Scaffold BOS repo: dotfiles, ISO profile, and bos-settings GTK4 app

Implements all four components from the BOS spec:
- dotfiles/: default Hyprland, bread, breadbox, breadcrumbs configs
- iso/: archiso profiledef, package list, Calamares YAML modules, post-install.sh
- bos-settings/: Cargo workspace with GTK4 settings app (8 views: snapshots,
  packages, bread, breadbar, breadbox, breadcrumbs, breadpad, hyprland)

https://claude.ai/code/session_01WszGHvCmxgcyTwNSkfLF9P

bos-settings/src/config/mod.rs

@@ -0,0 +1,24 @@
+use std::error::Error;
+use std::path::Path;
+
+pub fn load<T: for<'de> serde::Deserialize<'de>>(path: &Path) -> Result<T, Box<dyn Error>> {
+    let text = std::fs::read_to_string(path)?;
+    Ok(toml::from_str(&text)?)
+}
+
+pub fn save<T: serde::Serialize>(path: &Path, val: &T) -> Result<(), Box<dyn Error>> {
+    if let Some(parent) = path.parent() {
+        std::fs::create_dir_all(parent)?;
+    }
+    std::fs::write(path, toml::to_string_pretty(val)?)?;
+    Ok(())
+}
+
+pub fn config_dir() -> std::path::PathBuf {
+    dirs_path()
+}
+
+fn dirs_path() -> std::path::PathBuf {
+    let home = std::env::var("HOME").unwrap_or_else(|_| "/root".to_string());
+    std::path::PathBuf::from(home).join(".config")
+}

bos-settings/src/main.rs

@@ -0,0 +1,12 @@
+mod config;
+mod state;
+mod theme;
+mod ui;
+
+fn main() {
+    let app = gtk4::Application::builder()
+        .application_id("com.breadway.bos-settings")
+        .build();
+    app.connect_activate(ui::window::build_ui);
+    app.run();
+}

bos-settings/src/state.rs

@@ -0,0 +1,11 @@
+pub struct AppState {
+    pub current_view: String,
+}
+
+impl AppState {
+    pub fn new() -> Self {
+        Self {
+            current_view: "snapshots".to_string(),
+        }
+    }
+}

bos-settings/src/theme.rs

@@ -0,0 +1,88 @@
+use gtk4::prelude::*;
+use gtk4::CssProvider;
+
+const CSS: &str = r#"
+window {
+    background-color: #2e3440;
+    color: #eceff4;
+}
+
+.sidebar {
+    background-color: #3b4252;
+    border-right: 1px solid #434c5e;
+}
+
+.sidebar row {
+    padding: 8px 12px;
+    color: #d8dee9;
+}
+
+.sidebar row:selected {
+    background-color: #5e81ac;
+    color: #eceff4;
+}
+
+.sidebar .section-header {
+    padding: 12px 12px 4px 12px;
+    font-size: 0.75em;
+    font-weight: bold;
+    color: #616e88;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.view-content {
+    padding: 24px;
+}
+
+.view-content label.title {
+    font-size: 1.4em;
+    font-weight: bold;
+    color: #eceff4;
+    margin-bottom: 16px;
+}
+
+button {
+    background-color: #5e81ac;
+    color: #eceff4;
+    border: none;
+    border-radius: 4px;
+    padding: 6px 16px;
+}
+
+button:hover {
+    background-color: #81a1c1;
+}
+
+button.destructive-action {
+    background-color: #bf616a;
+}
+
+button.destructive-action:hover {
+    background-color: #d08770;
+}
+
+entry {
+    background-color: #434c5e;
+    color: #eceff4;
+    border: 1px solid #4c566a;
+    border-radius: 4px;
+}
+
+textview {
+    background-color: #272c36;
+    color: #a3be8c;
+    font-family: monospace;
+    padding: 8px;
+}
+"#;
+
+pub fn load(display: &gtk4::gdk::Display) {
+    let provider = CssProvider::new();
+    provider.load_from_string(CSS);
+    gtk4::style_context_add_provider_for_display(
+        display,
+        &provider,
+        gtk4::STYLE_PROVIDER_PRIORITY_APPLICATION,
+    );
+}

bos-settings/src/ui/mod.rs

@@ -0,0 +1,3 @@
+pub mod sidebar;
+pub mod views;
+pub mod window;

