
+        let ev = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "submap", "data": "resize"}),
+            1,
+        );
+        let out = n.normalize(&ev);
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.hyprland.event");
+    }
+
+    #[test]
+    fn hyprland_monitor_lifecycle() {
+        let n = EventNormalizer::new(0);
+        let added = n.normalize(&raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "monitoradded", "data": "HDMI-A-1"}),
+            1,
+        ));
+        let removed = n.normalize(&raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "monitorremoved", "data": "HDMI-A-1"}),
+            2,
+        ));
+        assert_eq!(added[0].event, "bread.monitor.connected");
+        assert_eq!(added[0].data.get("name").unwrap(), "HDMI-A-1");
+        assert_eq!(removed[0].event, "bread.monitor.disconnected");
+    }
+
+    // ─── Power ─────────────────────────────────────────────────────────────
+
+    #[test]
+    fn power_ac_connected_emits_named_event() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Power,
+            "power",
+            json!({"ac_connected": true}),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.power.ac.connected");
+    }
+
+    #[test]
+    fn power_battery_thresholds_select_correct_event() {
+        let n = EventNormalizer::new(0);
+        let cases = [
+            (3, "bread.power.battery.critical"),
+            (5, "bread.power.battery.critical"),
+            (8, "bread.power.battery.very_low"),
+            (10, "bread.power.battery.very_low"),
+            (15, "bread.power.battery.low"),
+            (20, "bread.power.battery.low"),
+            (100, "bread.power.battery.full"),
+        ];
+        for (level, expected) in cases {
+            let out = n.normalize(&raw(
+                AdapterSource::Power,
+                "power",
+                json!({"battery_percent": level}),
+                level * 1000,
+            ));
+            assert_eq!(
+                out[0].event, expected,
+                "level {level} should map to {expected}"
+            );
+        }
+    }
+
+    #[test]
+    fn power_mid_range_battery_emits_generic_changed() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Power,
+            "power",
+            json!({"battery_percent": 50}),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.power.changed");
+    }
+
+    #[test]
+    fn power_ac_and_battery_can_both_fire() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Power,
+            "power",
+            json!({"ac_connected": false, "battery_percent": 4}),
+            1,
+        ));
+        let names: Vec<&str> = out.iter().map(|e| e.event.as_str()).collect();
+        assert!(names.contains(&"bread.power.ac.disconnected"));
+        assert!(names.contains(&"bread.power.battery.critical"));
+    }
+
+    // ─── Bluetooth ─────────────────────────────────────────────────────────
+
+    #[test]
+    fn bluetooth_connected_emits_device_connected() {
+        let n = EventNormalizer::new(0);
+        let ev = raw(
+            AdapterSource::Bluetooth,
+            "bluetooth",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+                "properties": { "Connected": true },
+            }),
+            1,
+        );
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.device.connected",
+            ev.payload.clone(),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.device.connected");
+        assert_eq!(out[0].data.get("address").unwrap(), "AA:BB:CC:DD:EE:FF");
+        assert_eq!(out[0].data.get("subsystem").unwrap(), "bluetooth");
+        assert_eq!(out[0].data.get("device").unwrap(), "unknown");
+    }
+
+    #[test]
+    fn bluetooth_disconnected_emits_device_disconnected() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.device.disconnected",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+                "properties": { "Connected": false },
+            }),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.device.disconnected");
+    }
+
+    #[test]
+    fn bluetooth_enumerate_includes_name() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.enumerate",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+                "name": "WH-1000XM4",
+                "properties": {},
+            }),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.device.connected");
+        assert_eq!(out[0].data.get("name").unwrap(), "WH-1000XM4");
+    }
+
+    #[test]
+    fn bluetooth_paired_emits_bluetooth_specific_event() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.device.added",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+                "name": "My Headphones",
+                "properties": {},
+            }),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.bluetooth.device.paired");
+        assert_eq!(out[0].data.get("name").unwrap(), "My Headphones");
+    }
+
+    #[test]
+    fn bluetooth_unpaired_emits_bluetooth_specific_event() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.device.removed",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+            }),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.bluetooth.device.unpaired");
+        assert_eq!(out[0].data.get("address").unwrap(), "AA:BB:CC:DD:EE:FF");
+    }
+
+    #[test]
+    fn bluetooth_name_falls_back_to_properties() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::Bluetooth,
+            "bluetooth.device.connected",
+            json!({
+                "path": "/org/bluez/hci0/dev_AA_BB_CC_DD_EE_FF",
+                "address": "AA:BB:CC:DD:EE:FF",
+                "properties": { "Connected": true, "Name": "Fallback Name" },
+            }),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].data.get("name").unwrap(), "Fallback Name");
+    }
+
+    // ─── Network ───────────────────────────────────────────────────────────
+
+    #[test]
+    fn network_online_and_offline() {
+        let n = EventNormalizer::new(0);
+        let online = n.normalize(&raw(
+            AdapterSource::Network,
+            "net",
+            json!({"online": true}),
+            1,
+        ));
+        let offline = n.normalize(&raw(
+            AdapterSource::Network,
+            "net",
+            json!({"online": false}),
+            2,
+        ));
+        assert_eq!(online[0].event, "bread.network.connected");
+        assert_eq!(offline[0].event, "bread.network.disconnected");
+    }
+
+    // ─── System pass-through ───────────────────────────────────────────────
+
+    #[test]
+    fn system_events_pass_through_unchanged() {
+        let n = EventNormalizer::new(0);
+        let out = n.normalize(&raw(
+            AdapterSource::System,
+            "bread.custom.event",
+            json!({"foo": "bar"}),
+            1,
+        ));
+        assert_eq!(out.len(), 1);
+        assert_eq!(out[0].event, "bread.custom.event");
+        assert_eq!(out[0].source, AdapterSource::System);
+        assert_eq!(out[0].data.get("foo").unwrap(), "bar");
+    }
+
+    // ─── Dedup ─────────────────────────────────────────────────────────────
+
+    #[test]
+    fn dedup_drops_duplicate_within_window() {
+        let n = EventNormalizer::new(500);
+        let ev = raw(AdapterSource::Network, "net", json!({"online": true}), 1000);
+        assert_eq!(n.normalize(&ev).len(), 1);
+
+        let dup = raw(AdapterSource::Network, "net", json!({"online": true}), 1200);
+        assert_eq!(n.normalize(&dup).len(), 0);
+    }
+
+    #[test]
+    fn dedup_allows_after_window_elapses() {
+        let n = EventNormalizer::new(500);
+        let first = raw(AdapterSource::Network, "net", json!({"online": true}), 1000);
+        assert_eq!(n.normalize(&first).len(), 1);
+
+        let later = raw(AdapterSource::Network, "net", json!({"online": true}), 2000);
+        assert_eq!(n.normalize(&later).len(), 1);
+    }
+
+    #[test]
+    fn dedup_distinguishes_different_payloads() {
+        let n = EventNormalizer::new(10_000);
+        let a = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "workspace", "data": "1"}),
+            1000,
+        );
+        let b = raw(
+            AdapterSource::Hyprland,
+            "hypr",
+            json!({"kind": "workspace", "data": "2"}),
+            1100,
+        );
+        assert_eq!(n.normalize(&a).len(), 1);
+        // Different payloads = different dedup key
+        assert_eq!(n.normalize(&b).len(), 1);
+    }
+
+    #[test]
+    fn dedup_window_of_zero_allows_everything() {
+        let n = EventNormalizer::new(0);
+        for _ in 0..3 {
+            assert_eq!(
+                n.normalize(&raw(
+                    AdapterSource::Network,
+                    "net",
+                    json!({"online": true}),
+                    1000,
+                ))
+                .len(),
+                1
+            );
+        }
+    }
+
+    // ─── Helper ────────────────────────────────────────────────────────────
+
+    #[test]
+    fn split_fields_handles_empty_and_single() {
+        assert!(split_hyprland_fields("").is_empty());
+        assert_eq!(split_hyprland_fields("only"), vec!["only"]);
+        assert_eq!(split_hyprland_fields("a>>b>>c"), vec!["a", "b", "c"]);
+    }
+}

