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>

docs/architecture-map/01-frontend/i18n.md

@@ -38,7 +38,7 @@ export const SUPPORTED_LOCALES: { code: Locale; label: string }[] = [
   { code: "de", label: "Deutsch" },
 ];
 
-const STORAGE_KEY = "magnotia_locale";
+const STORAGE_KEY = "lumotia_locale";
 
 register("en", () => import("./locales/en.json"));
 register("es", () => import("./locales/es.json"));
@@ -49,7 +49,7 @@ function detectInitialLocale(): Locale { /* localStorage → navigator.language
 
 Public exports:
 - `initI18n()`. Idempotent. Called from every layout's `onMount`-ish path (`+layout.svelte:38` and the float/viewer/preview break layouts).
-- `setLocale(code)`. Writes to `magnotia_locale` and updates the svelte-i18n store.
+- `setLocale(code)`. Writes to `lumotia_locale` and updates the svelte-i18n store.
 - `currentLocale`. A derived store that components subscribe to via `$currentLocale`.
 - `SUPPORTED_LOCALES` constant for the picker.
 
@@ -65,7 +65,7 @@ Public exports:
 ## Watch outs
 
 - Adding a new locale is one `register("xx", () => import("./locales/xx.json"))` call plus a `SUPPORTED_LOCALES` entry.
-- Cross window: each window initialises i18n independently via its layout. Locale change persists to `localStorage["magnotia_locale"]`. Float and viewer pick up the new locale on the next mount, not live. Worth wiring a Tauri event if live cross-window translation is needed.
+- Cross window: each window initialises i18n independently via its layout. Locale change persists to `localStorage["lumotia_locale"]`. Float and viewer pick up the new locale on the next mount, not live. Worth wiring a Tauri event if live cross-window translation is needed.
 - The "British English" toggle in `settings.britishEnglish` is a transcription post-processing flag (slice 04 territory), not a UI locale. Not wired through svelte-i18n.
 - Default locale is detected from `navigator.language`. In Tauri, this is the OS locale.