[Fix] Fast automation Run now requests time out

[roomote-roomote]

​Opened on behalf of @mrubens. Follow up by mentioning @roomote-roomote, in the web UI, or in Slack.

What changed

• Accept manual Fast custom automation runs after atomically claiming and enqueueing them, returning an invocation ID without waiting for the full agent turn.
• Add durable BullMQ execution with queued, running, succeeded, and failed status polling through both the API and the custom automation management tool.
• Renew active claim leases, reject expired queued work, disable stalled-job replay, and fence cleanup so concurrent or recovered launches cannot duplicate external effects.
• Stop describing timed-out non-idempotent platform API requests as safe to retry.

Why this change was made

Manual Fast runs previously held the API request open for the entire agent turn. Runs longer than the worker's two-minute platform API deadline completed successfully on the server but appeared to fail to the caller, making an unsafe duplicate retry likely.

Impact

Fast custom automation runs now acknowledge promptly and remain observable through a durable invocation status. Scheduled automation execution keeps its existing evaluator path, no database migration is required, and the existing settings experience continues to show that the automation is running.

[roomote-community]

1 issue outstanding. See task

• Queued cron Fast runs can execute after the automation is disabled (packages/sdk/src/server/automations/custom-automations.ts:721).

_{Reviewed e0be586}

[roomote-community]

This validates the fence and execution mode but not the current enabled value. A Fast automation on a cron schedule can be disabled after run_now returns accepted but before this worker picks up the job; launchCustomAutomationRow bypasses its disabled guard for cron schedules during manual runs, so the queued invocation still sends the external Fast event. Reject and finalize the invocation when the freshly loaded automation is disabled, and add that queued-then-disabled regression case.