ai_rag_api 1.0.0-alpha1

First alpha release of AI RAG API: an OpenAI-compatible chat completions API with Retrieval Augmented Generation for headless Drupal.

• OpenAI-compatible endpoints: /api/ai-rag/v1/chat/completions and /api/ai-rag/v1/models, usable with the official OpenAI SDKs.
• RAG profiles as configuration entities — the OpenAI model parameter selects the profile.
• Streaming via server-sent events, with sources delivered on the first chunk.
• Sources (title, URL, entity ID, score) on every response; full retrieved contexts on request for evaluation tools such as RAGAS.
• Bearer API key authentication via the Key module, optional permission-based session access, and entity access filtering on retrieved content.
• AI guardrail set support with finish_reason: "content_filter".
• Covered by unit, kernel and functional tests.

Alpha status: the API surface (request/response shapes, the rag object) may still change before 1.0.0. Feedback in the issue queue is very welcome.