bos-settings/src/ui/sidebar.rs

@@ -0,0 +1,66 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Label, ListBox, ListBoxRow, Orientation, Separator};
+
+pub struct SidebarItem {
+    pub id: &'static str,
+    pub label: &'static str,
+}
+
+pub const APPS_ITEMS: &[SidebarItem] = &[
+    SidebarItem { id: "bread", label: "bread" },
+    SidebarItem { id: "breadbar", label: "breadbar" },
+    SidebarItem { id: "breadbox", label: "breadbox" },
+    SidebarItem { id: "breadcrumbs", label: "breadcrumbs" },
+    SidebarItem { id: "breadpad", label: "breadpad" },
+];
+
+pub const SYSTEM_ITEMS: &[SidebarItem] = &[
+    SidebarItem { id: "snapshots", label: "Snapshots" },
+    SidebarItem { id: "packages", label: "Packages" },
+    SidebarItem { id: "hyprland", label: "Hyprland" },
+];
+
+pub fn build() -> (GBox, ListBox) {
+    let vbox = GBox::new(Orientation::Vertical, 0);
+    vbox.add_css_class("sidebar");
+    vbox.set_width_request(190);
+
+    let list = ListBox::new();
+    list.set_selection_mode(gtk4::SelectionMode::Single);
+    list.add_css_class("sidebar");
+
+    append_section(&list, "Apps", APPS_ITEMS);
+    append_section(&list, "System", SYSTEM_ITEMS);
+
+    // Select first item by default
+    if let Some(first) = list.row_at_index(1) {
+        list.select_row(Some(&first));
+    }
+
+    vbox.append(&list);
+    (vbox, list)
+}
+
+fn append_section(list: &ListBox, title: &str, items: &[SidebarItem]) {
+    // Section header (non-selectable)
+    let header_row = ListBoxRow::new();
+    header_row.set_selectable(false);
+    header_row.set_activatable(false);
+    let header_lbl = Label::new(Some(title));
+    header_lbl.add_css_class("section-header");
+    header_lbl.set_xalign(0.0);
+    header_row.set_child(Some(&header_lbl));
+    list.append(&header_row);
+
+    for item in items {
+        let row = ListBoxRow::new();
+        row.set_widget_name(item.id);
+
+        let lbl = Label::new(Some(item.label));
+        lbl.set_xalign(0.0);
+        lbl.set_margin_top(2);
+        lbl.set_margin_bottom(2);
+        row.set_child(Some(&lbl));
+        list.append(&row);
+    }
+}

bos-settings/src/ui/views/bread.rs

@@ -0,0 +1,149 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, DropDown, Label, Orientation, StringList, Switch};
+use serde::{Deserialize, Serialize};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use crate::config;
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct BreadConfig {
+    #[serde(default = "default_log_level")]
+    pub log_level: String,
+    #[serde(default)]
+    pub adapters: AdaptersConfig,
+}
+
+fn default_log_level() -> String {
+    "info".to_string()
+}
+
+#[derive(Deserialize, Serialize, Clone, Default)]
+pub struct AdaptersConfig {
+    #[serde(default = "default_true")]
+    pub keyboard: bool,
+    #[serde(default = "default_true")]
+    pub mouse: bool,
+    #[serde(default = "default_true")]
+    pub touchpad: bool,
+    #[serde(default = "default_true")]
+    pub bluetooth: bool,
+    #[serde(default = "default_true")]
+    pub gamepad: bool,
+}
+
+fn default_true() -> bool {
+    true
+}
+
+impl Default for BreadConfig {
+    fn default() -> Self {
+        Self {
+            log_level: default_log_level(),
+            adapters: AdaptersConfig::default(),
+        }
+    }
+}
+
+fn config_path() -> std::path::PathBuf {
+    config::config_dir().join("bread/breadd.toml")
+}
+
+fn adapter_row(label: &str, active: bool, cfg: Rc<RefCell<BreadConfig>>, field: &'static str) -> GBox {
+    let row = GBox::new(Orientation::Horizontal, 16);
+    let lbl = Label::new(Some(label));
+    lbl.set_hexpand(true);
+    lbl.set_xalign(0.0);
+    let sw = Switch::new();
+    sw.set_active(active);
+    sw.connect_active_notify(move |s| {
+        let val = s.is_active();
+        let mut c = cfg.borrow_mut();
+        match field {
+            "keyboard" => c.adapters.keyboard = val,
+            "mouse" => c.adapters.mouse = val,
+            "touchpad" => c.adapters.touchpad = val,
+            "bluetooth" => c.adapters.bluetooth = val,
+            "gamepad" => c.adapters.gamepad = val,
+            _ => {}
+        }
+    });
+    row.append(&lbl);
+    row.append(&sw);
+    row
+}
+
+pub fn build() -> GBox {
+    let path = config_path();
+    let cfg: BreadConfig = config::load(&path).unwrap_or_default();
+    let cfg = Rc::new(RefCell::new(cfg));
+
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("bread"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    // Log level
+    let row = GBox::new(Orientation::Horizontal, 16);
+    row.set_margin_bottom(8);
+    let lbl = Label::new(Some("Log level"));
+    lbl.set_hexpand(true);
+    lbl.set_xalign(0.0);
+    let levels = StringList::new(&["error", "warn", "info", "debug", "trace"]);
+    let dropdown = DropDown::new(Some(levels), gtk4::Expression::NONE);
+    let current_pos = match cfg.borrow().log_level.as_str() {
+        "error" => 0u32,
+        "warn" => 1,
+        "info" => 2,
+        "debug" => 3,
+        "trace" => 4,
+        _ => 2,
+    };
+    dropdown.set_selected(current_pos);
+    {
+        let cfg = cfg.clone();
+        dropdown.connect_selected_notify(move |dd| {
+            let levels = ["error", "warn", "info", "debug", "trace"];
+            if let Some(&level) = levels.get(dd.selected() as usize) {
+                cfg.borrow_mut().log_level = level.to_string();
+            }
+        });
+    }
+    row.append(&lbl);
+    row.append(&dropdown);
+    vbox.append(&row);
+
+    // Adapter toggles
+    let adapter_label = Label::new(Some("Adapters"));
+    adapter_label.set_xalign(0.0);
+    adapter_label.set_margin_top(8);
+    adapter_label.set_margin_bottom(4);
+    vbox.append(&adapter_label);
+
+    let (kbd, mouse, touchpad, bluetooth, gamepad) = {
+        let c = cfg.borrow();
+        (c.adapters.keyboard, c.adapters.mouse, c.adapters.touchpad, c.adapters.bluetooth, c.adapters.gamepad)
+    };
+
+    vbox.append(&adapter_row("Keyboard", kbd, cfg.clone(), "keyboard"));
+    vbox.append(&adapter_row("Mouse", mouse, cfg.clone(), "mouse"));
+    vbox.append(&adapter_row("Touchpad", touchpad, cfg.clone(), "touchpad"));
+    vbox.append(&adapter_row("Bluetooth", bluetooth, cfg.clone(), "bluetooth"));
+    vbox.append(&adapter_row("Gamepad", gamepad, cfg.clone(), "gamepad"));
+
+    let save_btn = Button::with_label("Save");
+    save_btn.set_margin_top(16);
+    save_btn.set_halign(gtk4::Align::Start);
+    {
+        let cfg = cfg.clone();
+        save_btn.connect_clicked(move |_| {
+            let _ = config::save(&path, &*cfg.borrow());
+        });
+    }
+    vbox.append(&save_btn);
+
+    vbox
+}

