Make settings restore crash-safe

Records how to add a setting -- one schema entry -- and the failure
modes found building the pages. Every one of them fails silently rather
than loudly, which is why they are worth writing down: a wrong readAs
makes successful writes look rejected, hyprpaper accepts an all-outputs
wallpaper request and ignores it, and a copy of the Quickshell config
shares the live shell's ID so an "isolated" harness can kill the running
desktop.

Also documents the two generated configurations and why they are
generated: ~/.config/hypr is a symlink into this repository, so writing
there at runtime would commit machine state to a tracked file.

Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L

config/dot/hypr/README.md

@@ -44,6 +44,30 @@ Validate any change without leaving your session:
 Hyprland --verify-config
 ```
 
+## Generated configuration
+
+Two ecosystem tools cannot read the shared settings file, and their configs live
+in this directory — which is a symlink into the Panama repository, so writing to
+them at runtime would put machine state into a tracked file. Both are therefore
+generated elsewhere:
+
+| Tool | Generated to | Pointed there by |
+|---|---|---|
+| `hypridle` | `$XDG_STATE_HOME/panama/hypridle.conf` | a systemd user drop-in installed by `panama-idle install` |
+| `hyprpaper` | not generated — the wallpaper is applied over IPC and re-applied at shell start | — |
+
+`quickshell/scripts/panama-idle` regenerates the hypridle config from the
+settings store and restarts the daemon. `hypridle.conf` in this directory
+remains the shipped default and is what runs when the drop-in is not installed;
+Panama Settings shows which of the two states you are in rather than presenting
+controls that quietly do nothing.
+
+Remove the drop-in and go back to the shipped config with:
+
+```sh
+~/.config/quickshell/scripts/panama-idle remove
+```
+
 ## Settings: one file, both sides
 
 `~/.config/panama/settings.json` is shared with the Quickshell side. The
@@ -67,6 +91,29 @@ wrong-typed settings file costs you your customisations and nothing else;
 `tests/hypr/prefs-fallback-contract.sh` pins that, including that Hyprland still
 accepts the config in each of those states.
 
+### Adding a keybind: use `bind`, not `hl.bind`
+
+Every bind in `keybinds.lua` goes through a local `bind()` wrapper that
+substitutes the chord from a stored override, so shortcuts can be moved from
+Panama Settings without editing this file.
+
+```lua
+bind(mod .. " + Q", hl.dsp.window.close(), { description = "Close window" })
+```
+
+Only the **chord** is ever taken from settings — the action is always the Lua
+value written here. A stored override can therefore move a shortcut but can
+never make one do something else, which is what makes reading overrides from a
+file the user can edit safe.
+
+Overrides are keyed by the **shipped chord**, not the description. Descriptions
+are not unique: "Calculator" is both `SUPER + C` and the `XF86Calculator`
+hardware key, and keying by description moved both onto the same new chord,
+silently costing the hardware key.
+
+An override whose value is not a plausible chord is ignored in favour of the
+shipped one, so a hand-edited `settings.json` cannot cost you a keymap.
+
 ### Keybind descriptions are required
 
 Every `hl.bind` must pass a `description`. Hyprland reports Lua-defined binds

config/dot/quickshell/config/HomePreferences.qml

@@ -82,6 +82,14 @@ Singleton {
         values.initialized = true;
     }
 
+    function resetHomeDefaults(): void {
+        persistTimer.stop();
+        values.favorites = [];
+        values.initialized = false;
+        root.saveError = "";
+        preferencesFile.writeAdapter();
+    }
+
     function isSelected(entityId: string): bool {
         for (var index = 0; index < values.favorites.length; index++) {
             if (values.favorites[index].id === entityId) {

config/dot/quickshell/config/Settings.qml

@@ -28,13 +28,13 @@ Singleton {
     // label deliberately general rather than exposing precise coordinates in
     // the UI or guessing at a city from them.
     readonly property string weatherLocation: "Local weather"
-    readonly property string temperatureUnit: "fahrenheit"
-    readonly property int weatherRefreshMinutes: 20
+    readonly property string temperatureUnit: DesktopPreferences.get("temperatureUnit")
+    readonly property int weatherRefreshMinutes: DesktopPreferences.get("weatherRefreshMinutes")
 
     // ── Vitals ──────────────────────────────────────────────────────────────
     // The GNOME Vitals extension showed processor usage, memory usage and GPU
     // usage, in that order. Same here.
-    readonly property int vitalsIntervalMs: 2000
+    readonly property int vitalsIntervalMs: DesktopPreferences.get("vitalsIntervalMs")
     readonly property bool showCpu: DesktopPreferences.get("showCpu")
     readonly property bool showMemory: DesktopPreferences.get("showMemory")
     readonly property bool showGpu: DesktopPreferences.get("showGpu")
@@ -51,10 +51,10 @@ Singleton {
     readonly property bool nightLightEnabledByDefault: DesktopPreferences.get("nightLightEnabled")
 
     // ── Notifications ───────────────────────────────────────────────────────
-    readonly property int notificationTimeoutMs: 5000
-    readonly property int notificationTimeoutCriticalMs: 0 // 0 = never auto-expire
-    readonly property int notificationHistoryLimit: 100
-    readonly property int maxVisibleToasts: 4
+    readonly property int notificationTimeoutMs: DesktopPreferences.get("notificationTimeoutMs")
+    readonly property int notificationTimeoutCriticalMs: DesktopPreferences.get("notificationTimeoutCriticalMs") // 0 = never auto-expire
+    readonly property int notificationHistoryLimit: DesktopPreferences.get("notificationHistoryLimit")
+    readonly property int maxVisibleToasts: DesktopPreferences.get("maxVisibleToasts")
 
     // ── Focus ──────────────────────────────────────────────────────────────
     // One deliberate default rather than a preset picker: quick settings and
@@ -79,9 +79,9 @@ Singleton {
     readonly property int dockHideDelayMs: DesktopPreferences.get("dockHideDelayMs")
 
     // ── Capture ─────────────────────────────────────────────────────────────
-    readonly property string screenshotDir: "Pictures/Screenshots"
-    readonly property string recordingDir: "Videos/Recordings"
+    readonly property string screenshotDir: DesktopPreferences.get("screenshotDir")
+    readonly property string recordingDir: DesktopPreferences.get("recordingDir")
     // Passed to wf-recorder. Uses VAAPI on the AMD card so recording does not
     // cost CPU while gaming.
-    readonly property string recorderArgs: "-c h264_vaapi -d /dev/dri/renderD128"
+    readonly property string recorderArgs: DesktopPreferences.get("recorderArgs")
 }

config/dot/quickshell/home-preferences-harness.qml

@@ -13,6 +13,7 @@ ShellRoot {
         function alias(id: string, value: string): void { HomePreferences.setAlias(id, value); }
         function move(id: string, index: int): void { HomePreferences.move(id, index); }
         function remove(id: string): void { HomePreferences.remove(id); }
+        function reset(): void { HomePreferences.resetHomeDefaults(); }
         function status(): string {
             return JSON.stringify({
                 initialized: HomePreferences.initialized,

config/dot/quickshell/keybinds-harness.qml

@@ -13,9 +13,16 @@ ShellRoot {
             return Keybinds.rebind(current, next);
         }
 
-        function resetBind(current: string): void { Keybinds.resetBind(current); }
+        function resetBind(current: string): bool { return Keybinds.resetBind(current); }
         function resetAll(): void { Keybinds.resetAll(); }
 
+        function seedResetCollision(shipped: string, current: string, occupantShipped: string): void {
+            const overrides = {};
+            overrides[shipped] = current;
+            overrides[occupantShipped] = shipped;
+            DesktopPreferences.set("keybindOverrides", overrides);
+        }
+
         function chordFor(description: string): string {
             const found = Keybinds.binds.find(bind => bind.description === description);
             return found ? found.luaChord : "";
@@ -24,7 +31,8 @@ ShellRoot {
         function overrideState(): string {
             return JSON.stringify({
                 overrides: Keybinds.overrides,
-                count: Object.keys(Keybinds.overrides).length
+                count: Object.keys(Keybinds.overrides).length,
+                lastError: Keybinds.lastError
             });
         }
 

config/dot/quickshell/modules/settings/AboutPage.qml

@@ -3,39 +3,49 @@ import Quickshell
 import qs.config
 import qs.services
 
-Item {
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text { text: "About Panama"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-            Text { text: "A curated Hyprland desktop built around focus, speed, and good taste."; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
+SettingsPage {
+    title: "About Panama"
+    lede: "A curated Hyprland desktop built around focus, speed, and good taste."
 
     SettingsCard {
         title: "Panama Desktop"
         subtitle: "Tokyo Night Moon · Prism glass · native tiling"
-                SettingRow { label: "Hyprland"; value: SystemSettings.hyprlandVersion || "Detecting…" }
-                SettingRow { label: "Quickshell"; value: SystemSettings.quickshellVersion }
-                SettingRow { label: "Display"; value: SystemSettings.monitorName || "Detecting…" }
-                SettingRow { label: "Configuration"; detail: Quickshell.shellDir; value: "Local"; divider: false }
+
+        TextRow {
+            label: "Hyprland"
+            value: SystemSettings.hyprlandVersion || "Detecting…"
+        }
+        TextRow {
+            label: "Quickshell"
+            value: SystemSettings.quickshellVersion
+        }
+        TextRow {
+            label: "Display"
+            value: SystemSettings.monitorName || "Detecting…"
+        }
+        TextRow {
+            label: "Configuration"
+            detail: Quickshell.shellDir
+            value: "Local"
+            divider: false
+        }
     }
 
     SettingsCard {
         title: "Design principles"
-                SettingRow { label: "Curated by default"; detail: "Strong choices instead of an incoherent matrix of switches" }
-                SettingRow { label: "Quiet while idle"; detail: "No continuous decorative repaint loops" }
-                SettingRow { label: "Real system boundaries"; detail: "Every control either works or clearly hands off to its owner"; divider: false }
+
+        TextRow {
+            label: "Curated by default"
+            detail: "Strong choices instead of an incoherent matrix of switches"
         }
+        TextRow {
+            label: "Quiet while idle"
+            detail: "No continuous decorative repaint loops"
+        }
+        TextRow {
+            label: "Real system boundaries"
+            detail: "Every control either works or clearly hands off to its owner"
+            divider: false
         }
     }
 }

config/dot/quickshell/modules/settings/ApplicationsPage.qml

@@ -1,19 +1,217 @@
-// Applications — PLACEHOLDER.
-//
-// Owned by the codex agent, which is building default-application handling and
-// the autostart list. This stub exists only so the page id can be routed,
-// registered, and searchable before that work lands; it is expected to be
-// replaced wholesale rather than edited.
+// Applications and session startup.
 
+import Quickshell
 import QtQuick
-import qs.config
+import qs.services
 
 SettingsPage {
+    id: root
+
+    objectName: "applications"
     title: "Applications"
-    lede: "Default applications and what starts with your session."
+    lede: "Choose what opens your files and links, and what starts with your session."
+
+    property string expandedRole: ""
+    readonly property var applications: DesktopEntries.applications.values
+    readonly property var roles: [
+        { key: "browser", label: "Browser", detail: "Web links and HTML pages", categorySets: [["webbrowser"]], terms: ["web browser", "browser"] },
+        { key: "mail", label: "Mail", detail: "Email links", categorySets: [["email"]], terms: ["mail client", "email client"] },
+        { key: "files", label: "Files", detail: "Folders and file locations", categorySets: [["filemanager"]], terms: ["file manager"] },
+        { key: "terminal", label: "Terminal", detail: "Terminal links and command-line handoffs", categorySets: [["terminalemulator"]], terms: ["terminal emulator", "terminal"] },
+        { key: "music", label: "Music", detail: "MP3 audio", categorySets: [["music"], ["audio", "player"]], terms: ["music player", "audio player"] },
+        { key: "images", label: "Images", detail: "PNG images", categorySets: [], terms: ["image viewer", "image editor", "photo viewer", "photo editor", "picture viewer"] },
+        { key: "video", label: "Video", detail: "MP4 video", categorySets: [["video"]], terms: ["video player", "movie player"] }
+    ]
+
+    function desktopId(entry: var): string {
+        const entryId = String(entry?.id ?? "");
+        return entryId.endsWith(".desktop") ? entryId : entryId + ".desktop";
+    }
+
+    function displayName(entry: var): string {
+        return String(entry?.name || entry?.genericName || root.desktopId(entry));
+    }
+
+    function currentHandler(role: string): string {
+        return String(DefaultApps.handlers[role] ?? "");
+    }
+
+    function currentEntry(role: string): var {
+        const handler = root.currentHandler(role);
+        return root.applications.find(entry => root.desktopId(entry) === handler) ?? null;
+    }
+
+    function matchesRole(entry: var, role: var): bool {
+        const rawCategories = Array.isArray(entry.categories)
+            ? entry.categories
+            : [String(entry.categories ?? "")];
+        const categories = [];
+        for (const rawCategory of rawCategories) {
+            for (const value of String(rawCategory).split(";")) {
+                const category = value.trim().toLowerCase();
+                if (category !== "")
+                    categories.push(category);
+            }
+        }
+        const metadata = [entry.name, entry.genericName]
+            .map(value => String(value ?? "").toLowerCase())
+            .join(" ");
+        return role.categorySets.some(set => set.every(category => categories.includes(category)))
+            || role.terms.some(term => metadata.includes(term));
+    }
+
+    function choicesForRole(role: var): var {
+        const choices = root.applications.filter(entry => root.matchesRole(entry, role));
+        const currentEntry = root.currentEntry(role.key);
+        if (currentEntry && !choices.some(entry => root.desktopId(entry) === root.desktopId(currentEntry)))
+            choices.push(currentEntry);
+        return choices.sort((left, right) => root.displayName(left).localeCompare(root.displayName(right)));
+    }
+
+    TextRow {
+        visible: DefaultApps.lastError !== ""
+        label: "Application settings need attention"
+        detail: DefaultApps.lastError
+        value: ""
+        divider: false
+    }
 
     SettingsCard {
-        title: "Being built"
-        subtitle: "Default browser, mail, files, and terminal, plus the autostart list, are on their way."
+        title: "Default applications"
+        subtitle: "Open a row to choose from applications that advertise the matching role."
+
+        Repeater {
+            model: root.roles
+
+            delegate: Column {
+                id: roleBlock
+
+                required property var modelData
+                required property int index
+                readonly property var choices: root.choicesForRole(roleBlock.modelData)
+                readonly property var selectedEntry: root.currentEntry(roleBlock.modelData.key)
+
+                width: parent.width
+
+                SettingRow {
+                    label: roleBlock.modelData.label
+                    detail: roleBlock.modelData.detail
+                    value: DefaultApps.busy ? "Loading…" : (
+                        roleBlock.selectedEntry
+                            ? root.displayName(roleBlock.selectedEntry)
+                            : (root.currentHandler(roleBlock.modelData.key) || "Not set")
+                    )
+                    activatable: roleBlock.choices.length > 0 && !DefaultApps.busy
+                    divider: root.expandedRole !== roleBlock.modelData.key && roleBlock.index < root.roles.length - 1
+                    onActivated: {
+                        root.expandedRole = root.expandedRole === roleBlock.modelData.key
+                            ? ""
+                            : roleBlock.modelData.key;
+                    }
+                }
+
+                Column {
+                    width: parent.width
+                    visible: root.expandedRole === roleBlock.modelData.key
+
+                    Repeater {
+                        model: roleBlock.choices
+
+                        delegate: SettingRow {
+                            id: candidateRow
+
+                            required property var modelData
+                            required property int index
+
+                            readonly property string candidateId: root.desktopId(candidateRow.modelData)
+                            readonly property bool selected: candidateRow.candidateId === root.currentHandler(roleBlock.modelData.key)
+
+                            label: root.displayName(candidateRow.modelData)
+                            detail: String(candidateRow.modelData.genericName || candidateRow.modelData.comment || candidateRow.candidateId)
+                            value: candidateRow.selected ? "Current" : ""
+                            activatable: !candidateRow.selected && !DefaultApps.busy
+                            divider: candidateRow.index < roleBlock.choices.length - 1 || roleBlock.index < root.roles.length - 1
+                            onActivated: {
+                                DefaultApps.setDefault(roleBlock.modelData.key, candidateRow.candidateId);
+                                root.expandedRole = "";
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    SettingsCard {
+        title: "User autostart"
+        subtitle: "These desktop entries live in your user configuration. Select a row to toggle it."
+
+        TextRow {
+            visible: !DefaultApps.busy && DefaultApps.autostartEntries.length === 0
+            label: "No user autostart entries"
+            detail: "Applications can add entries to ~/.config/autostart."
+            value: ""
+            divider: false
+        }
+
+        Repeater {
+            model: DefaultApps.autostartEntries
+
+            delegate: SettingRow {
+                id: autostartRow
+
+                required property var modelData
+                required property int index
+
+                label: autostartRow.modelData.name
+                detail: autostartRow.modelData.id
+                value: autostartRow.modelData.enabled ? "Enabled" : "Disabled"
+                activatable: !DefaultApps.busy
+                divider: autostartRow.index < DefaultApps.autostartEntries.length - 1
+                onActivated: DefaultApps.setAutostart(autostartRow.modelData.id, !autostartRow.modelData.enabled)
+            }
+        }
+    }
+
+    SettingsCard {
+        title: "Compositor autostart"
+        subtitle: "Panama starts these from Hyprland configuration. They are read-only here."
+
+        TextRow {
+            visible: !DefaultApps.busy && DefaultApps.luaAutostartEntries.length === 0
+            label: "No compositor entries found"
+            detail: "No hl.exec_cmd entries were found in config/dot/hypr/autostart.lua."
+            value: ""
+            divider: false
+        }
+
+        Repeater {
+            model: DefaultApps.luaAutostartEntries
+
+            delegate: TextRow {
+                id: luaRow
+
+                required property var modelData
+                required property int index
+
+                label: luaRow.modelData.name
+                detail: luaRow.modelData.command
+                value: "Hyprland"
+                divider: luaRow.index < DefaultApps.luaAutostartEntries.length - 1
+            }
+        }
+    }
+
+    SettingsCard {
+        title: "Refresh"
+
+        ActionRow {
+            label: "Reload application settings"
+            detail: "Re-read desktop entries, defaults, and user autostart files"
+            action: DefaultApps.busy ? "Refreshing…" : "Refresh"
+            enabled: !DefaultApps.busy
+            divider: false
+            onTriggered: DefaultApps.refresh()
+        }
     }
 }

config/dot/quickshell/modules/settings/ConnectivityPage.qml

@@ -5,9 +5,12 @@ import qs.config
 import qs.services
 import qs.modules.quicksettings
 
-Item {
+SettingsPage {
     id: root
 
+    title: "Network & Devices"
+    lede: "Connect graphically—no terminal workflow required."
