[artem-broccoli]

Summary

A process can now run after the change that triggers it is saved, so slow steps or steps that reach outside systems never hold up or fail the save.

• An on_event trigger takes "run": "after_commit" (no faultMode). Before the change commits, each matching after-commit process gets one processes.startRunsAfterCommit job per event, queued in the change's transaction: a rollback drops it, the commit makes it runnable.
• The job starts the runs in its own transaction with the process version that matched the event. It locks the process, so its jobs take turns, and skips a process turned off in the meantime, records that are gone or have a run in progress, and records that already have this event's run (start_key). A retry or a second delivery starts nothing.
• Failures are retried by the job runner (three attempts); a last failure is logged with the process, version and event ids.
• Transactions carry a hop count (tx.hop, set with transact(work, { hop })). A job queued from a job's transaction is one hop further; none is queued past 10 hops, so after-commit processes that trigger each other stop.
• In-transaction triggers are unchanged. Jobs run in no particular order.

Testing

• New integration tests: the change commits with only a job queued, the job starts one run and a second delivery starts none; in-transaction and after-commit processes on the same event; a non-matching when queues nothing; a gone record, a turned-off process, a carried older version; a self-triggering process stops after 10 hops. Domain tests for the trigger shapes, a transaction test for the hop.
• Manually with pnpm dev: turned on an after-commit process on employees.added, added a person and killed the API container straight away. The person was saved, one job waited (hop 1), no run existed. After restarting the API the job completed and started exactly one run with its task. A copy of the same job then completed and started nothing (already_started logged). A job with a broken version id failed three attempts and logged one error with its ids.
• pnpm check, pnpm test:integration and pnpm test:e2e pass.

Release Notes:

• N/A