refactor: inject runtime settings compatibility service

app/application/configuration.py

@@ -386,6 +386,9 @@ def configure_runtime_settings(service: RuntimeSettingsService) -> None:
     """由组合根登记管理 API 使用的部署设置服务。"""
     global _runtime_settings_service
     _runtime_settings_service = service
+    from app.runtime.settings import configure_runtime_settings_compat
+
+    configure_runtime_settings_compat(service)
 
 
 def get_runtime_settings() -> RuntimeSettingsService:

app/runtime/settings.py

@@ -9,6 +9,7 @@ from typing import Any
 
 RuntimeSettingProvider = Callable[[str], Any]
 _provider: RuntimeSettingProvider | None = None
+_runtime_settings_service: Any | None = None
 # 测试和插件可能临时替换某个模块上的 importlib.import_module；保存原始函数，
 # 让兼容代理的 legacy Settings 解析不受这类局部替身影响。
 _import_module = importlib.import_module
@@ -42,32 +43,29 @@ class RuntimeSettingsCompat:
         **kwargs: Any,
     ) -> dict[str, Any]:
         """导出当前配置快照，保留旧 Settings 的序列化入口。"""
-        try:
-            from app.application.configuration import get_runtime_settings
-
-            return get_runtime_settings().snapshot(include=include, exclude=exclude)
-        except RuntimeError:
-            return self._legacy_settings().model_dump(
-                include=include, exclude=exclude, **kwargs
-            )
+        if _runtime_settings_service is not None:
+            return _runtime_settings_service.snapshot(include=include, exclude=exclude)
+        return self._legacy_settings().model_dump(
+            include=include, exclude=exclude, **kwargs
+        )
 
     def update_setting(self, key: str, value: Any) -> tuple[Any, str]:
         """更新单项配置，兼容插件对模块级 Settings 的公开调用。"""
-        try:
-            from app.application.configuration import get_runtime_settings
-
-            return get_runtime_settings().update(key, value)
-        except RuntimeError:
-            return self._legacy_settings().update_setting(key, value)
+        if _runtime_settings_service is not None:
+            return _runtime_settings_service.update(key, value)
+        return self._legacy_settings().update_setting(key, value)
 
     def update_settings(self, env: dict[str, Any]) -> dict[str, tuple[Any, str]]:
         """批量更新配置，兼容旧 Settings 的管理接口。"""
-        try:
-            from app.application.configuration import get_runtime_settings
+        if _runtime_settings_service is not None:
+            return _runtime_settings_service.update_many(env)
+        return self._legacy_settings().update_settings(env=env)
 
-            return get_runtime_settings().update_many(env)
-        except RuntimeError:
-            return self._legacy_settings().update_settings(env=env)
+
+def configure_runtime_settings_compat(service: Any) -> None:
+    """由应用组合根注入可变配置服务，避免低层代理反向导入应用层。"""
+    global _runtime_settings_service
+    _runtime_settings_service = service
 
 
 def configure_runtime_setting_provider(provider: RuntimeSettingProvider) -> None:

tests/fixtures/architecture/dependency-baseline.json

@@ -13,8 +13,8 @@
     "runtime_to_db": [],
     "workflow_to_db": []
   },
-  "edge_count": 6431,
-  "edge_sha256": "7856a4d76df46e0fec9fae87c9b1167c7e01df507d02308b3b1fd4f2135eb41c",
+  "edge_count": 6432,
+  "edge_sha256": "96bead9b5bbbf10d49a5be50d7d9dc33f47e23010ef28d02a17aebfc3b250e4f",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -404,8 +404,6 @@
     "app.agent.skills.registry -> app.agent",
     "app.agent.skills.registry -> app.agent.skills",
     "app.agent.skills.registry -> app.agent.skills.metadata",
-    "app.agent.skills.registry -> app.application",
-    "app.agent.skills.registry -> app.application.configuration",
     "app.agent.skills.registry -> app.foundation",
     "app.agent.skills.registry -> app.foundation.singleton",
     "app.agent.skills.registry -> app.foundation.url",
@@ -2468,6 +2466,8 @@
     "app.application.chain.durable_events -> app.schemas.file",
     "app.application.chain.durable_events -> app.schemas.transfer",
     "app.application.chain.durable_events -> app.schemas.types",
+    "app.application.configuration -> app.runtime",
+    "app.application.configuration -> app.runtime.settings",
     "app.application.configuration -> app.schemas",
     "app.application.configuration -> app.schemas.types",
     "app.application.dashboard -> app.schemas",
@@ -3667,6 +3667,7 @@
     "app.db.oper.user -> app.db.models.user",
     "app.db.oper.userconfig -> app.db",
     "app.db.oper.userconfig -> app.db.base",
+    "app.db.oper.userconfig -> app.db.decorators",
     "app.db.oper.userconfig -> app.db.models",
     "app.db.oper.userconfig -> app.db.models.userconfig",
     "app.db.oper.userconfig -> app.foundation",