Phase 1-5: Upgrade SDK from v0.0.68664 to v1.0.0-alpha.15
Breaking changes applied:
- Client init: LettaClient → Letta, token → apiKey, added baseURL
- Method renames: createStream() → stream()
- Parameter names: camelCase → snake_case (stream_tokens, include_pings, etc)
- Tool calls: tool_call → tool_calls (array)
- Message types: Handle both messageType and message_type
- Pagination: All list methods now access .items property
- Removed deprecated use_assistant_message parameter
🐾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>