Integrate Backboard.io for assistants, threads, memories, and document RAG via a local backend on http://localhost:5100.
- Added a complete backend implementation for Backboard integration, including API routes, models, and services. - Introduced backend startup script and configuration files for easy deployment. - Implemented support for assistants, threads, memories, and document RAG operations via local Flask backend. - No changes to the user-facing skill documentation or instructions.