v1.0.0: Cited document Q&A with a built-in eval

First tagged release.

• Hybrid retrieval (pgvector + Postgres full-text, fused with RRF) with (Chunk N) citations
• Built-in eval: LLM judge plus deterministic checks. Self-graded, 7.1 to 9.3 across six runs on one document
• 35 unit tests, CI, input validation, RLS, rate limiting
• Includes a sample document so you can try the app without a file
• Known limits are listed in the README