conversations come back as conversations

A probe on the torch stage worker (~/dockers/torch-worker) runs beside every
transcription and decides what the recording is: solo dictation returns as
paragraphs exactly as before, several voices return speaker-labeled with
conversation: true. Nobody declares which — the caller cannot know.

Transcription and the worker each get a serial FIFO queue on their own
resource, so the probe costs a solo memo nothing and multi-user traffic
stays fair. The worker is optional and best-effort throughout: unreachable
or failing, everything still transcribes, just never labeled.

Speaker attribution is segment-granularity by maximal turn overlap —
whisper.cpp's own timestamps, no alignment stage. If boundaries prove
sloppy, wav2vec2 alignment returns as a worker endpoint.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

manifest.ts

@@ -6,9 +6,11 @@ import type { PluginManifest } from '@@/plugins/manifest';
  * ── What this plugin is, and what it is not ──
  *
  * It does NOT run Whisper, and it does not ship a model. You point it at a whisper.cpp `/inference`
- * server you already run (the same container the platform used to talk to directly) and it forwards to
- * it. Nothing is transcribed here — the sidecar's whole job is the request shape: detect the language,
- * then transcribe faithfully in it, tuned for one person talking into a phone.
+ * server you already run (the same container the platform used to talk to directly) and, optionally, at
+ * a diarization worker beside it. Nothing is transcribed here — the sidecar's job is the request shape
+ * (detect the language, then transcribe faithfully in it, tuned for one person talking into a phone)
+ * and the pipeline around it: probe whether the recording is a conversation, label the speakers when it
+ * is, and queue multi-user traffic fairly across the two servers.
  *
  * Named for the feature, not the implementation — the same reasoning as `photos` not `immich`. Swapping
  * the backend for a different `/inference`-compatible server would not move the mount point or the route
@@ -58,6 +60,16 @@ export const manifest: PluginManifest = {
       required: true,
       placeholder: 'http://127.0.0.1:8178',
     },
+    {
+      key: 'workerUrl',
+      label: 'Diarization worker',
+      hint:
+        'The torch stage worker that detects conversations and labels speakers. Optional — ' +
+        'without it, recordings still transcribe but nothing is speaker-labeled.',
+      type: 'url',
+      required: false,
+      placeholder: 'http://127.0.0.1:8183',
+    },
   ],
 
   permissions: [