Usability and test infrastructure updates.

docs/Architecture.md

@@ -84,24 +84,26 @@ src/
     auth.ts                # Passport.js wiring + session middleware adapter
     db.ts                  # bun:sqlite schema + queries
     transcribe.ts          # server-side ASR endpoint (bridges the sidecar, M5)
+    live.ts                # server-engine live mic over WebSocket (D-019, M7)
 server-py/                 # faster-whisper sidecar (Python, D-013; M5)
 tests/                     # bun test
 ```
 
-(Current state: M0–M3 built — browser transcription with the curated model
+(Current state: M0–M6 built — browser transcription with the curated model
 catalog, WebNN→WebGPU→WASM auto-selection (D-017), model switching,
-language/task options,
-and the installable offline PWA (`pwa/`, `scripts/build.ts` production build,
-`dist/` serving in `src/index.ts`; browser-level offline behavior pending the
-manual run in `tests/offline.md`). M4 accounts are built (`server/db.ts`,
-`server/auth.ts`, `/api/auth/*`, `AuthForms`). M7 live microphone
-transcription is built (`lib/live.ts`, `lib/mic.ts`, `LiveControls`, D-016;
-in-browser run pending per `tests/live.md`). M5's server side is built —
-`server-py/sidecar.py`, `server/transcribe.ts` (supervisor +
-`/api/transcribe` + `/status`), `lib/engine.ts` (both engines, D-010), and
-the catalog mapping in `lib/models.ts` — with graceful degradation when
-Python/faster-whisper is absent; the `EngineToggle` component and App wiring
-are the remaining M5 work; see `WorkBreakdown.md`.)
+language/task options, the installable offline PWA (`pwa/`,
+`scripts/build.ts` production build, `dist/` serving in `src/index.ts`;
+browser-level offline behavior pending the manual run in `tests/offline.md`),
+M4 accounts (`server/db.ts`, `server/auth.ts`, `/api/auth/*`, `AuthForms`),
+and the M5 server engine end to end — `server-py/sidecar.py`,
+`server/transcribe.ts` (supervisor + `/api/transcribe` + `/status`),
+`lib/engine.ts` (both engines, D-010), `EngineToggle`, and the catalog
+mapping in `lib/models.ts` — with graceful degradation when
+Python/faster-whisper is absent. M7 live microphone transcription is built
+for both engines: browser (`lib/live.ts`, `lib/mic.ts`, `LiveControls`,
+D-016) and server (`server/live.ts`, D-019); in-browser manual verification
+of both is still pending per `tests/live.md` (no real browser in the dev
+environment). See `WorkBreakdown.md` for the itemized checklist.)
 
 ## 4. Key flows
 
@@ -160,8 +162,18 @@ are the remaining M5 work; see `WorkBreakdown.md`.)
 4. Stopping flushes the segmenter, drains pending final passes (merged, with
    a "N remaining segments" countdown in the UI), and yields a normal
    transcript (text + absolute-timestamped chunks) in `TranscriptView`.
-   Everything runs on-device; works offline like the file flow. Server-engine
-   live input is a recorded future want (WorkBreakdown M7, D-016).
+   Everything runs on-device; works offline like the file flow.
+5. **Server-engine live (logged in, D-019).** Same `LiveControls` UI, but
+   `App.tsx` opens a `GET /api/transcribe/live` WebSocket instead of running
+   the segmenter locally: the browser only captures/resamples mic audio
+   (`lib/mic.ts`) and streams raw PCM frames over the socket; the *same* pure
+   `LiveTranscriber`/segmenter (`lib/live.ts`) runs server-side
+   (`server/live.ts`), writing each segment to a temp file and bridging it to
+   the faster-whisper sidecar (D-013) the same way `POST /api/transcribe`
+   does. `{type:"update"}` frames carry committed/tentative text back;
+   `{type:"stop"}` drains and closes with a `{type:"result"}` frame. Selected
+   only when signed in with the server engine available (`EngineToggle`);
+   anonymous/offline users always get the browser-engine path above.
 
 ### 4.2 Offline (PWA)
 - Service worker (`pwa/sw.ts`, hand-rolled — D-007) precaches the built app shell