Chris Coutinho 7b8c3f93a8 test: add integration tests for semantic search with in-process embeddings ...

Adds comprehensive integration tests for vector database semantic search that
work without external dependencies (Ollama), making them suitable for CI/CD.

Changes:
- Add SimpleEmbeddingProvider: in-process TF-IDF-like embeddings using feature hashing
- Make Ollama optional: embedding service now falls back to SimpleEmbeddingProvider
- Add 6 integration tests covering semantic search, filtering, and batch operations
- Downgrade urllib3 to 1.26.x for qdrant-client compatibility
- Update docker-compose.yml to comment out Ollama configuration (optional)

The SimpleEmbeddingProvider generates deterministic, normalized embeddings
suitable for testing semantic similarity without requiring external services.
Tests validate that similar texts have higher cosine similarity and that
semantic search correctly ranks results by relevance.

Test coverage:
- Deterministic embedding generation
- Semantic similarity between texts
- Full search flow with Qdrant (in-memory)
- Category filtering
- Empty result handling
- Batch embedding generation

All tests pass and can run in GitHub CI without Ollama infrastructure.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-11-08 22:13:33 +01:00

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