[divyanshujethi]

Phase 2: Workstream 2.2 — Semantic Tool Discovery & Dynamic Caching

• Reciprocal Rank Fusion (RRF) Discovery Engine (FastText dense vectors + BM25 sparse lexical ranking, k=60)
• Hierarchical Two-Tier Cache (L1 in-memory LRU + L2 Redis VPC cache)
• Bidirectional Tool-Call Taint Tracking (prompt injection, role delimiter spoofing, markdown exfiltration detection & redaction)
• 101/101 test suite passing + Biome linting clean

[github-actions]

👋 Thanks for opening this Pull Request, @divyanshujethi!

Thank you for contributing to SkillPrism! 🚀

Here is what happens next:

1. 🧪 Automated CI Tests: Our workflow is verifying code compilation, Biome formatting, and token benchmarks.
2. 🔍 Code Review: A maintainer from @RitualDev-Lab will review your changes shortly.
3. 🌟 Contributor Recognition: Once merged, you'll be featured on our contributors list!

💡 Tip: Make sure your commits follow Conventional Commits and tests pass locally (pnpm test).