breadd/src/core/subscriptions.rs

@@ -0,0 +1,293 @@
+use std::collections::HashMap;
+
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+pub struct SubscriptionId(pub u64);
+
+#[derive(Debug, Clone)]
+pub struct Subscription {
+    pub id: SubscriptionId,
+    pub pattern: String,
+    pub once: bool,
+}
+
+#[derive(Default, Debug)]
+pub struct SubscriptionTable {
+    entries: Vec<Subscription>,
+    by_id: HashMap<SubscriptionId, usize>,
+    next_id: u64,
+}
+
+impl SubscriptionTable {
+    pub fn add_with_id(
+        &mut self,
+        id: SubscriptionId,
+        pattern: String,
+        once: bool,
+    ) -> SubscriptionId {
+        self.next_id = self.next_id.max(id.0.saturating_add(1));
+
+        let sub = Subscription { id, pattern, once };
+        self.entries.push(sub);
+        self.by_id.insert(id, self.entries.len() - 1);
+        id
+    }
+
+    pub fn remove(&mut self, id: SubscriptionId) -> bool {
+        let Some(idx) = self.by_id.remove(&id) else {
+            return false;
+        };
+
+        // swap_remove moves the last element into `idx`. We need to update by_id
+        // for that element. But first, remove its stale entry (it was at the last
+        // position before the swap); then re-insert it at the new position.
+        self.entries.swap_remove(idx);
+
+        if idx < self.entries.len() {
+            // The element that was at `last_idx` is now at `idx`.
+            let swapped_id = self.entries[idx].id;
+            self.by_id.remove(&swapped_id); // remove stale last_idx entry
+            self.by_id.insert(swapped_id, idx);
+        }
+
+        true
+    }
+
+    pub fn clear(&mut self) {
+        self.entries.clear();
+        self.by_id.clear();
+    }
+
+    pub fn match_event(&self, event_name: &str) -> Vec<Subscription> {
+        self.entries
+            .iter()
+            .filter(|sub| matches_pattern(&sub.pattern, event_name))
+            .cloned()
+            .collect()
+    }
+}
+
+fn matches_pattern(pattern: &str, event_name: &str) -> bool {
+    if pattern.ends_with(".*") {
+        let prefix = &pattern[..pattern.len() - 1];
+        return event_name.starts_with(prefix);
+    }
+
+    if let Some(prefix) = pattern.strip_suffix(".**") {
+        if event_name == prefix {
+            return true;
+        }
+    }
+
+    matches_glob(pattern.as_bytes(), event_name.as_bytes())
+}
+
+fn matches_glob(pattern: &[u8], text: &[u8]) -> bool {
+    if pattern.is_empty() {
+        return text.is_empty();
+    }
+
+    if pattern.len() >= 2 && pattern[0] == b'*' && pattern[1] == b'*' {
+        let mut idx = 2;
+        while pattern.len() >= idx + 2 && pattern[idx] == b'*' && pattern[idx + 1] == b'*' {
+            idx += 2;
+        }
+        let rest = &pattern[idx..];
+        if rest.is_empty() {
+            return true;
+        }
+        for offset in 0..=text.len() {
+            if matches_glob(rest, &text[offset..]) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    match pattern[0] {
+        b'*' => {
+            let mut offset = 0;
+            loop {
+                if matches_glob(&pattern[1..], &text[offset..]) {
+                    return true;
+                }
+                if offset == text.len() || text[offset] == b'.' {
+                    break;
+                }
+                offset += 1;
+            }
+            false
+        }
+        b'?' => {
+            if text.is_empty() || text[0] == b'.' {
+                return false;
+            }
+            matches_glob(&pattern[1..], &text[1..])
+        }
+        ch => {
+            if text.first().copied() != Some(ch) {
+                return false;
+            }
+            matches_glob(&pattern[1..], &text[1..])
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn exact_match() {
+        assert!(matches_pattern(
+            "bread.device.dock.connected",
+            "bread.device.dock.connected"
+        ));
+        assert!(!matches_pattern(
+            "bread.device.dock.connected",
+            "bread.device.dock.disconnected"
+        ));
+    }
+
+    #[test]
+    fn single_segment_wildcard() {
+        assert!(matches_pattern(
+            "bread.device.*",
+            "bread.device.dock.connected"
+        ));
+        assert!(matches_pattern("bread.device.*", "bread.device.foo"));
+        assert!(!matches_pattern("bread.device.*", "bread.device"));
+    }
+
+    #[test]
+    fn recursive_wildcard() {
+        assert!(matches_pattern(
+            "bread.device.**",
+            "bread.device.dock.connected"
+        ));
+        assert!(matches_pattern("bread.**", "bread.device.dock.connected"));
+        assert!(matches_pattern("bread.**", "bread"));
+    }
+
+    #[test]
+    fn single_char_wildcard() {
+        assert!(matches_pattern("bread.monitor.?", "bread.monitor.1"));
+        assert!(!matches_pattern("bread.monitor.?", "bread.monitor.10"));
+        assert!(!matches_pattern("bread.monitor.?", "bread.monitor."));
+    }
+
+    #[test]
+    fn star_does_not_cross_dot_segments() {
+        // `*` matches within a segment only.
+        assert!(matches_pattern(
+            "bread.*.connected",
+            "bread.device.connected"
+        ));
+        assert!(!matches_pattern(
+            "bread.*.connected",
+            "bread.device.dock.connected"
+        ));
+    }
+
+    #[test]
+    fn double_star_matches_zero_or_more_segments() {
+        assert!(matches_pattern("bread.**", "bread.a"));
+        assert!(matches_pattern("bread.**", "bread.a.b.c.d"));
+    }
+
+    #[test]
+    fn empty_pattern_matches_only_empty_text() {
+        assert!(matches_pattern("", ""));
+        assert!(!matches_pattern("", "bread"));
+    }
+
+    #[test]
+    fn empty_text_only_matches_wildcards() {
+        assert!(matches_pattern("**", ""));
+        assert!(!matches_pattern("bread.*", ""));
+    }
+
+    // ─── SubscriptionTable ────────────────────────────────────────────────
+
+    #[test]
+    fn table_add_assigns_provided_id_and_finds_match() {
+        let mut t = SubscriptionTable::default();
+        let id = t.add_with_id(SubscriptionId(7), "bread.window.*".into(), false);
+        assert_eq!(id, SubscriptionId(7));
+
+        let matches = t.match_event("bread.window.opened");
+        assert_eq!(matches.len(), 1);
+        assert_eq!(matches[0].id, SubscriptionId(7));
+        assert_eq!(matches[0].pattern, "bread.window.*");
+        assert!(!matches[0].once);
+    }
+
+    #[test]
+    fn table_match_returns_all_matching_subscriptions() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "bread.window.opened".into(), false);
+        t.add_with_id(SubscriptionId(2), "bread.window.*".into(), false);
+        t.add_with_id(SubscriptionId(3), "bread.**".into(), true);
+        t.add_with_id(SubscriptionId(4), "bread.device.*".into(), false);
+
+        let matches = t.match_event("bread.window.opened");
+        let ids: Vec<u64> = matches.iter().map(|s| s.id.0).collect();
+        assert!(ids.contains(&1));
+        assert!(ids.contains(&2));
+        assert!(ids.contains(&3));
+        assert!(!ids.contains(&4));
+    }
+
+    #[test]
+    fn table_remove_returns_true_only_for_known_ids() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "a".into(), false);
+        assert!(t.remove(SubscriptionId(1)));
+        // Second remove of the same id is false.
+        assert!(!t.remove(SubscriptionId(1)));
+        // Removing a never-known id is false.
+        assert!(!t.remove(SubscriptionId(999)));
+    }
+
+    #[test]
+    fn table_remove_preserves_other_entries_after_swap_remove() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "a".into(), false);
+        t.add_with_id(SubscriptionId(2), "b".into(), false);
+        t.add_with_id(SubscriptionId(3), "c".into(), false);
+
+        // Remove the middle entry — swap_remove will move entry 3 into the slot.
+        assert!(t.remove(SubscriptionId(2)));
+
+        // Subsequent removes still work, proving the by_id index was kept consistent.
+        assert!(t.remove(SubscriptionId(3)));
+        assert!(t.remove(SubscriptionId(1)));
+    }
+
+    #[test]
+    fn table_clear_removes_all() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "a".into(), false);
+        t.add_with_id(SubscriptionId(2), "b".into(), false);
+        t.clear();
+        assert!(t.match_event("a").is_empty());
+        assert!(t.match_event("b").is_empty());
+        // After clear, the ids are reusable.
+        assert!(!t.remove(SubscriptionId(1)));
+    }
+
+    #[test]
+    fn table_match_returns_empty_for_unmatched_event() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "bread.device.*".into(), false);
+        assert!(t.match_event("bread.window.opened").is_empty());
+    }
+
+    #[test]
+    fn table_once_flag_is_preserved_in_match_result() {
+        let mut t = SubscriptionTable::default();
+        t.add_with_id(SubscriptionId(1), "bread.test".into(), true);
+        let matches = t.match_event("bread.test");
+        assert_eq!(matches.len(), 1);
+        assert!(matches[0].once);
+    }
+}