+
     readonly property var wifiDevice: {
         for (const device of Networking.devices.values) {
             if (device.type === DeviceType.Wifi)
@@ -17,30 +20,15 @@ Item {
     }
     readonly property var bluetoothAdapter: Bluetooth.defaultAdapter
 
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text { text: "Network & Devices"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-            Text { text: "Connect graphically—no terminal workflow required."; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
-
     SettingsCard {
         title: "Wi‑Fi"
         subtitle: Networking.wifiEnabled ? "Available networks" : "Wireless networking is off"
+
         SettingRow {
             label: "Wi‑Fi"
             detail: root.wifiDevice ? "Managed by NetworkManager" : "No wireless adapter found"
             controlWidth: 48
+
             SettingsToggle {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
@@ -49,40 +37,56 @@ Item {
                 onToggled: value => Networking.wifiEnabled = value
             }
         }
-                WifiList { width: parent.width; device: root.wifiDevice; active: true; maxHeight: 240 }
-                SettingRow {
+
+        WifiList {
+            width: parent.width
+            device: root.wifiDevice
+            active: true
+            maxHeight: 240
+        }
+
+        ActionRow {
             label: "Advanced network settings"
             detail: "VPN, wired profiles, DNS, and connection details"
             divider: false
-                    controlWidth: 104
-                    SettingsButton { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; text: "Open panel"; onClicked: SystemSettings.openGnomePanel("network") }
+            action: "Open panel"
+            onTriggered: SystemSettings.openGnomePanel("network")
         }
     }
 
     SettingsCard {
         title: "Bluetooth"
         subtitle: root.bluetoothAdapter?.enabled ? "Nearby and paired devices" : "Bluetooth is off"
+
         SettingRow {
             label: "Bluetooth"
             detail: root.bluetoothAdapter ? "Pair and reconnect without leaving Settings" : "No Bluetooth adapter found"
             controlWidth: 48
+
             SettingsToggle {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
                 checked: root.bluetoothAdapter?.enabled ?? false
                 enabled: root.bluetoothAdapter !== null
-                        onToggled: value => { if (root.bluetoothAdapter) root.bluetoothAdapter.enabled = value; }
+                onToggled: value => {
+                    if (root.bluetoothAdapter)
+                        root.bluetoothAdapter.enabled = value;
                 }
             }
-                BluetoothList { width: parent.width; active: true; maxHeight: 220 }
-                SettingRow {
+        }
+
+        BluetoothList {
+            width: parent.width
+            active: true
+            maxHeight: 220
+        }
+
+        ActionRow {
             label: "Advanced Bluetooth settings"
             detail: "Device details and system-level options"
             divider: false
-                    controlWidth: 104
-                    SettingsButton { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; text: "Open panel"; onClicked: SystemSettings.openGnomePanel("bluetooth") }
-                }
-            }
+            action: "Open panel"
+            onTriggered: SystemSettings.openGnomePanel("bluetooth")
         }
     }
 }

config/dot/quickshell/modules/settings/DisplaysPage.qml

@@ -3,29 +3,15 @@ import qs.config
 import qs.services
 import qs.widgets
 
-Item {
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text { text: "Displays"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-            Text { text: SystemSettings.monitorDescription || "Reading the active display…"; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
+SettingsPage {
+    title: "Displays"
+    lede: SystemSettings.monitorDescription || "Reading the active display…"
 
     SettingsCard {
         title: SystemSettings.monitorName || "Active display"
         subtitle: `${SystemSettings.monitorWidth} × ${SystemSettings.monitorHeight} at ${SystemSettings.monitorRefreshRate.toFixed(0)} Hz · ${SystemSettings.monitorScale.toFixed(1)}× scale · ${SystemSettings.monitorFormat}`
-                SettingRow { label: "Color mode"; detail: "Wide-gamut SDR desktop at 10-bit"; value: SystemSettings.colorPreset || "wide" }
-                SettingRow { label: "Variable refresh"; detail: SystemSettings.monitorVrrActive ? "Active for current fullscreen content" : "Ready when game or video content requests it"; value: SystemSettings.monitorVrrActive ? "Active" : "Standby"; divider: false }
+        TextRow { label: "Color mode"; detail: "Wide-gamut SDR desktop at 10-bit"; value: SystemSettings.colorPreset || "wide" }
+        TextRow { label: "Variable refresh"; detail: SystemSettings.monitorVrrActive ? "Active for current fullscreen content" : "Ready when game or video content requests it"; value: SystemSettings.monitorVrrActive ? "Active" : "Standby"; divider: false }
     }
 
     SettingsCard {
@@ -92,6 +78,4 @@ Item {
             wrapMode: Text.WordWrap
         }
     }
-        }
-    }
 }

config/dot/quickshell/modules/settings/HomePage.qml

@@ -2,54 +2,32 @@ import QtQuick
 import qs.config
 import qs.services
 
-Item {
+SettingsPage {
     id: root
 
     readonly property int openedHour: new Date().getHours()
     readonly property string greeting: openedHour < 12 ? "Good morning" : (openedHour < 18 ? "Good afternoon" : "Good evening")
 
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text {
-                text: `${root.greeting}, Gabriel`
-                color: Theme.fg
-                font.family: Theme.fontFamily
-                font.pixelSize: 27
-                font.weight: Font.DemiBold
-            }
-
-            Text {
-                text: "Your Panama desktop is configured and ready."
-                color: Theme.fgDim
-                font.family: Theme.fontFamily
-                font.pixelSize: Theme.fontSize
-                bottomPadding: 6
-            }
+    title: `${root.greeting}, Gabriel`
+    lede: "Your Panama desktop is configured and ready."
 
     SettingsCard {
         title: SystemSettings.monitorDescription || "Active display"
         subtitle: SystemSettings.monitorName || "Detecting your display…"
 
-                Row {
+        Grid {
+            id: monitorLayout
+
             width: parent.width
-                    height: 164
-                    spacing: 28
+            columns: width >= 620 ? 2 : 1
+            columnSpacing: 28
+            rowSpacing: 16
 
             Item {
-                        width: parent.width * 0.47
-                        height: parent.height
+                width: monitorLayout.columns === 2
+                    ? (monitorLayout.width - monitorLayout.columnSpacing) * 0.47
+                    : monitorLayout.width
+                height: 164
 
                 Rectangle {
                     width: Math.min(parent.width - 24, 260)
@@ -85,8 +63,10 @@ Item {
             }
 
             Column {
-                        width: parent.width * 0.47
-                        anchors.verticalCenter: parent.verticalCenter
+                width: monitorLayout.columns === 2
+                    ? (monitorLayout.width - monitorLayout.columnSpacing) * 0.47
+                    : monitorLayout.width
+                height: monitorLayout.columns === 2 ? 164 : implicitHeight
                 spacing: 13
 
                 Text {
@@ -120,12 +100,31 @@ Item {
         }
     }
 
-            Row {
-                width: parent.width
-                spacing: 16
+    SettingsCard {
+        title: "Weather"
+        subtitle: "Local conditions in the date menu"
+        ChoiceRow { setting: "temperatureUnit" }
+        SliderRow { setting: "weatherRefreshMinutes"; divider: false }
+    }
 
     SettingsCard {
-                    width: (parent.width - parent.spacing) / 2
+        title: "System vitals"
+        subtitle: "Processor, memory, and graphics activity in the bar"
+        SliderRow { setting: "vitalsIntervalMs"; divider: false }
+    }
+
+    Grid {
+        id: summaryCards
+
+        width: parent.width
+        columns: width >= 720 ? 2 : 1
+        columnSpacing: 16
+        rowSpacing: 16
+
+        SettingsCard {
+            width: summaryCards.columns === 2
+                ? (summaryCards.width - summaryCards.columnSpacing) / 2
+                : summaryCards.width
             title: "Quiet focus"
             subtitle: "Notifications and focused work"
 
@@ -144,11 +143,13 @@ Item {
         }
 
         SettingsCard {
-                    width: (parent.width - parent.spacing) / 2
+            width: summaryCards.columns === 2
+                ? (summaryCards.width - summaryCards.columnSpacing) / 2
+                : summaryCards.width
             title: "Desktop services"
             subtitle: "The essentials are running"
 
-                    SettingRow {
+            TextRow {
                 label: "Sync & remote access"
                 detail: `${SystemSettings.nextcloudActive ? "Nextcloud ready" : "Nextcloud stopped"} · ${SystemSettings.rustdeskActive ? "RustDesk ready" : "RustDesk stopped"}`
                 divider: false
@@ -156,6 +157,4 @@ Item {
             }
         }
     }
-        }
-    }
 }

config/dot/quickshell/modules/settings/HomePhonePage.qml

@@ -2,9 +2,11 @@ import QtQuick
 import qs.config
 import qs.services
 
-Item {
+SettingsPage {
     id: root
     objectName: "home-phone-page"
+    title: "Home & Phone"
+    lede: "Choose what appears in Control Center and keep phone continuity close at hand."
 
     property string lightQuery: searchInput.text.trim().toLowerCase()
 
@@ -41,36 +43,6 @@ Item {
         return "Home Assistant is unavailable";
     }
 
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text {
-                text: "Home & Phone"
-                color: Theme.fg
-                font.family: Theme.fontFamily
-                font.pixelSize: 27
-                font.weight: Font.DemiBold
-            }
-
-            Text {
-                text: "Choose what appears in Control Center and keep phone continuity close at hand."
-                color: Theme.fgDim
-                font.family: Theme.fontFamily
-                font.pixelSize: Theme.fontSize
-                bottomPadding: 6
-            }
-
     SettingsCard {
         title: "Home Assistant"
         subtitle: root.homeStatus()
@@ -311,6 +283,4 @@ Item {
             }
         }
     }
-        }
-    }
 }

config/dot/quickshell/modules/settings/NotificationsPage.qml

@@ -2,69 +2,90 @@ import QtQuick
 import qs.config
 import qs.services
 
-Item {
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text { text: "Notifications & Focus"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-            Text { text: "Control interruptions without losing useful history."; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
+SettingsPage {
+    title: "Notifications & Focus"
+    lede: "Control interruptions without losing useful history."
 
     SettingsCard {
         title: "Notifications"
+
         SettingRow {
             label: "Do Not Disturb"
             detail: "Keep notifications in the center but suppress banners"
             controlWidth: 48
-                    SettingsToggle { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; checked: Notifs.doNotDisturb; onToggled: value => Notifs.doNotDisturb = value }
+
+            SettingsToggle {
+                anchors.right: parent.right
+                anchors.verticalCenter: parent.verticalCenter
+                checked: Notifs.doNotDisturb
+                onToggled: value => Notifs.doNotDisturb = value
             }
-                SettingRow { label: "Notification history"; detail: "Live notifications retained by Panama"; value: `${Notifs.history.length} items` }
-                SettingRow {
+        }
+
+        TextRow {
+            label: "Notification history"
+            detail: "Live notifications retained by Panama"
+            value: `${Notifs.history.length} items`
+        }
+
+        ActionRow {
             label: "Clear notification history"
             detail: "Dismiss every item currently in the notification center"
             divider: false
-                    controlWidth: 94
-                    SettingsButton { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; text: "Clear all"; enabled: Notifs.history.length > 0; onClicked: Notifs.dismissAll() }
+            action: "Clear all"
+            enabled: Notifs.history.length > 0
+            onTriggered: Notifs.dismissAll()
         }
     }
 
+    SettingsCard {
+        title: "Banner behavior"
+
+        SliderRow { setting: "notificationTimeoutMs" }
+        SliderRow {
+            setting: "notificationTimeoutCriticalMs"
+            zeroLabel: "Never"
+        }
+        SliderRow { setting: "notificationHistoryLimit" }
+        SliderRow { setting: "maxVisibleToasts"; divider: false }
+    }
+
     SettingsCard {
         title: "Focus sessions"
         subtitle: "A focus session binds quiet mode and Caffeine to the current workspace."
+
         SettingRow {
+            id: durationRow
+
             label: "Default duration"
             detail: "Used by Super+Shift+F and Quick Settings"
             controlWidth: 264
+
             Row {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
                 spacing: 6
+
                 Repeater {
                     model: [25, 45, 60, 90]
+
                     SettingsButton {
                         required property int modelData
+
                         text: `${modelData}m`
                         tone: DesktopPreferences.get("focusDurationMinutes") === modelData ? "accent" : "normal"
-                                onClicked: DesktopPreferences.set("focusDurationMinutes", modelData)
+                        onClicked: SystemSettings.commitPreference("focusDurationMinutes", modelData)
                     }
                 }
             }
         }
+
         SettingRow {
             label: FocusSession.active ? `Active on ${FocusSession.workspaceLabel}` : "No active focus session"
             detail: FocusSession.active ? `${FocusSession.remainingText} remaining` : "Start one without leaving Settings"
             divider: false
             controlWidth: 120
+
             SettingsButton {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
@@ -74,6 +95,4 @@ Item {
             }
         }
     }
-        }
-    }
 }

config/dot/quickshell/modules/settings/README.md

@@ -0,0 +1,109 @@
+# Panama Settings
+
+The control centre for everything Panama owns. Anything the system owns —
+hardware, accounts, printers — is delegated to GNOME Settings and labelled as
+such rather than half-reimplemented.
+
+## Adding a setting
+
+One schema entry. That is the whole job.
+
+```qml
+// config/PreferenceSchema.qml
+{
+    key: "blurSize", type: "int", def: 8, min: 1, max: 20, step: 1,
+    unit: "px", group: "effects",
+    label: "Blur radius",
+    detail: "Larger is softer and costs more frame time",
+    hypr: { path: ["decoration", "blur", "size"], option: "decoration:blur:size", readAs: "int" }
+}
+```
+
+```qml
+// the page
+SliderRow { setting: "blurSize" }
+```
+
+Persistence, validation, clamping, reset, search indexing, and — with a `hypr`
+block — live application to the compositor and the startup replay all derive
+from that entry. There is nothing else to register.
+
+If it is compositor-backed, add the matching `prefs.get("blurSize", 8)` in
+`hypr/looks.lua` so the Hyprland config still stands alone with no settings
+file.
+
+## The rows
+
+| Component | For |
+|---|---|
+| `SettingsPage` | The page scaffold: title, lede, optional pinned `header` |
+| `ToggleRow { setting }` | A boolean |
+| `SliderRow { setting }` | A number; `zeroLabel` renders 0 as "Never"/"Instant"/"None" |
+| `ChoiceRow { setting }` | An enum, as a segmented control |
+| `ActionRow` | A button: opens a GNOME panel, runs a one-shot |
+| `TextRow` | A genuinely read-only fact |
+
+`TextRow` is for facts, not for settings that were merely expensive to wire.
+Before Stage 3 more than half of all rows were static text standing in for
+controls; that is the failure this vocabulary exists to prevent.
+
+Rows write through `SystemSettings.commitPreference(key, value)`, which routes
+compositor-backed keys through apply-and-verify and local keys straight to the
+store. A row never needs to know which kind it holds.
+
+## Things that will bite you
+
+**`readAs` describes the answer, not the setting.** `hyprctl getoption` returns
+the value in a different JSON field per type — `int`, `bool`, `float`, `str`,
+and `css` for gaps (a four-value box). Declaring the wrong one does not fail
+loudly: it makes every write to that key look *rejected*, and the user sees an
+error for a change that worked. `tests/quickshell/schema-hypr-shape-contract.sh`
+asks the compositor for the real shape of every mapped option.
+
+**Never trust an exit code from `hyprctl`.** `keyword` refuses to work on a
+Lua-configured Hyprland, prints the refusal to stdout, and exits 0. `eval` exits
+0 on syntax and runtime errors too. The only trustworthy signal that a write
+landed is reading the value back.
+
+**The Settings window is tiled.** `implicitWidth` is a hint; the layout decides,
+and it ranges from a half-screen split to the full display. `SliderRow` stacks
+its control under the label below 520px. Test narrow.
+
+**Binding an anchor to `undefined` does not reliably release it.** Switching
+layouts that way left a slider anchored to both edges with the label squeezed
+into what was left. Position explicitly instead.
+
+**Inside a `SettingsCard`, `parent` is the card's internal Column.** So
+`parent.modelData` in a nested `Repeater` is undefined and the rows silently
+never appear — you get a card with a heading and nothing under it. Address the
+outer model through an explicit `id`.
+
+**A `TapHandler` declared as a child of `SettingRow` lands in the trailing
+slot**, because that is the row's default property, so only the right-hand edge
+becomes clickable. Use `activatable: true` with `onActivated` for a whole-row
+target.
+
+**A copy of the Quickshell config shares the live shell's ID.** Quickshell
+derives the Shell ID from config *content*, not path, so
+`cp -a config/dot/quickshell $tmp && qs -p $tmp kill` kills the running
+desktop, and `qs -p $tmp ipc call …` can drive it. Harnesses that point at a
+single distinct `.qml` file are safe; copying the whole directory is not.
+
+## Where state lives
+
+| File | Holds |
+|---|---|
+| `~/.config/panama/settings.json` | Everything in the schema. Read by the shell *and* by `hypr/prefs.lua` |
+| `$XDG_STATE_HOME/panama/panama-home.json` | Home accessory favourites and aliases |
+| `$XDG_STATE_HOME/panama/backups/` | Settings snapshots |
+| `$XDG_STATE_HOME/panama/hypridle.conf` | Generated idle config |
+
+`SystemSettings.restoreDefaults()` spans all of them. A reset that silently
+skipped one would be worse than having no reset, because nothing would say so.
+
+## Not stored by Panama
+
+Timezone and network time are read from and written to `timedatectl` directly.
+They belong to the machine and are shared with sessions that never see Panama's
+file; storing a copy would create a second answer to a question the system
+already answers.

config/dot/quickshell/modules/settings/ScreenIntelligencePage.qml

@@ -2,9 +2,12 @@ import QtQuick
 import qs.config
 import qs.services
 
-Item {
+SettingsPage {
     id: root
 
+    title: "Screen Intelligence"
+    lede: "Turn text and codes on screen into content you can use."
+
     Component.onCompleted: ScreenIntelligence.refresh()
 
     Timer {
@@ -13,35 +16,6 @@ Item {
         onTriggered: Capture.openIntelligence()
     }
 
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text {
-                text: "Screen Intelligence"
-                color: Theme.fg
-                font.family: Theme.fontFamily
-                font.pixelSize: 27
-                font.weight: Font.DemiBold
-            }
-            Text {
-                text: "Turn text and codes on screen into content you can use."
-                color: Theme.fgDim
-                font.family: Theme.fontFamily
-                font.pixelSize: Theme.fontSize
-                bottomPadding: 6
-            }
-
     SettingsCard {
         title: "Read anything on screen"
         subtitle: "Select a region, window, or display. Panama recognizes it locally and gives you clean follow-up actions."
@@ -52,6 +26,7 @@ Item {
             detail: "Copy, search, translate, or open detected links"
             controlWidth: 160
             divider: false
+
             SettingsButton {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
@@ -66,21 +41,30 @@ Item {
         }
     }
 
+    SettingsCard {
+        title: "Capture preferences"
+        subtitle: "Choose where captures go and how recordings are encoded."
+
+        ChoiceRow { setting: "screenshotDir" }
+        ChoiceRow { setting: "recordingDir" }
+        ChoiceRow { setting: "recorderArgs"; divider: false }
+    }
+
     SettingsCard {
         title: "Local recognition"
         subtitle: "The screen image stays in Panama's cache and is deleted when you dismiss the result."
 
-                SettingRow {
+        TextRow {
             label: "Text recognition"
             detail: "Tesseract with the English language model"
             value: ScreenIntelligence.ocrReady && ScreenIntelligence.englishReady ? "Ready" : "Needs install"
         }
-                SettingRow {
+        TextRow {
             label: "QR & barcodes"
             detail: "ZBar recognizes codes alongside ordinary text"
             value: ScreenIntelligence.codeReady ? "Ready" : "Needs install"
         }
-                SettingRow {
+        TextRow {
             label: "Privacy"
             detail: "Only Search, Translate, and Open send the selected result to another application or service"
             value: "Local first"
@@ -90,14 +74,15 @@ Item {
 
     SettingsCard {
         title: "Shortcut"
-                SettingRow {
+
+        TextRow {
             label: "Read a screen selection"
             detail: "Also available as Read in the Print-screen picker"
             value: "Super + Shift + S"
             controlWidth: 190
             divider: ScreenIntelligence.ocrReady && ScreenIntelligence.codeReady && ScreenIntelligence.englishReady
         }
-                SettingRow {
+        TextRow {
             visible: !ScreenIntelligence.ocrReady || !ScreenIntelligence.codeReady || !ScreenIntelligence.englishReady
             label: "Install recognition engines"
             detail: "sudo dnf install -y tesseract zbar"
@@ -105,6 +90,4 @@ Item {
             divider: false
         }
     }
-        }
-    }
 }

config/dot/quickshell/modules/settings/ServicesPage.qml

@@ -2,89 +2,132 @@ import QtQuick
 import qs.config
 import qs.services
 
-Item {
-    function status(active: bool): string { return active ? "Running" : "Stopped"; }
+SettingsPage {
+    title: "Startup & Services"
+    lede: "A clear view of the background tools that make the desktop feel complete."
