Clean up browser-extension references from monorepo

- Update README.md to reference sitegeist repo
- Update CLAUDE.md to replace browser-extension with web-ui
- Update packages/web-ui/README.md examples to point to sitegeist
- Remove browser-extension exclude from tsconfig.json
- Remove browser-extension from .claude/settings.local.json permissions

README.md

@@ -6,12 +6,14 @@ A collection of tools for managing LLM deployments and building AI agents.
 
 - **[@mariozechner/pi-ai](packages/ai)** - Unified multi-provider LLM API
 - **[@mariozechner/pi-web-ui](packages/web-ui)** - Web components for building AI chat interfaces
-- **[@mariozechner/pi-browser-extension](packages/browser-extension)** - Browser extension for AI assistance
 - **[@mariozechner/pi-proxy](packages/proxy)** - CORS proxy for browser-based LLM API calls
 - **[@mariozechner/pi-tui](packages/tui)** - Terminal UI library with differential rendering
 - **[@mariozechner/pi-agent](packages/agent)** - General-purpose agent with tool calling and session persistence
 - **[@mariozechner/pi](packages/pods)** - CLI for managing vLLM deployments on GPU pods
 
+**Related:**
+- **[sitegeist](https://github.com/badlogic/sitegeist)** - Browser extension for AI-powered web navigation (uses pi-ai and pi-web-ui)
+
 ## Development
 
 This is a monorepo using npm workspaces for package management and a dual TypeScript configuration for development and building.