breadd/src/core/supervisor.rs

@@ -0,0 +1,68 @@
+use std::future::Future;
+
+use tokio::sync::watch;
+use tokio::time::{sleep, Duration};
+use tracing::{error, info, warn};
+
+pub fn spawn_supervised<F, Fut>(
+    name: &'static str,
+    mut shutdown_rx: watch::Receiver<bool>,
+    mut task_factory: F,
+) where
+    F: FnMut() -> Fut + Send + 'static,
+    Fut: Future<Output = anyhow::Result<()>> + Send + 'static,
+{
+    tokio::spawn(async move {
+        let mut attempt: u32 = 0;
+
+        loop {
+            if *shutdown_rx.borrow() {
+                info!(adapter = name, "shutdown requested");
+                break;
+            }
+
+            let result = tokio::select! {
+                _ = shutdown_rx.changed() => {
+                    if *shutdown_rx.borrow() {
+                        info!(adapter = name, "shutdown requested");
+                        break;
+                    }
+                    continue;
+                }
+                result = task_factory() => result,
+            };
+
+            match result {
+                Ok(()) => {
+                    info!(adapter = name, "adapter task exited cleanly");
+                    attempt = 0;
+                }
+                Err(err) => {
+                    error!(adapter = name, error = %err, "adapter task failed");
+                    attempt = attempt.saturating_add(1);
+                }
+            }
+
+            if *shutdown_rx.borrow() {
+                info!(adapter = name, "shutdown requested");
+                break;
+            }
+
+            let wait_ms = 500u64.saturating_mul(2u64.saturating_pow(attempt.min(6)));
+            warn!(
+                adapter = name,
+                delay_ms = wait_ms,
+                "restarting adapter after failure"
+            );
+            tokio::select! {
+                _ = sleep(Duration::from_millis(wait_ms)) => {},
+                _ = shutdown_rx.changed() => {
+                    if *shutdown_rx.borrow() {
+                        info!(adapter = name, "shutdown requested");
+                        break;
+                    }
+                }
+            }
+        }
+    });
+}

breadd/src/core/types.rs

@@ -0,0 +1,130 @@
+use std::collections::{BTreeMap, HashMap};
+
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub struct RuntimeState {
+    pub monitors: Vec<Monitor>,
+    pub workspaces: Vec<Workspace>,
+    pub active_workspace: Option<String>,
+    pub active_window: Option<String>,
+    pub devices: DeviceTopology,
+    pub network: NetworkState,
+    pub power: PowerState,
+    pub profile: ProfileState,
+    pub modules: Vec<ModuleStatus>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Monitor {
+    pub name: String,
+    pub connected: bool,
+    pub resolution: Option<String>,
+    pub position: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Workspace {
+    pub id: String,
+    pub monitor: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct DeviceTopology {
+    pub connected: Vec<Device>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Device {
+    pub id: String,
+    pub name: String,
+    pub device: String,
+    pub subsystem: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub vendor_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub product_id: Option<String>,
+}
+
+/// One set of match conditions. All provided fields must match.
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct MatchCondition {
+    pub vendor_id: Option<String>,
+    pub product_id: Option<String>,
+    pub name: Option<String>,
+    pub vendor: Option<String>,
+    pub name_contains: Option<String>,
+    pub id_input_keyboard: Option<bool>,
+    pub id_input_mouse: Option<bool>,
+    pub id_input_tablet: Option<bool>,
+    /// True triggers the compound USB hub + secondary-interface check.
+    pub usb_hub: Option<bool>,
+    pub id_usb_class: Option<String>,
+    pub subsystem: Option<String>,
+}
+
+/// A device rule from `devices.lua`. The device name is assigned if ANY
+/// condition in `conditions` matches (OR semantics across conditions,
+/// AND semantics within a condition).
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DeviceRule {
+    pub device: String,
+    pub conditions: Vec<MatchCondition>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct NetworkState {
+    pub interfaces: HashMap<String, InterfaceState>,
+    pub online: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct InterfaceState {
+    pub up: bool,
+}
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub struct PowerState {
+    pub ac_connected: bool,
+    pub battery_percent: Option<u8>,
+    pub battery_low: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProfileState {
+    pub active: String,
+    pub history: Vec<String>,
+    pub profiles: BTreeMap<String, String>,
+}
+
+impl Default for ProfileState {
+    fn default() -> Self {
+        Self {
+            active: "default".to_string(),
+            history: Vec::new(),
+            profiles: BTreeMap::new(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ModuleStatus {
+    pub name: String,
+    pub status: ModuleLoadState,
+    pub last_error: Option<String>,
+    #[serde(default)]
+    pub builtin: bool,
+    #[serde(default)]
+    pub store: HashMap<String, Value>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ModuleLoadState {
+    Loaded,
+    LoadError,
+    NotFound,
+    Degraded,
+    Disabled,
+}

