add a macos spotlight style command switcher

quick command switcher

Persist WASM plugins: source code, binaries, auto-reload on restart

Fix WASM plugin tool listing

Update SOUL.md with new tools and WASM self-extension guide

Wire WASM runtime into API: full end-to-end plugin lifecycle

WASM plugin runtime: agents can build and load their own plugins

Phase 7: Advanced features

Phase 6: Provider and tool plugins

Phase 5: Channel plugins

Phase 4: Core feature enhancements

Phase 3: Frontend plugin system

Phase 2: Context engine and conversation enhancements

Phase 1: Plugin system foundation

buncha features