 
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
+    function status(active: bool): string {
+        return active ? "Running" : "Stopped";
+    }
 
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
+    Item {
+        width: parent.width
+        implicitHeight: refresh.implicitHeight
 
-            Row {
-                width: parent.width
-                Text { width: parent.width - refresh.width; text: "Startup & Services"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-                SettingsButton { id: refresh; text: SystemSettings.busy ? "Refreshing…" : "Refresh"; enabled: !SystemSettings.busy; onClicked: SystemSettings.refresh() }
+        SettingsButton {
+            id: refresh
+            anchors.right: parent.right
+            text: SystemSettings.busy ? "Refreshing…" : "Refresh"
+            enabled: !SystemSettings.busy
+            onClicked: SystemSettings.refresh()
+        }
     }
-            Text { text: "A clear view of the background tools that make the desktop feel complete."; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
 
     SettingsCard {
         title: "Your services"
+
         SettingRow {
             label: "Nextcloud"
             detail: "File synchronization and tray status"
             controlWidth: 190
+
             Row {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
                 spacing: 10
-                        Text { anchors.verticalCenter: parent.verticalCenter; text: status(SystemSettings.nextcloudActive); color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize }
-                        SettingsButton { text: "Open"; onClicked: SystemSettings.openApplication("nextcloud") }
+                Text {
+                    anchors.verticalCenter: parent.verticalCenter
+                    text: status(SystemSettings.nextcloudActive)
+                    color: Theme.fgDim
+                    font.family: Theme.fontFamily
+                    font.pixelSize: Theme.fontSize
+                }
+                SettingsButton {
+                    text: "Open"
+                    onClicked: SystemSettings.openApplication("nextcloud")
                 }
             }
+        }
+
         SettingRow {
             label: "RustDesk"
             detail: "Remote access through the enabled system service"
             controlWidth: 190
+
             Row {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
                 spacing: 10
-                        Text { anchors.verticalCenter: parent.verticalCenter; text: status(SystemSettings.rustdeskActive); color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize }
-                        SettingsButton { text: "Open"; onClicked: SystemSettings.openApplication("rustdesk") }
+                Text {
+                    anchors.verticalCenter: parent.verticalCenter
+                    text: status(SystemSettings.rustdeskActive)
+                    color: Theme.fgDim
+                    font.family: Theme.fontFamily
+                    font.pixelSize: Theme.fontSize
+                }
+                SettingsButton {
+                    text: "Open"
+                    onClicked: SystemSettings.openApplication("rustdesk")
                 }
             }
+        }
+
         SettingRow {
             label: "KDE Connect"
             detail: "Phone pairing, clipboard, files, and remote controls"
             divider: false
             controlWidth: 190
+
             Row {
                 anchors.right: parent.right
                 anchors.verticalCenter: parent.verticalCenter
                 spacing: 10
-                        Text { anchors.verticalCenter: parent.verticalCenter; text: status(SystemSettings.kdeconnectActive); color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize }
-                        SettingsButton { text: "Open"; onClicked: SystemSettings.openApplication("kdeconnect") }
+                Text {
+                    anchors.verticalCenter: parent.verticalCenter
+                    text: status(SystemSettings.kdeconnectActive)
+                    color: Theme.fgDim
+                    font.family: Theme.fontFamily
+                    font.pixelSize: Theme.fontSize
+                }
+                SettingsButton {
+                    text: "Open"
+                    onClicked: SystemSettings.openApplication("kdeconnect")
+                }
             }
         }
     }
 
     SettingsCard {
         title: "Desktop foundation"
-                SettingRow { label: "Hyprpaper"; detail: "Wallpaper service"; value: status(SystemSettings.hyprpaperActive) }
-                SettingRow { label: "Hypridle"; detail: "Idle and lock policy"; value: status(SystemSettings.hypridleActive) }
-                SettingRow { label: "Vicinae"; detail: "Spotlight-style launcher daemon"; value: status(SystemSettings.vicinaeActive); divider: false }
+
+        TextRow {
+            label: "Hyprpaper"
+            detail: "Wallpaper service"
+            value: status(SystemSettings.hyprpaperActive)
+        }
+        TextRow {
+            label: "Hypridle"
+            detail: "Idle and lock policy"
+            value: status(SystemSettings.hypridleActive)
+        }
+        TextRow {
+            label: "Vicinae"
+            detail: "Spotlight-style launcher daemon"
+            value: status(SystemSettings.vicinaeActive)
+            divider: false
+        }
     }
 
     SettingsCard {
         title: "Fedora system settings"
         subtitle: "These remain owned by trusted system services and GNOME's mature panels."
-                SettingRow {
+
+        ActionRow {
             label: "Network, Bluetooth, printers, users, and accounts"
             detail: "GNOME Settings remains searchable from the launcher too"
             divider: false
-                    controlWidth: 122
-                    SettingsButton { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; text: "Open network"; onClicked: SystemSettings.openGnomePanel("network") }
-                }
-            }
+            action: "Open network"
+            onTriggered: SystemSettings.openGnomePanel("network")
         }
     }
 }

config/dot/quickshell/modules/settings/SettingsSidebar.qml

@@ -11,6 +11,11 @@ Rectangle {
 
     readonly property var results: SettingsSearch.search(root.query)
 
+    onQueryChanged: {
+        if (sidebarScroll)
+            sidebarScroll.contentY = 0;
+    }
+
     function pageLabel(page: string): string {
         const found = root.destinations.find(item => item.page === page);
         return found ? found.label : "Settings";
@@ -40,8 +45,15 @@ Rectangle {
     border.width: 0
 
     Column {
-        anchors.fill: parent
-        anchors.margins: 18
+        id: sidebarHeader
+
+        anchors.left: parent.left
+        anchors.right: parent.right
+        anchors.top: parent.top
+        anchors.leftMargin: 18
+        anchors.rightMargin: 18
+        anchors.topMargin: 18
+        height: implicitHeight
         spacing: 12
 
         Text {
@@ -103,12 +115,35 @@ Rectangle {
                 onClicked: searchInput.forceActiveFocus()
             }
         }
+    }
+
+    Flickable {
+        id: sidebarScroll
+
+        anchors.left: parent.left
+        anchors.right: parent.right
+        anchors.top: sidebarHeader.bottom
+        anchors.bottom: healthFooter.top
+        anchors.leftMargin: 18
+        anchors.rightMargin: 18
+        anchors.topMargin: 12
+        anchors.bottomMargin: 12
+        contentWidth: width
+        contentHeight: scrollContent.implicitHeight
+        flickableDirection: Flickable.VerticalFlick
+        boundsBehavior: Flickable.StopAtBounds
+        clip: true
 
-        // ── Search results ──────────────────────────────────────────────────
-        // Typing searches the settings themselves, not the twelve page names.
-        // "gaps", "wallpaper", and "screenshot" all used to find nothing, which
-        // made the app feel far smaller than it is.
         Column {
+            id: scrollContent
+
+            width: sidebarScroll.width
+
+            // ── Search results ──────────────────────────────────────────────
+            // Typing searches the settings themselves, not page names.
+            Column {
+                id: searchResults
+
                 width: parent.width
                 spacing: 3
                 visible: root.query !== ""
@@ -183,6 +218,8 @@ Rectangle {
             }
 
             Column {
+                id: navigationList
+
                 width: parent.width
                 spacing: 4
                 visible: root.query === ""
@@ -251,8 +288,11 @@ Rectangle {
                 }
             }
         }
+    }
 
     Rectangle {
+        id: healthFooter
+
         anchors.left: parent.left
         anchors.right: parent.right
         anchors.bottom: parent.bottom

config/dot/quickshell/modules/settings/SoundPage.qml

@@ -4,50 +4,61 @@ import qs.config
 import qs.services
 import qs.modules.quicksettings
 
-Item {
-    Flickable {
-        anchors.fill: parent
-        clip: true
-        contentWidth: width
-        contentHeight: content.implicitHeight + 64
-        boundsBehavior: Flickable.StopAtBounds
-
-        Column {
-            id: content
-            width: parent.width - 68
-            x: 34
-            y: 30
-            spacing: 16
-
-            Text { text: "Sound"; color: Theme.fg; font.family: Theme.fontFamily; font.pixelSize: 27; font.weight: Font.DemiBold }
-            Text { text: "Live PipeWire output, input, and device selection."; color: Theme.fgDim; font.family: Theme.fontFamily; font.pixelSize: Theme.fontSize; bottomPadding: 6 }
+SettingsPage {
+    title: "Sound"
+    lede: "Live PipeWire output, input, and device selection."
 
     SettingsCard {
         title: "Output"
         subtitle: Pipewire.defaultAudioSink?.description ?? "No output device"
-                AudioSlider { width: parent.width; node: Pipewire.defaultAudioSink; output: true }
-                Rectangle { width: parent.width; height: 1; color: Theme.alpha(Theme.fg, 0.06) }
-                AudioDeviceList { width: parent.width; output: true; maxHeight: 190 }
+
+        AudioSlider {
+            width: parent.width
+            node: Pipewire.defaultAudioSink
+            output: true
+        }
+        Rectangle {
+            width: parent.width
+            height: 1
+            color: Theme.alpha(Theme.fg, 0.06)
+        }
+        AudioDeviceList {
+            width: parent.width
+            output: true
+            maxHeight: 190
+        }
     }
 
     SettingsCard {
         title: "Input"
         subtitle: Pipewire.defaultAudioSource?.description ?? "No input device"
-                AudioSlider { width: parent.width; node: Pipewire.defaultAudioSource; output: false }
-                Rectangle { width: parent.width; height: 1; color: Theme.alpha(Theme.fg, 0.06) }
-                AudioDeviceList { width: parent.width; output: false; maxHeight: 160 }
+
+        AudioSlider {
+            width: parent.width
+            node: Pipewire.defaultAudioSource
+            output: false
+        }
+        Rectangle {
+            width: parent.width
+            height: 1
+            color: Theme.alpha(Theme.fg, 0.06)
+        }
+        AudioDeviceList {
+            width: parent.width
+            output: false
+            maxHeight: 160
+        }
     }
 
     SettingsCard {
         title: "Advanced sound"
-                SettingRow {
+
+        ActionRow {
             label: "Application volumes and profiles"
             detail: "Open Fedora's complete sound panel"
             divider: false
-                    controlWidth: 104
-                    SettingsButton { anchors.right: parent.right; anchors.verticalCenter: parent.verticalCenter; text: "Open panel"; onClicked: SystemSettings.openGnomePanel("sound") }
-                }
-            }
+            action: "Open panel"
+            onTriggered: SystemSettings.openGnomePanel("sound")
         }
     }
 }

config/dot/quickshell/scripts/panama-default-apps

@@ -0,0 +1,275 @@
+#!/usr/bin/env python3
+
+"""Read and update freedesktop defaults for Panama's settings page."""
+
+from __future__ import annotations
+
+import ast
+import json
+import os
+from pathlib import Path
+import re
+import subprocess
+import sys
+import tempfile
+
+
+ROLE_TARGETS = {
+    "browser": ("settings", "default-web-browser"),
+    "mail": ("mime", "x-scheme-handler/mailto"),
+    "files": ("mime", "inode/directory"),
+    "terminal": ("mime", "x-scheme-handler/terminal"),
+    "music": ("mime", "audio/mpeg"),
+    "images": ("mime", "image/png"),
+    "video": ("mime", "video/mp4"),
+}
+DESKTOP_ID = re.compile(r"^[A-Za-z0-9][A-Za-z0-9._+-]*\.desktop$")
+EXEC_CMD = re.compile(r"hl\.exec_cmd\(\s*(\"(?:\\.|[^\"\\])*\")\s*\)")
+
+
+class BoundaryError(RuntimeError):
+    """A user-visible validation or command failure."""
+
+
+def xdg_data_roots() -> list[Path]:
+    data_home = Path(os.environ.get("XDG_DATA_HOME", Path.home() / ".local/share"))
+    data_dirs = os.environ.get("XDG_DATA_DIRS", "/usr/local/share:/usr/share")
+    return [data_home, *(Path(item) for item in data_dirs.split(":") if item)]
+
+
+def discovered_desktop_ids() -> set[str]:
+    desktop_ids: set[str] = set()
+    for root in xdg_data_roots():
+        applications = root / "applications"
+        if not applications.is_dir():
+            continue
+        for path in applications.rglob("*.desktop"):
+            if not path.is_file():
+                continue
+            relative = path.relative_to(applications)
+            desktop_ids.add("-".join(relative.parts))
+    return desktop_ids
+
+
+def require_desktop_id(desktop_id: str, *, discovered: set[str]) -> None:
+    if not DESKTOP_ID.fullmatch(desktop_id) or desktop_id not in discovered:
+        raise BoundaryError("That application is not available.")
+
+
+def run(command: list[str]) -> str:
+    completed = subprocess.run(command, check=False, capture_output=True, text=True)
+    if completed.returncode != 0:
+        detail = completed.stderr.strip()
+        raise BoundaryError(detail or "The system default could not be updated.")
+    return completed.stdout.strip()
+
+
+def query_handlers() -> dict[str, str]:
+    handlers: dict[str, str] = {}
+    for role, (kind, target) in ROLE_TARGETS.items():
+        command = (
+            ["xdg-settings", "get", target]
+            if kind == "settings"
+            else ["xdg-mime", "query", "default", target]
+        )
+        output = run(command)
+        handlers[role] = output.splitlines()[0] if output else ""
+    return handlers
+
+
+def parse_desktop_entry(path: Path) -> dict[str, str]:
+    values: dict[str, str] = {}
+    section = ""
+    try:
+        lines = path.read_text(encoding="utf-8").splitlines()
+    except (OSError, UnicodeError) as error:
+        raise BoundaryError(f"Could not read {path.name}.") from error
+    for line in lines:
+        stripped = line.strip()
+        if stripped.startswith("[") and stripped.endswith("]"):
+            section = stripped[1:-1]
+            continue
+        if section != "Desktop Entry" or "=" not in line or stripped.startswith("#"):
+            continue
+        key, value = line.split("=", 1)
+        values.setdefault(key.strip(), value.strip())
+    return values
+
+
+def autostart_directory() -> Path:
+    config_home = Path(os.environ.get("XDG_CONFIG_HOME", Path.home() / ".config"))
+    return config_home / "autostart"
+
+
+def user_autostart_entries() -> list[dict[str, object]]:
+    directory = autostart_directory()
+    if not directory.is_dir():
+        return []
+    entries: list[dict[str, object]] = []
+    for path in directory.glob("*.desktop"):
+        if path.is_symlink() or not path.is_file():
+            continue
+        values = parse_desktop_entry(path)
+        entries.append(
+            {
+                "id": path.name,
+                "name": values.get("Name", path.stem),
+                "enabled": values.get("Hidden", "false").lower() != "true",
+            }
+        )
+    return sorted(entries, key=lambda entry: (str(entry["name"]).casefold(), str(entry["id"])))
+
+
+def hypr_autostart_path() -> Path:
+    override = os.environ.get("PANAMA_HYPR_AUTOSTART")
+    if override:
+        return Path(override)
+    return Path(__file__).resolve().parents[2] / "hypr" / "autostart.lua"
+
+
+def lua_autostart_entries() -> list[dict[str, object]]:
+    path = hypr_autostart_path()
+    try:
+        lines = path.read_text(encoding="utf-8").splitlines()
+    except (OSError, UnicodeError):
+        return []
+
+    commands: list[str] = []
+    in_start_handler = False
+    for line in lines:
+        if not in_start_handler:
+            in_start_handler = bool(re.search(r'hl\.on\(\s*"hyprland\.start"', line))
+            continue
+        if line.strip() == "end)":
+            break
+        match = EXEC_CMD.search(line)
+        if match:
+            try:
+                commands.append(ast.literal_eval(match.group(1)))
+            except (SyntaxError, ValueError):
+                continue
+
+    return [
+        {
+            "id": f"hyprland:{index}",
+            "name": command.split()[0].rsplit("/", 1)[-1],
+            "command": command,
+            "enabled": True,
+            "readOnly": True,
+            "source": "config/dot/hypr/autostart.lua",
+        }
+        for index, command in enumerate(commands, start=1)
+    ]
+
+
+def snapshot() -> dict[str, object]:
+    return {
+        "handlers": query_handlers(),
+        "autostartEntries": user_autostart_entries(),
+        "luaAutostartEntries": lua_autostart_entries(),
+    }
+
+
+def set_default(role: str, desktop_id: str) -> None:
+    target = ROLE_TARGETS.get(role)
+    if target is None:
+        raise BoundaryError("That default application role is not supported.")
+    require_desktop_id(desktop_id, discovered=discovered_desktop_ids())
+    kind, setting = target
+    command = (
+        ["xdg-settings", "set", setting, desktop_id]
+        if kind == "settings"
+        else ["xdg-mime", "default", desktop_id, setting]
+    )
+    run(command)
+
+
+def update_hidden(path: Path, *, hidden: bool) -> None:
+    try:
+        original = path.read_text(encoding="utf-8")
+    except (OSError, UnicodeError) as error:
+        raise BoundaryError("That autostart entry could not be read.") from error
+
+    lines = original.splitlines()
+    output: list[str] = []
+    section = ""
+    found_section = False
+    wrote_hidden = False
+    for line in lines:
+        stripped = line.strip()
+        if stripped.startswith("[") and stripped.endswith("]"):
+            if section == "Desktop Entry" and not wrote_hidden:
+                output.append(f"Hidden={'true' if hidden else 'false'}")
+                wrote_hidden = True
+            section = stripped[1:-1]
+            found_section = found_section or section == "Desktop Entry"
+            output.append(line)
+            continue
+        if section == "Desktop Entry" and line.split("=", 1)[0].strip() == "Hidden":
+            if not wrote_hidden:
+                output.append(f"Hidden={'true' if hidden else 'false'}")
+                wrote_hidden = True
+            continue
+        output.append(line)
+
+    if not found_section:
+        raise BoundaryError("That autostart entry is not a desktop file.")
+    if not wrote_hidden:
+        output.append(f"Hidden={'true' if hidden else 'false'}")
+
+    mode = path.stat().st_mode
+    try:
+        with tempfile.NamedTemporaryFile(
+            "w", encoding="utf-8", dir=path.parent, prefix=f".{path.name}.", delete=False
+        ) as temporary:
+            temporary.write("\n".join(output) + "\n")
+            temporary.flush()
+            os.fsync(temporary.fileno())
+            temporary_path = Path(temporary.name)
+        temporary_path.chmod(mode)
+        os.replace(temporary_path, path)
+    except OSError as error:
+        if "temporary_path" in locals():
+            temporary_path.unlink(missing_ok=True)
+        raise BoundaryError("That autostart entry could not be updated.") from error
+
+
+def set_autostart(desktop_id: str, enabled_text: str) -> None:
+    if enabled_text not in {"true", "false"}:
+        raise BoundaryError("Autostart state must be true or false.")
+    if not DESKTOP_ID.fullmatch(desktop_id):
+        raise BoundaryError("That autostart entry is not available.")
+
+    directory = autostart_directory()
+    path = directory / desktop_id
+    try:
+        resolved_directory = directory.resolve(strict=True)
+        resolved_path = path.resolve(strict=True)
+    except OSError as error:
+        raise BoundaryError("That autostart entry is not available.") from error
+    if path.is_symlink() or resolved_path.parent != resolved_directory or not resolved_path.is_file():
+        raise BoundaryError("That autostart entry is not available.")
+    update_hidden(resolved_path, hidden=enabled_text == "false")
+
+
+def main(arguments: list[str]) -> int:
+    try:
+        if arguments == ["snapshot"]:
+            print(json.dumps(snapshot(), separators=(",", ":")))
+        elif len(arguments) == 3 and arguments[0] == "set-default":
+            set_default(arguments[1], arguments[2])
+        elif len(arguments) == 3 and arguments[0] == "set-autostart":
+            set_autostart(arguments[1], arguments[2])
+        else:
+            raise BoundaryError(
+                "Usage: panama-default-apps snapshot | set-default ROLE DESKTOP_ID | "
+                "set-autostart DESKTOP_ID true|false"
+            )
+    except BoundaryError as error:
+        print(str(error), file=sys.stderr)
+        return 2
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))

config/dot/quickshell/scripts/panama-settings-backup

@@ -1,90 +1,625 @@
-#!/usr/bin/env bash
+#!/usr/bin/env python3
 
-# Snapshots of the Panama settings store.
-#
-# The whole desktop configuration is one JSON file, which makes a backup a copy
-# and a restore an overwrite. That is worth exposing: the settings app now
-# changes real things -- compositor geometry, idle timeouts, the dock -- and
-# being able to get back to a known-good state without hunting through git is
-# the difference between experimenting freely and being cautious.
-#
-#   panama-settings-backup save            snapshot the current settings
-#   panama-settings-backup list            JSON list of snapshots, newest first
-#   panama-settings-backup restore <name>  replace settings with a snapshot
-#
-# Snapshots are validated as JSON on the way in and on the way out, so a
-# truncated file can never be restored over a working configuration.
-#
-# Names carry milliseconds. At one-second resolution a save followed promptly by
-# a restore produced the same filename twice, and the restore's own safety
-# snapshot overwrote the very file it was about to read.
+"""Crash-safe snapshots of Panama's desktop and Home preference stores.
 
-set -euo pipefail
+A restore is a two-file transaction. Its fixed journal and artifacts live at
+`$XDG_STATE_HOME/panama/transactions/settings-restore`; they contain no
+caller-provided paths. The journal is fsynced before either destination changes
+and is removed only after both replacements are durable. Every invocation
+recovers an incomplete transaction before doing any other work.
+"""
 
-settings="${XDG_CONFIG_HOME:-$HOME/.config}/panama/settings.json"
-backup_dir="${XDG_STATE_HOME:-$HOME/.local/state}/panama/backups"
-keep=15
+from __future__ import annotations
 
-fail() {
-    printf '%s\n' "$1" >&2
-    exit 1
-}
+import json
+import os
+import re
+import stat
+import sys
+import tempfile
+import time
+import fcntl
+from contextlib import contextmanager
+from datetime import datetime
+from pathlib import Path
+from typing import Any, Iterator, NoReturn
 
-case "${1:-list}" in
-    save)
-        [[ -r "$settings" ]] || fail "No settings file to back up."
-        jq -e . "$settings" >/dev/null 2>&1 || fail "The current settings file is not valid JSON."
-        mkdir -p "$backup_dir"
-        stamp="$(date +%Y%m%d-%H%M%S%3N)"
-        cp "$settings" "$backup_dir/settings-$stamp.json"
-        # Keep the most recent few. A snapshot per change would otherwise grow
-        # without bound in a directory nobody ever looks at.