breadd/src/ipc/mod.rs

@@ -0,0 +1,478 @@
+use std::collections::{HashMap, VecDeque};
+use std::fs;
+use std::os::unix::fs::PermissionsExt;
+use std::path::PathBuf;
+use std::process;
+use std::sync::atomic::AtomicU64;
+use std::sync::Arc;
+use std::time::Instant;
+
+use anyhow::{anyhow, Result};
+use bread_shared::{now_unix_ms, AdapterSource, BreadEvent};
+use serde::{Deserialize, Serialize};
+use serde_json::{json, Value};
+use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
+use tokio::net::{UnixListener, UnixStream};
+use tokio::sync::{broadcast, mpsc, watch, RwLock};
+use tracing::{error, info, warn};
+
+use crate::adapters::AdapterStatus;
+use crate::core::state_engine::StateHandle;
+use crate::lua::RuntimeHandle;
+
+#[derive(Clone)]
+pub struct Server {
+    socket_path: PathBuf,
+    state_handle: StateHandle,
+    event_tx: broadcast::Sender<BreadEvent>,
+    lua_runtime: RuntimeHandle,
+    emit_tx: mpsc::UnboundedSender<BreadEvent>,
+    adapter_status: Arc<RwLock<HashMap<String, AdapterStatus>>>,
+    subscription_count: Arc<AtomicU64>,
+    event_buffer: Arc<std::sync::Mutex<VecDeque<BreadEvent>>>,
+    started_at: Instant,
+    pid: u32,
+}
+
+#[derive(Debug, Deserialize)]
+struct IpcRequest {
+    id: String,
+    method: String,
+    #[serde(default)]
+    params: Value,
+}
+
+#[derive(Debug, Serialize)]
+struct IpcResponse {
+    id: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    result: Option<Value>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    error: Option<String>,
+}
+
+impl Server {
+    // Server::new legitimately requires all 8 fields; a builder pattern here would be
+    // over-engineering for a single-call-site constructor.
+    #[allow(clippy::too_many_arguments)]
+    pub fn new(
+        socket_path: PathBuf,
+        state_handle: StateHandle,
+        event_tx: broadcast::Sender<BreadEvent>,
+        lua_runtime: RuntimeHandle,
+        emit_tx: mpsc::UnboundedSender<BreadEvent>,
+        adapter_status: Arc<RwLock<HashMap<String, AdapterStatus>>>,
+        subscription_count: Arc<AtomicU64>,
+        event_buffer: Arc<std::sync::Mutex<VecDeque<BreadEvent>>>,
+    ) -> Self {
+        Self {
+            socket_path,
+            state_handle,
+            event_tx,
+            lua_runtime,
+            emit_tx,
+            adapter_status,
+            subscription_count,
+            event_buffer,
+            started_at: Instant::now(),
+            pid: process::id(),
+        }
+    }
+
+    pub async fn serve(&self, mut shutdown_rx: watch::Receiver<bool>) -> Result<()> {
+        if let Some(parent) = self.socket_path.parent() {
+            fs::create_dir_all(parent)?;
+        }
+
+        if self.socket_path.exists() {
+            fs::remove_file(&self.socket_path)?;
+        }
+
+        let listener = UnixListener::bind(&self.socket_path)?;
+        fs::set_permissions(&self.socket_path, fs::Permissions::from_mode(0o600))?;
+
+        info!(socket = %self.socket_path.display(), "ipc server listening");
+
+        loop {
+            tokio::select! {
+                _ = shutdown_rx.changed() => {
+                    if *shutdown_rx.borrow() {
+                        break;
+                    }
+                }
+                accept = listener.accept() => {
+                    let (stream, _) = accept?;
+                    let server = self.clone();
+                    tokio::spawn(async move {
+                        if let Err(err) = server.handle_connection(stream).await {
+                            warn!(error = %err, "ipc connection failed");
+                        }
+                    });
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    async fn handle_connection(&self, stream: UnixStream) -> Result<()> {
+        let (read_half, mut write_half) = stream.into_split();
+        let mut lines = BufReader::new(read_half).lines();
+
+        while let Some(line) = lines.next_line().await? {
+            if line.trim().is_empty() {
+                continue;
+            }
+
+            let req: IpcRequest = serde_json::from_str(&line)?;
+            if req.method == "events.subscribe" {
+                let filter = req
+                    .params
+                    .get("filter")
+                    .and_then(Value::as_str)
+                    .map(ToString::to_string);
+                let ok = IpcResponse {
+                    id: req.id,
+                    result: Some(json!({ "subscribed": true })),
+                    error: None,
+                };
+                write_half
+                    .write_all(format!("{}\n", serde_json::to_string(&ok)?).as_bytes())
+                    .await?;
+                self.stream_events(&mut write_half, filter).await?;
+                return Ok(());
+            }
+
+            let response = match self.handle_request(req).await {
+                Ok(res) => IpcResponse {
+                    id: res.0,
+                    result: Some(res.1),
+                    error: None,
+                },
+                Err((id, err)) => IpcResponse {
+                    id,
+                    result: None,
+                    error: Some(err),
+                },
+            };
+
+            write_half
+                .write_all(format!("{}\n", serde_json::to_string(&response)?).as_bytes())
+                .await?;
+        }
+
+        Ok(())
+    }
+
+    async fn handle_request(
+        &self,
+        req: IpcRequest,
+    ) -> std::result::Result<(String, Value), (String, String)> {
+        let id = req.id.clone();
+        let result = match req.method.as_str() {
+            "ping" => Ok(json!({ "ok": true })),
+            "state.get" => {
+                let key = req.params.get("key").and_then(Value::as_str).unwrap_or("");
+                let value = self
+                    .state_handle
+                    .state_get(key)
+                    .await
+                    .ok_or_else(|| anyhow!("state path not found"));
+                value.map_err(|e| e.to_string())
+            }
+            "state.dump" => Ok(self.state_handle.state_dump().await),
+            "modules.list" => {
+                let full = self.state_handle.state_dump().await;
+                Ok(full.get("modules").cloned().unwrap_or_else(|| json!([])))
+            }
+            "modules.reload" => {
+                let started = Instant::now();
+                if let Err(err) = self.lua_runtime.reload().await {
+                    return Err((id, err.to_string()));
+                }
+                let duration_ms = started.elapsed().as_millis();
+                let modules = self
+                    .state_handle
+                    .state_dump()
+                    .await
+                    .get("modules")
+                    .cloned()
+                    .unwrap_or_else(|| json!([]));
+                Ok(json!({
+                    "ok": true,
+                    "duration_ms": duration_ms,
+                    "modules": modules,
+                }))
+            }
+            "profile.list" => {
+                let full = self.state_handle.state_dump().await;
+                let profiles = full
+                    .get("profile")
+                    .and_then(|v| v.get("profiles"))
+                    .cloned()
+                    .unwrap_or_else(|| json!({}));
+                Ok(profiles)
+            }
+            "profile.activate" => {
+                let Some(name) = req.params.get("name").and_then(Value::as_str) else {
+                    return Err((id, "missing profile name".to_string()));
+                };
+
+                self.state_handle.set_profile(name.to_string());
+                if self
+                    .emit_tx
+                    .send(BreadEvent::new(
+                        "bread.profile.activated",
+                        AdapterSource::System,
+                        json!({ "name": name }),
+                    ))
+                    .is_err()
+                {
+                    return Err((id, "emit channel closed".to_string()));
+                }
+                Ok(json!({ "active": name }))
+            }
+            "emit" => {
+                let Some(event) = req.params.get("event").and_then(Value::as_str) else {
+                    return Err((id, "missing event name".to_string()));
+                };
+                let data = req.params.get("data").cloned().unwrap_or_else(|| json!({}));
