Build a GitHub Copilot App canvas extension the right way, fast. Use when the user wants to create, scaffold, or improve an interactive canvas (a side-panel UI the agent can open and drive) — dashboards, editors, trackers, boards, document/preview surfaces. Provides a no-build Preact + htm kit with
Build a GitHub Copilot App canvas extension the right way, fast. Use when the user wants to create, scaffold, or improve an interactive canvas (a side-panel UI the agent can open and drive) — dashboards, editors, trackers, boards, document/preview surfaces. Provides a no-build Preact + htm kit with live SSE state, durable per-user storage, Primer theming, and the official GitHub Lucide icon set, p