-        ls -1t "$backup_dir"/settings-*.json 2>/dev/null | tail -n +$((keep + 1)) | while read -r old; do
-            rm -f "$old"
-        done
-        printf '{"saved":"settings-%s.json"}\n' "$stamp"
-        ;;
 
-    list)
-        mkdir -p "$backup_dir"
-        first=true
-        printf '['
-        for file in $(ls -1t "$backup_dir"/settings-*.json 2>/dev/null); do
-            name="$(basename "$file")"
-            # settings-20260818-004512.json -> 2026-08-18 00:45
-            raw="${name#settings-}"; raw="${raw%.json}"
-            pretty="${raw:0:4}-${raw:4:2}-${raw:6:2} ${raw:9:2}:${raw:11:2}:${raw:13:2}"
-            keys="$(jq -r 'keys | length' "$file" 2>/dev/null || printf 0)"
-            [[ "$first" == true ]] || printf ','
-            first=false
-            printf '{"name":"%s","when":"%s","keys":%s}' "$name" "$pretty" "$keys"
-        done
-        printf ']\n'
-        ;;
+HOME = Path(os.environ.get("HOME", str(Path.home())))
+CONFIG_ROOT = Path(os.environ.get("XDG_CONFIG_HOME", str(HOME / ".config")))
+STATE_ROOT = Path(os.environ.get("XDG_STATE_HOME", str(HOME / ".local/state")))
+SETTINGS = CONFIG_ROOT / "panama/settings.json"
+HOME_STATE = STATE_ROOT / "panama/panama-home.json"
+BACKUP_DIR = STATE_ROOT / "panama/backups"
+TRANSACTION_PARENT = STATE_ROOT / "panama/transactions"
+TRANSACTION_DIR = TRANSACTION_PARENT / "settings-restore"
+JOURNAL = TRANSACTION_DIR / "journal.json"
+LOCK_FILE = TRANSACTION_PARENT / "settings-backup.lock"
+KEEP = 15
+SNAPSHOT_RE = re.compile(r"^settings-[0-9]{8}-[0-9]{9}\.json$")
+ENTITY_RE = re.compile(r"^light\.[a-z0-9_]+$")
 
-    restore)
-        name="${2:-}"
-        [[ -n "$name" ]] || fail "Which snapshot?"
-        # Only a bare filename from the backup directory, so a caller cannot
-        # walk out of it with a path.
-        [[ "$name" =~ ^settings-[0-9]{8}-[0-9]{9}\.json$ ]] || fail "Not a snapshot name."
-        source_file="$backup_dir/$name"
-        [[ -r "$source_file" ]] || fail "That snapshot is missing."
-        jq -e . "$source_file" >/dev/null 2>&1 || fail "That snapshot is not valid JSON."
 
-        # Snapshot what is being replaced, so restore is itself undoable.
-        if [[ -r "$settings" ]] && jq -e . "$settings" >/dev/null 2>&1; then
-            mkdir -p "$backup_dir"
-            cp "$settings" "$backup_dir/settings-$(date +%Y%m%d-%H%M%S%3N).json"
-        fi
+class BackupError(RuntimeError):
+    pass
 
-        mkdir -p "$(dirname "$settings")"
-        cp "$source_file" "$settings.tmp"
-        mv "$settings.tmp" "$settings"
-        printf '{"restored":"%s"}\n' "$name"
-        ;;
 
-    *)
-        fail "usage: panama-settings-backup [save|list|restore <name>]"
-        ;;
-esac
+def fail(message: str) -> NoReturn:
+    raise BackupError(message)
+
+
+def fsync_directory(path: Path) -> None:
+    descriptor = os.open(path, os.O_RDONLY | os.O_DIRECTORY)
+    try:
+        os.fsync(descriptor)
+    finally:
+        os.close(descriptor)
+
+
+def ensure_directory(path: Path) -> None:
+    path.mkdir(parents=True, exist_ok=True)
+    if path.is_symlink() or not path.is_dir():
+        fail(f"{path} is not a safe directory.")
+
+
+@contextmanager
+def process_lock() -> Iterator[None]:
+    ensure_directory(TRANSACTION_PARENT)
+    if LOCK_FILE.is_symlink():
+        fail("The settings transaction lock is a symbolic link.")
+    descriptor = os.open(
+        LOCK_FILE,
+        os.O_RDWR | os.O_CREAT | getattr(os, "O_NOFOLLOW", 0),
+        0o600,
+    )
+    try:
+        os.fchmod(descriptor, 0o600)
+        fcntl.flock(descriptor, fcntl.LOCK_EX)
+        yield
+    finally:
+        fcntl.flock(descriptor, fcntl.LOCK_UN)
+        os.close(descriptor)
+
+
+def is_present(path: Path) -> bool:
+    return path.exists() or path.is_symlink()
+
+
+def require_regular(path: Path, label: str) -> None:
+    if path.is_symlink():
+        fail(f"{label} is a symbolic link and cannot be used safely.")
+    try:
+        mode = path.stat().st_mode
+    except FileNotFoundError:
+        fail(f"{label} is missing.")
+    if not stat.S_ISREG(mode):
+        fail(f"{label} is not a regular file.")
+
+
+def read_json(path: Path, label: str) -> dict[str, Any]:
+    require_regular(path, label)
+    try:
+        value = json.loads(path.read_text(encoding="utf-8"))
+    except (OSError, UnicodeError, json.JSONDecodeError) as error:
+        raise BackupError(f"{label} is not valid JSON.") from error
+    if not isinstance(value, dict):
+        fail(f"{label} is not a JSON object.")
+    return value
+
+
+def valid_home(value: Any) -> bool:
+    if not isinstance(value, dict):
+        return False
+    initialized = value.get("initialized")
+    favorites = value.get("favorites")
+    if not isinstance(initialized, bool) or not isinstance(favorites, list):
+        return False
+    if not initialized and favorites:
+        return False
+    seen: set[str] = set()
+    for favorite in favorites:
+        if not isinstance(favorite, dict):
+            return False
+        entity_id = favorite.get("id")
+        alias = favorite.get("alias")
+        if (
+            not isinstance(entity_id, str)
+            or ENTITY_RE.fullmatch(entity_id) is None
+            or not isinstance(alias, str)
+            or entity_id in seen
+        ):
+            return False
+        seen.add(entity_id)
+    return True
+
+
+def validate_home(value: Any, label: str) -> dict[str, Any]:
+    if not valid_home(value):
+        fail(f"{label} does not contain valid Home favourites.")
+    return value
+
+
+def json_bytes(value: Any) -> bytes:
+    return (json.dumps(value, indent=2, ensure_ascii=False) + "\n").encode("utf-8")
+
+
+def atomic_write_bytes(path: Path, content: bytes) -> None:
+    ensure_directory(path.parent)
+    if path.is_symlink():
+        fail(f"{path} is a symbolic link and cannot be replaced safely.")
+    descriptor, temporary_name = tempfile.mkstemp(prefix=f".{path.name}.", dir=path.parent)
+    temporary = Path(temporary_name)
+    try:
+        os.fchmod(descriptor, 0o600)
+        with os.fdopen(descriptor, "wb") as stream:
+            stream.write(content)
+            stream.flush()
+            os.fsync(stream.fileno())
+        os.replace(temporary, path)
+        fsync_directory(path.parent)
+    finally:
+        if temporary.exists() or temporary.is_symlink():
+            temporary.unlink()
+
+
+def atomic_write_json(path: Path, value: Any) -> None:
+    atomic_write_bytes(path, json_bytes(value))
+
+
+def durable_remove(path: Path) -> None:
+    if path.exists() or path.is_symlink():
+        path.unlink()
+        fsync_directory(path.parent)
+
+
+def transaction_path(name: str) -> Path:
+    if name not in {
+        "journal.json",
+        "desktop.old",
+        "desktop.new",
+        "home.old",
+        "home.new",
+    }:
+        fail("The restore transaction contains an unknown artifact name.")
+    path = TRANSACTION_DIR / name
+    resolved_parent = path.parent.resolve(strict=False)
+    if resolved_parent != TRANSACTION_DIR.resolve(strict=False):
+        fail("The restore transaction escaped its contained state directory.")
+    return path
+
+
+def clean_transaction_artifacts() -> None:
+    if not TRANSACTION_DIR.exists() and not TRANSACTION_DIR.is_symlink():
+        return
+    if TRANSACTION_DIR.is_symlink() or not TRANSACTION_DIR.is_dir():
+        fail("The restore transaction path is not a safe directory.")
+    for child in list(TRANSACTION_DIR.iterdir()):
+        if child.name not in {
+            "journal.json",
+            "desktop.old",
+            "desktop.new",
+            "home.old",
+            "home.new",
+        } and not child.name.startswith(".journal.json."):
+            fail("The restore transaction directory contains an unknown artifact.")
+        if child.is_dir() and not child.is_symlink():
+            fail("The restore transaction contains an unexpected directory.")
+        child.unlink()
+    fsync_directory(TRANSACTION_DIR)
+    TRANSACTION_DIR.rmdir()
+    fsync_directory(TRANSACTION_PARENT)
+
+
+def clean_stale_atomic_files() -> None:
+    locations = (
+        (SETTINGS.parent, (".settings.json.",)),
+        (HOME_STATE.parent, (".panama-home.json.",)),
+        (BACKUP_DIR, (".settings-",)),
+    )
+    for directory, prefixes in locations:
+        if not directory.exists():
+            continue
+        if directory.is_symlink() or not directory.is_dir():
+            fail(f"{directory} is not a safe directory.")
+        changed = False
+        for child in directory.iterdir():
+            if not any(child.name.startswith(prefix) for prefix in prefixes):
+                continue
+            # Only Panama's hidden atomic-write names are eligible. A matching
+            # directory is unexpected and is never recursively removed.
+            if child.is_dir() and not child.is_symlink():
+                fail("A stale settings temporary path is an unexpected directory.")
+            child.unlink()
+            changed = True
+        if changed:
+            fsync_directory(directory)
+
+
+def validate_journal_side(value: Any) -> dict[str, bool]:
+    if not isinstance(value, dict):
+        fail("The restore journal is malformed.")
+    if set(value) != {"touch", "oldPresent", "newPresent"}:
+        fail("The restore journal is malformed.")
+    if not all(isinstance(value[key], bool) for key in value):
+        fail("The restore journal is malformed.")
+    return value
+
+
+def read_journal() -> dict[str, Any]:
+    value = read_json(JOURNAL, "The restore journal")
+    if set(value) != {"version", "desktop", "home"} or value.get("version") != 1:
+        fail("The restore journal uses an unsupported format.")
+    return {
+        "version": 1,
+        "desktop": validate_journal_side(value.get("desktop")),
+        "home": validate_journal_side(value.get("home")),
+    }
+
+
+def target_for(store: str) -> Path:
+    if store == "desktop":
+        return SETTINGS
+    if store == "home":
+        return HOME_STATE
+    fail("The restore journal names an unknown store.")
+
+
+def apply_artifact(store: str, generation: str, present: bool) -> None:
+    target = target_for(store)
+    if present:
+        artifact = transaction_path(f"{store}.{generation}")
+        require_regular(artifact, "A restore transaction artifact")
+        atomic_write_bytes(target, artifact.read_bytes())
+    else:
+        ensure_directory(target.parent)
+        if target.is_symlink():
+            fail(f"{target} is a symbolic link and cannot be replaced safely.")
+        durable_remove(target)
+
+
+def recover_transaction() -> None:
+    ensure_directory(TRANSACTION_PARENT)
+    if not TRANSACTION_DIR.exists() and not TRANSACTION_DIR.is_symlink():
+        return
+    if TRANSACTION_DIR.is_symlink() or not TRANSACTION_DIR.is_dir():
+        fail("The restore transaction path is not a safe directory.")
+    if not JOURNAL.exists() and not JOURNAL.is_symlink():
+        clean_transaction_artifacts()
+        return
+
+    journal = read_journal()
+    for store in ("desktop", "home"):
+        side = journal[store]
+        if side["touch"]:
+            apply_artifact(store, "old", side["oldPresent"])
+
+    # Journal absence is the durable commit marker for recovery too. If a
+    # second power loss occurs above, the journal remains and recovery retries.
+    durable_remove(JOURNAL)
+    clean_transaction_artifacts()
+
+
+def is_v2_side(value: Any) -> bool:
+    return (
+        isinstance(value, dict)
+        and isinstance(value.get("present"), bool)
+        and (not value["present"] or isinstance(value.get("data"), dict))
+    )
+
+
+def is_v2_envelope(value: Any) -> bool:
+    return (
+        isinstance(value, dict)
+        and value.get("version") == 2
+        and is_v2_side(value.get("desktop"))
+        and is_v2_side(value.get("home"))
+    )
+
+
+def validate_snapshot(value: dict[str, Any]) -> tuple[str, dict[str, Any]]:
+    if not is_v2_envelope(value):
+        return "legacy", value
+    if value["home"]["present"]:
+        validate_home(value["home"]["data"], "That snapshot")
+    return "versioned", value
+
+
+def current_store(path: Path, label: str, *, home_store: bool = False) -> tuple[bool, Any]:
+    if not is_present(path):
+        return False, None
+    value = read_json(path, label)
+    if home_store:
+        validate_home(value, label)
+    return True, value
+
+
+def next_snapshot_path() -> Path:
+    ensure_directory(BACKUP_DIR)
+    while True:
+        stamp = datetime.now().strftime("%Y%m%d-%H%M%S%f")[:18]
+        candidate = BACKUP_DIR / f"settings-{stamp}.json"
+        if not is_present(candidate):
+            return candidate
+        time.sleep(0.002)
+
+
+def prune_snapshots() -> None:
+    snapshots = sorted(
+        (
+            path
+            for path in BACKUP_DIR.iterdir()
+            if SNAPSHOT_RE.fullmatch(path.name)
+            and path.is_file()
+            and not path.is_symlink()
+        ),
+        key=lambda path: path.stat().st_mtime_ns,
+        reverse=True,
+    )
+    for old in snapshots[KEEP:]:
+        durable_remove(old)
+
+
+def save_snapshot(*, require_any: bool, validate: bool) -> Path | None:
+    try:
+        desktop_present, desktop = current_store(
+            SETTINGS, "The current settings file"
+        )
+        home_present, home = current_store(
+            HOME_STATE, "The current Home state file", home_store=True
+        )
+    except BackupError:
+        if validate:
+            raise
+        return None
+
+    if not desktop_present and not home_present:
+        if require_any:
+            fail("No Panama settings exist to back up.")
+        return None
+
+    envelope: dict[str, Any] = {
+        "version": 2,
+        "desktop": {"present": desktop_present},
+        "home": {"present": home_present},
+    }
+    if desktop_present:
+        envelope["desktop"]["data"] = desktop
+    if home_present:
+        envelope["home"]["data"] = home
+
+    destination = next_snapshot_path()
+    atomic_write_json(destination, envelope)
+    prune_snapshots()
+    return destination
+
+
+def snapshot_source(name: str) -> Path:
+    if SNAPSHOT_RE.fullmatch(name) is None:
+        fail("Not a snapshot name.")
+    ensure_directory(BACKUP_DIR)
+    candidate = BACKUP_DIR / name
+    require_regular(candidate, "That snapshot")
+    if candidate.resolve(strict=True).parent != BACKUP_DIR.resolve(strict=True):
+        fail("That snapshot is outside the backup directory.")
+    return candidate
+
+
+def stage_artifact(name: str, content: bytes) -> None:
+    path = transaction_path(name)
+    if path.exists() or path.is_symlink():
+        fail("A stale restore transaction artifact was not recovered.")
+    descriptor = os.open(path, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600)
+    try:
+        with os.fdopen(descriptor, "wb") as stream:
+            stream.write(content)
+            stream.flush()
+            os.fsync(stream.fileno())
+    finally:
+        # fdopen owns the descriptor after construction.
+        pass
+    fsync_directory(TRANSACTION_DIR)
+
+
+def capture_old(store: str, target: Path) -> bool:
+    if not is_present(target):
+        return False
+    require_regular(target, f"The current {store} settings file")
+    stage_artifact(f"{store}.old", target.read_bytes())
+    return True
+
+
+def prepare_transaction(
+    desktop_present: bool,
+    desktop_data: dict[str, Any] | None,
+    home_touch: bool,
+    home_present: bool,
+    home_data: dict[str, Any] | None,
+) -> dict[str, Any]:
+    # Cleanup is active before the first artifact is created. A pre-journal
+    # error removes every staged/rollback file; a process death is recovered as
+    # stale preparation by the next invocation.
+    ensure_directory(TRANSACTION_PARENT)
+    clean_transaction_artifacts()
+    ensure_directory(TRANSACTION_DIR)
+    fsync_directory(TRANSACTION_PARENT)
+    try:
+        desktop_old = capture_old("desktop", SETTINGS)
+        if desktop_present:
+            stage_artifact("desktop.new", json_bytes(desktop_data))
+        if os.environ.get("PANAMA_SETTINGS_BACKUP_TEST_FAIL") == "after-desktop-stage":
+            fail("Injected failure after desktop staging.")
+
+        home_old = capture_old("home", HOME_STATE) if home_touch else False
+        if home_touch and home_present:
+            stage_artifact("home.new", json_bytes(home_data))
+
+        journal = {
+            "version": 1,
+            "desktop": {
+                "touch": True,
+                "oldPresent": desktop_old,
+                "newPresent": desktop_present,
+            },
+            "home": {
+                "touch": home_touch,
+                "oldPresent": home_old,
+                "newPresent": home_present,
+            },
+        }
+        atomic_write_json(JOURNAL, journal)
+        return journal
+    except BaseException:
+        # SIGKILL/os._exit bypass this block by design; the next invocation
+        # cleans a pre-journal directory or recovers a journalled transaction.
+        if not JOURNAL.exists() and not JOURNAL.is_symlink():
+            clean_transaction_artifacts()
+        raise
+
+
+def commit_restore(journal: dict[str, Any]) -> None:
+    try:
+        desktop = journal["desktop"]
+        apply_artifact("desktop", "new", desktop["newPresent"])
+        if os.environ.get("PANAMA_SETTINGS_BACKUP_TEST_CRASH") == "after-desktop":
+            os._exit(86)
+
+        home = journal["home"]
+        if home["touch"]:
+            apply_artifact("home", "new", home["newPresent"])
+
+        # Both targets and their parent directories are durable. Removing and
+        # fsyncing the journal is the transaction's commit record.
+        durable_remove(JOURNAL)
+        clean_transaction_artifacts()
+    except BaseException:
+        # Ordinary failures roll back immediately. Process death leaves the
+        # journal in place and takes this same path on the next invocation.
+        recover_transaction()
+        raise
+
+
+def write_live_home(text: str) -> None:
+    try:
+        value = json.loads(text)
+    except json.JSONDecodeError as error:
+        raise BackupError("The live Home state is not valid JSON.") from error
+    validate_home(value, "The live Home state")
+    atomic_write_json(HOME_STATE, value)
+
+
+def command_save(arguments: list[str]) -> None:
+    if arguments:
+        write_live_home(arguments[0])
+    destination = save_snapshot(require_any=True, validate=True)
+    assert destination is not None
+    print(json.dumps({"saved": destination.name}, separators=(",", ":")))
+
+
+def snapshot_files() -> list[Path]:
+    ensure_directory(BACKUP_DIR)
+    return sorted(
+        (
+            path
+            for path in BACKUP_DIR.iterdir()
+            if SNAPSHOT_RE.fullmatch(path.name)
+            and path.is_file()
+            and not path.is_symlink()
+        ),
+        key=lambda path: path.stat().st_mtime_ns,
+        reverse=True,
+    )
+
+
+def command_list() -> None:
+    output: list[dict[str, Any]] = []
+    for path in snapshot_files():
+        try:
+            value = read_json(path, "A snapshot")
+            if is_v2_envelope(value):
+                desktop = value["desktop"]
+                keys = len(desktop["data"]) if desktop["present"] else 0
+            else:
+                keys = len(value)
+        except BackupError:
+            keys = 0
+        raw = path.name.removeprefix("settings-").removesuffix(".json")
+        pretty = (
+            f"{raw[0:4]}-{raw[4:6]}-{raw[6:8]} "
+            f"{raw[9:11]}:{raw[11:13]}:{raw[13:15]}"
+        )
+        output.append({"name": path.name, "when": pretty, "keys": keys})
+    print(json.dumps(output, separators=(",", ":")))
+
+
+def command_restore(arguments: list[str]) -> None:
+    if not arguments:
+        fail("Which snapshot?")
+    name = arguments[0]
+    source = snapshot_source(name)
+    snapshot = read_json(source, "That snapshot")
+    snapshot_format, value = validate_snapshot(snapshot)
+
+    if snapshot_format == "versioned":
+        desktop_present = value["desktop"]["present"]
+        desktop_data = value["desktop"].get("data")
+        home_touch = True
+        home_present = value["home"]["present"]
+        home_data = value["home"].get("data")
+    else:
+        desktop_present = True
+        desktop_data = value
+        home_touch = False
+        home_present = False
+        home_data = None
+
+    # Restoring remains undoable, but a corrupt current file must not prevent a
+    # known-good snapshot from recovering the desktop.