+                if self
+                    .emit_tx
+                    .send(BreadEvent::new(event, AdapterSource::System, data))
+                    .is_err()
+                {
+                    return Err((id, "emit channel closed".to_string()));
+                }
+                Ok(json!({ "emitted": true }))
+            }
+            "health" => {
+                let uptime_ms = self.started_at.elapsed().as_millis();
+                let state = self.state_handle.state_dump().await;
+                let modules = state.get("modules").cloned().unwrap_or_else(|| json!([]));
+                let adapters = self.adapter_status.read().await.clone();
+                let subscription_count = self
+                    .subscription_count
+                    .load(std::sync::atomic::Ordering::Relaxed);
+                let recent_errors = self.lua_runtime.recent_errors();
+                Ok(json!({
+                    "ok": true,
+                    "pid": self.pid,
+                    "version": env!("CARGO_PKG_VERSION"),
+                    "uptime_ms": uptime_ms,
+                    "socket": self.socket_path.to_string_lossy(),
+                    "adapters": adapters,
+                    "modules": modules,
+                    "subscriptions": subscription_count,
+                    "recent_errors": recent_errors,
+                }))
+            }
+            "sync.status" => {
+                let sync_path = bread_sync::config::bread_config_dir().join("sync.toml");
+                match std::fs::read_to_string(&sync_path)
+                    .ok()
+                    .and_then(|s| s.parse::<toml::Value>().ok())
+                {
+                    Some(toml) => {
+                        let machine = toml
+                            .get("machine")
+                            .and_then(|m| m.get("name"))
+                            .and_then(|v| v.as_str())
+                            .unwrap_or("unknown");
+                        let remote = toml
+                            .get("remote")
+                            .and_then(|r| r.get("url"))
+                            .and_then(|v| v.as_str())
+                            .unwrap_or("unknown");
+                        Ok(json!({
+                            "initialized": true,
+                            "machine": machine,
+                            "remote": remote,
+                        }))
+                    }
+                    None => Ok(json!({ "initialized": false })),
+                }
+            }
+            "events.replay" => {
+                let since_ms = req
+                    .params
+                    .get("since_ms")
+                    .and_then(Value::as_u64)
+                    .unwrap_or(0);
+                let cutoff = now_unix_ms().saturating_sub(since_ms);
+                let replay: Vec<BreadEvent> = self
+                    .event_buffer
+                    .lock()
+                    .map(|buf| {
+                        buf.iter()
+                            .filter(|e| e.timestamp >= cutoff)
+                            .cloned()
+                            .collect()
+                    })
+                    .unwrap_or_default();
+                Ok(serde_json::to_value(replay).unwrap_or_else(|_| json!([])))
+            }
+            _ => Err("unknown method".to_string()),
+        };
+
+        match result {
+            Ok(v) => Ok((id, v)),
+            Err(err) => Err((id, err)),
+        }
+    }
+
+    async fn stream_events(
+        &self,
+        writer: &mut tokio::net::unix::OwnedWriteHalf,
+        filter: Option<String>,
+    ) -> Result<()> {
+        let mut rx = self.event_tx.subscribe();
+        loop {
+            let evt = rx.recv().await?;
+            if let Some(filter) = filter.as_deref() {
+                if !matches_filter(&evt.event, filter) {
+                    continue;
+                }
+            }
+
+            let line = format!("{}\n", serde_json::to_string(&evt)?);
+            if let Err(err) = writer.write_all(line.as_bytes()).await {
+                error!(error = %err, "failed to write event stream line");
+                return Ok(());
+            }
+        }
+    }
+}
+
+fn matches_filter(event_name: &str, pattern: &str) -> bool {
+    // Delegate to the same glob logic used by the subscription table so that
+    // `bread events --filter "bread.device.**"` behaves identically to
+    // `bread.on("bread.device.**", ...)` in Lua.
+    if pattern.ends_with(".*") {
+        let prefix = &pattern[..pattern.len() - 1];
+        return event_name.starts_with(prefix);
+    }
+
+    if let Some(prefix) = pattern.strip_suffix(".**") {
+        if event_name == prefix || event_name.starts_with(&format!("{prefix}.")) {
+            return true;
+        }
+        return false;
+    }
+
+    matches_glob_filter(pattern.as_bytes(), event_name.as_bytes())
+}
+
+fn matches_glob_filter(pattern: &[u8], text: &[u8]) -> bool {
+    if pattern.is_empty() {
+        return text.is_empty();
+    }
+
+    if pattern.len() >= 2 && pattern[0] == b'*' && pattern[1] == b'*' {
+        let rest = &pattern[2..];
+        if rest.is_empty() {
+            return true;
+        }
+        for offset in 0..=text.len() {
+            if matches_glob_filter(rest, &text[offset..]) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    match pattern[0] {
+        b'*' => {
+            let mut offset = 0;
+            loop {
+                if matches_glob_filter(&pattern[1..], &text[offset..]) {
+                    return true;
+                }
+                if offset == text.len() || text[offset] == b'.' {
+                    break;
+                }
+                offset += 1;
+            }
+            false
+        }
+        b'?' => {
+            if text.is_empty() || text[0] == b'.' {
+                return false;
+            }
+            matches_glob_filter(&pattern[1..], &text[1..])
+        }
+        ch => {
+            if text.first().copied() != Some(ch) {
+                return false;
+            }
+            matches_glob_filter(&pattern[1..], &text[1..])
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::matches_filter;
+
+    #[test]
+    fn filter_exact_match() {
+        assert!(matches_filter("bread.window.opened", "bread.window.opened"));
+        assert!(!matches_filter(
+            "bread.window.opened",
+            "bread.window.closed"
+        ));
+    }
+
+    #[test]
+    fn filter_dot_star_matches_one_segment_only() {
+        assert!(matches_filter("bread.device.connected", "bread.device.*"));
+        assert!(matches_filter(
+            "bread.device.dock.connected",
+            "bread.device.*"
+        ));
+        assert!(!matches_filter("bread.device", "bread.device.*"));
+    }
+
+    #[test]
+    fn filter_dot_double_star_matches_zero_or_more_segments() {
+        // Matches the exact prefix (zero segments after).
+        assert!(matches_filter("bread.device", "bread.device.**"));
+        // And matches deeper paths.
+        assert!(matches_filter(
+            "bread.device.dock.connected",
+            "bread.device.**"
+        ));
+        // But not a sibling at the same depth.
+        assert!(!matches_filter(
+            "bread.network.connected",
+            "bread.device.**"
+        ));
+    }
+
+    #[test]
+    fn filter_question_mark_matches_single_char_not_dot() {
+        assert!(matches_filter("bread.x", "bread.?"));
+        assert!(!matches_filter("bread.xy", "bread.?"));
+        assert!(!matches_filter("bread.", "bread.?"));
+    }
+
+    #[test]
+    fn filter_mid_pattern_star_does_not_cross_dots() {
+        // A `*` in the middle of the pattern (not the `.*` suffix shortcut)
+        // matches within a single segment only.
+        assert!(matches_filter("bread.alpha.connected", "bread.*.connected"));
+        assert!(!matches_filter(
+            "bread.alpha.beta.connected",
+            "bread.*.connected"
+        ));
+    }
+
+    #[test]
+    fn filter_dot_star_at_end_acts_as_prefix_match() {
+        // `bread.*` ending the pattern is treated as a prefix match, so
+        // matches everything under `bread.` regardless of depth. This is
+        // consistent with the subscription table's pattern matcher.
+        assert!(matches_filter("bread.alpha", "bread.*"));
+        assert!(matches_filter("bread.alpha.beta", "bread.*"));
+    }
+}

