Replaces the commit 2 placeholder with the real OutboxSourceKind::Invoke
handler.
build_invoke_request(row) hydrates an (ResolvedTrigger, ExecRequest)
pair from a payload InvokeService::enqueue_async wrote. Validates:
- script_id present + parses as UUID
- script exists
- script.app_id == row.app_id (defensive — re-check the cross-app
boundary; same-app was already verified at enqueue time)
Synthesized ResolvedTrigger carries retry_max_attempts = 1 so the
existing handle_failure path skips the retry loop. invoke_async runs
exactly once; on throw the row is deleted + a dead_letters row written
(handle_failure already does this when attempt >= max_attempts), so a
caller who wants retry semantics wraps the call site in retry::with.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>