+    save_snapshot(require_any=False, validate=False)
+    journal = prepare_transaction(
+        desktop_present,
+        desktop_data,
+        home_touch,
+        home_present,
+        home_data,
+    )
+    commit_restore(journal)
+
+    if not home_touch:
+        home_result: dict[str, Any] = {"preserve": True}
+    elif home_present:
+        home_result = {"present": True, "data": home_data}
+    else:
+        home_result = {"present": False}
+    print(
+        json.dumps(
+            {"restored": name, "home": home_result},
+            separators=(",", ":"),
+        )
+    )
+
+
+def main() -> None:
+    with process_lock():
+        clean_stale_atomic_files()
+        recover_transaction()
+        command = sys.argv[1] if len(sys.argv) > 1 else "list"
+        arguments = sys.argv[2:]
+        if command == "save":
+            command_save(arguments)
+        elif command == "list":
+            command_list()
+        elif command == "restore":
+            command_restore(arguments)
+        else:
+            fail("usage: panama-settings-backup [save|list|restore <name>]")
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except BackupError as error:
+        print(str(error), file=sys.stderr)
+        raise SystemExit(1) from error
+    except OSError as error:
+        print("The settings backup could not access its state files.", file=sys.stderr)
+        raise SystemExit(1) from error

config/dot/quickshell/services/DefaultApps.qml

@@ -0,0 +1,102 @@
+pragma Singleton
+
+// Freedesktop default handlers and session autostart entries.
+//
+// The helper owns parsing and atomic desktop-file writes. This singleton keeps
+// the QML side typed and reactive, and every external command crosses Process
+// as an argument array.
+
+import Quickshell
+import Quickshell.Io
+import QtQuick
+
+Singleton {
+    id: root
+
+    property var handlers: ({})
+    property var autostartEntries: []
+    property var luaAutostartEntries: []
+    property string lastError: ""
+
+    readonly property bool busy: snapshotProcess.running || mutationProcess.running
+    readonly property string helper: Quickshell.shellDir + "/scripts/panama-default-apps"
+    readonly property var supportedRoles: ["browser", "mail", "files", "terminal", "music", "images", "video"]
+
+    Process {
+        id: snapshotProcess
+
+        stdout: StdioCollector {
+            onStreamFinished: root.applySnapshot(this.text)
+        }
+        onExited: (exitCode, exitStatus) => {
+            if (exitCode !== 0)
+                root.lastError = "Default applications could not be read. Try refreshing."
+        }
+    }
+
+    Process {
+        id: mutationProcess
+
+        onExited: (exitCode, exitStatus) => {
+            if (exitCode !== 0) {
+                root.lastError = "That application setting could not be changed."
+                return;
+            }
+            root.refresh();
+        }
+    }
+
+    function applySnapshot(text: string): void {
+        try {
+            const payload = JSON.parse(text);
+            root.handlers = payload.handlers ?? ({});
+            root.autostartEntries = payload.autostartEntries ?? [];
+            root.luaAutostartEntries = payload.luaAutostartEntries ?? [];
+            root.lastError = "";
+        } catch (error) {
+            root.lastError = "Default applications returned an unreadable response."
+        }
+    }
+
+    function refresh(): void {
+        if (root.busy)
+            return;
+        root.lastError = "";
+        snapshotProcess.exec([root.helper, "snapshot"]);
+    }
+
+    function knownDesktopId(desktopId: string): bool {
+        if (!/^[A-Za-z0-9][A-Za-z0-9._+-]*\.desktop$/.test(desktopId))
+            return false;
+        const entries = DesktopEntries.applications.values;
+        return entries.some(entry => {
+            const entryId = String(entry.id ?? "");
+            return entryId === desktopId || entryId + ".desktop" === desktopId;
+        });
+    }
+
+    function setDefault(role: string, desktopId: string): void {
+        if (root.busy)
+            return;
+        if (!root.supportedRoles.includes(role) || !root.knownDesktopId(desktopId)) {
+            root.lastError = "Choose an application from the available list."
+            return;
+        }
+        root.lastError = "";
+        mutationProcess.exec([root.helper, "set-default", role, desktopId]);
+    }
+
+    function setAutostart(desktopId: string, enabled: bool): void {
+        if (root.busy)
+            return;
+        const known = root.autostartEntries.some(entry => entry.id === desktopId);
+        if (!known) {
+            root.lastError = "That user autostart entry is no longer available."
+            return;
+        }
+        root.lastError = "";
+        mutationProcess.exec([root.helper, "set-autostart", desktopId, String(enabled)]);
+    }
+
+    Component.onCompleted: root.refresh()
+}

config/dot/quickshell/services/Keybinds.qml

@@ -108,6 +108,17 @@ Singleton {
         return "";
     }
 
+    // A moved shortcut vacates its shipped chord, so another override may use
+    // it legitimately. Refuse to reset the first shortcut until that occupant
+    // moves away; otherwise Hyprland would receive two binds on one chord.
+    function overrideOccupantFor(chord: string, exceptShipped: string): string {
+        for (const shipped in root.overrides) {
+            if (shipped !== exceptShipped && root.overrides[shipped] === chord)
+                return shipped;
+        }
+        return "";
+    }
+
     function rebind(currentChord: string, newChord: string): bool {
         if (newChord === "" || newChord === currentChord)
             return false;
@@ -133,14 +144,25 @@ Singleton {
         return true;
     }
 
-    function resetBind(currentChord: string): void {
+    function resetBind(currentChord: string): bool {
         const shipped = root.shippedChordFor(currentChord);
         if (shipped === currentChord)
-            return;
+            return true;
+
+        const occupant = root.overrideOccupantFor(shipped, shipped);
+        if (occupant !== "") {
+            root.lastError = `${shipped} is used by another rebound shortcut. Reset that shortcut first.`;
+            return false;
+        }
+
         const next = Object.assign({}, root.overrides);
         delete next[shipped];
-        DesktopPreferences.set("keybindOverrides", next);
+        if (!DesktopPreferences.set("keybindOverrides", next)) {
+            root.lastError = "That shortcut could not be reset.";
+            return false;
+        }
         root.applyReload();
+        return true;
     }
 
     function resetAll(): void {

config/dot/quickshell/services/SettingsBackup.qml

@@ -1,14 +1,15 @@
 pragma Singleton
 
-// Snapshots of the settings store.
+// Snapshots of Panama's durable settings stores.
 //
-// The whole desktop configuration is one JSON file, so a backup is a copy and a
-// restore is an overwrite. Worth exposing now that the settings app changes
-// real things -- compositor geometry, idle timeouts, the dock -- because being
-// able to return to a known-good state is what makes experimenting feel safe.
+// DesktopPreferences and HomePreferences use separate files. The helper owns
+// the transactional filesystem boundary; this service owns settling the live
+// desktop after those files have changed underneath it.
 //
-// Restoring rewrites the file underneath the running shell, so the store is
-// told to re-read afterwards rather than waiting for the next change.
+// HomePreferences intentionally keeps its FileView in Quickshell's private
+// state directory while snapshots use Panama's canonical state directory. This
+// service bridges them through HomePreferences' public mutation API, then soft
+// reloads once external consumers have settled.
 
 import Quickshell
 import Quickshell.Io
@@ -24,7 +25,31 @@ Singleton {
     property string lastError: ""
     property string lastAction: ""
 
+    // Narrow service boundaries keep restore sequencing explicit and make it
+    // possible to verify the real handler in an isolated shell without ever
+    // calling the daily-driver compositor or wallpaper services.
+    property var readHomeState: function() {
+        return {
+            initialized: HomePreferences.initialized,
+            favorites: HomePreferences.favorites
+        };
+    }
+    property var resetHome: function() { HomePreferences.resetHomeDefaults(); }
+    property var initializeHome: function(ids) { HomePreferences.initialize(ids); }
+    property var aliasHome: function(id, alias) { HomePreferences.setAlias(id, alias); }
+    property var reloadDesktop: function() { DesktopPreferences.reload(); }
+    property var applyCompositor: function() { SystemSettings.applyPersistedDisplayPolicy(); }
+    property var reloadKeybinds: function() { Keybinds.applyReload(); }
+    property var keybindsReloading: function() { return Keybinds.reloading; }
+    property var systemBusy: function() { return SystemSettings.busy; }
+    property var currentWallpaper: function() {
+        return String(DesktopPreferences.get("wallpaperPath") ?? "");
+    }
+    property var applyWallpaper: function(path) { Wallpaper.set(path); }
+    property var reloadShell: function() { Quickshell.reload(false); }
+
     readonly property bool busy: listQuery.running || actionRun.running
+        || applyRestoredState.running || settleReload.running
 
     Process {
         id: listQuery
@@ -34,6 +59,7 @@ Singleton {
                 try {
                     const parsed = JSON.parse(this.text);
                     root.snapshots = Array.isArray(parsed) ? parsed : [];
+                    if (root.lastError === "Could not read the list of snapshots.")
                         root.lastError = "";
                 } catch (error) {
                     root.lastError = "Could not read the list of snapshots.";
@@ -45,6 +71,11 @@ Singleton {
     Process {
         id: actionRun
         property bool restoring: false
+        property string outputText: ""
+        stdout: StdioCollector {
+            onStreamFinished: actionRun.outputText = this.text
+        }
+        onStarted: actionRun.outputText = ""
         onExited: (exitCode, exitStatus) => {
             if (exitCode !== 0) {
                 root.lastError = actionRun.restoring
@@ -52,14 +83,52 @@ Singleton {
                     : "The settings could not be backed up.";
                 return;
             }
-            root.lastError = "";
             root.lastAction = actionRun.restoring ? "restored" : "saved";
-            if (actionRun.restoring)
-                DesktopPreferences.reload();
+            if (actionRun.restoring) {
+                const homeReloaded = root.handleRestoreOutput(actionRun.outputText);
+                root.lastError = homeReloaded
+                    ? ""
+                    : "Desktop settings were restored, but Home favourites could not be reloaded.";
+            } else
+                root.lastError = "";
             root.refresh();
         }
     }
 
+    Timer {
+        id: applyRestoredState
+        interval: 80
+        repeat: false
+        onTriggered: {
+            // DesktopPreferences.reload() invalidates reactive shell bindings.
+            // These services also own state outside QML and need an explicit
+            // replay: compositor options, Lua-generated binds, and hyprpaper.
+            root.applyCompositor();
+            root.reloadKeybinds();
+            root.applyWallpaper(root.currentWallpaper());
+
+            settleReload.attempts = 0;
+            settleReload.restart();
+        }
+    }
+
+    Timer {
+        id: settleReload
+        property int attempts: 0
+        interval: 100
+        repeat: true
+        onTriggered: {
+            attempts++;
+            // Let the current instances finish their external writes before a
+            // soft reload replaces them. The cap keeps a failed external tool
+            // from leaving restored Home state stale indefinitely.
+            if ((!root.keybindsReloading() && !root.systemBusy()) || attempts >= 30) {
+                stop();
+                root.reloadShell();
+            }
+        }
+    }
+
     Component.onCompleted: root.refresh()
 
     function refresh(): void {
@@ -71,7 +140,81 @@ Singleton {
         if (actionRun.running)
             return;
         actionRun.restoring = false;
-        actionRun.exec([root.helperPath, "save"]);
+        actionRun.exec([root.helperPath, "save", root.serialiseHomeState()]);
+    }
+
+    function serialiseHomeState(): string {
+        const current = root.readHomeState();
+        const favorites = [];
+        for (const favorite of current.favorites ?? []) {
+            favorites.push({
+                id: String(favorite.id ?? ""),
+                alias: String(favorite.alias ?? "")
+            });
+        }
+        return JSON.stringify({
+            initialized: current.initialized === true,
+            favorites: favorites
+        });
+    }
+
+    function handleRestoreOutput(text: string): bool {
+        if (!root.reloadHomeState(text))
+            return false;
+        root.reloadDesktop();
+        applyRestoredState.restart();
+        return true;
+    }
+
+    // Restore output carries the canonical Home state. Reconstructing through
+    // these methods keeps validation and persistence inside HomePreferences;
+    // this service never mutates its aliases or private FileView directly.
+    function reloadHomeState(text: string): bool {
+        try {
+            const result = JSON.parse(text);
+            const restored = result?.home;
+            if (!restored || restored.preserve === true)
+                return true;
+
+            if (restored.present !== true)
+                return restored.present === false
+                    ? root.resetHomeState()
+                    : false;
+
+            const data = restored.data;
+            if (!data || typeof data.initialized !== "boolean" || !Array.isArray(data.favorites))
+                return false;
+            const ids = [];
+            const aliases = [];
+            const seen = {};
+            for (const favorite of data.favorites) {
+                const id = favorite?.id;
+                const alias = favorite?.alias;
+                if (typeof id !== "string" || !/^light\.[a-z0-9_]+$/.test(id)
+                        || typeof alias !== "string" || seen[id])
+                    return false;
+                seen[id] = true;
+                ids.push(id);
+                aliases.push(alias);
+            }
+            if (!data.initialized && ids.length > 0)
+                return false;
+
+            root.resetHome();
+            if (!data.initialized)
+                return true;
+            root.initializeHome(ids);
+            for (let index = 0; index < ids.length; index++)
+                root.aliasHome(ids[index], aliases[index]);
+            return true;
+        } catch (error) {
+            return false;
+        }
+    }
+
+    function resetHomeState(): bool {
+        root.resetHome();
+        return true;
     }
 
     // The name is matched against the snapshot list rather than trusted, so no

config/dot/quickshell/services/SystemSettings.qml

@@ -396,12 +396,9 @@ Singleton {
         // that only cleared the schema store would silently leave a customised
         // favourites list behind while claiming to restore Panama's defaults.
         //
-        // Done through HomePreferences' public writable aliases rather than a
-        // reset function of its own: clearing `favorites` and returning
-        // `initialized` to false is exactly the state a fresh install has, and
-        // it lets initialize() seed the list again on next use.
-        HomePreferences.favorites = [];
-        HomePreferences.initialized = false;
+        // HomePreferences owns the write-through boundary so the state file is
+        // rewritten before this reset can be considered complete.
+        HomePreferences.resetHomeDefaults();
 
         resettleTimer.restart();
     }

config/dot/quickshell/settings-backup-harness.qml

@@ -0,0 +1,76 @@
+// Isolated behavioral harness for SettingsBackup's live restore handoff.
+// Every external consumer is replaced before restore output is exercised, so
+// this file never writes the real compositor, wallpaper, keymap, or shell.
+import Quickshell
+import Quickshell.Io
+import QtQuick
+
+import qs.services
+
+ShellRoot {
+    id: root
+
+    property var calls: []
+    property bool homeInitialized: false
+    property var homeFavorites: []
+
+    function record(name: string): void {
+        const next = root.calls.slice();
+        next.push(name);
+        root.calls = next;
+    }
+
+    Component.onCompleted: {
+        SettingsBackup.readHomeState = function() {
+            return {
+                initialized: root.homeInitialized,
+                favorites: root.homeFavorites
+            };
+        };
+        SettingsBackup.resetHome = function() {
+            root.record("home.reset");
+            root.homeInitialized = false;
+            root.homeFavorites = [];
+        };
+        SettingsBackup.initializeHome = function(ids) {
+            root.record("home.initialize:" + ids.join(","));
+            root.homeInitialized = true;
+            root.homeFavorites = ids.map(id => ({ id: id, alias: "" }));
+        };
+        SettingsBackup.aliasHome = function(id, alias) {
+            root.record("home.alias:" + id + "=" + alias);
+            root.homeFavorites = root.homeFavorites.map(favorite =>
+                favorite.id === id ? { id: id, alias: alias } : favorite);
+        };
+        SettingsBackup.reloadDesktop = function() { root.record("desktop.reload"); };
+        SettingsBackup.applyCompositor = function() { root.record("system.apply"); };
+        SettingsBackup.reloadKeybinds = function() { root.record("keybinds.reload"); };
+        SettingsBackup.keybindsReloading = function() { return false; };
+        SettingsBackup.systemBusy = function() { return false; };
+        SettingsBackup.currentWallpaper = function() { return "/tmp/restored-wallpaper.jpg"; };
+        SettingsBackup.applyWallpaper = function(path) { root.record("wallpaper.set:" + path); };
+        SettingsBackup.reloadShell = function() { root.record("shell.reload"); };
+    }
+
+    IpcHandler {
+        target: "settings-backup-behavior"
+
+        function reset(): void {
+            root.calls = [];
+            root.homeInitialized = false;
+            root.homeFavorites = [];
+        }
+
+        function apply(output: string): bool {
+            return SettingsBackup.handleRestoreOutput(output);
+        }
+
+        function status(): string {
+            return JSON.stringify({
+                calls: root.calls,
+                initialized: root.homeInitialized,
+                favorites: root.homeFavorites
+            });
+        }
+    }
+}

docs/superpowers/plans/2026-08-17-panama-cohesion.md

@@ -285,3 +285,64 @@ can run in parallel with it.
 
 Nothing here is committed yet; `main` has 20+ uncommitted paths from prior work
 that should get a restore point before Stage 1 begins.
+
+---
+
+## Stage 5 — Replace GNOME Settings for what Panama owns
+
+Not in the original plan. Added after the settings vocabulary made new pages
+cheap enough that the limiting factor stopped being effort and started being
+scope. Built jointly with the codex agent, which took default applications, the
+page migrations, and the remaining hardcoded values.
+
+- [x] **Wallpaper** — thumbnail grid, applied over hyprpaper IPC.
+- [x] **Power & Lock** — screen blank, lock, suspend, lock-before-sleep.
+- [x] **Date & Time** — timezone and network time via `timedatectl`.
+- [x] **Accessibility** — pointer size, text scale, motion, contrast.
+- [x] **Search that indexes settings**, not page names.
+- [x] **Editable Dock** — reorder, unpin, add.
+- [x] **Settings snapshots** — save, list, restore.
+- [x] **Rebindable shortcuts.**
+- [ ] Displays: resolution, refresh rate, scale, rotation.
+- [ ] Per-application notification rules.
+- [ ] Window rules (float/tile/workspace) as a page.
+
+**Landed.** Each of these turned up something the compositor or its tools do
+differently than documented, and in every case the failure mode was silence
+rather than an error:
+
+* **hyprpaper 0.8 ignores the "all outputs" form.** `<empty>,<path>` is accepted
+  and does nothing, so a wallpaper set that way appears to succeed and never
+  changes. Its IPC is also much smaller than older versions suggest — `preload`,
+  `listloaded`, `unload`, and `reload` all answer "invalid hyprpaper request".
+* **`cursor:inactive_timeout` is answered as `float`, not `int`.** A wrong
+  `readAs` does not fail loudly; it makes every write to that key look rejected,
+  and the user sees an error for a change that worked.
+* **Snapshot filenames collided at one-second resolution.** A save followed
+  promptly by a restore produced the same name twice, and the restore's own
+  safety snapshot overwrote the file it was about to read. Found by the
+  contract, which restores immediately after saving.
+* **Keying bind overrides by description moved every bind sharing one.**
+  Rebinding `SUPER+C` also dragged `XF86Calculator` onto the same chord.
+  Descriptions are not unique; chords are.
+* **The GNOME delegation allow-list named a panel that does not exist.**
+  `users` is not in `gnome-control-center --list`, so that button opened
+  nothing.
+* **A copy of the Quickshell config shares the live shell's ID.** Quickshell
+  derives it from content rather than path, so an "isolated" harness built by
+  copying the config directory can kill or drive the running desktop. This took
+  the live shell down twice during development. Harnesses pointing at a single
+  distinct `.qml` file are unaffected.
+
+Two configurations are now generated rather than edited, because `~/.config/hypr`
+is a symlink into this repository and writing there at runtime would put machine
+state into a tracked file: hypridle's config, into `XDG_STATE_HOME` with a
+systemd drop-in pointing at it, and the wallpaper, which is applied over IPC and
+re-applied at shell start instead of being written into `hyprpaper.conf`.
+
+The schema gained a `json` type for structured values — the dock's pinned list
+and the keybind overrides — so they live in the one settings file and are
+covered by the one reset, rather than each growing a preference store of its
+own. `restoreDefaults()` spans every store Panama owns, including the Home
+accessory arrangement, which it reaches through that service's existing public
+aliases rather than an API added for the purpose.

docs/superpowers/plans/2026-08-18-settings-completion-codex.md

@@ -0,0 +1,119 @@
+# Panama Settings Completion Codex Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Complete Codex's portion of Panama Settings with default-application and autostart management, shared page scaffolds, and real controls for every remaining hardcoded shell behavior value.
+
+**Architecture:** `DefaultApps.qml` is the typed system boundary for freedesktop default handlers and user autostart entries; `ApplicationsPage.qml` binds reactively to `DesktopEntries.applications.values` and never snapshots the asynchronous model. Existing pages adopt `SettingsPage`; schema-bound values use `ChoiceRow`, `SliderRow`, and `ToggleRow`, while specialized controls and genuinely read-only facts remain specialized or use `TextRow`.
+
+**Tech Stack:** Quickshell 0.3 QML, QtQuick, `xdg-settings`, `xdg-mime`, freedesktop `.desktop` files, Bash/Python contract tests, Hyprland.
