Created the requested GitHub issue in `OpenHands/agent-canvas`: https://github.com/OpenHands/agent-canvas/issues/398 Checklist: • ✅ Captured the request to copy/adapt the OpenHands CLI login flow into agent-canvas. • ✅ Highlighted the Setup LLM/onboarding page as the main UI surface. • ✅ Included the requirement to show when the user is already authenticated with the OpenHands CLI. • ✅ Included acceptance criteria for login, existing-auth detection, manual key fallback, and secret-safety. • ✅ Added the required AI disclosure note in the issue body. No repository code changes were made, so there was nothing to commit or revert.