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clio-android/.claude/CLAUDE.md

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+# Phone Recorder Server
+
+Encrypted audio recording server with transcript viewing capabilities.
+
+## Quick Start
+
+```bash
+cd server
+nix develop  # or activate venv
+uv run python main.py
+```
+
+Server runs on port 8000 by default.
+
+## Project Structure
+
+```
+.
+├── app/                    # Android app (Kotlin, Android Studio)
+├── server/                 # FastAPI server (Python)
+│   ├── main.py            # API endpoints
+│   ├── crypto.py          # PyNaCl decryption, keypair management
+│   ├── database.py        # SQLite for recordings metadata
+│   ├── importer.py        # Import transcriptions from batch processing
+│   ├── cli.py             # CLI tools
+│   ├── config.py          # Paths, ports
+│   ├── keys/              # Server keypair (auto-generated)
+│   └── recordings/        # Decrypted audio files
+└── test_recordings/       # Test data
+```
+
+## Key Commands
+
+```bash
+# Run server
+cd server && uv run python main.py
+
+# Run tests
+cd server && python test_crypto.py
+cd server && python test_integration.py
+
+# CLI tools
+cd server && uv run python cli.py --help
+```
+
+## API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/health` | GET | Health check |
+| `/api/v1/public-key` | GET | Get server public key (Base64) |
+| `/api/v1/recordings/upload` | POST | Upload encrypted file from phone |
+| `/api/v1/recordings` | GET | List recordings with transcripts |
+| `/api/v1/recordings/{id}` | GET | Get recording details |
+| `/api/v1/recordings/{id}/audio` | GET | Stream audio file |
+| `/api/v1/import/transcription` | POST | Import transcription JSON |
+| `/api/v1/highlights` | GET/POST | Manage highlights |
+
+## Security Model
+
+- Phone encrypts with server's public key (sealed box / X25519 + XSalsa20-Poly1305)
+- Server decrypts with private key on upload
+- Phone never stores unencrypted audio
+- Files use SREC format (chunked encryption for large files)
+
+## Frontend
+
+The frontend is a separate static React app in `/work/projects/view_recordings/designer_export/`:
+
+```bash
+cd /work/projects/view_recordings/designer_export
+python -m http.server 3000
+# Open http://localhost:3000/RecordingsViewer.html
+```
+
+## Dependencies
+
+- Python 3.x with uv
+- PyNaCl (libsodium bindings)
+- FastAPI + uvicorn
+- SQLite (via database.py)
+
+## Important Files
+
+- `description.md` - Detailed architecture documentation
+- `todo.md` - Future features and known limitations
+- `server/keys/` - Contains server keypair (do not commit private key)