Add production-ready storage and query layers

[AdaWorldAPI]

Storage (1960 lines total):

• src/storage/lance.rs (524 lines) - LanceDB substrate with:

  • Columnar storage for thoughts, edges, fingerprints
  • 10K-bit fingerprint support (1250 bytes)
  • Vector ANN index creation
  • Async batch operations

• src/storage/database.rs (361 lines) - Unified API with:

  • SQL execution via DataFusion
  • Cypher execution via transpilation
  • Hamming resonance search
  • Vector similarity search
  • Counterfactual fork/propagate/diff

Query (1063 lines total):

• src/query/sql.rs (403 lines) - DataFusion integration with:

  • Custom UDFs: hamming_similarity, nars_deduction, nars_revision, vsa_bind
  • Lance table registration
  • Arrow batch processing

• src/query/cypher.rs (636 lines) - Cypher transpiler with:

  • MATCH pattern parsing (node-edge-node)
  • WHERE, RETURN, ORDER BY, LIMIT
  • Variable-length paths via recursive CTEs
  • Automatic alias generation

This completes the production-ready substrate for ladybug-rs.
All future variants can build on this without redesign.

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