+
+**Spec:** `docs/superpowers/specs/2026-08-17-panama-cohesion-design.md`
+
+**Status:** Implemented and independently reviewed on 2026-08-18. The combined
+verification gate is recorded in the integrating commit history.
+
+## Global Constraints
+
+- Claude owns and must be the only editor of `PreferenceSchema.qml`, `SettingsSidebar.qml`, `SettingsShell.qml`, `qmldir`, `ShellState.qml`, `SystemSettings.qml`, `AppearancePage.qml`, `DesktopPage.qml`, `ShortcutsPage.qml`, and `config/dot/hypr/*`.
+- Never use `hyprctl keyword`; every `hl.bind` requires a description.
+- Use `DesktopEntries.applications.values` in reactive bindings. Do not call `byId()` or `heuristicLookup()` in a one-time initialization path.
+- Use `SettingRow.activatable` for whole-row clicks. Nested Repeaters address outer models through explicit ids, never `parent.modelData`.
+- Only these verified GNOME panels may be opened: applications, background, bluetooth, color, display, keyboard, mouse, multitasking, network, notifications, online-accounts, power, printers, privacy, search, sharing, sound, system, universal-access, wacom, wellbeing, wifi, wwan.
+- No mock phase, new visual direction, color literals, or idle animation. Preserve page copy and behavior unless a dead read-only row is replaced by a real control.
+- Automated tests isolate XDG config/state, do not change live defaults or autostart entries, do not launch applications, and do not invoke Home actions.
+
+---
+
+### Task 1: Applications, default handlers, and user autostart
+
+**Files:**
+- Create: `config/dot/quickshell/services/DefaultApps.qml`
+- Create: `config/dot/quickshell/modules/settings/ApplicationsPage.qml`
+- Create only if needed for a safe parser/writer boundary: `config/dot/quickshell/scripts/panama-default-apps`
+- Create: `tests/quickshell/default-apps-contract.sh`
+- Create: `tests/quickshell/applications-settings-contract.sh`
+
+**Interfaces:**
+- Consumes: `DesktopEntries.applications.values`, `SettingsPage`, `SettingsCard`, `SettingRow.activatable`, `ActionRow`, `TextRow`, and Claude-owned routing for page id `applications`.
+- Produces: a singleton `DefaultApps` with reactive `handlers`, `autostartEntries`, `luaAutostartEntries`, `busy`, `lastError`, `refresh()`, `setDefault(role, desktopId)`, and `setAutostart(desktopId, enabled)`.
+
+- [x] **Step 1: Write failing helper/service and page contracts**
+
+Cover seven roles: browser (`xdg-settings default-web-browser`), mail (`x-scheme-handler/mailto`), files (`inode/directory`), terminal (`x-scheme-handler/terminal`), music (`audio/mpeg`), images (`image/png`), and video (`video/mp4`). Use temporary XDG directories and fake `xdg-settings`/`xdg-mime` binaries; assert setters pass separate arguments and reject unknown roles or desktop ids. Fixture user autostart entries must expose id/name/enabled and toggle with standard `Hidden=` semantics; `hl.exec_cmd` entries parsed from `config/dot/hypr/autostart.lua` are read-only and identify their source.
+
+The page contract must require `DesktopEntries.applications.values`, page id/object name, all seven role labels, user and compositor autostart sections, `SettingRow.activatable`, and must reject `Component.onCompleted` snapshots plus `byId()`/`heuristicLookup()`.
+
+- [x] **Step 2: Run focused contracts to verify RED**
+
+```bash
+tests/quickshell/default-apps-contract.sh
+tests/quickshell/applications-settings-contract.sh
+```
+
+Expected: fail because the service/page and behavior do not exist.
+
+- [x] **Step 3: Implement the minimal typed boundary and page**
+
+All process commands use argument arrays. Validate roles against a fixed map and desktop ids against the reactive applications model or a strict freedesktop id pattern plus discovered entries. The page filters role choices from category/generic-name data, sorts by display name, keeps the current handler visible even when category metadata is sparse, and shows calm inline errors. Toggling applies only to files under `$XDG_CONFIG_HOME/autostart`; Lua entries remain read-only with explanatory copy.
+
+- [x] **Step 4: Verify and commit**
+
+```bash
+tests/quickshell/default-apps-contract.sh
+tests/quickshell/applications-settings-contract.sh
+tests/quickshell/settings-pages-contract.sh
+```
+
+Commit subject: `Add application and autostart settings`.
+
+---
+
+### Task 2: Remaining page scaffolds and hardcoded behavior controls
+
+**Files:**
+- Modify: `config/dot/quickshell/config/Settings.qml`
+- Modify: `config/dot/quickshell/modules/settings/HomePage.qml`
+- Modify: `config/dot/quickshell/modules/settings/DisplaysPage.qml`
+- Modify: `config/dot/quickshell/modules/settings/ConnectivityPage.qml`
+- Modify: `config/dot/quickshell/modules/settings/SoundPage.qml`
+- Modify: `config/dot/quickshell/modules/settings/NotificationsPage.qml`
+- Modify: `config/dot/quickshell/modules/settings/ScreenIntelligencePage.qml`
+- Modify: `config/dot/quickshell/modules/settings/ServicesPage.qml`
+- Modify: `config/dot/quickshell/modules/settings/AboutPage.qml`
+- Modify: `tests/quickshell/settings-pages-contract.sh`
+- Create: `tests/quickshell/settings-hardcoded-values-contract.sh`
+
+**Interfaces:**
+- Consumes: Claude-owned schema keys `temperatureUnit`, `weatherRefreshMinutes`, `vitalsIntervalMs`, `notificationTimeoutMs`, `notificationTimeoutCriticalMs`, `notificationHistoryLimit`, `maxVisibleToasts`, `screenshotDir`, `recordingDir`, and `recorderArgs`; shared Settings rows; existing services and system handoffs.
+- Produces: the same public `Settings.qml` properties, now each reading `DesktopPreferences.get("key")`, and controls routed to weather/vitals, notifications, and capture pages.
+
+- [x] **Step 1: Write failing contracts**
+
+Require all ten `Settings.qml` properties to use `DesktopPreferences.get()` exactly. Require every listed page root to be `SettingsPage` and reject its copied root `Flickable` scaffold. Require weather/vitals controls on `HomePage`, notification controls on `NotificationsPage`, and capture directory/encoder controls on `ScreenIntelligencePage`; every schema-bound control uses a shared row and writes only through `SystemSettings.commitPreference` via that row.
+
+- [x] **Step 2: Run contracts to verify RED**
+
+```bash
+tests/quickshell/settings-hardcoded-values-contract.sh
+tests/quickshell/settings-pages-contract.sh
+```
+
+Expected: fail on hardcoded properties and copied page scaffolds.
+
+- [x] **Step 3: Implement controls and migrate scaffolds**
+
+Use `ChoiceRow` for `temperatureUnit`, `screenshotDir`, `recordingDir`, and `recorderArgs`; use `SliderRow` for numeric refresh, timeout, history, and toast limits. Give `notificationTimeoutCriticalMs` `zeroLabel: "Never"`. Preserve all specialized buttons, service status rows, display diagnostics, permission/privacy explanations, and GNOME handoff actions. Convert genuinely read-only rows to `TextRow`; delete only rows superseded by working controls.
+
+- [x] **Step 4: Run focused and full suite, then commit**
+
+```bash
+tests/quickshell/settings-hardcoded-values-contract.sh
+tests/quickshell/settings-pages-contract.sh
+tests/quickshell/settings-preferences-contract.sh
+tests/quickshell/settings-search-contract.sh
+```
+
+Then run every `tests/quickshell/*.sh`, every `tests/hypr/*.sh`, and all three `tests/quickshell/*_test.py` files sequentially.
+
+Commit subject: `Complete Panama settings controls`.

docs/superpowers/plans/2026-08-18-settings-home-phone-completion.md

@@ -0,0 +1,103 @@
+# Settings Home & Phone Completion Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Finish the Home & Phone Settings page on Panama's shared Settings vocabulary and give the global reset path a named, durable Home preference API.
+
+**Architecture:** `HomePhonePage` adopts `SettingsPage` for the shared scrolling/title/lede scaffold while retaining its specialized catalog, reorder, alias, and phone controls. `HomePreferences.resetHomeDefaults()` becomes the sole Home-store reset boundary: it returns the store to fresh-install state and writes immediately so `SystemSettings.restoreDefaults()` can call it without mutating aliases.
+
+**Tech Stack:** Quickshell 0.3 QML, QtQuick, Bash contract tests, Hyprland.
+
+**Spec:** `docs/superpowers/specs/2026-08-17-panama-cohesion-design.md`
+
+## Global Constraints
+
+- Do not touch `SystemSettings.qml`, `PreferenceSchema.qml`, keybinds, or Claude's shared row implementations in this branch.
+- Preserve ordered Home favorites, aliases, first-four Control Center badges, search, drag and keyboard reorder, retry state, Home Assistant status copy, and BlueBubbles availability behavior.
+- Automated tests must not toggle or dim a real light and must not launch BlueBubbles.
+- New behavior follows red-green TDD; fixture and state directories remain isolated from the live desktop.
+- No mock phase and no new visual direction: this is cohesion work against the already-approved design.
+
+---
+
+### Task 1: Shared Home & Phone page and named reset boundary
+
+**Files:**
+- Modify: `config/dot/quickshell/config/HomePreferences.qml`
+- Modify: `config/dot/quickshell/home-preferences-harness.qml`
+- Modify: `config/dot/quickshell/modules/settings/HomePhonePage.qml`
+- Modify only if required for shared vocabulary compatibility: `config/dot/quickshell/modules/settings/HomeFavoriteCard.qml`
+- Modify only if required for shared vocabulary compatibility: `config/dot/quickshell/modules/settings/AvailableLightRow.qml`
+- Modify: `tests/quickshell/home-preferences-contract.sh`
+- Modify: `tests/quickshell/home-phone-settings-contract.sh`
+
+**Interfaces:**
+- Consumes: `SettingsPage { title; lede; default content }`, existing `SettingsCard`, `SettingRow`, `ActionRow`, `TextRow`, `HomeAssistant`, `SystemSettings.bluebubblesAvailable`, and writable `HomePreferences` adapter state.
+- Produces: `HomePreferences.resetHomeDefaults(): void`, which sets `favorites` to `[]`, sets `initialized` to `false`, clears stale save error state, and invokes `preferencesFile.writeAdapter()` immediately after stopping the debounce timer.
+
+- [ ] **Step 1: Write failing contracts**
+
+Add `reset()` to the isolated `home-pref-test` IPC harness. Extend `home-preferences-contract.sh` to seed aliases/order, invoke reset, and require both IPC state and `panama-home.json` to become exactly `{"initialized":false,"favorites":[]}` without waiting for the 180 ms debounce interval. Extend `home-phone-settings-contract.sh` to require `SettingsPage {`, `title: "Home & Phone"`, and the existing lede through `lede:`, while rejecting the copied root `Flickable` scaffold.
+
+- [ ] **Step 2: Run contracts to verify RED**
+
+```bash
+tests/quickshell/home-preferences-contract.sh
+tests/quickshell/home-phone-settings-contract.sh
+```
+
+Expected: the preference contract fails because `reset` is missing; the page contract fails because the page still owns a copied `Flickable` scaffold.
+
+- [ ] **Step 3: Implement the reset API and shared page scaffold**
+
+Implement this public boundary in `HomePreferences.qml`:
+
+```qml
+function resetHomeDefaults(): void {
+    persistTimer.stop();
+    values.favorites = [];
+    values.initialized = false;
+    root.saveError = "";
+    preferencesFile.writeAdapter();
+}
+```
+
+Replace the `HomePhonePage` root `Item` plus nested `Flickable`/title/lede scaffold with:
+
+```qml
+SettingsPage {
+    id: root
+    objectName: "home-phone-page"
+    title: "Home & Phone"
+    lede: "Choose what appears in Control Center and keep phone continuity close at hand."
+    // Existing SettingsCard content remains in order.
+}
+```
+
+Use shared `ActionRow` or `TextRow` only where their single-action/read-only contracts preserve all current status and accessibility behavior. Keep specialized rows when the shared primitive would lose information.
+
+- [ ] **Step 4: Run focused contracts to GREEN**
+
+```bash
+tests/quickshell/home-preferences-contract.sh
+tests/quickshell/home-phone-settings-contract.sh
+tests/quickshell/settings-pages-contract.sh
+tests/quickshell/settings-rows-contract.sh
+tests/quickshell/settings-commit-reset-contract.sh
+```
+
+Expected: every command exits 0; no test launches BlueBubbles or changes a real Home Assistant entity.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add config/dot/quickshell/config/HomePreferences.qml \
+  config/dot/quickshell/home-preferences-harness.qml \
+  config/dot/quickshell/modules/settings/HomePhonePage.qml \
+  config/dot/quickshell/modules/settings/HomeFavoriteCard.qml \
+  config/dot/quickshell/modules/settings/AvailableLightRow.qml \
+  tests/quickshell/home-preferences-contract.sh \
+  tests/quickshell/home-phone-settings-contract.sh \
+  docs/superpowers/plans/2026-08-18-settings-home-phone-completion.md
+git commit -m "Finish Home and Phone settings cohesion"
+```

tests/quickshell/applications-settings-contract.sh

@@ -0,0 +1,126 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+fail() {
+    printf 'applications settings contract: %s\n' "$1" >&2
+    exit 1
+}
+
+project_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+page="$project_root/config/dot/quickshell/modules/settings/ApplicationsPage.qml"
+
+[[ -f "$page" ]] || fail 'Applications page is missing'
+
+assert_contains() {
+    rg -F --quiet "$1" "$page" || fail "page is missing: $1"
+}
+
+assert_contains 'SettingsPage {'
+assert_contains 'objectName: "applications"'
+assert_contains 'DesktopEntries.applications.values'
+assert_contains 'DefaultApps'
+assert_contains 'SettingsCard {'
+assert_contains 'SettingRow {'
+assert_contains 'activatable:'
+assert_contains 'ActionRow {'
+assert_contains 'TextRow {'
+
+for label in Browser Mail Files Terminal Music Images Video; do
+    assert_contains "label: \"$label\""
+done
+
+assert_contains 'title: "Default applications"'
+assert_contains 'title: "User autostart"'
+assert_contains 'title: "Compositor autostart"'
+assert_contains 'categories'
+assert_contains 'genericName'
+assert_contains '.sort('
+assert_contains 'currentEntry'
+assert_contains 'read-only'
+assert_contains 'choices.push(currentEntry)'
+assert_contains 'label: "Application settings need attention"'
+assert_contains 'DefaultApps.busy ? "Loading…"'
+assert_contains 'visible: !DefaultApps.busy && DefaultApps.autostartEntries.length === 0'
+assert_contains 'visible: !DefaultApps.busy && DefaultApps.luaAutostartEntries.length === 0'
+
+PAGE_PATH="$page" bun -e '
+const source = await Bun.file(process.env.PAGE_PATH).text();
+const rolesSource = source.match(/readonly property var roles:\s*(\[[\s\S]*?\n    \])/);
+const matcherSource = source.match(/function matchesRole\(entry: var, role: var\): bool \{([\s\S]*?)\n    \}/);
+if (!rolesSource || !matcherSource) {
+    console.error("applications settings contract: role matcher could not be loaded");
+    process.exit(1);
+}
+
+const roles = Function(`return (${rolesSource[1]})`)();
+const matchesRole = Function("entry", "role", matcherSource[1]);
+const role = key => roles.find(candidate => candidate.key === key);
+const fixtures = [
+    {
+        name: "AudioVideo does not imply music",
+        entry: { name: "Kodi", genericName: "Media Center", comment: "Entertainment hub", categories: "AudioVideo;Player;" },
+        role: "music",
+        expected: false
+    },
+    {
+        name: "Graphics does not imply image handler",
+        entry: { name: "Document Scanner", genericName: "Document Scanner", comment: "Scan documents", categories: ["Graphics"] },
+        role: "images",
+        expected: false
+    },
+    {
+        name: "Viewer does not imply image handler",
+        entry: { name: "Papers", genericName: "Document Viewer", comment: "Read documents", categories: "Office;Viewer;" },
+        role: "images",
+        expected: false
+    },
+    {
+        name: "comment does not nominate a default handler",
+        entry: { name: "Settings", genericName: "System Settings", comment: "Configure your video player", categories: ["System"] },
+        role: "video",
+        expected: false
+    },
+    {
+        name: "exact audio player categories match music",
+        entry: { name: "Rhythmbox", genericName: "Music Player", comment: "Play music", categories: "AudioVideo;Audio;Player;" },
+        role: "music",
+        expected: true
+    },
+    {
+        name: "exact video category matches video",
+        entry: { name: "Videos", genericName: "Video Player", comment: "Play movies", categories: ["AudioVideo", "Video", "Player"] },
+        role: "video",
+        expected: true
+    },
+    {
+        name: "descriptive metadata matches image handler",
+        entry: { name: "Loupe", genericName: "Image Viewer", comment: "Browse pictures", categories: "Graphics;Viewer;" },
+        role: "images",
+        expected: true
+    }
+];
+
+for (const fixture of fixtures) {
+    const actual = matchesRole(fixture.entry, role(fixture.role));
+    if (actual !== fixture.expected) {
+        console.error(`applications settings contract: ${fixture.name}: expected ${fixture.expected}, got ${actual}`);
+        process.exit(1);
+    }
+}
+'
+
+if rg --quiet 'Component\.onCompleted|DesktopEntries\.(byId|heuristicLookup)' "$page"; then
+    fail 'page snapshots or performs a one-time desktop-entry lookup'
+fi
+if rg -F --quiet 'label: "Could not apply the change"' "$page"; then
+    fail 'error heading incorrectly describes read failures as apply failures'
+fi
+if rg --quiet '#[0-9A-Fa-f]{3,8}' "$page"; then
+    fail 'page introduces a color literal instead of the shared visual system'
+fi
+
+[[ "$(rg --count 'activatable:' "$page")" -ge 2 ]] \
+    || fail 'default and autostart rows are not both whole-row activatable'
+
+printf 'applications settings contract: PASS\n'

tests/quickshell/default-apps-contract.sh

@@ -0,0 +1,230 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+fail() {
+    printf 'default apps contract: %s\n' "$1" >&2
+    exit 1
+}
+
+project_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+helper="$project_root/config/dot/quickshell/scripts/panama-default-apps"
+service="$project_root/config/dot/quickshell/services/DefaultApps.qml"
+test_root="$(mktemp -d /tmp/panama-default-apps.XXXXXX)"
+trap 'rm -rf "$test_root"' EXIT
+
+[[ -x "$helper" ]] || fail 'helper is missing or not executable'
+[[ -f "$service" ]] || fail 'DefaultApps service is missing'
+
+assert_service_contains() {
+    rg -F --quiet "$1" "$service" || fail "service is missing: $1"
+}
+
+assert_service_contains 'pragma Singleton'
+assert_service_contains 'property var handlers'
+assert_service_contains 'property var autostartEntries'
+assert_service_contains 'property var luaAutostartEntries'
+assert_service_contains 'readonly property bool busy'
+assert_service_contains 'property string lastError'
+assert_service_contains 'function refresh(): void'
+assert_service_contains 'function setDefault(role: string, desktopId: string): void'
+assert_service_contains 'function setAutostart(desktopId: string, enabled: bool): void'
+assert_service_contains 'DesktopEntries.applications.values'
+if rg --quiet 'command\s*:\s*"' "$service"; then
+    fail 'Process command must be an argument array'
+fi
+
+config_home="$test_root/config"
+data_home="$test_root/data"
+data_dirs="$test_root/data-dirs"
+fake_bin="$test_root/bin"
+call_log="$test_root/calls"
+lua_fixture="$test_root/autostart.lua"
+mkdir -p "$config_home/autostart" "$data_home/applications" "$data_dirs" "$fake_bin"
+
+write_application() {
+    local desktop_id="$1"
+    local name="$2"
+    local generic_name="$3"
+    local categories="$4"
+    cat >"$data_home/applications/$desktop_id" <<EOF
+[Desktop Entry]
+Type=Application
+Name=$name
+GenericName=$generic_name
+Categories=$categories
+Exec=/usr/bin/true
+EOF
+}
+
+write_application org.mozilla.firefox.desktop Firefox 'Web Browser' 'Network;WebBrowser;'
