feat: BreakPilot PWA - Full codebase (clean push without large binaries)

All services: admin-v2, studio-v2, website, ai-compliance-sdk,
consent-service, klausur-service, voice-service, and infrastructure.
Large PDFs and compiled binaries excluded via .gitignore.

backend/tests/test_integration/__init__.py

@@ -0,0 +1,16 @@
+"""
+Integration tests that require external services.
+
+These tests run in the Woodpecker CI integration pipeline
+(.woodpecker/integration.yml) which provides:
+- PostgreSQL database
+- Valkey/Redis cache
+
+To run locally:
+    docker compose -f docker-compose.test.yml up -d postgres-test valkey-test
+    export DATABASE_URL=postgresql://breakpilot:breakpilot_test@localhost:55432/breakpilot_test
+    export VALKEY_URL=redis://localhost:56379
+    export SKIP_INTEGRATION_TESTS=false
+    pytest tests/test_integration/ -v
+    docker compose -f docker-compose.test.yml down -v
+"""