feat: compact durable logs and refine framework routing

tests/test_concurrency.py

@@ -319,6 +319,45 @@ class ClientPoolConcurrencyTests(unittest.TestCase):
         self.assertEqual("age_policy_skipped", result["reason"])
         self.assertEqual([], client.submitted)
 
+    def test_submit_capacity_exhaustion_is_deferred_not_failed(self) -> None:
+        class CapacityClient:
+            @staticmethod
+            def add_task(_payload):  # noqa: ANN001, ANN205
+                raise ModelHubAPIError("当前等待中或运行中的异步模型验证任务数量已达上限（100）")
+
+        result = submit_candidate(
+            {
+                "repoId": "owner/model",
+                "modelAddress": "https://modelscope.cn/models/owner/model",
+                "targetGpu": "gpu-a",
+                "framework": "vllm",
+                "taskType": "text-generation",
+                "configParams": "safe",
+            },
+            CapacityClient(),  # type: ignore[arg-type]
+        )
+        self.assertEqual("capacity_deferred", result["outcome"])
+        self.assertEqual("account_capacity_saturated", result["reason"])
+
+    def test_transformers_platform_prerequisite_is_deferred_not_failed(self) -> None:
+        class PrerequisiteClient:
+            @staticmethod
+            def add_task(_payload):  # noqa: ANN001, ANN205
+                raise ModelHubAPIError("该模型必须在非transformers框架验证失败后才可以开启transformers框架验证任务")
+
+        result = submit_candidate(
+            {
+                "repoId": "owner/model",
+                "modelAddress": "https://modelscope.cn/models/owner/model",
+                "targetGpu": "gpu-a",
+                "framework": "transformers",
+                "taskType": "text-generation",
+                "configParams": "safe",
+            },
+            PrerequisiteClient(),  # type: ignore[arg-type]
+        )
+        self.assertEqual("framework_prerequisite_deferred", result["outcome"])
+
     def test_age_policy_deferred_candidate_is_skipped_not_failed(self) -> None:
         class AdmissionRaceClient:
             @staticmethod