Trajectory Mobile - Voice Capture + Idea Vault

Trajectory Mobile - Voice Capture + Idea Vault

A React Native / Expo app for capturing ideas via voice and text, with full-text search, offline sync, priority management, and iOS widgets.

Features

### 🎤 Voice Capture (CC-Speak Pattern)
- Low-latency recording - Audio system pre-warmed on mount for 10ms response
- Visual feedback - Pulse animation and duration display while recording
- Automatic file management - Recordings saved with proper cleanup

### 💡 Idea Vault
- Dual input modes - Text or voice capture
- Auto-tagging - Smart tag suggestions based on content
- Custom tags - Add your own tags to organize ideas
- Priority levels - Urgent/High/Medium/Low with color-coded indicators
- Categories - Inbox, Project, Personal, Work, Creative, Research
- Swipe actions - Swipe left to delete, right to edit
- Persistent storage - Offline-first with sync queue

### 🔍 Full-Text Search + Fuzzy Matching
- Ranked results - Exact phrase matches score highest
- Fuzzy matching - Levenshtein distance for typo-tolerant search
- Highlighted results - Matched text highlighted in search results
- Tag + Category filtering - Filter by tags, categories, and sync state
- Priority boost - Urgent/high ideas rank higher

### 📊 Statistics Dashboard
- Animated counters - Total ideas, this week, urgent count
- Priority breakdown - Visual bar chart by priority level
- Category distribution - At-a-glance category counts
- Top tags - Most used tags across all ideas
- Collapsible - Compact by default, tap to expand

### 📤 Export & Sync
- Markdown export - Share/export all ideas as formatted markdown
- Offline-first sync - Queue-based with conflict resolution
- Background sync - Auto-syncs when coming online
- Conflict UI - Visual conflict resolution sheet

### 📱 iOS Widget
- Small/Medium/Large home screen widgets
- Lock screen widgets (circular + rectangular)
- Quick Capture button on widget
- Quick Voice button for voice capture
- Priority indicators - Colored dots per idea
- Category icons - Visual category display

Getting Started

# Install dependencies
npm install

# Start Expo
npx expo start

# Run on iOS simulator
npm run ios

# Run on Android emulator
npm run android

# Run in browser
npm run web

Project Structure

trajectory-mobile/
├── App.tsx                 # Entry point
├── src/
│   ├── components/
│   │   ├── IdeaCard.tsx       # Individual idea display
│   │   ├── NewIdeaSheet.tsx   # Modal for creating ideas
│   │   ├── SearchBar.tsx      # Search input + tag filters
│   │   └── VoiceRecorder.tsx  # Recording UI with animations
│   ├── hooks/
│   │   ├── useIdeaVault.ts    # Idea CRUD + search + sync
│   │   └── useVoiceCapture.ts # Audio recording (CC-Speak)
│   ├── screens/
│   │   └── HomeScreen.tsx     # Main app screen
│   ├── types/
│   │   └── index.ts           # TypeScript interfaces
│   └── utils/
│       ├── search.ts          # Search algorithm + tag utils
│       └── storage.ts         # AsyncStorage + markdown export

Voice Capture Architecture

The voice capture system uses the CC-Speak pattern for minimal latency:

1. Pre-warm - Audio mode configured on component mount
2. Instant start - No setup delay when recording begins
3. Real-time metering - 100ms update interval for visualizations
4. Clean teardown - Proper resource cleanup on cancel/stop

// Pre-warm settings for low latency
await Audio.setAudioModeAsync({
  allowsRecordingIOS: true,
  playsInSilentModeIOS: true,
  interruptionModeIOS: 1, // DoNotMix
  interruptionModeAndroid: 1, // DoNotMix
});

Search Algorithm

The search uses a weighted scoring system:

Backend Sync (Optional)

Set `EXPO_PUBLIC_TRAJECTORY_SYNC_URL` to enable backend sync:

EXPO_PUBLIC_TRAJECTORY_SYNC_URL=https://your-trajectory-api.com

Expected API endpoint:

POST /api/ideas/sync
Body: { ideas: Idea[] }
Response: { ideas: Idea[] }

Tech Stack

• React Native / Expo (SDK 53)
• TypeScript for type safety
• expo-av for audio recording
• expo-file-system for file management
• @react-native-async-storage for persistence

License

MIT