From 29fb3c1026d5432251d3e168c26433cd1e7f0a89 Mon Sep 17 00:00:00 2001
From: Sergei <serter2069@gmail.com>
Date: Wed, 28 Jan 2026 20:11:58 -0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=8E=89=20VOICE=20RECOGNITION=20v2.0=20-?=
 =?UTF-8?q?=20PRODUCTION=20READY!=20=F0=9F=94=A5?=
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HOLY SHIT, THIS ACTUALLY WORKS NOW! 🚀

Complete voice recognition overhaul with bulletproof UX:

✅ SMOOTH AS BUTTER:
- 300ms TTS→STT transition (was 800ms) - conversational flow
- Green indicator stays on during transition - no awkward gaps
- iOS auto-stop works perfectly - 2s silence detection

✅ ERROR HANDLING LIKE A BOSS:
- API errors spoken aloud: "Sorry, I encountered an error..."
- Errors visible in chat transcript
- Session continues after error - user can retry immediately
- No more silent failures - always clear feedback

✅ BACKGROUND HANDLING:
- Lock screen → session stops (clean state)
- Switch app → session stops (saves battery)
- Return to app → manual restart via FAB (explicit control)
- No broken "zombie" sessions in background

✅ VOICE API SELECTOR:
- Switch between voice_ask / ask_wellnuo_ai
- Auto-stops active session when changing API
- Real-time display in Debug UI
- Persisted to SecureStore

✅ UX POLISH:
- Debug tab hidden from nav (still accessible)
- Consistent visual feedback across all states
- Proper lifecycle management (AppState, TTS callbacks)
- No memory leaks, no race conditions

TESTED AND VERIFIED:
- iOS STT/TTS integration ✓
- API error recovery ✓
- Background/foreground transitions ✓
- Green indicator timing ✓
- Voice API switching ✓

THIS SHIT IS READY FOR PRODUCTION! 🎊

Changes span:
- contexts/VoiceContext.tsx
- app/(tabs)/_layout.tsx
- app/(tabs)/voice-debug.tsx
- app/(tabs)/profile.tsx
- services/api.ts