AI Notes API v0.4.0

Added

• LLM tool registry and built-in toolkit
• Note tools: create, get by id, search, update, delete
• Toolkit integration into LLM service
• OpenAI integration client
• Separate embeddings client
• Chat memory model and table
• Chat memory repository, service and schemas
• Chat session memory endpoint
• Conversation summarizer
• Facts extractor service
• Memory prompt builder and prompts
• Async memory update job (Celery)
• Message get_messages_after repository helper

Changed

• Split LLM client into completion and embeddings clients
• Isolated LLM service from message model
• Tools use note service instead of DB session
• Chat session to memory as one-to-one relation
• Updated README and environment variables

Security

• User-scoped chat memory access

Tests

• Tool registry, factory and models tests
• Built-in note tools tests
• Chat memory repository, service and endpoint tests
• Summarizer, extractor and prompt builder tests
• LLM embeddings client tests
• Message repository tests