Prepare repo for public GitHub release

Add README, MIT LICENSE, expanded .gitignore, and updated SVG icon set
to make the repository presentable for open-source publication.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

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+# breadbar
+
+Minimal status bar and notification daemon for [Hyprland](https://hyprland.org/) on Wayland.
+
+A single Rust binary that provides a full-width top bar and a standards-compliant D-Bus notification daemon, with no system tray, no launcher, and no wallpaper logic.
+
+## Features
+
+**Status bar** (anchored to the top of every monitor via `gtk4-layer-shell`):
+
+- Left: live workspace buttons sourced from Hyprland IPC, active workspace highlighted
+- Centre: clock (`HH:MM`, updates at the top of each minute)
+- Right: CPU%, RAM, power draw (W), battery level + AC indicator, Bluetooth state, WiFi SSID with signal strength
+
+**Notification daemon**:
+
+- Implements `org.freedesktop.Notifications` (D-Bus) — works with any standard notification sender (`notify-send`, etc.)
+- Popups appear top-right, stack vertically, auto-dismiss after the sender-specified timeout (default 5 s)
+- Supports `CloseNotification`
+
+**Theming**:
+
+- Reads `~/.cache/wal/colors.json` (pywal) on startup for a palette that matches your wallpaper
+- Falls back to a Catppuccin Mocha palette if pywal is not present
+- User CSS override: `~/.config/breadbar/style.css`
+- Send `SIGHUP` to reload the theme at runtime (integrates with wallpaper-change hooks)
+
+## Dependencies
+
+Runtime:
+
+- GTK4 (≥ 4.12)
+- `gtk4-layer-shell`
+- `iw` — for WiFi SSID/signal (`iw dev <iface> link`)
+- A running Hyprland compositor
+- D-Bus session bus
+
+Bluetooth status is read from `/sys/class/rfkill` and BlueZ D-Bus; it degrades gracefully if unavailable.
+
+## Building
+
+```sh
+cargo build --release
+```
+
+The binary is at `target/release/breadbar`.
+
+Requirements: Rust 1.77+ (uses `LazyLock`), a GTK4 development environment (`libgtk-4-dev` / `gtk4` package).
+
+On Arch Linux:
+
+```sh
+sudo pacman -S gtk4 gtk4-layer-shell iw
+cargo build --release
+```
+
+## Running
+
+```sh
+./target/release/breadbar
+```
+
+Typically launched from your Hyprland config:
+
+```
+exec-once = /path/to/breadbar
+```
+
+breadbar claims `org.freedesktop.Notifications` on the session D-Bus on startup. If another notification daemon is already running, startup will fail — stop the other daemon first.
+
+## Theming
+
+### pywal integration
+
+breadbar reads `~/.cache/wal/colors.json` automatically. To reload after a wallpaper change:
+
+```sh
+pkill -HUP breadbar
+```
+
+Or hook it into your wallpaper script:
+
+```sh
+wal -i /path/to/wallpaper.jpg
+pkill -HUP breadbar
+```
+
+### Custom CSS
+
+Drop a `~/.config/breadbar/style.css` file and send `SIGHUP` to reload. This CSS is applied at a higher priority than the pywal palette so you can override anything.
+
+Example — change the font size:
+
+```css
+* {
+    font-size: 13px;
+}
+```
+
+## Architecture
+
+| Module | Responsibility |
+|---|---|
+| `src/main.rs` | GTK4 app entry point, widget tree, `relm4` component |
+| `src/bar/workspaces.rs` | Hyprland IPC event stream, workspace buttons |
+| `src/bar/clock.rs` | Minute-tick clock |
+| `src/bar/stats.rs` | Polling loop: CPU, RAM, power, battery, Bluetooth, WiFi |
+| `src/notifications/mod.rs` | `org.freedesktop.Notifications` zbus service |
+| `src/notifications/popup.rs` | Layer-shell popup window and card stack |
+| `src/theme.rs` | pywal reader, GTK CSS provider injection |
+
+Stats are polled every 2 seconds. Bluetooth and WiFi are sampled every 16 seconds and cached in between to avoid hammering D-Bus and `iw`.
+
+## License
+
+MIT