breadd/src/main.rs

@@ -0,0 +1,159 @@
+mod adapters;
+mod core;
+mod ipc;
+mod lua;
+
+use std::collections::VecDeque;
+use std::sync::atomic::AtomicU64;
+use std::sync::Arc;
+
+use anyhow::Result;
+use bread_shared::{AdapterSource, BreadEvent, RawEvent};
+use tokio::sync::{broadcast, mpsc, watch, RwLock};
+use tracing::{error, info};
+use tracing_subscriber::EnvFilter;
+
+use crate::core::config::Config;
+use crate::core::normalizer::EventNormalizer;
+use crate::core::state_engine::{run_state_engine, StateHandle};
+use crate::core::types::RuntimeState;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let config = Config::load()?;
+    tracing_subscriber::fmt()
+        .with_env_filter(EnvFilter::new(config.daemon.log_level.clone()))
+        .init();
+
+    info!("starting breadd");
+
+    let state = Arc::new(RwLock::new(RuntimeState::default()));
+
+    let (raw_tx, mut raw_rx) = mpsc::channel::<RawEvent>(2048);
+    let (normalized_tx, normalized_rx) = mpsc::unbounded_channel::<BreadEvent>();
+    let (state_cmd_tx, state_cmd_rx) = mpsc::unbounded_channel();
+    let (event_stream_tx, _) = broadcast::channel(2048);
+    let (shutdown_tx, shutdown_rx) = watch::channel(false);
+
+    let subscription_count = Arc::new(AtomicU64::new(0));
+    let state_handle = StateHandle::new(state.clone(), state_cmd_tx);
+
+    let lua_runtime =
+        lua::spawn_runtime(config.clone(), state_handle.clone(), normalized_tx.clone())?;
+    let lua_tx = lua_runtime.sender();
+
+    tokio::spawn(run_state_engine(
+        normalized_rx,
+        state_cmd_rx,
+        state.clone(),
+        lua_tx,
+        event_stream_tx.clone(),
+        subscription_count.clone(),
+        shutdown_rx.clone(),
+    ));
+
+    let normalizer = Arc::new(EventNormalizer::new(config.events.dedup_window_ms));
+    {
+        let normalizer = normalizer.clone();
+        let normalized_tx = normalized_tx.clone();
+        let mut shutdown_rx = shutdown_rx.clone();
+        tokio::spawn(async move {
+            loop {
+                tokio::select! {
+                    _ = shutdown_rx.changed() => {
+                        if *shutdown_rx.borrow() {
+                            break;
+                        }
+                    }
+                    maybe_raw = raw_rx.recv() => {
+                        let Some(raw) = maybe_raw else {
+                            break;
+                        };
+                        for event in normalizer.normalize(&raw) {
+                            if normalized_tx.send(event).is_err() {
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        });
+    }
+
+    let adapter_manager = adapters::Manager::new(raw_tx, config.clone(), shutdown_rx.clone());
+    adapter_manager.start_all().await?;
+
+    let adapter_status = adapter_manager.status_handle();
+
+    let event_buffer = Arc::new(std::sync::Mutex::new(VecDeque::with_capacity(1000)));
+    {
+        let mut rx = event_stream_tx.subscribe();
+        let event_buffer = event_buffer.clone();
+        tokio::spawn(async move {
+            loop {
+                let evt = match rx.recv().await {
+                    Ok(evt) => evt,
+                    Err(_) => break,
+                };
+                if let Ok(mut buf) = event_buffer.lock() {
+                    if buf.len() >= 1000 {
+                        buf.pop_front();
+                    }
+                    buf.push_back(evt);
+                }
+            }
+        });
+    }
+
+    let _ = normalized_tx.send(BreadEvent::new(
+        "bread.system.startup",
+        AdapterSource::System,
+        serde_json::json!({}),
+    ));
+
+    let ipc_server = ipc::Server::new(
+        config.socket_path(),
+        state_handle,
+        event_stream_tx,
+        lua_runtime.clone(),
+        normalized_tx,
+        adapter_status,
+        subscription_count,
+        event_buffer,
+    );
+
+    info!("breadd fully started");
+    tokio::select! {
+        result = ipc_server.serve(shutdown_rx.clone()) => {
+            if let Err(err) = result {
+                error!(error = %err, "ipc server failed");
+            }
+        }
+        _ = wait_for_shutdown() => {
+            info!("shutdown signal received");
+        }
+    }
+
+    let _ = shutdown_tx.send(true);
+
+    lua_runtime.shutdown();
+    Ok(())
+}
+
+async fn wait_for_shutdown() {
+    let ctrl_c = tokio::signal::ctrl_c();
+    #[cfg(unix)]
+    {
+        use tokio::signal::unix::{signal, SignalKind};
+        let mut sigterm =
+            signal(SignalKind::terminate()).expect("failed to install SIGTERM handler");
+        tokio::select! {
+            _ = ctrl_c => {},
+            _ = sigterm.recv() => {},
+        }
+    }
+    #[cfg(not(unix))]
+    {
+        let _ = ctrl_c.await;
+    }
+}

