- PitchPilot: a RAG copilot for field sales pitches. Its TypeScript backend runs tenant-scoped pgvector search over Gemini embeddings, grounds each answer in the retrieved context and logs its sources; re-indexing embeds only changed chunks.
- rag-demo (open source) shows the pipeline in plain Python: overlapping chunks → local embeddings → pgvector retrieval → Gemini answers that cite source files or decline. Postgres in Docker Compose; offline pytest tests in CI.