feat(ship): clarify delivery stop semantics

tests/test_ship_record.py

@@ -244,6 +244,64 @@ def _fill_task(ship_dir: Path) -> None:
 
 
 class NextStepTests(unittest.TestCase):
+    def _prepare_delivery_dispatch(
+        self, root: Path, ship_id: str, stop_at: str, state: str
+    ) -> None:
+        ship_dir = _create(root, ship_id, "short", stop_at=stop_at)
+        (ship_dir / "spec.md").write_text(FILLED_SPEC, encoding="utf-8")
+        _fill_task(ship_dir)
+        _patch_current(ship_dir, delivery_state=state)
+        data = safe_load((ship_dir / "current.yaml").read_text(encoding="utf-8"))
+        data["evidence"]["commits"] = [{"sha": "abc1234deadbeef", "role": "head"}]
+        (ship_dir / "current.yaml").write_text(safe_dump(data), encoding="utf-8")
+
+    def test_stop_at_mappings_cover_each_delivery_boundary(self) -> None:
+        cases = (
+            ("develop_verified", "change_ready", "verify", "verified"),
+            ("review_ready", "verified", "open_pr", "pr_opened"),
+            ("release_ready", "merged", "regress", "regression_passed"),
+            ("released", "artifact_built", "publish", "published"),
+            ("deployed", "published", "deploy", "deployed"),
+        )
+        for stop_at, state, step, target in cases:
+            with self.subTest(stop_at=stop_at):
+                with tempfile.TemporaryDirectory() as tmp:
+                    root = Path(tmp)
+                    ship_id = f"ship-{stop_at.replace('_', '-')}"
+                    self._prepare_delivery_dispatch(root, ship_id, stop_at, state)
+                    doc = _next(root, ship_id, "short")
+                    self.assertEqual(doc["step"], step)
+                    self.assertEqual(doc["targetState"], target)
+
+    def test_legacy_stop_at_names_resolve_to_new_boundaries(self) -> None:
+        cases = (
+            ("verified", "change_ready", "verify", "verified"),
+            ("validation_ready", "merged", "regress", "regression_passed"),
+        )
+        for stop_at, state, step, target in cases:
+            with self.subTest(stop_at=stop_at):
+                with tempfile.TemporaryDirectory() as tmp:
+                    root = Path(tmp)
+                    ship_id = f"legacy-{stop_at.replace('_', '-')}"
+                    self._prepare_delivery_dispatch(root, ship_id, stop_at, state)
+                    doc = _next(root, ship_id, "short")
+                    self.assertEqual(doc["step"], step)
+                    self.assertEqual(doc["targetState"], target)
+
+    def test_invalid_stop_at_fails_ship_validation(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+            result = _run(
+                CREATE,
+                "--project-root", str(root),
+                "--ship-id", "invalid-stop-at",
+                "--kind", "short",
+                "--title", "无效停止点",
+                "--stop-at", "not_a_stop_point",
+            )
+            self.assertNotEqual(result.returncode, 0)
+            self.assertIn("stopAt 无效", result.stderr)
+
     def test_new_short_ship_writes_spec(self) -> None:
         with tempfile.TemporaryDirectory() as tmp:
             root = Path(tmp)