Host MCP cognition server as remote service

[just-cameron]

Context

The MCP server (tools/mcp_server.py) works locally via stdio and streamable HTTP, but for adoption it needs to be hosted so agents can connect remotely without cloning the repo.

Requirements

• Deploy as a persistent streamable HTTP service
• Reachable at a stable URL (e.g. mcp.comind.network or on Railway)
• Read tools work without auth (search, read, list agents)
• Write tools require ATProto credentials passed via MCP config or env vars
• Health check endpoint

Options

1. Railway (where the indexer already runs) - add as another service
2. Standalone VPS - more control, persistent
3. Cloudflare Workers - edge, but Python compatibility unclear

Acceptance criteria

• MCP server accessible via {"type": "streamable-http", "url": "https://..."}
• search_cognition works from a remote Claude Desktop / Cursor client
• Documented in docs/api/quick-start.md