+write_application org.gnome.Geary.desktop Geary 'Mail Client' 'Network;Email;'
+write_application org.gnome.Nautilus.desktop Files 'File Manager' 'System;FileManager;'
+write_application org.gnome.Ptyxis.desktop Ptyxis Terminal 'System;TerminalEmulator;'
+write_application org.gnome.Rhythmbox3.desktop Rhythmbox 'Music Player' 'AudioVideo;Audio;Player;'
+write_application org.gnome.Loupe.desktop Loupe 'Image Viewer' 'Graphics;Viewer;'
+write_application org.gnome.Totem.desktop Videos 'Video Player' 'AudioVideo;Video;Player;'
+
+cat >"$config_home/autostart/nextcloud.desktop" <<'EOF'
+[Desktop Entry]
+Type=Application
+Name=Nextcloud
+Exec=nextcloud --background
+Hidden=true
+EOF
+
+cat >"$lua_fixture" <<'EOF'
+hl.on("hyprland.start", function()
+    hl.exec_cmd("quickshell --daemonize")
+    hl.exec_cmd("nextcloud --background")
+end)
+
+hl.on("hyprland.shutdown", function()
+    hl.exec_cmd("systemctl --user stop hyprland-session.target")
+end)
+EOF
+
+cat >"$fake_bin/xdg-settings" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+printf '%s\n' "$@" >>"$PANAMA_CALL_LOG"
+if [[ "$1" == "get" && "$2" == "default-web-browser" ]]; then
+    printf '%s\n' 'org.mozilla.firefox.desktop'
+    exit 0
+fi
+EOF
+chmod +x "$fake_bin/xdg-settings"
+
+cat >"$fake_bin/xdg-mime" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+printf '%s\n' "$@" >>"$PANAMA_CALL_LOG"
+if [[ "$1" == "query" && "$2" == "default" ]]; then
+    case "$3" in
+        x-scheme-handler/mailto) printf '%s\n' 'org.gnome.Geary.desktop' ;;
+        inode/directory) printf '%s\n' 'org.gnome.Nautilus.desktop' ;;
+        x-scheme-handler/terminal) printf '%s\n' 'org.gnome.Ptyxis.desktop' ;;
+        audio/mpeg) printf '%s\n' 'org.gnome.Rhythmbox3.desktop' ;;
+        image/png) printf '%s\n' 'org.gnome.Loupe.desktop' ;;
+        video/mp4) printf '%s\n' 'org.gnome.Totem.desktop' ;;
+        *) exit 91 ;;
+    esac
+    exit 0
+fi
+EOF
+chmod +x "$fake_bin/xdg-mime"
+
+export XDG_CONFIG_HOME="$config_home"
+export XDG_DATA_HOME="$data_home"
+export XDG_DATA_DIRS="$data_dirs"
+export PANAMA_HYPR_AUTOSTART="$lua_fixture"
+export PANAMA_CALL_LOG="$call_log"
+export PATH="$fake_bin:$PATH"
+
+snapshot="$($helper snapshot)" || fail 'snapshot command failed'
+[[ "$(rg --count '^get$' "$call_log")" == "1" ]] \
+    || fail 'browser handler was queried more than once'
+[[ "$(rg --count '^query$' "$call_log")" == "6" ]] \
+    || fail 'MIME handlers were queried more than once'
+jq -e '
+    .handlers == {
+        browser: "org.mozilla.firefox.desktop",
+        mail: "org.gnome.Geary.desktop",
+        files: "org.gnome.Nautilus.desktop",
+        terminal: "org.gnome.Ptyxis.desktop",
+        music: "org.gnome.Rhythmbox3.desktop",
+        images: "org.gnome.Loupe.desktop",
+        video: "org.gnome.Totem.desktop"
+    } and
+    .autostartEntries == [{id: "nextcloud.desktop", name: "Nextcloud", enabled: false}] and
+    (.luaAutostartEntries | length == 2) and
+    ([.luaAutostartEntries[] |
+        .enabled == true and .readOnly == true and
+        .source == "config/dot/hypr/autostart.lua" and
+        (.id | startswith("hyprland:")) and
+        (.name | length > 0) and (.command | length > 0)
+    ] | all) and
+    ([.luaAutostartEntries[].command] |
+        index("systemctl --user stop hyprland-session.target") == null)
+' <<<"$snapshot" >/dev/null || fail 'snapshot shape, handlers, or autostart parsing is incorrect'
+
+assert_call() {
+    local expected="$1"
+    local actual
+    actual="$(cat "$call_log")"
+    [[ "$actual" == "$expected" ]] || {
+        printf 'expected argv:\n%s\nactual argv:\n%s\n' "$expected" "$actual" >&2
+        fail 'setter did not pass separate arguments'
+    }
+}
+
+: >"$call_log"
+$helper set-default browser org.mozilla.firefox.desktop
+assert_call $'set\ndefault-web-browser\norg.mozilla.firefox.desktop'
+
+roles=(mail files terminal music images video)
+desktop_ids=(
+    org.gnome.Geary.desktop
+    org.gnome.Nautilus.desktop
+    org.gnome.Ptyxis.desktop
+    org.gnome.Rhythmbox3.desktop
+    org.gnome.Loupe.desktop
+    org.gnome.Totem.desktop
+)
+mime_types=(
+    x-scheme-handler/mailto
+    inode/directory
+    x-scheme-handler/terminal
+    audio/mpeg
+    image/png
+    video/mp4
+)
+for index in "${!roles[@]}"; do
+    : >"$call_log"
+    $helper set-default "${roles[$index]}" "${desktop_ids[$index]}"
+    assert_call $'default\n'"${desktop_ids[$index]}"$'\n'"${mime_types[$index]}"
+done
+
+: >"$call_log"
+if $helper set-default unknown org.mozilla.firefox.desktop >/dev/null 2>&1; then
+    fail 'unknown role was accepted'
+fi
+[[ ! -s "$call_log" ]] || fail 'unknown role reached an xdg command'
+
+if $helper set-default browser org.example.Missing.desktop >/dev/null 2>&1; then
+    fail 'undiscovered desktop id was accepted'
+fi
+if $helper set-default browser ../escape.desktop >/dev/null 2>&1; then
+    fail 'unsafe desktop id was accepted'
+fi
+
+$helper set-autostart nextcloud.desktop true
+rg --quiet '^Hidden=false$' "$config_home/autostart/nextcloud.desktop" \
+    || fail 'enabling autostart did not set Hidden=false'
+[[ "$(rg --count '^Hidden=' "$config_home/autostart/nextcloud.desktop")" == "1" ]] \
+    || fail 'enabling autostart duplicated Hidden'
+rg --quiet '^Exec=nextcloud --background$' "$config_home/autostart/nextcloud.desktop" \
+    || fail 'autostart update damaged another desktop key'
+jq -e '.autostartEntries == [{id: "nextcloud.desktop", name: "Nextcloud", enabled: true}]' \
+    <<<"$($helper snapshot)" >/dev/null || fail 'enabled state did not round-trip'
+
+$helper set-autostart nextcloud.desktop false
+rg --quiet '^Hidden=true$' "$config_home/autostart/nextcloud.desktop" \
+    || fail 'disabling autostart did not set Hidden=true'
+
+outside_entry="$test_root/outside.desktop"
+cp "$config_home/autostart/nextcloud.desktop" "$outside_entry"
+ln -s "$outside_entry" "$config_home/autostart/linked.desktop"
+if $helper set-autostart linked.desktop true >/dev/null 2>&1; then
+    fail 'autostart symlink escaping XDG config was accepted'
+fi
+rg --quiet '^Hidden=true$' "$outside_entry" || fail 'outside autostart file was modified'
+
+if $helper set-autostart missing.desktop true >/dev/null 2>&1; then
+    fail 'unknown autostart desktop id was accepted'
+fi
+if $helper set-autostart 'hyprland:1' false >/dev/null 2>&1; then
+    fail 'read-only compositor entry was accepted for mutation'
+fi
+
+printf 'default apps contract: PASS\n'

tests/quickshell/home-phone-settings-contract.sh

@@ -80,8 +80,12 @@ system_settings="$repo_dir/config/dot/quickshell/services/SystemSettings.qml"
 [[ -f "$home_page" ]] || fail 'HomePhonePage.qml is missing'
 [[ -f "$favorite_card" ]] || fail 'HomeFavoriteCard.qml is missing'
 [[ -f "$available_row" ]] || fail 'AvailableLightRow.qml is missing'
-assert_contains 'text: "Home & Phone"' "$home_page"
-assert_contains 'text: "Choose what appears in Control Center and keep phone continuity close at hand."' "$home_page"
+assert_contains 'SettingsPage {' "$home_page"
+assert_contains 'title: "Home & Phone"' "$home_page"
+assert_contains 'lede: "Choose what appears in Control Center and keep phone continuity close at hand."' "$home_page"
+if rg -q '^\s*Flickable \{' "$home_page"; then
+    fail 'HomePhonePage.qml still owns a copied Flickable scaffold'
+fi
 assert_contains 'Connected · ' "$home_page"
 assert_contains 'Last update unavailable · showing saved controls' "$home_page"
 assert_contains 'Authentication required' "$home_page"

tests/quickshell/home-preferences-contract.sh

@@ -4,6 +4,7 @@ set -euo pipefail
 
 repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 harness="$repo_dir/config/dot/quickshell/home-preferences-harness.qml"
+preferences="$repo_dir/config/dot/quickshell/config/HomePreferences.qml"
 state_home="$(mktemp -d /tmp/panama-home-preferences-state.XXXXXX)"
 
 fail() {
@@ -73,9 +74,7 @@ wait_for_file_content() {
     for _ in $(seq 1 40); do
         state_file="$(find "$state_home" -name panama-home.json -print -quit)"
         if [[ -n "$state_file" ]] \
-            && jq -e --argjson expected "$expected" \
-                '.initialized == $expected.initialized and .favorites == $expected.favorites' \
-                "$state_file" >/dev/null; then
+            && jq -e --argjson expected "$expected" '. == $expected' "$state_file" >/dev/null; then
             return
         fi
         sleep 0.1
@@ -83,6 +82,15 @@ wait_for_file_content() {
     fail 'preferences file did not contain the complete atomic update'
 }
 
+assert_reset_persists_without_debounce() {
+    local expected=$'    function resetHomeDefaults(): void {\n        persistTimer.stop();\n        values.favorites = [];\n        values.initialized = false;\n        root.saveError = "";\n        preferencesFile.writeAdapter();\n    }'
+    local actual
+
+    actual="$(sed -n '/^    function resetHomeDefaults(): void {$/,/^    }$/p' "$preferences")"
+    [[ "$actual" == "$expected" ]] \
+        || fail 'resetHomeDefaults must stop debounce before directly writing the default state'
+}
+
 # A leading JSON whitespace prevents qs from expanding the array into IPC
 # positional arguments; JSON.parse() intentionally accepts that whitespace.
 initial_ids=' ["light.kitchen","light.hall","light.desk"]'
@@ -90,7 +98,10 @@ expected='{"initialized":true,"favorites":[{"id":"light.desk","alias":""},{"id":
 expected_file='{"initialized":true,"favorites":[{"id":"light.desk","alias":""},{"id":"light.kitchen","alias":"Island"}]}'
 empty_expected='{"initialized":true,"favorites":[],"saveError":""}'
 empty_file='{"initialized":true,"favorites":[]}'
+reset_expected='{"initialized":false,"favorites":[],"saveError":""}'
+reset_file='{"initialized":false,"favorites":[]}'
 
+assert_reset_persists_without_debounce
 start_harness
 qs_for_harness ipc call home-pref-test initialize "$initial_ids" >/dev/null
 qs_for_harness ipc call home-pref-test alias light.kitchen '  Island  ' >/dev/null
@@ -99,9 +110,20 @@ qs_for_harness ipc call home-pref-test remove light.hall >/dev/null
 wait_for_status "$expected"
 wait_for_file_content "$expected_file"
 
+qs_for_harness ipc call home-pref-test reset >/dev/null
+wait_for_status "$reset_expected"
+wait_for_file_content "$reset_file"
+
 stop_harness
 start_harness
+wait_for_status "$reset_expected"
+
+qs_for_harness ipc call home-pref-test initialize "$initial_ids" >/dev/null
+qs_for_harness ipc call home-pref-test alias light.kitchen '  Island  ' >/dev/null
+qs_for_harness ipc call home-pref-test move light.desk 0 >/dev/null
+qs_for_harness ipc call home-pref-test remove light.hall >/dev/null
 wait_for_status "$expected"
+wait_for_file_content "$expected_file"
 
 qs_for_harness ipc call home-pref-test remove light.desk >/dev/null
 qs_for_harness ipc call home-pref-test remove light.kitchen >/dev/null

tests/quickshell/keybind-rebind-contract.sh

@@ -17,13 +17,25 @@ set -euo pipefail
 
 repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 harness="$repo_dir/config/dot/quickshell/keybinds-harness.qml"
-config_home="$(mktemp -d /tmp/panama-rebind-config.XXXXXX)"
+service="$repo_dir/config/dot/quickshell/services/Keybinds.qml"
 
 fail() {
     printf 'keybind rebind contract: %s\n' "$1" >&2
     exit 1
 }
 
+rg -Fq 'function overrideOccupantFor(chord: string, exceptShipped: string): string' "$service" \
+    || fail 'resetBind has no override collision guard'
+rg -Fq 'root.overrideOccupantFor(shipped, shipped)' "$service" \
+    || fail 'resetBind does not check whether another override occupies its shipped chord'
+
+if [[ "${PANAMA_KEYBINDS_STATIC_ONLY:-0}" == "1" ]]; then
+    printf 'keybind rebind contract: PASS (static)\n'
+    exit 0
+fi
+
+config_home="$(mktemp -d /tmp/panama-rebind-config.XXXXXX)"
+
 # The compositor is the live one -- that is the point -- but preferences are
 # isolated so this cannot leave an override in the user's real settings.
 # hyprctl reload re-reads the real settings file, so the compositor is only
@@ -87,6 +99,19 @@ sleep 0.5
 [[ "$(qs_for_harness ipc call keybinds-test overrideState | jq -r .count)" == "0" ]] \
     || fail 'resetAll left overrides behind'
 
+# Terminal moved away from its shipped chord, then Files moved into it.
+# Resetting Terminal must refuse instead of producing two binds on one chord.
+qs_for_harness ipc call keybinds-test seedResetCollision \
+    "$terminal" "SUPER + SHIFT + F9" "$files" >/dev/null
+sleep 0.2
+[[ "$(qs_for_harness ipc call keybinds-test resetBind "SUPER + SHIFT + F9")" == "false" ]] \
+    || fail 'resetBind reclaimed a shipped chord occupied by another override'
+collision_state="$(qs_for_harness ipc call keybinds-test overrideState)"
+jq -e --arg terminal "$terminal" --arg files "$files" \
+    '.count == 2 and .overrides[$terminal] == "SUPER + SHIFT + F9" and .overrides[$files] == $terminal and (.lastError | length > 0)' \
+    <<<"$collision_state" >/dev/null \
+    || fail "a refused reset changed overrides or gave no explanation: $collision_state"
+
 trap - EXIT
 cleanup
 printf 'keybind rebind contract: PASS\n'

tests/quickshell/settings-backup-contract.sh

@@ -22,10 +22,26 @@ cleanup() { rm -rf "$work"; }
 trap cleanup EXIT
 
 settings="$work/config/panama/settings.json"
+home="$work/state/panama/panama-home.json"
 backups="$work/state/panama/backups"
+transaction_dir="$work/state/panama/transactions/settings-restore"
 mkdir -p "$(dirname "$settings")"
 
 run() { XDG_CONFIG_HOME="$work/config" XDG_STATE_HOME="$work/state" "$helper" "$@"; }
+run_with() { XDG_CONFIG_HOME="$work/config" XDG_STATE_HOME="$work/state" env "$@"; }
+
+assert_transaction_clean() {
+    if [[ -d "$transaction_dir" ]] && find "$transaction_dir" -mindepth 1 -print -quit | rg -q .; then
+        fail 'restore left staged, rollback, or journal files behind'
+    fi
+    if find "$work" -type f \( \
+            -name '.settings-restore.*' -o -name '.home-restore.*' \
+            -o -name '*rollback*' -o -name '.journal.json.*' \
+            -o -name '.settings.json.*' -o -name '.panama-home.json.*' \
+        \) -print -quit | rg -q .; then
+        fail 'restore left a temporary target or journal file behind'
+    fi
+}
 
 # ── Nothing to back up ───────────────────────────────────────────────────────
 run save >/dev/null 2>&1 && fail 'backing up a missing settings file reported success'
@@ -33,15 +49,96 @@ run save >/dev/null 2>&1 && fail 'backing up a missing settings file reported su
 
 # ── A snapshot round-trips ───────────────────────────────────────────────────
 printf '{"gapsOut":24,"windowRounding":6}' >"$settings"
+mkdir -p "$(dirname "$home")"
+printf '{"initialized":true,"favorites":[{"id":"light.desk","alias":"Desk"}]}' >"$home"
 run save >/dev/null || fail 'save failed on a valid settings file'
 name="$(run list | jq -r '.[0].name')"
 [[ "$name" =~ ^settings-[0-9]{8}-[0-9]{9}\.json$ ]] || fail "unexpected snapshot name: $name"
 [[ "$(run list | jq -r '.[0].keys')" == "2" ]] || fail 'snapshot key count is wrong'
 
 printf '{"gapsOut":99}' >"$settings"
-run restore "$name" >/dev/null || fail 'restore failed'
+printf '{"initialized":false,"favorites":[]}' >"$home"
+restore_result="$(run restore "$name")" || fail 'restore failed'
 [[ "$(jq -r .gapsOut "$settings")" == "24" ]] || fail 'restore did not bring back the snapshot contents'
 [[ "$(jq -r .windowRounding "$settings")" == "6" ]] || fail 'restore lost a key'
+[[ "$(jq -r '.favorites[0].id' "$home")" == "light.desk" ]] || fail 'restore did not bring back Home favourites'
+[[ "$(jq -r '.favorites[0].alias' "$home")" == "Desk" ]] || fail 'restore lost a Home alias'
+jq -e '.home.present == true and .home.data.favorites[0].id == "light.desk"' <<<"$restore_result" >/dev/null \
+    || fail 'restore did not return Home state for the live service to reload'
+
+# ── Absence is part of a snapshot ───────────────────────────────────────────
+rm -f "$home"
+printf '{"gapsOut":30}' >"$settings"
+run save >/dev/null || fail 'save failed when Home state was absent'
+absent_name="$(run list | jq -r '.[0].name')"
+printf '{"initialized":true,"favorites":[{"id":"light.living_room","alias":"Living room"}]}' >"$home"
+absent_result="$(run restore "$absent_name")" || fail 'restore failed for a snapshot without Home state'
+[[ ! -e "$home" ]] || fail 'restore did not preserve the snapshot’s absent Home state'
+jq -e '.home.present == false and (.home | has("data") | not)' <<<"$absent_result" >/dev/null \
+    || fail 'restore did not return absent Home state for the live service to reload'
+
+# Desktop absence is symmetric: a Home-only snapshot removes a desktop file
+# created later and restores the Home store.
+rm -f "$settings"
+printf '{"initialized":true,"favorites":[{"id":"light.porch","alias":"Porch"}]}' >"$home"
+run save >/dev/null || fail 'save failed when desktop settings were absent'
+desktop_absent_name="$(run list | jq -r '.[0].name')"
+printf '{"gapsOut":47}' >"$settings"
+printf '{"initialized":false,"favorites":[]}' >"$home"
+run restore "$desktop_absent_name" >/dev/null || fail 'Home-only snapshot restore failed'
+[[ ! -e "$settings" ]] || fail 'restore did not preserve the snapshot’s absent desktop state'
+[[ "$(jq -r '.favorites[0].id' "$home")" == "light.porch" ]] \
+    || fail 'Home-only snapshot did not restore Home state'
+assert_transaction_clean
+
+printf '{"gapsOut":17}' >"$settings"
+
+# A legacy settings-only snapshot predates presence metadata. Its safest
+# interpretation is to restore desktop settings without deleting current Home
+# state that the old format knew nothing about.
+legacy="settings-20000101-010203004.json"
+printf '{"gapsOut":17}' >"$backups/$legacy"
+printf '{"initialized":true,"favorites":[{"id":"light.office","alias":"Office"}]}' >"$home"
+run restore "$legacy" >/dev/null || fail 'legacy snapshot restore failed'
+[[ "$(jq -r .gapsOut "$settings")" == "17" ]] || fail 'legacy snapshot did not restore desktop settings'
+[[ "$(jq -r '.favorites[0].id' "$home")" == "light.office" ]] || fail 'legacy snapshot destroyed Home state it did not describe'
+
+# `version` is a valid unknown desktop preference. It is only an envelope when
+# the complete v2 shape is present.
+legacy_version="settings-20000101-010203005.json"
+printf '{"version":77,"gapsOut":19}' >"$backups/$legacy_version"
+run restore "$legacy_version" >/dev/null || fail 'a legacy snapshot with an unknown version key was rejected'
+[[ "$(jq -r '.version' "$settings")" == "77" ]] || fail 'legacy version key was not restored as desktop data'
+[[ "$(jq -r '.favorites[0].id' "$home")" == "light.office" ]] || fail 'legacy version key changed Home state'
+
+# ── A durable journal recovers a process/power-loss split ────────────────────
+printf '{"gapsOut":28,"windowRounding":12}' >"$settings"
+printf '{"initialized":true,"favorites":[{"id":"light.desk","alias":"Snapshot"}]}' >"$home"
+run save >/dev/null || fail 'could not create crash-recovery snapshot'
+crash_name="$(run list | jq -r '.[0].name')"
+
+printf '{"gapsOut":91,"windowRounding":3}' >"$settings"
+printf '{"initialized":true,"favorites":[{"id":"light.office","alias":"Before crash"}]}' >"$home"
+run_with PANAMA_SETTINGS_BACKUP_TEST_CRASH=after-desktop "$helper" restore "$crash_name" >/dev/null 2>&1 \
+    && fail 'crash injection completed restore instead of terminating after the first replacement'
+[[ "$(jq -r '.gapsOut' "$settings")" == "28" ]] || fail 'crash did not occur after desktop replacement'
+[[ "$(jq -r '.favorites[0].alias' "$home")" == "Before crash" ]] || fail 'crash unexpectedly replaced Home state'
+[[ -f "$transaction_dir/journal.json" ]] || fail 'crash left no durable recovery journal'
+
+# Every entry point must recover before doing its own work. `list` is the least
+# invasive proof and must put both stores back to the pre-restore generation.
