Gemini consultation provided full production-ready code:
- MCP SDK with SSE transport
- OAuth shim (auto-approve for single user)
- CORS for claude.ai
- Complete index.js replacement (Blocks A-F)
Task #111 upgraded from Desktop to Native Web:
- No Claude Desktop needed
- Works directly in claude.ai browser
- ~2 hour implementation
Key insight: Custom remote MCPs ARE supported in claude.ai web
via HTTP Streamable + OAuth flow.
Chronicler #76
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