agent: lumotia-rebrand — tracing filter targets

Phase 4 of the rebrand cascade. Updates the default RUST_LOG filter
in src-tauri/src/lib.rs and all 'target: "magnotia_startup"' string
literals across src-tauri/src/lib.rs and src-tauri/src/commands/models.rs.

Default filter (before):
  warn,magnotia=info,lumotia_lib=info,lumotia_audio=info,
  magnotia_startup=info,lumotia_hotkey=info,lumotia_ai_formatting=info

Default filter (after):
  warn,lumotia=info,lumotia_lib=info,lumotia_core=info,
  lumotia_audio=info,lumotia_hotkey=info,lumotia_ai_formatting=info,
  lumotia_llm=info,lumotia_storage=info,lumotia_transcription=info,
  lumotia_startup=info

magnotia_startup was a logical tracing target (not a crate); renamed
to lumotia_startup for consistency. magnotia_lib was already renamed
to lumotia_lib in Phase 2. Added per-crate filter entries for parity
across the workspace.

cargo build --workspace passes. cargo test --workspace: 330 pass, 0 fail.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src-tauri/src/commands/models.rs

@@ -208,11 +208,11 @@ pub fn prewarm_default_model(whisper_engine: Arc<LocalEngine>) {
                 let options = TranscriptionOptions::default();
                 match whisper_engine.transcribe_sync(&silence, &options) {
                     Ok(_) => tracing::info!(
-                        target: "magnotia_startup",
+                        target: "lumotia_startup",
                         "Whisper warm-up inference complete"
                     ),
                     Err(e) => tracing::warn!(
-                        target: "magnotia_startup",
+                        target: "lumotia_startup",
                         error = %e,
                         "Whisper warm-up inference failed"
                     ),
@@ -223,16 +223,16 @@ pub fn prewarm_default_model(whisper_engine: Arc<LocalEngine>) {
 
         match result {
             Ok(Ok(())) => tracing::info!(
-                target: "magnotia_startup",
+                target: "lumotia_startup",
                 "Whisper model pre-warmed successfully"
             ),
             Ok(Err(e)) => tracing::warn!(
-                target: "magnotia_startup",
+                target: "lumotia_startup",
                 error = %e,
                 "Whisper pre-warm failed"
             ),
             Err(e) => tracing::error!(
-                target: "magnotia_startup",
+                target: "lumotia_startup",
                 error = %e,
                 "Whisper pre-warm task panicked"
             ),

src-tauri/src/lib.rs

@@ -123,7 +123,7 @@ fn warn_if_x11_env_unset_on_wayland() {
     let warn_if_unset = |key: &str, value: &str, why: &str| {
         if std::env::var_os(key).is_none() {
             tracing::warn!(
-                target: "magnotia_startup",
+                target: "lumotia_startup",
                 key,
                 expected = value,
                 why,
@@ -162,7 +162,7 @@ fn init_tracing() {
     TRACING_INIT.call_once(|| {
         let env_filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| {
             EnvFilter::new(
-                "warn,magnotia=info,lumotia_lib=info,lumotia_audio=info,magnotia_startup=info,lumotia_hotkey=info,lumotia_ai_formatting=info",
+                "warn,lumotia=info,lumotia_lib=info,lumotia_core=info,lumotia_audio=info,lumotia_hotkey=info,lumotia_ai_formatting=info,lumotia_llm=info,lumotia_storage=info,lumotia_transcription=info,lumotia_startup=info",
             )
         });
 
@@ -227,7 +227,7 @@ pub fn run() {
                 let db = init_db(&db_path)
                     .await
                     .map_err(|e| Box::new(e) as Box<dyn std::error::Error>)?;
-                tracing::info!(target: "magnotia_startup", elapsed_ms = t0.elapsed().as_millis(), "DB init complete");
+                tracing::info!(target: "lumotia_startup", elapsed_ms = t0.elapsed().as_millis(), "DB init complete");
 
                 // Prune old `error_log` rows so the table doesn't grow unbounded
                 // across months of dogfooding. Best-effort — a prune failure is
@@ -235,20 +235,20 @@ pub fn run() {
                 let t_prune = Instant::now();
                 match prune_error_log(&db, ERROR_LOG_RETENTION_DAYS).await {
                     Ok(n) if n > 0 => tracing::info!(
-                        target: "magnotia_startup",
+                        target: "lumotia_startup",
                         rows_removed = n,
                         retention_days = ERROR_LOG_RETENTION_DAYS,
                         elapsed_ms = t_prune.elapsed().as_millis(),
                         "error log prune complete"
                     ),
                     Ok(_) => {}
-                    Err(e) => tracing::warn!(target: "magnotia_startup", error = %e, "error log prune failed"),
+                    Err(e) => tracing::warn!(target: "lumotia_startup", error = %e, "error log prune failed"),
                 }
 
                 // Load saved preferences for webview injection.
                 let t1 = Instant::now();
                 let prefs_json = get_setting(&db, "magnotia_preferences").await.unwrap_or(None);
-                tracing::info!(target: "magnotia_startup", elapsed_ms = t1.elapsed().as_millis(), "preferences load complete");
+                tracing::info!(target: "lumotia_startup", elapsed_ms = t1.elapsed().as_millis(), "preferences load complete");
                 let init_script = build_preferences_script(prefs_json);
 
                 Ok::<_, Box<dyn std::error::Error>>((db, init_script))
@@ -286,7 +286,7 @@ pub fn run() {
                             }
 
                             tracing::warn!(
-                                target: "magnotia_startup",
+                                target: "lumotia_startup",
                                 "Linux WebKitGTK microphone permission requests are auto-granted for audio-only capture; other permission classes remain denied"
                             );
 
@@ -321,7 +321,7 @@ pub fn run() {
                             // silently denies) instead of auto-granting,
                             // which is degraded but recoverable.
                             tracing::warn!(
-                                target: "magnotia_startup",
+                                target: "lumotia_startup",
                                 error = %e,
                                 "failed to configure webview media permissions"
                             );
@@ -366,7 +366,7 @@ pub fn run() {
 
             #[cfg(not(target_os = "android"))]
             if let Err(e) = tray::setup(app) {
-                tracing::warn!(target: "magnotia_startup", error = %e, "failed to setup tray");
+                tracing::warn!(target: "lumotia_startup", error = %e, "failed to setup tray");
             }
 
             Ok(())