bos-settings/src/ui/views/breadbar.rs

@@ -0,0 +1,58 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, Label, Orientation, ScrolledWindow, TextView};
+use std::path::PathBuf;
+
+fn css_path() -> PathBuf {
+    let home = std::env::var("HOME").unwrap_or_else(|_| "/root".to_string());
+    PathBuf::from(home).join(".config/breadbar/style.css")
+}
+
+pub fn build() -> GBox {
+    let path = css_path();
+    let existing_css = std::fs::read_to_string(&path).unwrap_or_default();
+
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("breadbar"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    let subtitle = Label::new(Some(
+        "CSS overrides for breadbar. Leave empty to use the default bread theme.",
+    ));
+    subtitle.set_xalign(0.0);
+    subtitle.set_margin_bottom(8);
+    subtitle.set_wrap(true);
+    vbox.append(&subtitle);
+
+    let buf = gtk4::TextBuffer::new(None);
+    buf.set_text(&existing_css);
+
+    let text_view = TextView::with_buffer(&buf);
+    text_view.set_monospace(true);
+
+    let scroll = ScrolledWindow::new();
+    scroll.set_vexpand(true);
+    scroll.set_child(Some(&text_view));
+    vbox.append(&scroll);
+
+    let save_btn = Button::with_label("Save");
+    save_btn.set_margin_top(12);
+    save_btn.set_halign(gtk4::Align::Start);
+    {
+        let path = path.clone();
+        save_btn.connect_clicked(move |_| {
+            let (start, end) = buf.bounds();
+            let text = buf.text(&start, &end, false);
+            if let Some(parent) = path.parent() {
+                let _ = std::fs::create_dir_all(parent);
+            }
+            let _ = std::fs::write(&path, text.as_str());
+        });
+    }
+    vbox.append(&save_btn);
+
+    vbox
+}

bos-settings/src/ui/views/breadbox.rs

@@ -0,0 +1,134 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, Entry, Label, ListBox, ListBoxRow, Orientation, ScrolledWindow};
+use serde::{Deserialize, Serialize};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use crate::config;
+
+#[derive(Deserialize, Serialize, Clone, Default)]
+pub struct BreadboxConfig {
+    #[serde(default)]
+    pub context: Vec<Context>,
+}
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct Context {
+    pub name: String,
+    #[serde(default)]
+    pub apps: Vec<String>,
+}
+
+fn config_path() -> std::path::PathBuf {
+    config::config_dir().join("breadbox/config.toml")
+}
+
+fn rebuild_list(list: &ListBox, cfg: &Rc<RefCell<BreadboxConfig>>) {
+    while let Some(child) = list.first_child() {
+        list.remove(&child);
+    }
+    for (i, ctx) in cfg.borrow().context.iter().enumerate() {
+        let row = ListBoxRow::new();
+        let hbox = GBox::new(Orientation::Horizontal, 8);
+        hbox.set_margin_top(6);
+        hbox.set_margin_bottom(6);
+        hbox.set_margin_start(8);
+        hbox.set_margin_end(8);
+
+        let name_entry = Entry::new();
+        name_entry.set_text(&ctx.name);
+        name_entry.set_width_chars(16);
+
+        let apps_entry = Entry::new();
+        apps_entry.set_text(&ctx.apps.join(", "));
+        apps_entry.set_hexpand(true);
+        apps_entry.set_placeholder_text(Some("app1, app2, ..."));
+
+        {
+            let cfg = cfg.clone();
+            name_entry.connect_changed(move |e| {
+                if let Some(c) = cfg.borrow_mut().context.get_mut(i) {
+                    c.name = e.text().to_string();
+                }
+            });
+        }
+        {
+            let cfg = cfg.clone();
+            apps_entry.connect_changed(move |e| {
+                if let Some(c) = cfg.borrow_mut().context.get_mut(i) {
+                    c.apps = e
+                        .text()
+                        .split(',')
+                        .map(|s| s.trim().to_string())
+                        .filter(|s| !s.is_empty())
+                        .collect();
+                }
+            });
+        }
+
+        hbox.append(&name_entry);
+        hbox.append(&apps_entry);
+        row.set_child(Some(&hbox));
+        list.append(&row);
+    }
+}
+
+pub fn build() -> GBox {
+    let path = config_path();
+    let cfg: BreadboxConfig = config::load(&path).unwrap_or_default();
+    let cfg = Rc::new(RefCell::new(cfg));
+
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("breadbox"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    let subtitle = Label::new(Some("Context priority lists — apps shown in each context."));
+    subtitle.set_xalign(0.0);
+    subtitle.set_margin_bottom(8);
+    vbox.append(&subtitle);
+
+    let list = ListBox::new();
+    list.set_selection_mode(gtk4::SelectionMode::None);
+
+    rebuild_list(&list, &cfg);
+
+    let scroll = ScrolledWindow::new();
+    scroll.set_vexpand(true);
+    scroll.set_child(Some(&list));
+    vbox.append(&scroll);
+
+    let btn_row = GBox::new(Orientation::Horizontal, 8);
+    btn_row.set_margin_top(8);
+
+    let add_btn = Button::with_label("Add context");
+    {
+        let cfg = cfg.clone();
+        let list = list.clone();
+        add_btn.connect_clicked(move |_| {
+            cfg.borrow_mut().context.push(Context {
+                name: "new".to_string(),
+                apps: Vec::new(),
+            });
+            rebuild_list(&list, &cfg);
+        });
+    }
+
+    let save_btn = Button::with_label("Save");
+    {
+        let cfg = cfg.clone();
+        let path = path.clone();
+        save_btn.connect_clicked(move |_| {
+            let _ = config::save(&path, &*cfg.borrow());
+        });
+    }
+
+    btn_row.append(&add_btn);
+    btn_row.append(&save_btn);
+    vbox.append(&btn_row);
+
+    vbox
+}

