Restore CI workflow: build, test, offline demo, flaky repair-loop check

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: HelloThisWorld

.github/workflows/ci.yml

@@ -0,0 +1,57 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-test-forge:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Test
+        run: npm test
+
+      - name: Run default forge demo (offline)
+        run: npm run forge
+
+      - name: Verify demo outputs
+        run: |
+          test -f runs/latest/reports/report.html
+          test -f runs/latest/reports/summary.json
+          ls dist/calendar-scheduling-skill-*.zip
+          ls runs/latest/dist/calendar-scheduling-skill-*.zip
+          node -e "const s=require('./runs/latest/reports/summary.json'); if(!s.passed){console.error('demo run did not pass the quality gate'); process.exit(1);}"
+
+      - name: Run flaky demo (repair loop)
+        run: npm run forge:flaky
+
+      - name: Verify flaky demo exercised the repair loop
+        run: |
+          node -e "const s=require('./runs/latest-flaky/reports/summary.json'); if(s.repairAttempts<1){console.error('flaky demo did not perform a repair'); process.exit(1);}"
+
+      - name: Upload run reports
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: forge-reports
+          path: |
+            runs/latest/reports/
+            runs/latest-flaky/reports/
+          if-no-files-found: ignore