C-42: blocked workplan with no wait task (CUST-WP-0074-T06)

Blocked-with-nothing-waiting is a stale status; warn until a qualified
wait task exists or the workplan is re-statused.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: sonnet
Assistant-Process: 237582@bnt-lap001
Assistant-Session: f2b3d9f1-8fb9-4b9c-bc2b-837ec5dfc826

tests/test_consistency_check.py

@@ -2442,6 +2442,31 @@ class TestTaskWaitQualifiers:
         assert len(self._issues(report, "C-39")) == 1
         assert self._issues(report, "C-40") == []
 
+    def test_c42_blocked_workplan_without_wait_task(self, tmp_path, monkeypatch):
+        # A blocked workplan whose only task is todo states nothing about what
+        # it waits for (CUST-WP-0074-T06). The head fixture is `blocked`.
+        repo = self._make_repo(
+            tmp_path,
+            "id: STATE-WP-0001-T01\nstatus: todo\npriority: high\n"
+            "state_hub_task_id: \"task-1\"",
+        )
+        self._install(monkeypatch, self._fake_get(repo))
+        report = check_repo("http://unused", "demo-repo")
+        c42 = self._issues(report, "C-42")
+        assert len(c42) == 1 and c42[0].fixable is False
+        assert "has no task in status wait" in c42[0].message
+
+        # A qualified wait task satisfies it.
+        repo = self._make_repo(
+            tmp_path / "ok",
+            "id: STATE-WP-0001-T01\nstatus: wait\npriority: high\n"
+            "state_hub_task_id: \"task-1\"\nneeds_human: true\n"
+            "blocking_reason: \"operator decision\"",
+        )
+        self._install(monkeypatch, self._fake_get(repo))
+        report = check_repo("http://unused", "demo-repo")
+        assert self._issues(report, "C-42") == []
+
     def test_c41_ignores_blocks_that_do_not_carry_the_keys(self, tmp_path, monkeypatch):
         repo = self._make_repo(
             tmp_path,