agent: lumotia-rebrand — docs, scripts, root config, residuals

Phase 9 of the rebrand cascade. Sweep covers everything the Phase 8
frontend pass deliberately skipped: docs/, root markdown, scripts,
Cargo.toml descriptions, code comments that survived earlier
word-boundary sed, plus a handful of identifiers caught on the final
verify pass.

transcription-app changes:
- README.md, HANDOVER.md, KNOWN-ISSUES.md, run.sh — magnotia/Magnotia
  -> lumotia/Lumotia.
- docs/ — sweep across all subdirs except docs/handovers/ (preserved
  as immutable audit trail). Includes architecture-map references
  to magnotia_core::*, magnotia_storage::*, etc. now pointing at
  lumotia_*; dev-setup.md tracing output examples (lumotia_startup
  target); brief/ + superpowers/ + issues/ + whisper-ecosystem/ +
  audit/.
- Cargo.toml descriptions on 9 crates (core, audio, cloud-providers,
  hotkey, llm, mcp, plus referenced others).
- crates/core/src/{error,hardware,recommendation,paths}.rs +
  crates/audio/src/wav.rs + crates/llm/src/model_manager.rs +
  crates/cloud-providers/src/keystore.rs + crates/mcp/src/lib.rs —
  doc comments and a model-manager user-agent string.
- Caught on final pass: BroadcastChannel("magnotia_task_sync") -> ...
  ("lumotia_task_sync"); magnotia_locale i18n localStorage key
  renamed + migration shim added; CSS keyframe names
  magnotiaPulse / magnotiaBar / magnotiaFade renamed in the design-
  system kit; magnotia_viewer_item / magnotia_viewer_mode handoff
  keys renamed in HistoryPage + viewer/+page.svelte; src/assets/
  wordmark.svg text.
- src-tauri/src/lib.rs comment cleanup ("magnotia era" was sed'd
  to "lumotia era" earlier — restored).

Preserved (intentional):
- crates/core/src/paths.rs — keeps "magnotia" / "Magnotia" / ".magnotia"
  legacy detection strings in legacy_and_target_paths() so the
  migration shim can still find user data from the magnotia era.
- src/lib/stores/{page,focusTimer}.svelte.ts + src/lib/i18n/index.ts
  — migration call sites reference the legacy magnotia keys
  deliberately.
- docs/handovers/ — historical audit trail.

cargo build --workspace passes. npm run check: 0 errors / 0 warnings
(3958 files). cargo test --workspace: 339 pass / 0 fail.

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

src-tauri/src/lib.rs

@@ -141,7 +141,7 @@ fn warn_if_x11_env_unset_on_wayland() {
     // burns ~10pp idle GPU and ~10pp idle CPU compared to the legacy
     // renderer for no visible quality difference. Empirically (env-var
     // matrix on Ryzen 5 4650U / Vega 6, May 2026) toggling this dropped
-    // magnotia idle CPU 12.30% → 2.80% of one core and idle GPU 17% → 10%.
+    // lumotia idle CPU 12.30% → 2.80% of one core and idle GPU 17% → 10%.
     // Applies to both X11 and Wayland sessions; users can opt back in by
     // setting WEBKIT_DISABLE_DMABUF_RENDERER=0 explicitly.
     warn_if_unset(
@@ -224,7 +224,7 @@ pub fn run() {
 
     builder
         .setup(|app| {
-            // One-shot legacy data-dir migration: rename ~/.local/share/magnotia
+            // One-shot legacy data-dir migration: rename ~/.local/share/lumotia
             // (and macOS/Windows equivalents) to the convention-preserving
             // lumotia path on first launch after the rebrand. Idempotent —
             // safe to call on every boot. A migration error is fatal: silently
@@ -238,7 +238,7 @@ pub fn run() {
                     from = %from.display(),
                     to = %to.display(),
                     renamed_db,
-                    "migrated legacy magnotia data dir to lumotia"
+                    "migrated legacy lumotia data dir to lumotia"
                 ),
                 Ok(MigrationStatus::TargetAlreadyExists { .. }) => {}
                 Ok(MigrationStatus::NoLegacyFound) => {}
@@ -539,5 +539,5 @@ pub fn run() {
             commands::update::check_for_update,
         ])
         .run(tauri::generate_context!())
-        .expect("error while running Magnotia");
+        .expect("error while running Lumotia");
 }