Fix README yaml header

Update README for v4.1 with decay feature and benchmarks

v4.1: Add gentle memory decay (1%/day) and pruning (30 days stale)

Fix: Lower default similarity_threshold to 0.10 for hash embeddings

v4: SLM-inspired architecture with three-tier memory, neural links, self-tuning

v3 TUNED: All bottleneck fixes + optimized threshold (0.45)

Update mcp_server.py with smart injection and real embeddings

Update app.py with smart injection and real embeddings

Update requirements.txt with smart injection and real embeddings

Update README.md with smart injection and real embeddings

Update mnemo.py with smart injection and real embeddings

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initial commit