ci: wire orchestrator integration tests into integrity check

- Add workflow_call trigger to validate-orchestrator-integration.yml
  so other workflows can invoke the exhaustive test suite
- Add orchestrator-integration job to integrity-check.yml that runs
  on pushes to main (skipped on PRs to avoid 1-2h CI time)
- Daily cron + manual dispatch remain as fallback triggers

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

.github/workflows/integrity-check.yml

@@ -31,3 +31,9 @@ jobs:
       - run: bash <(curl -s https://codecov.io/bash)
       - run: yarn build || { echo "build command should always succeed" ; exit 61; }
   #      - run: yarn build --quiet && git diff --quiet dist || { echo "dist should be auto generated" ; git diff dist ; exit 62; }
+
+  orchestrator-integration:
+    name: Orchestrator Integration
+    if: github.event_name == 'push'
+    uses: ./.github/workflows/validate-orchestrator-integration.yml
+    secrets: inherit

.github/workflows/validate-orchestrator-integration.yml

@@ -12,6 +12,7 @@ name: Orchestrator Integration Tests
 
 on:
   workflow_dispatch:
+  workflow_call: # Allow integrity-check.yml and other workflows to invoke these tests
   schedule:
     - cron: '0 3 * * *' # Daily at 3 AM UTC