bos-settings/src/ui/views/breadcrumbs.rs

@@ -0,0 +1,134 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, Entry, Label, ListBox, ListBoxRow, Orientation, ScrolledWindow};
+use serde::{Deserialize, Serialize};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use crate::config;
+
+#[derive(Deserialize, Serialize, Clone, Default)]
+pub struct BreadcrumbsConfig {
+    #[serde(default)]
+    pub profile: Vec<Profile>,
+}
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct Profile {
+    pub name: String,
+    #[serde(default)]
+    pub ssids: Vec<String>,
+}
+
+fn config_path() -> std::path::PathBuf {
+    config::config_dir().join("breadcrumbs/breadcrumbs.toml")
+}
+
+fn rebuild_list(list: &ListBox, cfg: &Rc<RefCell<BreadcrumbsConfig>>) {
+    while let Some(child) = list.first_child() {
+        list.remove(&child);
+    }
+    for (i, profile) in cfg.borrow().profile.iter().enumerate() {
+        let row = ListBoxRow::new();
+        let hbox = GBox::new(Orientation::Horizontal, 8);
+        hbox.set_margin_top(6);
+        hbox.set_margin_bottom(6);
+        hbox.set_margin_start(8);
+        hbox.set_margin_end(8);
+
+        let name_entry = Entry::new();
+        name_entry.set_text(&profile.name);
+        name_entry.set_width_chars(16);
+
+        let ssids_entry = Entry::new();
+        ssids_entry.set_text(&profile.ssids.join(", "));
+        ssids_entry.set_hexpand(true);
+        ssids_entry.set_placeholder_text(Some("SSID1, SSID2, ..."));
+
+        {
+            let cfg = cfg.clone();
+            name_entry.connect_changed(move |e| {
+                if let Some(p) = cfg.borrow_mut().profile.get_mut(i) {
+                    p.name = e.text().to_string();
+                }
+            });
+        }
+        {
+            let cfg = cfg.clone();
+            ssids_entry.connect_changed(move |e| {
+                if let Some(p) = cfg.borrow_mut().profile.get_mut(i) {
+                    p.ssids = e
+                        .text()
+                        .split(',')
+                        .map(|s| s.trim().to_string())
+                        .filter(|s| !s.is_empty())
+                        .collect();
+                }
+            });
+        }
+
+        hbox.append(&name_entry);
+        hbox.append(&ssids_entry);
+        row.set_child(Some(&hbox));
+        list.append(&row);
+    }
+}
+
+pub fn build() -> GBox {
+    let path = config_path();
+    let cfg: BreadcrumbsConfig = config::load(&path).unwrap_or_default();
+    let cfg = Rc::new(RefCell::new(cfg));
+
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("breadcrumbs"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    let subtitle = Label::new(Some("Network profiles — SSIDs associated with each location."));
+    subtitle.set_xalign(0.0);
+    subtitle.set_margin_bottom(8);
+    vbox.append(&subtitle);
+
+    let list = ListBox::new();
+    list.set_selection_mode(gtk4::SelectionMode::None);
+
+    rebuild_list(&list, &cfg);
+
+    let scroll = ScrolledWindow::new();
+    scroll.set_vexpand(true);
+    scroll.set_child(Some(&list));
+    vbox.append(&scroll);
+
+    let btn_row = GBox::new(Orientation::Horizontal, 8);
+    btn_row.set_margin_top(8);
+
+    let add_btn = Button::with_label("Add profile");
+    {
+        let cfg = cfg.clone();
+        let list = list.clone();
+        add_btn.connect_clicked(move |_| {
+            cfg.borrow_mut().profile.push(Profile {
+                name: "new".to_string(),
+                ssids: Vec::new(),
+            });
+            rebuild_list(&list, &cfg);
+        });
+    }
+
+    let save_btn = Button::with_label("Save");
+    {
+        let cfg = cfg.clone();
+        let path = path.clone();
+        save_btn.connect_clicked(move |_| {
+            let _ = config::save(&path, &*cfg.borrow());
+        });
+    }
+
+    btn_row.append(&add_btn);
+    btn_row.append(&save_btn);
+    vbox.append(&btn_row);
+
+    vbox
+}