breadd/tests/ipc_integration.rs

@@ -0,0 +1,518 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+use std::process::{Child, Command, Stdio};
+use std::time::{Duration, Instant};
+
+use anyhow::{anyhow, Result};
+use serde_json::{json, Value};
+use tempfile::TempDir;
+use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
+use tokio::net::UnixStream;
+use tokio::time::sleep;
+
+#[tokio::test]
+async fn ping_and_state_dump_work() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let ping = harness.send_request("ping", json!({})).await?;
+    assert_eq!(ping.get("ok").and_then(Value::as_bool), Some(true));
+
+    let health = harness.send_request("health", json!({})).await?;
+    assert_eq!(health.get("ok").and_then(Value::as_bool), Some(true));
+    assert!(health.get("version").and_then(Value::as_str).is_some());
+    assert!(health.get("uptime_ms").and_then(Value::as_u64).is_some());
+
+    let dump = harness.send_request("state.dump", json!({})).await?;
+    assert!(dump.get("devices").is_some());
+    assert!(dump.get("profile").is_some());
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn unknown_method_returns_error() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("not.a.real.method", json!({})).await;
+    assert!(result.is_err(), "expected error for unknown method");
+    let msg = result.err().unwrap().to_string();
+    assert!(
+        msg.contains("unknown method"),
+        "expected 'unknown method', got: {msg}"
+    );
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn profile_activate_updates_state() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness
+        .send_request("profile.activate", json!({"name": "battery"}))
+        .await?;
+    assert_eq!(
+        result.get("active").and_then(Value::as_str),
+        Some("battery")
+    );
+
+    let dump = harness.send_request("state.dump", json!({})).await?;
+    assert_eq!(
+        dump.get("profile")
+            .and_then(|v| v.get("active"))
+            .and_then(Value::as_str),
+        Some("battery")
+    );
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn profile_activate_without_name_errors() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("profile.activate", json!({})).await;
+    assert!(result.is_err());
+    let msg = result.err().unwrap().to_string();
+    assert!(msg.contains("missing profile name"), "got: {msg}");
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn emit_without_event_errors() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("emit", json!({})).await;
+    assert!(result.is_err());
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn state_get_returns_specific_subtree() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let modules = harness
+        .send_request("state.get", json!({"key": "modules"}))
+        .await?;
+    assert!(modules.is_array(), "expected modules to be an array");
+
+    let active = harness
+        .send_request("state.get", json!({"key": "profile.active"}))
+        .await?;
+    assert!(
+        active.as_str().is_some(),
+        "expected profile.active to be a string, got: {active:?}"
+    );
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn state_get_missing_key_returns_error() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness
+        .send_request("state.get", json!({"key": "does.not.exist"}))
+        .await;
+    assert!(result.is_err());
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn modules_list_returns_array() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("modules.list", json!({})).await?;
+    assert!(result.is_array());
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn modules_reload_succeeds() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("modules.reload", json!({})).await?;
+    assert_eq!(result.get("ok").and_then(Value::as_bool), Some(true));
+    assert!(result.get("duration_ms").is_some());
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn sync_status_uninitialized_when_no_config() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("sync.status", json!({})).await?;
+    assert_eq!(
+        result.get("initialized").and_then(Value::as_bool),
+        Some(false)
+    );
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn sync_status_reports_initialized_with_config() -> Result<()> {
+    let harness = TestHarness::spawn_with_sync_config("myhost", "git@example.com:user/repo.git")?;
+    harness.wait_until_ready().await?;
+
+    let result = harness.send_request("sync.status", json!({})).await?;
+    assert_eq!(
+        result.get("initialized").and_then(Value::as_bool),
+        Some(true)
+    );
+    assert_eq!(
+        result.get("machine").and_then(Value::as_str),
+        Some("myhost")
+    );
+    assert_eq!(
+        result.get("remote").and_then(Value::as_str),
+        Some("git@example.com:user/repo.git")
+    );
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn events_replay_returns_buffered_events() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    // Emit a couple of events.
+    harness
+        .send_request("emit", json!({"event": "bread.replay.a", "data": {}}))
+        .await?;
+    harness
+        .send_request("emit", json!({"event": "bread.replay.b", "data": {}}))
+        .await?;
+
+    // Small delay so the events make it into the buffer.
+    sleep(Duration::from_millis(100)).await;
+
+    let result = harness
+        .send_request("events.replay", json!({"since_ms": 10_000}))
+        .await?;
+    let arr = result.as_array().expect("replay result should be array");
+    let names: Vec<&str> = arr
+        .iter()
+        .filter_map(|e| e.get("event").and_then(Value::as_str))
+        .collect();
+    assert!(names.contains(&"bread.replay.a"));
+    assert!(names.contains(&"bread.replay.b"));
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn event_stream_filter_excludes_non_matching_events() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let stream = UnixStream::connect(harness.socket_path()).await?;
+    let (read_half, mut write_half) = stream.into_split();
+    let subscribe = json!({
+        "id": "sub-x",
+        "method": "events.subscribe",
+        "params": {
+            "filter": "bread.match.*"
+        }
+    });
+    write_half
+        .write_all(format!("{}\n", serde_json::to_string(&subscribe)?).as_bytes())
+        .await?;
+
+    let mut reader = BufReader::new(read_half).lines();
+    // Consume the ack line.
+    reader.next_line().await?;
+
+    // Emit one matching and one non-matching event.
+    harness
+        .send_request("emit", json!({"event": "bread.nomatch.x", "data": {}}))
+        .await?;
+    harness
+        .send_request("emit", json!({"event": "bread.match.yes", "data": {}}))
+        .await?;
+
+    let deadline = Instant::now() + Duration::from_secs(5);
+    let mut matched = false;
+    while Instant::now() < deadline {
+        let Some(line) = reader.next_line().await? else {
+            break;
+        };
+        let event: Value = serde_json::from_str(&line)?;
+        let name = event.get("event").and_then(Value::as_str).unwrap_or("");
+        assert!(
+            !name.starts_with("bread.nomatch"),
+            "filter let through non-matching event: {name}"
+        );
+        if name == "bread.match.yes" {
+            matched = true;
+            break;
+        }
+    }
+    assert!(matched, "did not receive matching event through filter");
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn multiple_concurrent_clients_each_get_response() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+    let socket = harness.socket_path().to_path_buf();
+
+    let mut handles = Vec::new();
+    for i in 0..8 {
+        let socket = socket.clone();
+        handles.push(tokio::spawn(async move {
+            let stream = UnixStream::connect(&socket).await?;
+            let (read_half, mut write_half) = stream.into_split();
+            let req = json!({"id": i.to_string(), "method": "ping", "params": {}});
+            write_half
+                .write_all(format!("{}\n", serde_json::to_string(&req)?).as_bytes())
+                .await?;
+            let mut lines = BufReader::new(read_half).lines();
+            let line = lines.next_line().await?.ok_or_else(|| anyhow!("eof"))?;
+            let parsed: Value = serde_json::from_str(&line)?;
+            assert_eq!(
+                parsed.get("id").and_then(Value::as_str),
+                Some(i.to_string().as_str())
+            );
+            Ok::<(), anyhow::Error>(())
+        }));
+    }
+    for h in handles {
+        h.await??;
+    }
+
+    harness.shutdown();
+    Ok(())
+}
+
+#[tokio::test]
+async fn events_stream_receives_emitted_events() -> Result<()> {
+    let harness = TestHarness::spawn()?;
+    harness.wait_until_ready().await?;
+
+    let stream = UnixStream::connect(harness.socket_path()).await?;
+    let (read_half, mut write_half) = stream.into_split();
+    let subscribe = json!({
+        "id": "sub-1",
+        "method": "events.subscribe",
+        "params": {
+            "filter": "bread.system.*"
+        }
+    });
+    write_half
+        .write_all(format!("{}\n", serde_json::to_string(&subscribe)?).as_bytes())
+        .await?;
+
+    let mut reader = BufReader::new(read_half).lines();
+
+    let ack = reader
+        .next_line()
+        .await?
+        .ok_or_else(|| anyhow!("missing subscribe ack"))?;
+    let ack_json: Value = serde_json::from_str(&ack)?;
+    assert_eq!(
+        ack_json
+            .get("result")
+            .and_then(|v| v.get("subscribed"))
+            .and_then(Value::as_bool),
+        Some(true)
+    );
+
+    harness
+        .send_request(
+            "emit",
+            json!({
+                "event": "bread.system.test",
+                "data": { "ok": true }
+            }),
+        )
+        .await?;
+
+    let deadline = Instant::now() + Duration::from_secs(5);
+    let mut got = false;
+    while Instant::now() < deadline {
+        let Some(line) = reader.next_line().await? else {
+            break;
+        };
+        let event: Value = serde_json::from_str(&line)?;
+        if event.get("event").and_then(Value::as_str) == Some("bread.system.test") {
+            got = true;
+            break;
+        }
+    }
+
+    assert!(got, "did not receive emitted event on stream");
+    harness.shutdown();
+    Ok(())
+}
+
+struct TestHarness {
+    _temp: TempDir,
+    child: Child,
+    socket_path: PathBuf,
+}
+
+impl TestHarness {
+    fn spawn() -> Result<Self> {
+        Self::spawn_inner(None)
+    }
+
+    fn spawn_with_sync_config(machine: &str, remote_url: &str) -> Result<Self> {
+        Self::spawn_inner(Some((machine.to_string(), remote_url.to_string())))
+    }
+
+    fn spawn_inner(sync_config: Option<(String, String)>) -> Result<Self> {
+        let temp = tempfile::tempdir()?;
+        let runtime_dir = temp.path().join("runtime");
+        let config_home = temp.path().join("config");
+        let home = temp.path().join("home");
+        fs::create_dir_all(&runtime_dir)?;
+        fs::create_dir_all(&config_home)?;
+        fs::create_dir_all(&home)?;
+
+        let bread_cfg = config_home.join("bread");
+        fs::create_dir_all(bread_cfg.join("modules"))?;
+
+        fs::write(
+            bread_cfg.join("init.lua"),
+            "bread.on('bread.system.startup', function() end)\n",
+        )?;
+
+        fs::write(
+            bread_cfg.join("breadd.toml"),
+            r#"
+[daemon]
+log_level = "error"
+
+[lua]
+entry_point = "~/.config/bread/init.lua"
+module_path = "~/.config/bread/modules"
+
+[adapters.hyprland]
+enabled = false
+
+[adapters.udev]
+enabled = false
+
+[adapters.power]
+enabled = false
+
+[adapters.network]
+enabled = false
+"#,
+        )?;
+
+        if let Some((machine, remote_url)) = sync_config {
+            let sync_toml = format!(
+                r#"
+[remote]
+url = "{remote_url}"
+branch = "main"
+
+[machine]
+name = "{machine}"
+tags = []
+"#
+            );
+            fs::write(bread_cfg.join("sync.toml"), sync_toml)?;
+        }
+
+        let socket_path = runtime_dir.join("bread").join("breadd.sock");
+        let child = Command::new(env!("CARGO_BIN_EXE_breadd"))
+            .env("XDG_RUNTIME_DIR", &runtime_dir)
+            .env("XDG_CONFIG_HOME", &config_home)
+            .env("HOME", &home)
+            .stdin(Stdio::null())
+            .stdout(Stdio::null())
+            .stderr(Stdio::null())
+            .spawn()?;
+
+        Ok(Self {
+            _temp: temp,
+            child,
+            socket_path,
+        })
+    }
+
+    fn socket_path(&self) -> &Path {
+        &self.socket_path
+    }
+
+    async fn wait_until_ready(&self) -> Result<()> {
+        let deadline = Instant::now() + Duration::from_secs(8);
+        while Instant::now() < deadline {
+            if self.socket_path.exists() {
+                let ping = self.send_request("ping", json!({})).await;
+                if ping.is_ok() {
+                    return Ok(());
+                }
+            }
+            sleep(Duration::from_millis(100)).await;
+        }
+
+        Err(anyhow!("daemon did not become ready in time"))
+    }
+
+    async fn send_request(&self, method: &str, params: Value) -> Result<Value> {
+        let stream = UnixStream::connect(self.socket_path()).await?;
+        let (read_half, mut write_half) = stream.into_split();
+
+        let req = json!({
+            "id": "1",
+            "method": method,
+            "params": params,
+        });
+        write_half
+            .write_all(format!("{}\n", serde_json::to_string(&req)?).as_bytes())
+            .await?;
+
+        let mut lines = BufReader::new(read_half).lines();
+        let line = lines
+            .next_line()
+            .await?
+            .ok_or_else(|| anyhow!("missing ipc response"))?;
+        let parsed: Value = serde_json::from_str(&line)?;
+
+        if let Some(err) = parsed.get("error").and_then(Value::as_str) {
+            return Err(anyhow!(err.to_string()));
+        }
+
+        Ok(parsed.get("result").cloned().unwrap_or_else(|| json!({})))
+    }
+
+    fn shutdown(mut self) {
+        let _ = self.child.kill();
+        let _ = self.child.wait();
+    }
+}

