feat(ack): support project agent routing overrides

tests/test_ack_skill.py

@@ -28,6 +28,9 @@ class AckSkillContentTests(unittest.TestCase):
             "select_knowledge.py",
             "select_regression.py",
             "references/kickoff.md",
+            "agents.yaml",
+            "validate_agents.py",
+            "model: null",
             "不要修改项目的 `AGENTS.md`",
             "当前会话担任 Coordinator",
             "intents.testEnvironment",
@@ -137,6 +140,10 @@ class AckSkillContentTests(unittest.TestCase):
             "scripts/run_verification.py",
             "scripts/worker_profiles.py",
             "scripts/launch_worker.py",
+            "scripts/validate_agents.py",
+            "templates/agents.schema.json",
+            "templates/agents.template.yaml",
+            "examples/agents.example.yaml",
             "templates/delivery.template.yaml",
             "templates/delivery.schema.json",
             "examples/delivery.example.yaml",
@@ -144,7 +151,7 @@ class AckSkillContentTests(unittest.TestCase):
         ):
             self.assertTrue((ack_dir / relative_path).is_file(), relative_path)
         version = (ack_dir / "VERSION").read_text(encoding="utf-8").strip()
-        self.assertEqual(version, "0.19.0")
+        self.assertEqual(version, "0.20.0")
         self.assertIn(
             f'ackVersion: "{version}"',
             (ack_dir / "examples" / "tasks.example.yaml").read_text(encoding="utf-8"),