test(plugin): validate agent integration manifests in CI

.cursor-plugin/plugin.json

@@ -3,8 +3,7 @@
   "version": "0.3.0",
   "description": "Getting-started router skill for Rayfin - scaffold a new app with the Rayfin CLI, then use the version-locked skill installed in the project.",
   "author": {
-    "name": "Microsoft",
-    "url": "https://www.microsoft.com"
+    "name": "Microsoft"
   },
   "homepage": "https://github.com/microsoft/rayfin",
   "repository": "https://github.com/microsoft/rayfin",

.github/workflows/validate-agent-integrations.yml

@@ -0,0 +1,63 @@
+name: Validate agent integrations
+
+on:
+  pull_request:
+    paths:
+      - '.agents/**'
+      - '.claude-plugin/**'
+      - '.codex-plugin/**'
+      - '.cursor-plugin/**'
+      - '.github/plugin/**'
+      - '.grok-plugin/**'
+      - '.kimi-plugin/**'
+      - '.plugin/**'
+      - 'gemini-extension.json'
+      - 'kimi-marketplace.json'
+      - 'plugin.json'
+      - 'skills/**'
+      - 'tests/**'
+      - 'package.json'
+      - 'package-lock.json'
+      - '.github/workflows/validate-agent-integrations.yml'
+  push:
+    branches:
+      - main
+    paths:
+      - '.agents/**'
+      - '.claude-plugin/**'
+      - '.codex-plugin/**'
+      - '.cursor-plugin/**'
+      - '.github/plugin/**'
+      - '.grok-plugin/**'
+      - '.kimi-plugin/**'
+      - '.plugin/**'
+      - 'gemini-extension.json'
+      - 'kimi-marketplace.json'
+      - 'plugin.json'
+      - 'skills/**'
+      - 'tests/**'
+      - 'package.json'
+      - 'package-lock.json'
+      - '.github/workflows/validate-agent-integrations.yml'
+
+permissions:
+  contents: read
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    env:
+      DO_NOT_TRACK: '1'
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: actions/setup-node@v5
+        with:
+          node-version: 22
+          cache: npm
+
+      - run: npm ci
+      - run: npm test
+      - run: npx --yes @anthropic-ai/claude-code@2.1.237 plugin validate .
+      - run: npx --yes @google/gemini-cli@0.57.0-preview.0 extensions validate .

.gitignore

@@ -0,0 +1 @@
+node_modules/

CONTRIBUTING.md

@@ -35,7 +35,7 @@ Use the [Feature Request](https://github.com/microsoft/rayfin/issues/new?templat
 1. Fork the repository and create a branch for your change.
 2. Keep pull requests scoped to a focused set of changes.
 3. Include a clear description of the change and its rationale.
-4. Run any existing linters, builds, and tests before submitting.
+4. Run `npm install` once, then `npm test` before submitting changes to agent skills, plugins, or marketplaces.
 
 ## Commit Messages