Add long-task-governor skill and wire workflow

skills/long-task-governor/task-record-template.md

@@ -0,0 +1,12 @@
+# Long Task Record Template
+
+- `task_name`:
+- `status`: `active | waiting_user | blocked | paused | pending_verification`
+- `current_step`:
+- `next_step`:
+- `last_milestone_at`:
+- `next_report_condition`:
+- `waiting_on`: `none | user | external | subagent | other`
+- `blocker`: `none | <explicit blocker>`
+- `evidence_count`: 0
+- `evidence_summary`: