refactor: remove low-memory desktop mode

.github/workflows/ci.yml

@@ -590,8 +590,8 @@ jobs:
 
   native-capsule:
     # The capsule crates compile into the desktop shells. They get their own macOS + Windows
-    # runners only because their `ui,host` feature set is not built anywhere else (the shells
-    # use `build:native-capsule:dev`), and that warm cache makes the job ~40 s. It is gated on
+    # runners only because their `ui,host` feature set is not built anywhere else, and that
+    # warm cache makes the job ~40 s. It is gated on
     # its own area, so the common PR pays zero runners for it: measured on run 40510306688,
     # moving these three commands into `cross-platform` cost 117 s on the critical-path Windows
     # job, which is more than the two runners it saved.
@@ -736,10 +736,6 @@ jobs:
         if: runner.os == 'macOS'
         run: npm test
 
-      # Direct Cargo checks do not execute Tauri beforeBuildCommand.
-      - name: Build native capsule for Tauri checks
-        run: npm run build:native-capsule:dev
-
       - name: Install pinned Codex CLI for sandbox contract
         if: runner.os == 'macOS'
         run: npm install --global @openai/codex@0.146.0
@@ -880,8 +876,6 @@ jobs:
             openless-all/app/src-tauri/backend-tests -> target
       - run: npm ci
       - run: npm run build
-      - name: Build native capsule for Tauri checks
-        run: npm run build:native-capsule:dev
       - name: Check Tauri backend with Rust 1.99 MSRV
         run: cargo +1.99.0 check --locked --manifest-path src-tauri/Cargo.toml --timings
       - name: Compile backend tests with Rust 1.99 MSRV

openless-all/app/crates/openless-core/src/cloud_sync_e2ee_documents/registry.rs

@@ -172,13 +172,6 @@ pub const PREFERENCE_FIELDS: &[PreferenceField] = &[
         shape: PreferenceShape::Text,
         reason: "device_bound",
     },
-    PreferenceField {
-        rust_name: "low_memory_background_enabled",
-        key: "lowMemoryBackgroundEnabled",
-        class: PreferenceClass::DeviceProfile,
-        shape: PreferenceShape::Boolean,
-        reason: "device_bound",
-    },
     PreferenceField {
         rust_name: "low_latency_dictation_enabled",
         key: "lowLatencyDictationEnabled",

openless-all/app/crates/openless-core/src/preferences.rs

@@ -126,6 +126,7 @@ fn strip_local_only_preferences(value: &mut serde_json::Value) {
         object.remove("lowLatencyDictationEnabled");
         object.remove("echoCancellationEnabled");
         object.remove("audioDsp");
+        // Retire the removed low-memory mode from legacy sync payloads.
         object.remove("lowMemoryBackgroundEnabled");
     }
 }

