- Implemented LexicalIndex class in src/services/memory/retriever.js.
- Added WeakMap caching for indices based on memory array references.
- Improved memory array stability in src/services/memory/index.js using a storeVersion counter.
- Achieved ~2x speedup for 10k memories and ~9x speedup for 100k memories in benchmarks.
- Maintains compatibility with existing textMatchSimilarity scoring.
Co-authored-by: PR0M3TH3AN <[email protected]>