5dc0fa3889
Four fix-forwards from the adversarial post-merge audit of the Aug 7 unreviewed merge batch: - estop (#81148): is_engaged() now fails SAFE (engaged) on stat errors; the gateway estop gate lets recognized slash commands and replies owned by in-flight work (update prompts, clarify, slash-confirm, tool approvals, running sessions) through instead of consuming them; new gateway /pause [reason|off] command gives messaging-only operators an in-band engage/resume path (busy_policy=dispatch so it works mid-run). - cron monitor mode (#81138): execution-mode invariants (monitor x no_agent, monitor_script x monitor_url, no_agent-requires-script) now have ONE owner (_validate_job_mode_invariants) called from BOTH create_job and update_job, so the create-time invariant can no longer be silently violated through the update door. - cron notepad (#81139): remove_job now clears the job's notepad rows (clear_notepad was dead code -> orphaned KV state forever); clear is best-effort and no-ops without creating notepad.db. - delegation batch gate (#81141): template-marker regex narrowed to multi-word placeholder shapes only (<feature name>, {file_path}) so generics (Vec<T>), HTML tags, JSON snippets, glob braces and f-string style no longer reject legitimate batches; duplicate-goal rejection removed (best-of-N fan-outs are legitimate).