Merge feat/vocabulary-hint: names-and-terms decoder prompt (spec 001 workstream 2)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

# Conflicts:
#	docs/Architecture.md
#	docs/Decisions.md
#	docs/WorkBreakdown.md
#	server-py/sidecar.py
#	src/App.tsx
#	src/server/live.ts
#	src/server/transcribe.ts
#	tests/fixtures/fake_sidecar.py
#	tests/transcribe.test.ts

src/index.ts

@@ -153,6 +153,7 @@ async function handleApiRequest(request: Request, server: any): Promise<Response
           model: fasterWhisperModel,
           language: options.language,
           task: options.task,
+          prompt: options.prompt,
           tempDir: tmpdir(),
         },
       });