bos-settings/src/ui/views/breadpad.rs

@@ -0,0 +1,118 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, Entry, Label, Orientation, Switch};
+use serde::{Deserialize, Serialize};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use crate::config;
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct BreadpadConfig {
+    #[serde(default = "default_model")]
+    pub model: String,
+    #[serde(default = "default_true")]
+    pub reminders: bool,
+    #[serde(default = "default_true")]
+    pub calendar: bool,
+}
+
+fn default_model() -> String {
+    "claude-sonnet-4-6".to_string()
+}
+
+fn default_true() -> bool {
+    true
+}
+
+impl Default for BreadpadConfig {
+    fn default() -> Self {
+        Self {
+            model: default_model(),
+            reminders: true,
+            calendar: true,
+        }
+    }
+}
+
+fn config_path() -> std::path::PathBuf {
+    config::config_dir().join("breadpad/breadpad.toml")
+}
+
+pub fn build() -> GBox {
+    let path = config_path();
+    let cfg: BreadpadConfig = config::load(&path).unwrap_or_default();
+    let cfg = Rc::new(RefCell::new(cfg));
+
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("breadpad"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    // Model entry
+    let row = GBox::new(Orientation::Horizontal, 16);
+    let lbl = Label::new(Some("Model"));
+    lbl.set_hexpand(true);
+    lbl.set_xalign(0.0);
+    let model_entry = Entry::new();
+    model_entry.set_text(&cfg.borrow().model);
+    {
+        let cfg = cfg.clone();
+        model_entry.connect_changed(move |e| {
+            cfg.borrow_mut().model = e.text().to_string();
+        });
+    }
+    row.append(&lbl);
+    row.append(&model_entry);
+    vbox.append(&row);
+
+    // Reminders toggle
+    let row = GBox::new(Orientation::Horizontal, 16);
+    let lbl = Label::new(Some("Reminders"));
+    lbl.set_hexpand(true);
+    lbl.set_xalign(0.0);
+    let sw = Switch::new();
+    sw.set_active(cfg.borrow().reminders);
+    {
+        let cfg = cfg.clone();
+        sw.connect_active_notify(move |s| {
+            cfg.borrow_mut().reminders = s.is_active();
+        });
+    }
+    row.append(&lbl);
+    row.append(&sw);
+    vbox.append(&row);
+
+    // Calendar toggle
+    let row = GBox::new(Orientation::Horizontal, 16);
+    let lbl = Label::new(Some("Calendar integration"));
+    lbl.set_hexpand(true);
+    lbl.set_xalign(0.0);
+    let sw = Switch::new();
+    sw.set_active(cfg.borrow().calendar);
+    {
+        let cfg = cfg.clone();
+        sw.connect_active_notify(move |s| {
+            cfg.borrow_mut().calendar = s.is_active();
+        });
+    }
+    row.append(&lbl);
+    row.append(&sw);
+    vbox.append(&row);
+
+    let save_btn = Button::with_label("Save");
+    save_btn.set_margin_top(16);
+    save_btn.set_halign(gtk4::Align::Start);
+    {
+        let cfg = cfg.clone();
+        let path = path.clone();
+        save_btn.connect_clicked(move |_| {
+            let _ = config::save(&path, &*cfg.borrow());
+        });
+    }
+    vbox.append(&save_btn);
+
+    vbox
+}

