test: lock task lifecycle protections

tests/test_task_breakdown_policy.py

@@ -6,6 +6,7 @@ class TaskBreakdownPolicyTest(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls.skill = Path(__file__).parents[1].joinpath("SKILL.md").read_text()
+        cls.task_section = cls.skill.split("## Task and Dependency Breakdown", 1)[1].split("## Version Allocation", 1)[0]
 
     def test_architecture_owns_complete_release_task_breakdown(self):
         required = [
@@ -18,11 +19,10 @@ class TaskBreakdownPolicyTest(unittest.TestCase):
             "must not report planning readiness",
         ]
         for marker in required:
-            self.assertIn(marker, self.skill)
+            self.assertIn(marker, self.task_section)
 
     def test_task_lifecycle_and_readiness_rules_are_fail_closed(self):
         required = [
-            "version: 1.7.0",
             "repository/component owner",
             "acceptance-evidence requirements",
             "implementation artifacts",
@@ -42,9 +42,13 @@ class TaskBreakdownPolicyTest(unittest.TestCase):
             "pre-approval state",
             "renewed human `Approved for Implementation`",
             "separate exact-task Kanban Focus admission",
+            "Approved, Kanban-admitted, in-progress, or completed Tasks must not be deleted or silently rewritten.",
+            "Retain an obsolete Task with a terminal Superseded or Cancelled status, its prior evidence and history, and explicit replacement links.",
+            "A material change to Task scope, outcome, dependency, repository, or component must invalidate prior readiness evidence",
         ]
+        self.assertIn("version: 1.7.0", self.skill)
         for marker in required:
-            self.assertIn(marker, self.skill)
+            self.assertIn(marker, self.task_section)
 
 
 if __name__ == "__main__":