chore: align repo structure with plugin conventions

Add missing config files (.eslintrc.js, .prettierrc.js, .pluginrc,
.mcp.json, renovate.json), documentation (CLAUDE.md, CONTRIBUTING.md,
README.md, SECURITY.md, LICENSE), CI/CD workflows (ci.yaml, release.yaml),
and Claude agent definitions. Rename package from headlamp-intel-gpu-plugin
to intel-gpu to match the short-name convention used by all other plugins.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/ci.yaml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_call:
+
+jobs:
+  ci:
+    runs-on: local-ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build plugin
+        run: npx @kinvolk/headlamp-plugin build
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Type-check
+        run: npm run tsc
+
+      - name: Format check
+        run: npm run format:check
+
+      - name: Run tests
+        run: npm test

.github/workflows/release.yaml

@@ -0,0 +1,104 @@
+name: Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Release version (e.g. 1.0.0)'
+        required: true
+        type: string
+
+permissions:
+  contents: write
+
+concurrency:
+  group: release
+  cancel-in-progress: false
+
+jobs:
+  ci:
+    uses: ./.github/workflows/ci.yaml
+
+  release:
+    needs: ci
+    runs-on: local-ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Validate version format
+        run: |
+          if [[ ! "${{ inputs.version }}" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Error: Version must be in X.Y.Z format"
+            exit 1
+          fi
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Configure Git
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Update version in package.json
+        run: npm version ${{ inputs.version }} --no-git-tag-version --allow-same-version
+
+      - name: Update artifacthub-pkg.yml
+        run: |
+          VERSION="${{ inputs.version }}"
+          PKG_NAME=$(jq -r .name package.json)
+          RELEASE_URL="https://github.com/${{ github.repository }}/releases/download/v${VERSION}/${PKG_NAME}-${VERSION}.tar.gz"
+          sed -i "s/^version:.*/version: \"${VERSION}\"/" artifacthub-pkg.yml
+          sed -i "s|headlamp/plugin/archive-url:.*|headlamp/plugin/archive-url: \"${RELEASE_URL}\"|" artifacthub-pkg.yml
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build plugin
+        run: npx @kinvolk/headlamp-plugin build
+
+      - name: Package plugin
+        run: npx @kinvolk/headlamp-plugin package
+
+      - name: Prepare release tarball
+        run: |
+          VERSION="${{ inputs.version }}"
+          PKG_NAME=$(jq -r .name package.json)
+          TARBALL="${PKG_NAME}-${VERSION}.tar.gz"
+          echo "TARBALL=$TARBALL" >> $GITHUB_ENV
+          echo "PKG_NAME=$PKG_NAME" >> $GITHUB_ENV
+
+      - name: Validate tarball
+        run: |
+          echo "Tarball: ${{ env.TARBALL }}"
+          ls -lh "${{ env.TARBALL }}"
+          tar -tzf "${{ env.TARBALL }}" | head -20
+          tar -tzf "${{ env.TARBALL }}" | grep -q "main.js" || { echo "Error: main.js not found in tarball"; exit 1; }
+
+      - name: Compute checksum
+        run: |
+          CHECKSUM=$(sha256sum "${{ env.TARBALL }}" | awk '{print $1}')
+          echo "CHECKSUM=$CHECKSUM" >> $GITHUB_ENV
+          sed -i "s|headlamp/plugin/archive-checksum:.*|headlamp/plugin/archive-checksum: sha256:${CHECKSUM}|" artifacthub-pkg.yml
+
+      - name: Commit and tag
+        run: |
+          VERSION="${{ inputs.version }}"
+          git add package.json package-lock.json artifacthub-pkg.yml
+          git commit -m "release: v${VERSION}"
+          git tag "v${VERSION}"
+          git push origin main --tags
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: v${{ inputs.version }}
+          name: v${{ inputs.version }}
+          generate_release_notes: true
+          files: ${{ env.TARBALL }}