bos-settings/src/ui/views/hyprland.rs

@@ -0,0 +1,92 @@
+use gtk4::prelude::*;
+use gtk4::{Box as GBox, Button, Label, Orientation};
+use std::process::Command;
+
+fn get_monitors() -> Vec<String> {
+    let Ok(output) = Command::new("hyprctl").args(["monitors", "-j"]).output() else {
+        return Vec::new();
+    };
+    let text = String::from_utf8_lossy(&output.stdout);
+    let Ok(monitors) = serde_json::from_str::<Vec<serde_json::Value>>(&text) else {
+        return Vec::new();
+    };
+    monitors
+        .iter()
+        .filter_map(|m| {
+            let name = m.get("name")?.as_str()?;
+            let w = m.get("width")?.as_u64()?;
+            let h = m.get("height")?.as_u64()?;
+            let refresh = m.get("refreshRate")?.as_f64()?;
+            Some(format!("{name}  {w}×{h} @ {refresh:.0}Hz"))
+        })
+        .collect()
+}
+
+fn config_path() -> std::path::PathBuf {
+    let home = std::env::var("HOME").unwrap_or_else(|_| "/root".to_string());
+    std::path::PathBuf::from(home).join(".config/hypr/hyprland.conf")
+}
+
+pub fn build() -> GBox {
+    let vbox = GBox::new(Orientation::Vertical, 12);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("Hyprland"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    // Monitors section
+    let monitors_lbl = Label::new(Some("Connected monitors"));
+    monitors_lbl.set_xalign(0.0);
+    monitors_lbl.set_margin_top(8);
+    monitors_lbl.set_margin_bottom(4);
+    vbox.append(&monitors_lbl);
+
+    let monitors = get_monitors();
+    if monitors.is_empty() {
+        let lbl = Label::new(Some("No monitors detected (is Hyprland running?)"));
+        lbl.set_xalign(0.0);
+        vbox.append(&lbl);
+    } else {
+        for mon in &monitors {
+            let lbl = Label::new(Some(mon));
+            lbl.set_xalign(0.0);
+            lbl.add_css_class("monospace");
+            vbox.append(&lbl);
+        }
+    }
+
+    // Open config button
+    let open_btn = Button::with_label("Open hyprland.conf in editor");
+    open_btn.set_margin_top(16);
+    open_btn.set_halign(gtk4::Align::Start);
+    {
+        let path = config_path();
+        open_btn.connect_clicked(move |_| {
+            let editor = std::env::var("EDITOR").unwrap_or_else(|_| "foot".to_string());
+            let _ = Command::new(&editor)
+                .arg(path.to_str().unwrap_or(""))
+                .spawn();
+        });
+    }
+    vbox.append(&open_btn);
+
+    // Open keybinds button
+    let keybinds_btn = Button::with_label("Open keybinds.conf in editor");
+    keybinds_btn.set_margin_top(8);
+    keybinds_btn.set_halign(gtk4::Align::Start);
+    {
+        let home = std::env::var("HOME").unwrap_or_else(|_| "/root".to_string());
+        let kb_path = std::path::PathBuf::from(home).join(".config/hypr/keybinds.conf");
+        keybinds_btn.connect_clicked(move |_| {
+            let editor = std::env::var("EDITOR").unwrap_or_else(|_| "foot".to_string());
+            let _ = Command::new(&editor)
+                .arg(kb_path.to_str().unwrap_or(""))
+                .spawn();
+        });
+    }
+    vbox.append(&keybinds_btn);
+
+    vbox
+}

bos-settings/src/ui/views/mod.rs

@@ -0,0 +1,8 @@
+pub mod bread;
+pub mod breadbar;
+pub mod breadbox;
+pub mod breadcrumbs;
+pub mod breadpad;
+pub mod hyprland;
+pub mod packages;
+pub mod snapshots;

