feat(ship): merge short-ship and long-ship into one entry

Promote ship to the user-facing delivery skill. Kind is short or long
from an explicit mode, then self-judgment, then a question, defaulting
to short. Old names remain deprecation stubs.

tests/test_ship_record.py

@@ -203,16 +203,16 @@ def _create(root: Path, ship_id: str, kind: str, *, stop_at: str | None = None)
     return root / ".pouch" / "ship" / ship_id
 
 
-def _next(root: Path, ship_id: str, entry: str) -> dict:
-    result = _run(
-        NEXT,
+def _next(root: Path, ship_id: str, entry: str | None = None) -> dict:
+    args = [
         "--project-root",
         str(root),
         "--ship-id",
         ship_id,
-        "--entry",
-        entry,
-    )
+    ]
+    if entry is not None:
+        args.extend(["--entry", entry])
+    result = _run(NEXT, *args)
     if result.returncode != 0:
         raise AssertionError(result.stderr or result.stdout)
     return json.loads(result.stdout)
@@ -404,11 +404,36 @@ class NextStepTests(unittest.TestCase):
             self.assertIn("不要自己做", doc["summary"])
 
     def test_entry_skills_are_managers(self) -> None:
-        for name in ("short-ship", "long-ship", "pr-ship"):
+        for name in ("ship", "pr-ship"):
             text = (REPO_ROOT / "skills" / name / "SKILL.md").read_text(encoding="utf-8")
             self.assertIn("开新 agent", text)
             self.assertNotIn("读取并执行", text)
 
+    def test_next_step_infers_entry_from_kind(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+            _create(root, "add-export-button", "short", stop_at="verified")
+            doc = _next(root, "add-export-button")
+            self.assertEqual(doc["entry"], "short")
+            self.assertEqual(doc["step"], "write_spec")
+
+            _create(root, "tenant-permissions", "long")
+            doc = _next(root, "tenant-permissions")
+            self.assertEqual(doc["entry"], "long")
+            self.assertEqual(doc["step"], "specifier_new")
+
+            missing = _run(
+                NEXT,
+                "--project-root",
+                str(root),
+                "--ship-id",
+                "does-not-exist",
+            )
+            self.assertEqual(missing.returncode, 0, missing.stderr)
+            blocked = json.loads(missing.stdout)
+            self.assertEqual(blocked["entry"], "short")
+            self.assertEqual(blocked["step"], "ensure_record")
+
 
 if __name__ == "__main__":
     unittest.main()