+run list >/dev/null || fail 'next invocation could not recover the interrupted restore'
+[[ "$(jq -r '.gapsOut' "$settings")" == "91" ]] || fail 'recovery did not roll desktop settings back'
+[[ "$(jq -r '.favorites[0].alias' "$home")" == "Before crash" ]] || fail 'recovery did not keep Home state in the same generation'
+assert_transaction_clean
+
+# Cleanup is installed before staging. A deterministic pre-journal failure
+# must leave both destinations untouched and no hidden artifacts behind.
+run_with PANAMA_SETTINGS_BACKUP_TEST_FAIL=after-desktop-stage "$helper" restore "$crash_name" >/dev/null 2>&1 \
+    && fail 'staging failure injection unexpectedly restored the snapshot'
+[[ "$(jq -r '.gapsOut' "$settings")" == "91" ]] || fail 'staging failure changed desktop settings'
+[[ "$(jq -r '.favorites[0].alias' "$home")" == "Before crash" ]] || fail 'staging failure changed Home state'
+assert_transaction_clean
 
 # ── Restoring snapshots what it replaced, so it is undoable ──────────────────
 count="$(run list | jq 'length')"
@@ -52,12 +149,44 @@ bad="settings-19990101-000000000.json"
 mkdir -p "$backups"
 printf '{ truncated' >"$backups/$bad"
 run restore "$bad" >/dev/null 2>&1 && fail 'a corrupt snapshot was restored'
-[[ "$(jq -r .gapsOut "$settings")" == "24" ]] || fail 'a refused restore still damaged the settings file'
+[[ "$(jq -r .gapsOut "$settings")" == "91" ]] || fail 'a refused restore still damaged the settings file'
+
+invalid_home="settings-19990101-000000001.json"
+jq -n '{
+    version: 2,
+    desktop: {present: true, data: {gapsOut: 88}},
+    home: {present: true, data: {
+        initialized: true,
+        favorites: [
+            {id: "light.desk", alias: "Desk"},
+            {id: "light.desk", alias: "Duplicate"}
+        ]
+    }}
+}' >"$backups/$invalid_home"
+run restore "$invalid_home" >/dev/null 2>&1 && fail 'a snapshot with duplicate Home favourites was restored'
+[[ "$(jq -r .gapsOut "$settings")" == "91" ]] || fail 'an invalid Home snapshot still damaged desktop settings'
+
+printf '{ truncated' >"$home"
+run save >/dev/null 2>&1 && fail 'a corrupt Home state file was backed up'
+printf '{"initialized":true,"favorites":[]}' >"$home"
+
+# ── The live service can sync its private Home state before save ─────────────
+rm -f "$home"
+printf '{"gapsOut":21}' >"$settings"
+live_home='{"initialized":true,"favorites":[{"id":"light.studio","alias":"Studio"}]}'
+run save "$live_home" >/dev/null || fail 'save rejected valid live Home state'
+live_name="$(run list | jq -r '.[0].name')"
+jq -e '.home.present == true and .home.data.favorites[0].alias == "Studio"' \
+    "$backups/$live_name" >/dev/null \
+    || fail 'live Home state was not written to the canonical snapshot'
 
 # ── A snapshot cannot name a path outside the backup directory ───────────────
 printf '{"pwned":true}' >"$work/outside.json"
 run restore "../../outside.json" >/dev/null 2>&1 && fail 'a traversing snapshot name was accepted'
 run restore "/etc/passwd" >/dev/null 2>&1 && fail 'an absolute snapshot path was accepted'
+link_name="settings-20000101-000000001.json"
+ln -s "$work/outside.json" "$backups/$link_name"
+run restore "$link_name" >/dev/null 2>&1 && fail 'a snapshot symlink escaping the backup directory was accepted'
 jq -e 'has("pwned") | not' "$settings" >/dev/null || fail 'a file outside the backup directory was restored'
 
 # ── A snapshot that is not listed is refused ─────────────────────────────────

tests/quickshell/settings-backup-live-contract.sh

@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+
+# Behavioral coverage for the QML handoff after the helper commits a restore.
+# The harness has a unique shell identity, isolated XDG roots, and fake external
+# consumers. It records the real SettingsBackup call order without touching the
+# daily-driver shell, compositor, keymap, or wallpaper.
+
+set -euo pipefail
+
+repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+service="$repo_dir/config/dot/quickshell/services/SettingsBackup.qml"
+harness="$repo_dir/config/dot/quickshell/settings-backup-harness.qml"
+work="$(mktemp -d /tmp/panama-settings-backup-live.XXXXXX)"
+
+fail() {
+    printf 'settings backup live contract: %s\n' "$1" >&2
+    exit 1
+}
+
+qs_test() {
+    XDG_CONFIG_HOME="$work/config" XDG_STATE_HOME="$work/state" qs -p "$harness" "$@"
+}
+
+cleanup() {
+    qs_test kill >/dev/null 2>&1 || true
+    rm -rf "$work"
+}
+trap cleanup EXIT
+
+# The production command boundary must remain argv-only.
+rg -Fq 'actionRun.exec([root.helperPath, "save", root.serialiseHomeState()]);' "$service" \
+    || fail 'save does not pass live Home state as one argument'
+rg -Fq 'actionRun.exec([root.helperPath, "restore", name]);' "$service" \
+    || fail 'restore is not executed through an argument array'
+if rg -q 'bash.*-c|sh.*-c' "$service"; then
+    fail 'the restore service constructs a shell command'
+fi
+
+# The harness replaces these seams, while these mappings prove the production
+# defaults still delegate to Panama's existing public service APIs.
+for mapping in \
+    'HomePreferences.resetHomeDefaults();' \
+    'HomePreferences.initialize(ids);' \
+    'HomePreferences.setAlias(id, alias);' \
+    'DesktopPreferences.reload();' \
+    'SystemSettings.applyPersistedDisplayPolicy();' \
+    'Keybinds.applyReload();' \
+    'Wallpaper.set(path);' \
+    'Quickshell.reload(false);'; do
+    rg -Fq "$mapping" "$service" || fail "production restore seam is missing: $mapping"
+done
+
+qs_test --daemonize >"$work/quickshell.log" 2>&1
+ready=false
+for _ in $(seq 1 60); do
+    if qs_test ipc show 2>/dev/null | rg -q '^target settings-backup-behavior$'; then
+        ready=true
+        break
+    fi
+    sleep 0.1
+done
+if [[ "$ready" != true ]]; then
+    sed -n '1,200p' "$work/quickshell.log" >&2
+    fail 'isolated SettingsBackup harness did not start'
+fi
+
+qs_test ipc call settings-backup-behavior reset >/dev/null
+payload='{"restored":"settings-20260818-010203004.json","home":{"present":true,"data":{"initialized":true,"favorites":[{"id":"light.desk","alias":"Desk"},{"id":"light.office","alias":"Office"}]}}}'
+[[ "$(qs_test ipc call settings-backup-behavior apply "$payload")" == "true" ]] \
+    || fail 'valid restore output was rejected'
+
+status=""
+for _ in $(seq 1 50); do
+    status="$(qs_test ipc call settings-backup-behavior status)"
+    jq -e '.calls[-1] == "shell.reload"' <<<"$status" >/dev/null 2>&1 && break
+    sleep 0.1
+done
+jq -e '
+    .calls == [
+        "home.reset",
+        "home.initialize:light.desk,light.office",
+        "home.alias:light.desk=Desk",
+        "home.alias:light.office=Office",
+        "desktop.reload",
+        "system.apply",
+        "keybinds.reload",
+        "wallpaper.set:/tmp/restored-wallpaper.jpg",
+        "shell.reload"
+    ]
+    and .initialized == true
+    and .favorites == [
+        {"id":"light.desk","alias":"Desk"},
+        {"id":"light.office","alias":"Office"}
+    ]
+' <<<"$status" >/dev/null || fail "restore handoff order/state was wrong: $status"
+
+# Invalid output is rejected before Home state or external consumers change.
+qs_test ipc call settings-backup-behavior reset >/dev/null
+invalid='{"home":{"present":true,"data":{"initialized":true,"favorites":[{"id":"light.desk","alias":"One"},{"id":"light.desk","alias":"Two"}]}}}'
+[[ "$(qs_test ipc call settings-backup-behavior apply "$invalid")" == "false" ]] \
+    || fail 'duplicate Home state was accepted'
+status="$(qs_test ipc call settings-backup-behavior status)"
+jq -e '.calls == [] and .initialized == false and .favorites == []' <<<"$status" >/dev/null \
+    || fail 'invalid restore output caused partial live mutations'
+
+# An absent Home generation uses the same ordered external handoff but leaves
+# the live Home service reset rather than manufacturing an initialized store.
+qs_test ipc call settings-backup-behavior reset >/dev/null
+absent='{"restored":"settings-20260818-010203005.json","home":{"present":false}}'
+[[ "$(qs_test ipc call settings-backup-behavior apply "$absent")" == "true" ]] \
+    || fail 'absent Home restore output was rejected'
+for _ in $(seq 1 50); do
+    status="$(qs_test ipc call settings-backup-behavior status)"
+    jq -e '.calls[-1] == "shell.reload"' <<<"$status" >/dev/null 2>&1 && break
+    sleep 0.1
+done
+jq -e '
+    .calls == [
+        "home.reset",
+        "desktop.reload",
+        "system.apply",
+        "keybinds.reload",
+        "wallpaper.set:/tmp/restored-wallpaper.jpg",
+        "shell.reload"
+    ]
+    and .initialized == false
+    and .favorites == []
+' <<<"$status" >/dev/null || fail "absent Home handoff was wrong: $status"
+
+trap - EXIT
+cleanup
+printf 'settings backup live contract: PASS\n'

tests/quickshell/settings-commit-reset-contract.sh

@@ -19,6 +19,7 @@ set -euo pipefail
 
 repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 harness="$repo_dir/config/dot/quickshell/settings-system-harness.qml"
+system_settings="$repo_dir/config/dot/quickshell/services/SystemSettings.qml"
 
 # Preferences are committed to $XDG_CONFIG_HOME, and the Home store lives under
 # $XDG_STATE_HOME. Both are isolated so this contract cannot touch the real
@@ -31,6 +32,12 @@ fail() {
     exit 1
 }
 
+rg -Fq 'HomePreferences.resetHomeDefaults();' "$system_settings" \
+    || fail 'restoreDefaults does not use the durable Home reset boundary'
+if rg -q 'HomePreferences\.(favorites|initialized)\s*=' "$system_settings"; then
+    fail 'restoreDefaults mutates Home aliases instead of using resetHomeDefaults'
+fi
+
 qs_for_harness() {
     XDG_CONFIG_HOME="$config_home" XDG_STATE_HOME="$state_home" qs -p "$harness" "$@"
 }

tests/quickshell/settings-hardcoded-values-contract.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+# Public Settings.qml values are the compatibility surface consumed throughout
+# the shell. Once a value becomes user-configurable, this file must read it from
+# DesktopPreferences rather than keeping a second hardcoded source of truth.
+
+set -euo pipefail
+
+repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+settings="$repo_dir/config/dot/quickshell/config/Settings.qml"
+
+fail() {
+    printf 'settings hardcoded values contract: %s\n' "$1" >&2
+    exit 1
+}
+
+properties=(
+    temperatureUnit
+    weatherRefreshMinutes
+    vitalsIntervalMs
+    notificationTimeoutMs
+    notificationTimeoutCriticalMs
+    notificationHistoryLimit
+    maxVisibleToasts
+    screenshotDir
+    recordingDir
+    recorderArgs
+)
+
+for property in "${properties[@]}"; do
+    count="$(rg -c \
+        "^[[:space:]]*readonly property [A-Za-z]+ ${property}: DesktopPreferences\\.get\\(\"${property}\"\\)[[:space:]]*(//.*)?$" \
+        "$settings" || true)"
+    [[ "$count" == "1" ]] \
+        || fail "$property must use DesktopPreferences.get(\"$property\") exactly once"
+done
+
+# dockPinned was already migrated on the shared branch. Pinning it here keeps a
+# later bulk edit from accidentally restoring the old hardcoded app list.
+rg -q '^[[:space:]]*readonly property var dockPinned: DesktopPreferences\.get\("dockPinned"\)[[:space:]]*$' "$settings" \
+    || fail 'dockPinned no longer reads DesktopPreferences exactly'
+
+printf 'settings hardcoded values contract: PASS\n'

tests/quickshell/settings-pages-contract.sh

@@ -3,6 +3,85 @@
 set -euo pipefail
 
 repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+
+fail() {
+    printf 'settings pages contract: %s\n' "$1" >&2
+    exit 1
+}
+
+pages=(Home Displays Connectivity Sound Notifications ScreenIntelligence Services About)
+for page in "${pages[@]}"; do
+    page_file="$repo_dir/config/dot/quickshell/modules/settings/${page}Page.qml"
+    [[ -f "$page_file" ]] || fail "${page}Page.qml is missing"
+
+    root_type="$(awk '
+        /^import / { next }
+        /^[[:space:]]*\/\// { next }
+        /^[[:space:]]*$/ { next }
+        match($0, /^[[:space:]]*([A-Za-z][A-Za-z0-9]*)[[:space:]]*\{/, found) {
+            print found[1]
+            exit
+        }
+    ' "$page_file")"
+    [[ "$root_type" == "SettingsPage" ]] \
+        || fail "${page}Page.qml root is ${root_type:-unknown}, expected SettingsPage"
+    ! rg -q '^[[:space:]]*Flickable[[:space:]]*\{' "$page_file" \
+        || fail "${page}Page.qml still copies the page Flickable scaffold"
+done
+
+require_row() {
+    local file="$1"
+    local row_type="$2"
+    local setting="$3"
+
+    python3 - "$file" "$row_type" "$setting" <<'PY' || \
+        fail "$(basename "$file") is missing $row_type for $setting"
+import re
+import sys
+
+text = open(sys.argv[1], encoding="utf-8").read()
+row_type = re.escape(sys.argv[2])
+setting = re.escape(sys.argv[3])
+pattern = rf"{row_type}\s*\{{(?:(?!\n\s*[A-Z][A-Za-z0-9]*\s*\{{).)*?setting\s*:\s*\"{setting}\""
+raise SystemExit(0 if re.search(pattern, text, re.S) else 1)
+PY
+}
+
+home_page="$repo_dir/config/dot/quickshell/modules/settings/HomePage.qml"
+require_row "$home_page" ChoiceRow temperatureUnit
+require_row "$home_page" SliderRow weatherRefreshMinutes
+require_row "$home_page" SliderRow vitalsIntervalMs
+
+notifications_page="$repo_dir/config/dot/quickshell/modules/settings/NotificationsPage.qml"
+for setting in notificationTimeoutMs notificationTimeoutCriticalMs notificationHistoryLimit maxVisibleToasts; do
+    require_row "$notifications_page" SliderRow "$setting"
+done
+python3 - "$notifications_page" <<'PY' || fail 'critical notification timeout does not render zero as Never'
+import re
+import sys
+
+text = open(sys.argv[1], encoding="utf-8").read()
+block = re.search(
+    r'SliderRow\s*\{(?:(?!\n\s*[A-Z][A-Za-z0-9]*\s*\{).)*?'
+    r'setting\s*:\s*"notificationTimeoutCriticalMs"(?P<tail>.*?)\n\s*\}',
+    text,
+    re.S,
+)
+raise SystemExit(0 if block and re.search(r'zeroLabel\s*:\s*"Never"', block.group(0)) else 1)
+PY
+
+intelligence_page="$repo_dir/config/dot/quickshell/modules/settings/ScreenIntelligencePage.qml"
+require_row "$intelligence_page" ChoiceRow screenshotDir
+require_row "$intelligence_page" ChoiceRow recordingDir
+require_row "$intelligence_page" ChoiceRow recorderArgs
+
+# The source-only contract is safe during a shared Quickshell quiet window.
+# The existing compositor integration checks remain available explicitly.
+if [[ "${PANAMA_SETTINGS_STATIC_ONLY:-0}" == "1" ]]; then
+    printf 'settings pages contract: PASS (static)\n'
+    exit 0
+fi
+
 state_home="$(mktemp -d /tmp/panama-settings-pages-state.XXXXXX)"
 source_config_path="$repo_dir/config/dot/quickshell"
 config_path="$state_home/quickshell"
@@ -58,11 +137,6 @@ exit 97
 EOF
 chmod +x "$test_bin/flatpak"
 
-fail() {
-    printf 'settings pages contract: %s\n' "$1" >&2
-    exit 1
-}
-
 qs_for_test() {
     PATH="$test_bin:$PATH" QS_CONFIG_PATH="$config_path" XDG_STATE_HOME="$state_home" \
         qs -p "$config_path" "$@"

tests/quickshell/settings-sidebar-layout-contract.sh

@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+sidebar="$repo_dir/config/dot/quickshell/modules/settings/SettingsSidebar.qml"
+
+fail() {
+    printf 'settings sidebar layout contract: %s\n' "$1" >&2
+    exit 1
+}
+
+python3 - "$sidebar" <<'PY' || fail 'sidebar does not keep its header and footer pinned around one vertical scroll surface'
+import re
+import sys
+
+
+text = open(sys.argv[1], encoding="utf-8").read()
+
+
+def object_block(type_name: str, object_id: str) -> tuple[int, int, str]:
+    pattern = re.compile(
+        rf"\b{re.escape(type_name)}\s*\{{(?:(?!\n\s*[A-Za-z][A-Za-z0-9.]*\s*\{{).)*?"
+        rf"\bid\s*:\s*{re.escape(object_id)}\b",
+        re.S,
+    )
+    match = pattern.search(text)
+    if not match:
+        raise AssertionError(f"missing {type_name} id {object_id}")
+
+    start = match.start()
+    opening = text.index("{", start)
+    depth = 0
+    in_string = False
+    escaped = False
+    index = opening
+    while index < len(text):
+        character = text[index]
+        if in_string:
+            if escaped:
+                escaped = False
+            elif character == "\\":
+                escaped = True
+            elif character == '"':
+                in_string = False
+        elif character == '"':
+            in_string = True
+        elif character == "{":
+            depth += 1
+        elif character == "}":
+            depth -= 1
+            if depth == 0:
+                return start, index + 1, text[start:index + 1]
+        index += 1
+    raise AssertionError(f"unterminated {type_name} id {object_id}")
+
+
+try:
+    header_start, header_end, header = object_block("Column", "sidebarHeader")
+    scroll_start, scroll_end, scroll = object_block("Flickable", "sidebarScroll")
+    footer_start, _, footer = object_block("Rectangle", "healthFooter")
+
+    assert header_start < scroll_start < scroll_end < footer_start
+    assert re.search(r"anchors\.top\s*:\s*parent\.top", header)
+    assert re.search(r"\bid\s*:\s*searchInput\b", header)
+
+    assert re.search(r"anchors\.top\s*:\s*sidebarHeader\.bottom", scroll)
+    assert re.search(r"anchors\.bottom\s*:\s*healthFooter\.top", scroll)
+    assert re.search(r"contentWidth\s*:\s*width", scroll)
+    assert re.search(r"contentHeight\s*:\s*scrollContent\.implicitHeight", scroll)
+    assert re.search(r"flickableDirection\s*:\s*Flickable\.VerticalFlick", scroll)
+    assert re.search(r"boundsBehavior\s*:\s*Flickable\.StopAtBounds", scroll)
+    assert re.search(r"clip\s*:\s*true", scroll)
+    assert scroll.count("Flickable {") == 1
+
+    assert re.search(r"\bid\s*:\s*scrollContent\b", scroll)
+    assert re.search(r"\bid\s*:\s*searchResults\b", scroll)
+    assert re.search(r"\bid\s*:\s*navigationList\b", scroll)
+    assert re.search(r"visible\s*:\s*root\.query\s*!==\s*\"\"", scroll)
+    assert re.search(r"visible\s*:\s*root\.query\s*===\s*\"\"", scroll)
+    assert re.search(r"anchors\.bottom\s*:\s*parent\.bottom", footer)
+except AssertionError as error:
+    print(error, file=sys.stderr)
+    raise SystemExit(1)
+PY
+
+printf 'settings sidebar layout contract: PASS\n'