bos-settings/src/ui/views/packages.rs

@@ -0,0 +1,171 @@
+use gtk4::prelude::*;
+use gtk4::{
+    Box as GBox, Button, Label, ListBox, ListBoxRow, Orientation, ScrolledWindow, TextView,
+};
+use serde::Deserialize;
+use std::collections::HashMap;
+use std::process::Command;
+
+#[derive(Deserialize, Default)]
+struct InstalledPackages {
+    #[serde(flatten)]
+    packages: HashMap<String, PackageInfo>,
+}
+
+#[derive(Deserialize)]
+struct PackageInfo {
+    version: String,
+}
+
+fn read_installed() -> HashMap<String, String> {
+    let home = std::env::var("HOME").unwrap_or_else(|_| "/root".to_string());
+    let path = std::path::Path::new(&home)
+        .join(".local/state/bakery/installed.json");
+
+    let Ok(text) = std::fs::read_to_string(&path) else {
+        return HashMap::new();
+    };
+
+    let Ok(parsed) = serde_json::from_str::<HashMap<String, serde_json::Value>>(&text) else {
+        return HashMap::new();
+    };
+
+    parsed
+        .into_iter()
+        .filter_map(|(name, val)| {
+            let version = val
+                .get("version")
+                .or_else(|| val.as_str().map(|_| &val))
+                .and_then(|v| v.as_str())
+                .map(|s| s.to_string())
+                .unwrap_or_else(|| "unknown".to_string());
+            Some((name, version))
+        })
+        .collect()
+}
+
+pub fn build() -> GBox {
+    let vbox = GBox::new(Orientation::Vertical, 0);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("Packages"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    let subtitle = Label::new(Some("Bread ecosystem packages installed via bakery."));
+    subtitle.set_xalign(0.0);
+    subtitle.set_margin_bottom(16);
+    vbox.append(&subtitle);
+
+    let list = ListBox::new();
+    list.set_selection_mode(gtk4::SelectionMode::None);
+
+    let packages = read_installed();
+    if packages.is_empty() {
+        let row = ListBoxRow::new();
+        let lbl = Label::new(Some("No bakery packages found (~/.local/state/bakery/installed.json)"));
+        lbl.set_margin_top(8);
+        lbl.set_margin_bottom(8);
+        lbl.set_margin_start(8);
+        row.set_child(Some(&lbl));
+        list.append(&row);
+    } else {
+        let mut names: Vec<_> = packages.iter().collect();
+        names.sort_by_key(|(k, _)| k.as_str());
+        for (name, version) in names {
+            let row = ListBoxRow::new();
+            let hbox = GBox::new(Orientation::Horizontal, 16);
+            hbox.set_margin_top(6);
+            hbox.set_margin_bottom(6);
+            hbox.set_margin_start(8);
+            hbox.set_margin_end(8);
+
+            let name_lbl = Label::new(Some(name));
+            name_lbl.set_hexpand(true);
+            name_lbl.set_xalign(0.0);
+
+            let ver_lbl = Label::new(Some(version));
+            ver_lbl.set_xalign(1.0);
+
+            let update_btn = Button::with_label("Update");
+            let pkg_name = name.clone();
+            update_btn.connect_clicked(move |_| {
+                let _ = Command::new("bakery")
+                    .args(["update", &pkg_name])
+                    .spawn();
+            });
+
+            hbox.append(&name_lbl);
+            hbox.append(&ver_lbl);
+            hbox.append(&update_btn);
+            row.set_child(Some(&hbox));
+            list.append(&row);
+        }
+    }
+
+    let scroll = ScrolledWindow::new();
+    scroll.set_vexpand(true);
+    scroll.set_child(Some(&list));
+    vbox.append(&scroll);
+
+    let btn_row = GBox::new(Orientation::Horizontal, 8);
+    btn_row.set_margin_top(12);
+
+    let check_btn = Button::with_label("Check for updates");
+    let update_all_btn = Button::with_label("Update all");
+
+    let log_buf = gtk4::TextBuffer::new(None);
+    let log_view = TextView::with_buffer(&log_buf);
+    log_view.set_editable(false);
+    log_view.set_height_request(120);
+    log_view.set_margin_top(8);
+
+    {
+        let log_buf = log_buf.clone();
+        check_btn.connect_clicked(move |_| {
+            log_buf.set_text("Checking for updates...\n");
+            match Command::new("bakery").args(["list"]).output() {
+                Ok(out) => {
+                    let text = String::from_utf8_lossy(&out.stdout);
+                    log_buf.set_text(&format!("{text}\n"));
+                }
+                Err(e) => {
+                    log_buf.set_text(&format!("Error: {e}\n"));
+                }
+            }
+        });
+    }
+
+    {
+        let log_buf = log_buf.clone();
+        update_all_btn.connect_clicked(move |_| {
+            log_buf.set_text("Running bakery update --all...\n");
+            let (sender, receiver) = glib::MainContext::channel(glib::Priority::DEFAULT);
+            std::thread::spawn(move || {
+                let result = Command::new("bakery")
+                    .args(["update", "--all"])
+                    .output();
+                match result {
+                    Ok(out) => {
+                        let _ = sender.send(String::from_utf8_lossy(&out.stdout).to_string());
+                    }
+                    Err(e) => {
+                        let _ = sender.send(format!("Error: {e}\n"));
+                    }
+                }
+            });
+            receiver.attach(None, move |msg| {
+                log_buf.set_text(&msg);
+                glib::ControlFlow::Break
+            });
+        });
+    }
+
+    btn_row.append(&check_btn);
+    btn_row.append(&update_all_btn);
+    vbox.append(&btn_row);
+    vbox.append(&log_view);
+
+    vbox
+}

