Add Repo Actions Hub canvas extension (#2237)

* Add repo actions hub extension

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* Fix repo actions hub review feedback

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

extensions/repo-actions-hub/.github/plugin/plugin.json

@@ -0,0 +1,19 @@
+{
+  "name": "repo-actions-hub",
+  "description": "Browse repository GitHub Actions workflows, inspect recent runs, and trigger manual workflow_dispatch runs from a Copilot canvas.",
+  "version": "1.0.0",
+  "author": {
+    "name": "James Montemagno",
+    "url": "https://github.com/jamesmontemagno"
+  },
+  "keywords": [
+    "actions",
+    "canvas",
+    "copilot-extension",
+    "github-actions",
+    "recent-runs",
+    "workflow-dispatch"
+  ],
+  "logo": "assets/preview.png",
+  "extensions": "."
+}

extensions/repo-actions-hub/README.md

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+# Repo Actions Hub
+
+A GitHub Copilot canvas for browsing repository GitHub Actions workflows, reviewing recent runs, opening rich workflow/run details in a modal, and triggering manual `workflow_dispatch` runs.
+
+## Files
+
+- `extension.mjs` - canvas server, GitHub Actions data loading, modal details UI, and workflow run actions.
+- `assets/preview.png` - gallery preview image for the extension catalog.
+- `copilot-extension.json` - Copilot extension name/version metadata.
+- `package.json` - extension metadata for cataloging and packaging.
+- `.github/plugin/plugin.json` - plugin metadata used by the extension marketplace and website.
+
+## Install
+
+Ask Copilot to install the committed extension URL:
+
+```text
+Install this extension: https://github.com/github/awesome-copilot/tree/main/extensions/repo-actions-hub
+```
+
+You can also copy the folder into one of these locations:
+
+- `~/.copilot/extensions/repo-actions-hub/` - user scope
+- `.github/extensions/repo-actions-hub/` - project scope
+
+Reload extensions in the app, then open the `repo-actions-hub` canvas.
+
+## Agent actions
+
+- `get_state` - return the current workflow and recent-run state for the active repository.
+- `refresh` - reload workflows and recent runs from GitHub Actions.
+- `get_workflow_details { workflowId }` - inspect a workflow, its dispatch support, inputs, YAML, and recent runs.
+- `run_workflow { workflowId, ref?, inputs? }` - trigger a `workflow_dispatch` run for a workflow.

extensions/repo-actions-hub/copilot-extension.json

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+{
+  "name": "repo-actions-hub",
+  "version": 1
+}

extensions/repo-actions-hub/package.json

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+{
+  "name": "repo-actions-hub",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "extension.mjs",
+  "dependencies": {
+    "@github/copilot-sdk": "latest"
+  },
+  "description": "Browse repository GitHub Actions workflows, inspect recent runs, and trigger manual workflow_dispatch runs from a Copilot canvas.",
+  "keywords": [
+    "actions",
+    "canvas",
+    "copilot-extension",
+    "github-actions",
+    "recent-runs",
+    "workflow-dispatch"
+  ]
+}