Developer API + /run/stream + live logs

Adds a public developer API and a real-time logs experience on top of v0.1.0.

✨ Public Developer API

• POST /api/v1/run — run an agent turn from any project with a developer
  key (Authorization: Bearer adp_live_…), scoped to your saved connections.
• POST /api/v1/run/stream — Server-Sent Events variant that streams each
  pipeline step as it happens, then a terminal done/error event with the full
  result. Render the agent's progress live in your own UI (curl, Node.js & Python
  examples in the README).
• Mint, label, and revoke keys from the new Developer Keys dashboard page.

📊 Live execution logs

• The Logs page tails every run (Web UI, MCP, /api/v1) live over SSE —
  in-flight runs show as a step-by-step row. Added "Load more" pagination.

📖 Docs

• Documented the streaming API and a remote-MCP-over-SSH guide for server
  deployments. Added a demo video and restructured the README.

🐛 Fixes

• /run/stream now emits a terminal step so the live row completes correctly.
• Fixed the README clone URL (wrong owner).