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/superpowers/specs/2026-05-09-battery-gpu-aware-thread-tuning-design.md

@@ -35,7 +35,7 @@ The Apple "30% perf for 50% power" framing is empirical, not a published softwar
 
 - **New** `crates/core/src/power.rs` — `PowerState`, sysfs probe, TTL cache.
 - **New** `crates/core/src/tuning.rs` — `Workload`, `inference_thread_count(workload, gpu_offloaded)`.
-- **Move** `vulkan_loader_available()` from `src-tauri/src/commands/models.rs` to `magnotia_core::hardware`. `crates/transcription` needs to call it; src-tauri continues to call it from its new home. `libloading = "0.8"` becomes a workspace dependency of `magnotia-core`.
+- **Move** `vulkan_loader_available()` from `src-tauri/src/commands/models.rs` to `lumotia_core::hardware`. `crates/transcription` needs to call it; src-tauri continues to call it from its new home. `libloading = "0.8"` becomes a workspace dependency of `lumotia-core`.
 - **Update** `crates/transcription/src/whisper_rs_backend.rs` — compute `gpu_offloaded`, pass to helper.
 - **Update** `crates/llm/src/lib.rs` — compute `gpu_offloaded`, pass to helper. (Recompute *after* the model loads, since `model.n_layer()` requires the loaded model.)
 - **Deprecate facade** `crates/core/src/constants.rs::inference_thread_count()` — keep as `#[deprecated]` re-export pointing at `tuning::inference_thread_count` for one commit, then remove.
@@ -149,7 +149,7 @@ let gpu_offloaded = use_gpu
 
 ```rust
 let gpu_offloaded = cfg!(feature = "whisper-vulkan")
-    && magnotia_core::hardware::vulkan_loader_available();
+    && lumotia_core::hardware::vulkan_loader_available();
 ```
 
 Compile-time feature check (`whisper-vulkan` is in default features) plus runtime libvulkan resolution. If libvulkan1 isn't installed, whisper-rs falls back to CPU and we should not under-thread.
@@ -227,6 +227,6 @@ inference_thread_count: 3 workload=Whisper gpu_offloaded=false on_battery=true c
 
 - All four panels of `thread_sweep.rs` print without panic on a 6c12t Ryzen.
 - New unit tests pass on Linux (and on macOS CI where applicable; sysfs tests cfg-gated to Linux).
-- Existing `cargo test -p magnotia-core` and `-p magnotia-llm` continue to pass.
+- Existing `cargo test -p lumotia-core` and `-p lumotia-llm` continue to pass.
 - A real Lumenote session with on-battery laptop logs `on_battery=true clamps=[battery]` at first inference call.
 - Manual smoke: kick a Whisper Tiny transcription on battery, verify CPU usage settles around half what it was on AC.