- Add `SEARCH_PROVIDER` config with Tavily/Brave API key validation in server and prod script
- Introduce unified `web_search` tool and shared search service with Tavily + Brave backends
- Update chat UI tool status/result labels to treat both search tools consistently
Add dev.sh for running server + client in parallel on macOS, and prod.sh
for building and deploying in production. The Rust server now serves
static client files with SPA fallback, eliminating the need for Vite in
production. Also adds missing BRAVE_API_KEY to .env.example.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