bos-settings/src/ui/views/snapshots.rs

@@ -0,0 +1,167 @@
+use gtk4::prelude::*;
+use gtk4::{
+    Box as GBox, Button, Label, ListBox, ListBoxRow, MessageDialog, Orientation, ScrolledWindow,
+};
+use std::process::Command;
+
+struct SnapshotRow {
+    number: String,
+    date: String,
+    description: String,
+}
+
+fn list_snapshots() -> Vec<SnapshotRow> {
+    let Ok(output) = Command::new("snapper")
+        .args(["list", "--output-cols", "number,date,description"])
+        .output()
+    else {
+        return Vec::new();
+    };
+
+    let text = String::from_utf8_lossy(&output.stdout);
+    text.lines()
+        .skip(2) // header + separator
+        .filter_map(|line| {
+            let cols: Vec<&str> = line.splitn(3, '|').collect();
+            if cols.len() == 3 {
+                Some(SnapshotRow {
+                    number: cols[0].trim().to_string(),
+                    date: cols[1].trim().to_string(),
+                    description: cols[2].trim().to_string(),
+                })
+            } else {
+                None
+            }
+        })
+        .collect()
+}
+
+fn confirm_rollback(number: &str) {
+    let number = number.to_string();
+    let dialog = MessageDialog::new(
+        None::<&gtk4::Window>,
+        gtk4::DialogFlags::MODAL,
+        gtk4::MessageType::Question,
+        gtk4::ButtonsType::OkCancel,
+        &format!("Roll back to snapshot #{number}?\n\nReboot required to apply."),
+    );
+    dialog.connect_response(move |d, resp| {
+        if resp == gtk4::ResponseType::Ok {
+            let _ = Command::new("snapper")
+                .args(["rollback", &number])
+                .status();
+            let info = MessageDialog::new(
+                None::<&gtk4::Window>,
+                gtk4::DialogFlags::MODAL,
+                gtk4::MessageType::Info,
+                gtk4::ButtonsType::Ok,
+                "Rollback queued. Please reboot to apply.",
+            );
+            info.connect_response(|d, _| d.destroy());
+            info.present();
+        }
+        d.destroy();
+    });
+    dialog.present();
+}
+
+pub fn build() -> GBox {
+    let vbox = GBox::new(Orientation::Vertical, 0);
+    vbox.add_css_class("view-content");
+
+    let title = Label::new(Some("Snapshots"));
+    title.add_css_class("title");
+    title.set_xalign(0.0);
+    vbox.append(&title);
+
+    let subtitle =
+        Label::new(Some("System snapshots created by snap-pac on each pacman transaction."));
+    subtitle.set_xalign(0.0);
+    subtitle.set_margin_bottom(16);
+    vbox.append(&subtitle);
+
+    let list = ListBox::new();
+    list.set_selection_mode(gtk4::SelectionMode::Single);
+
+    let snapshots = list_snapshots();
+    if snapshots.is_empty() {
+        let row = ListBoxRow::new();
+        let lbl = Label::new(Some(
+            "No snapshots found (snapper may not be configured yet)",
+        ));
+        lbl.set_margin_top(8);
+        lbl.set_margin_bottom(8);
+        lbl.set_margin_start(8);
+        row.set_child(Some(&lbl));
+        list.append(&row);
+    } else {
+        for snap in &snapshots {
+            let row = ListBoxRow::new();
+            row.set_widget_name(&snap.number);
+
+            let hbox = GBox::new(Orientation::Horizontal, 16);
+            hbox.set_margin_top(6);
+            hbox.set_margin_bottom(6);
+            hbox.set_margin_start(8);
+            hbox.set_margin_end(8);
+
+            let num_lbl = Label::new(Some(&snap.number));
+            num_lbl.set_width_chars(4);
+            num_lbl.set_xalign(0.0);
+
+            let date_lbl = Label::new(Some(&snap.date));
+            date_lbl.set_width_chars(22);
+            date_lbl.set_xalign(0.0);
+
+            let desc_lbl = Label::new(Some(&snap.description));
+            desc_lbl.set_hexpand(true);
+            desc_lbl.set_xalign(0.0);
+
+            hbox.append(&num_lbl);
+            hbox.append(&date_lbl);
+            hbox.append(&desc_lbl);
+            row.set_child(Some(&hbox));
+            list.append(&row);
+        }
+    }
+
+    let scroll = ScrolledWindow::new();
+    scroll.set_vexpand(true);
+    scroll.set_child(Some(&list));
+    vbox.append(&scroll);
+
+    let btn_row = GBox::new(Orientation::Horizontal, 8);
+    btn_row.set_margin_top(12);
+
+    let rollback_btn = Button::with_label("Rollback to selected");
+    let delete_btn = Button::with_label("Delete selected");
+    delete_btn.add_css_class("destructive-action");
+
+    {
+        let list = list.clone();
+        rollback_btn.connect_clicked(move |_| {
+            let Some(row) = list.selected_row() else {
+                return;
+            };
+            let number = row.widget_name().to_string();
+            confirm_rollback(&number);
+        });
+    }
+
+    {
+        let list = list.clone();
+        delete_btn.connect_clicked(move |_| {
+            let Some(row) = list.selected_row() else {
+                return;
+            };
+            let number = row.widget_name().to_string();
+            let _ = Command::new("snapper").args(["delete", &number]).status();
+        });
+    }
+
+    btn_row.append(&rollback_btn);
+    btn_row.append(&delete_btn);
+    vbox.append(&btn_row);
+
+    vbox
+}

bos-settings/src/ui/window.rs

@@ -0,0 +1,57 @@
+use gtk4::prelude::*;
+use gtk4::{Application, ApplicationWindow, Box as GBox, Orientation, Paned, Stack};
+
+use super::sidebar;
+use super::views;
+
+pub fn build_ui(app: &Application) {
+    let window = ApplicationWindow::builder()
+        .application(app)
+        .title("BOS Settings")
+        .default_width(960)
+        .default_height(640)
+        .build();
+
+    crate::theme::load(&window.display());
+
+    let hpaned = Paned::new(Orientation::Horizontal);
+    hpaned.set_position(190);
+    hpaned.set_shrink_start_child(false);
+    hpaned.set_resize_start_child(false);
+
+    let (sidebar_box, list) = sidebar::build();
+
+    let stack = Stack::new();
+    stack.set_hexpand(true);
+    stack.set_vexpand(true);
+
+    stack.add_named(&views::snapshots::build(), Some("snapshots"));
+    stack.add_named(&views::packages::build(), Some("packages"));
+    stack.add_named(&views::bread::build(), Some("bread"));
+    stack.add_named(&views::breadbar::build(), Some("breadbar"));
+    stack.add_named(&views::breadbox::build(), Some("breadbox"));
+    stack.add_named(&views::breadcrumbs::build(), Some("breadcrumbs"));
+    stack.add_named(&views::breadpad::build(), Some("breadpad"));
+    stack.add_named(&views::hyprland::build(), Some("hyprland"));
+
+    // Default to snapshots view
+    stack.set_visible_child_name("snapshots");
+
+    {
+        let stack = stack.clone();
+        list.connect_row_selected(move |_, row| {
+            if let Some(row) = row {
+                let name = row.widget_name();
+                if !name.is_empty() {
+                    stack.set_visible_child_name(&name);
+                }
+            }
+        });
+    }
+
+    hpaned.set_start_child(Some(&sidebar_box));
+    hpaned.set_end_child(Some(&stack));
+
+    window.set_child(Some(&hpaned));
+    window.present();
+}