Andrei 79966a6a6d Add voice intent classification for hands-free tracking ...

Implemented comprehensive voice command understanding system:

**Intent Classification:**
- Feeding intent (bottle, breastfeeding, solid food)
- Sleep intent (naps, nighttime sleep)
- Diaper intent (wet, dirty, both, dry)
- Unknown intent handling

**Entity Extraction:**
- Amounts with units (ml, oz, tbsp): "120 ml", "4 ounces"
- Durations in minutes: "15 minutes", "for 20 mins"
- Time expressions: "at 3:30 pm", "30 minutes ago", "just now"
- Breast feeding side: "left", "right", "both"
- Diaper types: "wet", "dirty", "both"
- Sleep types: "nap", "night"

**Structured Data Output:**
- FeedingData: type, amount, unit, duration, side, timestamps
- SleepData: type, duration, start/end times
- DiaperData: type, timestamp
- Ready for direct activity creation

**Pattern Matching:**
- 15+ feeding patterns (bottle, breast, solid)
- 8+ sleep patterns (nap, sleep, woke up)
- 8+ diaper patterns (wet, dirty, bowel movement)
- Robust keyword detection with variations

**Confidence Scoring:**
- High: >= 0.8 (strong match)
- Medium: 0.5-0.79 (probable match)
- Low: < 0.5 (uncertain)
- Minimum threshold: 0.3 for validation

**API Endpoint:**
- POST /api/voice/transcribe - Classify text or audio
- GET /api/voice/transcribe - Get supported commands
- JSON response with intent, confidence, entities, structured data
- Audio transcription placeholder (Whisper integration ready)

**Implementation Files:**
- lib/voice/intentClassifier.ts - Core classification (600+ lines)
- app/api/voice/transcribe/route.ts - API endpoint
- scripts/test-voice-intent.mjs - Test suite (25 tests)
- lib/voice/README.md - Complete documentation

**Test Coverage:** 25 tests, 100% pass rate
✅ Bottle feeding (3 tests)
✅ Breastfeeding (3 tests)
✅ Solid food (2 tests)
✅ Sleep tracking (6 tests)
✅ Diaper changes (7 tests)
✅ Edge cases (4 tests)

**Example Commands:**
- "Fed baby 120 ml" → bottle, 120ml
- "Nursed on left breast for 15 minutes" → breast_left, 15min
- "Changed wet and dirty diaper" → both
- "Napped for 45 minutes" → nap, 45min

System converts natural language to structured tracking data with
high accuracy for common parenting voice commands.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

2025-10-01 20:20:07 +00:00

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