openless-all/app/crates/openless-core/src/shared_types.rs

@@ -440,9 +440,6 @@ pub struct UserPreferences {
     /// This is opt-in because the OS microphone indicator remains active while enabled.
     #[serde(default)]
     pub low_latency_dictation_enabled: bool,
-    /// Desktop-only UI resource policy. Applied on the next application launch.
-    #[serde(default)]
-    pub low_memory_background_enabled: bool,
     /// Play an instantly synthesized cue when the recording hotkey enters the
     /// recording state ("recording started"). Default on; can be disabled in
     /// the "Recording & Input" settings. The cue is synthesized by the capsule
@@ -1053,8 +1050,6 @@ struct UserPreferencesWire {
     stable_transcription_enabled: bool,
     #[serde(default)]
     low_latency_dictation_enabled: bool,
-    #[serde(default)]
-    low_memory_background_enabled: bool,
     #[serde(default = "default_true")]
     audio_cue_on_record: bool,
     #[serde(default)]
@@ -1344,7 +1339,6 @@ impl Default for UserPreferencesWire {
             audio_dsp: prefs.audio_dsp.normalized(),
             stable_transcription_enabled: prefs.stable_transcription_enabled,
             low_latency_dictation_enabled: prefs.low_latency_dictation_enabled,
-            low_memory_background_enabled: prefs.low_memory_background_enabled,
             audio_cue_on_record: prefs.audio_cue_on_record,
             silence_auto_stop_enabled: prefs.silence_auto_stop_enabled,
             silence_auto_stop_seconds: prefs.silence_auto_stop_seconds,
@@ -1569,7 +1563,6 @@ impl<'de> Deserialize<'de> for UserPreferences {
             audio_dsp: wire.audio_dsp.normalized(),
             stable_transcription_enabled: wire.stable_transcription_enabled,
             low_latency_dictation_enabled: wire.low_latency_dictation_enabled,
-            low_memory_background_enabled: wire.low_memory_background_enabled,
             audio_cue_on_record: wire.audio_cue_on_record,
             silence_auto_stop_enabled: wire.silence_auto_stop_enabled,
             silence_auto_stop_seconds: wire.silence_auto_stop_seconds,
@@ -1972,7 +1965,6 @@ impl Default for UserPreferences {
             audio_dsp: Default::default(),
             stable_transcription_enabled: false,
             low_latency_dictation_enabled: false,
-            low_memory_background_enabled: false,
             audio_cue_on_record: true,
             silence_auto_stop_enabled: false,
             silence_auto_stop_seconds: default_silence_auto_stop_seconds(),
@@ -4057,22 +4049,3 @@ mod capsule_transcript_preferences_tests {
         );
     }
 }
-
-#[cfg(test)]
-mod low_memory_background_preferences_tests {
-    use super::UserPreferences;
-
-    #[test]
-    fn low_memory_background_is_opt_in_and_keeps_low_latency_preference() {
-        let old: UserPreferences = serde_json::from_str("{}").unwrap();
-        assert!(!old.low_memory_background_enabled);
-        let preferences: UserPreferences = serde_json::from_str(
-            r#"{"lowMemoryBackgroundEnabled":true,"lowLatencyDictationEnabled":true}"#,
-        )
-        .unwrap();
-        let restored: UserPreferences =
-            serde_json::from_value(serde_json::to_value(preferences).unwrap()).unwrap();
-        assert!(restored.low_memory_background_enabled);
-        assert!(restored.low_latency_dictation_enabled);
-    }
-}

openless-all/app/harmony/ipc-audit.json

@@ -1,8 +1,8 @@
 {
   "scope": "Static shared IPC command coverage; excludes event subscriptions, dynamic commands and desktop-only calls outside src/lib/ipc.",
-  "total": 200,
+  "total": 199,
   "wired": 103,
-  "missing": 97,
+  "missing": 96,
   "commands": [
     {
       "name": "accept_pending_correction",
@@ -837,13 +837,6 @@
       ],
       "implementation": "rust"
     },
-    {
-      "name": "native_capsule_status",
-      "calledFrom": [
-        "src/lib/ipc/settings.ts"
-      ],
-      "implementation": "unimplemented"
-    },
     {
       "name": "open_android_local_migration",
       "calledFrom": [

openless-all/app/package.json

@@ -33,9 +33,7 @@
     "check:android-shizuku-scaffolding": "node scripts/merge-android-shizuku-manifest.test.mjs && node scripts/patch-android-shizuku-deps.test.mjs",
     "format": "prettier --write \"src/**/*.{ts,tsx,css}\" \"android/frontend/**/*.{ts,tsx}\" \"scripts/**/*.{js,mjs,sh}\" \"*.{ts,json,html,sh}\" \"assets/remote-input/*.{js,css,html}\"",
     "format:check": "prettier --check \"src/**/*.{ts,tsx,css}\" \"android/frontend/**/*.{ts,tsx}\" \"scripts/**/*.{js,mjs,sh}\" \"*.{ts,json,html,sh}\" \"assets/remote-input/*.{js,css,html}\"",
-    "test:ui-motion": "playwright test",
-    "build:native-capsule": "node scripts/build-native-capsule.mjs",
-    "build:native-capsule:dev": "node scripts/build-native-capsule.mjs --debug"
+    "test:ui-motion": "playwright test"
   },
   "dependencies": {
     "@base-ui/react": "^1.6.0",