lazy-tool trims MCP prompt bloat

This is a pragmatic infrastructure fix for a real failure mode in agent systems: once tool catalogs get large, “just stuff everything into the prompt” stops scaling, and smaller models suffer first.

• –Search-before-invoke is the right default for weak or local models because it reduces context load without giving up tool access
• –The single Go binary plus SQLite approach keeps the runtime simple and deployable on a laptop, not just in a larger agent stack
• –Auto-import from Claude Desktop, Cursor, and VS Code lowers setup friction, which matters more than another abstract registry idea
• –The direct/search/hybrid modes are useful because they acknowledge that one tool-loading strategy will not fit every model class
• –The benchmark angle is the strongest part of the pitch, but the product will need broader real-world comparisons to prove it beats simpler per-agent filtering schemes