Declare the Sound and notification-rule manifest entries

Registers the components and schema key the codex agent needs for the
Sound page and per-application notification rules, so its branches
compile against a manifest that already holds them rather than each
carrying a conflicting edit to the same file.

An absent notification rule is permissive rather than denying: a newly
installed application must be able to notify without an entry being
written for it first.

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

config/dot/quickshell/config/PreferenceSchema.qml

@@ -521,6 +521,21 @@ Singleton {
             detail: "Resolution, scale, and rotation per connected display"
         },
 
+        // ── Per-application notification rules ──────────────────────────────
+        // { "<appId>": { enabled, showOnLockScreen, showContentOnLockScreen } }
+        //
+        // Absent means "no rule", which is not the same as a rule that allows
+        // everything: a new application must be able to notify without needing
+        // an entry written for it first. services/Notifs.qml treats a missing
+        // entry as permissive and Do Not Disturb remains an override on top,
+        // rather than being duplicated per application.
+        {
+            key: "notificationAppRules", type: "json", def: ({}), group: "notifications",
+            internal: true,
+            label: "Application notification rules",
+            detail: "Per-application notification and lock-screen visibility preferences"
+        },
+
         // ── Internal ────────────────────────────────────────────────────────
         {
             key: "lastPage", type: "string", def: "home", group: "internal",

config/dot/quickshell/modules/settings/qmldir

@@ -40,3 +40,6 @@ DisplayModePicker 1.0 DisplayModePicker.qml
 WifiPanel 1.0 WifiPanel.qml
 BluetoothPanel 1.0 BluetoothPanel.qml
 PasswordField 1.0 PasswordField.qml
+AudioBalance 1.0 AudioBalance.qml
+SoundDeviceList 1.0 SoundDeviceList.qml
+SoundDeviceRow 1.0 SoundDeviceRow.qml