Fixed issue where trigger words would disappear when typing or when adding new trigger words. The problem was that `swabbleTriggerWords` changes were triggering `VoiceWakeRuntime.refresh()` which sanitized the array by removing empty strings in real-time.
Solution: Introduced local `@State` buffer `triggerEntries` with stable UUID identifiers for each trigger word entry. User edits now only affect the local state buffer and are synced back to `AppState` on explicit actions (submit, remove, disappear). This prevents premature sanitization during editing.
The local state is loaded on view appear and when the view becomes active, ensuring it stays in sync with `AppState`.
- Keep the chosen mic label visible when it disconnects and show a disconnected hint while falling back to system default.
- Avoid clearing the preferred mic on device changes so it auto-restores when available.
- Add audio input change and default-input logs in voice wake runtime/tester/meter to debug routing.
Why: voice wake tests often delivered partial/final transcripts without reliable word timings, so trigger matching failed, timeouts overwrote detections, and test runs/mic capture kept running after UI changes.
What: add text-only/prefix fallback and silence-based detection in the test flow, stop/clean up any prior test, cancel timeout on detection/stop, and tear down meter/test when the Voice Wake tab is inactive. Runtime detection now falls back on final text-only matches when timing is missing. UI state now reflects finalizing and prevents hanging tests.