packaging/README.md

@@ -0,0 +1,47 @@
+Packaging
+=========
+
+This directory contains distribution packaging for Bread.
+
+```
+packaging/
+├── arch/
+│   └── PKGBUILD          ← Arch Linux package build script
+└── systemd/
+    └── breadd.service    ← systemd user service unit
+```
+
+## Arch Linux
+
+```bash
+cd packaging/arch
+makepkg -si
+```
+
+The PKGBUILD builds both `breadd` and `bread` from source and installs them to `/usr/bin`. It also installs the systemd user service unit to `/usr/lib/systemd/user/`.
+
+Before publishing to the AUR, update `pkgver`, `source`, and `sha256sums` to point at a tagged release tarball.
+
+## systemd user service
+
+The service unit starts `breadd` as a user service after the graphical session is available.
+
+```bash
+# Install and enable manually (if not using the PKGBUILD)
+mkdir -p ~/.config/systemd/user
+cp systemd/breadd.service ~/.config/systemd/user/
+systemctl --user daemon-reload
+systemctl --user enable --now breadd
+
+# Check status
+systemctl --user status breadd
+journalctl --user -u breadd -f
+```
+
+The service sets `RUST_LOG=info` by default. To increase verbosity, override it in a drop-in:
+
+```ini
+# ~/.config/systemd/user/breadd.service.d/debug.conf
+[Service]
+Environment=RUST_LOG=debug
+```

packaging/arch/PKGBUILD

@@ -0,0 +1,36 @@
+# Maintainer: Breadway <rileyhorsham@gmail.com>
+
+pkgname=bread
+pkgver=1.0.0
+pkgrel=1
+pkgdesc="A reactive automation fabric for Linux desktops"
+arch=('x86_64')
+url="https://github.com/Breadway/bread"
+license=('MIT')
+depends=('glibc' 'libgit2')
+optdepends=(
+  'libnotify: desktop notifications via bread.notify()'
+  'upower: D-Bus battery events (sysfs polling used otherwise)'
+  'git: bread sync push/pull operations'
+)
+makedepends=('rust' 'cargo')
+source=("${pkgname}-${pkgver}.tar.gz")
+sha256sums=('SKIP')
+
+build() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  cargo build --release --locked
+}
+
+check() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  cargo test --release --locked --workspace
+}
+
+package() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  install -Dm755 target/release/breadd "${pkgdir}/usr/bin/breadd"
+  install -Dm755 target/release/bread  "${pkgdir}/usr/bin/bread"
+  install -Dm644 packaging/systemd/breadd.service "${pkgdir}/usr/lib/systemd/user/breadd.service"
+  install -Dm644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
+}

packaging/arch/README.md

@@ -0,0 +1,29 @@
+Arch packaging
+==============
+
+`PKGBUILD` builds and installs both `breadd` and `bread` from source.
+
+## Local build
+
+```bash
+makepkg -si
+```
+
+## Before publishing to AUR
+
+1. Tag a release on GitHub.
+2. Update `pkgver` to match the tag.
+3. Update `source` to the release tarball URL.
+4. Run `updpkgsums` (or manually set `sha256sums`).
+5. Update `url` if the repository has moved.
+6. Set `depends` accurately — at minimum: `glibc`. Add `udev` and `libgit2` if not linking statically.
+
+## Runtime dependencies
+
+| Package | Required | Notes |
+|---------|----------|-------|
+| `glibc` | yes | always |
+| `udev` | yes | device events |
+| `dbus` | optional | UPower battery events |
+| `libnotify` | optional | `bread.notify()` (uses `notify-send`) |
+| `git` | optional | `bread sync` push/pull |

packaging/systemd/breadd.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=Bread Runtime Daemon
+After=graphical-session.target
+Wants=graphical-session.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/breadd
+Restart=on-failure
+RestartSec=2
+UMask=0077
+RuntimeDirectory=bread
+RuntimeDirectoryMode=0700
+KillSignal=SIGTERM
+TimeoutStopSec=5
+Environment=RUST_LOG=info
+
+[Install]
+WantedBy=default.target

scripts/install.sh

@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+BIN_DIR="${BIN_DIR:-$HOME/.local/bin}"
+SERVICE_DIR="${HOME}/.config/systemd/user"
+CONFIG_DIR="${HOME}/.config/bread"
+MODULES_DIR="${CONFIG_DIR}/modules"
+
+# ── build ──────────────────────────────────────────────────────────────────────
+echo "building bread (release)..."
+cargo build --release --manifest-path "$REPO_ROOT/Cargo.toml"
+echo ""
+
+# ── symlinks ───────────────────────────────────────────────────────────────────
+echo "symlinking binaries into $BIN_DIR..."
+mkdir -p "$BIN_DIR"
+ln -sf "$REPO_ROOT/target/release/breadd" "$BIN_DIR/breadd"
+ln -sf "$REPO_ROOT/target/release/bread"  "$BIN_DIR/bread"
+echo "  $BIN_DIR/breadd -> $REPO_ROOT/target/release/breadd"
+echo "  $BIN_DIR/bread  -> $REPO_ROOT/target/release/bread"
+
+if [[ ":$PATH:" != *":$BIN_DIR:"* ]]; then
+    echo ""
+    echo "  note: $BIN_DIR is not in PATH — add to your shell profile:"
+    echo "    export PATH=\"\$HOME/.local/bin:\$PATH\""
+fi
+echo ""
+
+# ── config ─────────────────────────────────────────────────────────────────────
+echo "setting up config..."
+mkdir -p "$CONFIG_DIR" "$MODULES_DIR"
+
+if [[ ! -f "$CONFIG_DIR/breadd.toml" ]]; then
+    cat > "$CONFIG_DIR/breadd.toml" << 'EOF'
+[daemon]
+log_level = "info"
+
+[lua]
+entry_point = "~/.config/bread/init.lua"
+module_path  = "~/.config/bread/modules"
+
+[adapters.hyprland]
+enabled = true
+
+[adapters.udev]
+enabled = true
+
+[adapters.power]
+enabled = true
+
+[adapters.network]
+enabled = true
+EOF
+    echo "  created $CONFIG_DIR/breadd.toml"
+else
+    echo "  $CONFIG_DIR/breadd.toml already exists, skipping"
+fi
+
+if [[ ! -f "$CONFIG_DIR/init.lua" ]]; then
+    cat > "$CONFIG_DIR/init.lua" << 'EOF'
+-- bread init.lua — loaded before modules, use for global setup
+bread.log("bread started")
+EOF
+    echo "  created $CONFIG_DIR/init.lua"
+else
+    echo "  $CONFIG_DIR/init.lua already exists, skipping"
+fi
+echo ""
+
+# ── systemd user service ───────────────────────────────────────────────────────
+echo "installing systemd user service..."
+mkdir -p "$SERVICE_DIR"
+# Patch ExecStart to match the actual install location rather than hardcoding /usr/bin.
+sed "s|ExecStart=.*|ExecStart=$BIN_DIR/breadd|" \
+    "$REPO_ROOT/packaging/systemd/breadd.service" \
+    > "$SERVICE_DIR/breadd.service"
+echo "  installed $SERVICE_DIR/breadd.service (ExecStart=$BIN_DIR/breadd)"
+
+systemctl --user daemon-reload
+
+if systemctl --user is-active --quiet breadd 2>/dev/null; then
+    systemctl --user restart breadd
+    echo "  breadd restarted"
+else
+    systemctl --user enable --now breadd
+    echo "  breadd enabled and started"
+fi
+echo ""
+
+# ── verify ─────────────────────────────────────────────────────────────────────
+# Wait up to ~5s for the daemon to come up. Polling beats a fixed sleep
+# because a freshly enabled systemd unit can take a variable amount of time
+# to fork, bind the socket, and become ready.
+ready=0
+for _ in $(seq 1 25); do
+    if "$BIN_DIR/bread" ping &>/dev/null; then
+        ready=1
+        break
+    fi
+    sleep 0.2
+done
+
+if [[ "$ready" -eq 1 ]]; then
+    "$BIN_DIR/bread" doctor
+else
+    echo "warning: daemon did not respond to ping within 5s"
+    echo "  check: journalctl --user -u breadd -n 20"
+fi