---
milestone: v1.6
audited: 2026-04-04
status: passed
scores:
  requirements: 23/23
  phases: 4/4
  integration: 18/18
  flows: 5/5
gaps:
  requirements: []
  integration: []
  flows: []
tech_debt:
  - phase: 36-voice-pipeline-foundation
    items:
      - "VPIPE-08 multi-language synthesis has no UI consumer yet (API endpoint exists, callable, but no frontend component calls /api/synthesize/multi-lang)"
      - "3 human verification items deferred: real Whisper transcription, real Piper synthesis, end-to-end dual-output voice interaction"
  - phase: 37-web-chat-voice-ui
    items:
      - "4 human verification items deferred: waveform animation, VAD auto-stop, voice full response auto-play, VoiceModeToggle persistence"
  - phase: 38-telegram-bridge
    items:
      - "4 human verification items deferred: text relay, voice round-trip, onboarding UX, skip flow"
      - "GET /api/telegram/status has no UI consumer (operational endpoint only)"
      - "relayToAgent voiceMode param is boolean, not string union (intentional simplification for Telegram)"
  - phase: 39-voice-polish
    items:
      - "Sentence-buffered streaming needs real-world latency testing"
nyquist:
  compliant_phases: []
  partial_phases: [36]
  missing_phases: [37, 38, 39]
  overall: partial
---

# Milestone v1.6 Audit — Voice Pipeline + Minimal Message Bridge

## Requirements Coverage

**23/23 requirements satisfied**

| Category | Requirements | Status |
|----------|-------------|--------|
| Voice Pipeline | VPIPE-01..06 | All satisfied (Phase 36) |
| Voice Polish | VPIPE-07, VPIPE-08 | All satisfied (Phase 39) |
| Web Chat Voice | WCHAT-01..06 | All satisfied (Phase 37) |
| Telegram Bridge | TGRAM-01..06 | All satisfied (Phase 38) |
| Onboarding | ONBRD-01..03 | All satisfied (Phases 38, 39) |

## Phase Completion

| Phase | Name | Plans | Status |
|-------|------|-------|--------|
| 36 | Voice Pipeline Foundation | 3/3 | Complete |
| 37 | Web Chat Voice UI | 4/4 | Complete |
| 38 | Telegram Bridge | 3/3 | Complete |
| 39 | Voice Polish | 2/2 | Complete |

## Cross-Phase Integration

**18/18 integration points verified:**
- Phase 37 UI → Phase 36 voice routes (transcribe, synthesize): WIRED
- Phase 38 Telegram → Phase 36 VoicePipelineService (direct import): WIRED
- Phase 39 sentence streaming → Phase 36 synthesize: WIRED
- Phase 39 hardware probe → Phase 37 VoiceStep: WIRED
- voiceMode flag propagation (client → Express → DB): WIRED end-to-end
- Telegram → chatService → puterProxyService → voice pipeline: WIRED
- All auth-protected routes verified

## E2E Flows

| Flow | Status |
|------|--------|
| Voice input → transcribe → agent → dual output | Complete |
| Voice mode toggle → persists → affects responses | Complete |
| Telegram text → agent → prefixed reply | Complete |
| Telegram voice note → transcribe → agent → text + voice reply | Complete |
| Onboarding → hardware probe → voice enable/skip | Complete |

## Tech Debt

- **VPIPE-08 multi-language UI:** API exists but no frontend consumer yet. Users can call `/api/synthesize/multi-lang` directly.
- **Human verification items:** 11 items deferred across phases (require live Whisper/Piper/Telegram/browser)
- **Telegram status endpoint:** No UI consumer for `GET /api/telegram/status`
- **Nyquist compliance:** Only Phase 36 has VALIDATION.md; Phases 37-39 lack validation strategies

## Result

**PASSED** — All 23 requirements satisfied. All 4 phases complete. Cross-phase integration verified. Tech debt is non-blocking.

---
*Audited: 2026-04-04*