Add 7 #[ignore] e2e tests (one per trigger type) that fire real messages
to external services and verify job creation in v2_job. Also add 9 DB-level
CRUD tests for MQTT, GCP, and Email triggers.
Includes helper shell scripts in tests/fixtures/ to start/stop each
external service (MQTT, WebSocket, Postgres replication, Kafka, NATS,
SQS via LocalStack, GCP Pub/Sub emulator).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
