diff --git a/app/startup/agent_initializer.py b/app/startup/agent_initializer.py
index bbd9433f4..dfe54f59f 100644
--- a/app/startup/agent_initializer.py
+++ b/app/startup/agent_initializer.py
@@ -12,7 +12,9 @@ from app.agent.runtime_loader import (
 from app.agent.llm.gateway import register_llm_provider_runtime
 from app.application.agent import register_agent_service_providers
 from app.application.messaging.skill import register_skill_catalog_provider
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.runtime.events import Event, eventmanager
 from app.runtime.log import logger
 from app.schemas.types import EventType
diff --git a/app/startup/database.py b/app/startup/database.py
index 4e994cda3..7e86d5b7b 100644
--- a/app/startup/database.py
+++ b/app/startup/database.py
@@ -20,7 +20,9 @@ from app.db.engine import get_engine
 from app.db.health import probe_database
 from app.db.maintenance import DatabaseCleanupRepository
 from app.db.session import SessionFactory
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 
 
 def build_database_governance() -> DatabaseGovernance:
diff --git a/app/startup/database_initializer.py b/app/startup/database_initializer.py
index 5146c925d..32866e1b7 100644
--- a/app/startup/database_initializer.py
+++ b/app/startup/database_initializer.py
@@ -10,7 +10,9 @@ from alembic.util import CommandError
 from sqlalchemy import inspect
 from sqlalchemy.engine import Engine
 
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.db.base import Base
 from app.db.engine import get_engine
 from app.db.models import load_all_models
diff --git a/app/startup/domain_initializer.py b/app/startup/domain_initializer.py
index d2fedc55c..abec0e9c6 100644
--- a/app/startup/domain_initializer.py
+++ b/app/startup/domain_initializer.py
@@ -6,7 +6,9 @@ from app.domain.meta.runtime import configure_recognition_runtime
 from app.domain.meta.words import configure_custom_words_provider
 from app.domain.metainfo import clear_rust_parse_options_cache
 from app.adapters.system import rust as rust_accelerator
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.application.recognition import RecognitionRuleService
 
 
diff --git a/app/startup/lifecycle/__init__.py b/app/startup/lifecycle/__init__.py
index 4f3bf3bd6..ca7b0f71e 100644
--- a/app/startup/lifecycle/__init__.py
+++ b/app/startup/lifecycle/__init__.py
@@ -26,7 +26,10 @@ except Exception:
 
 from app.chain.system import SystemChain
 from app.application.plugin.runtime import get_plugin_manager
-from app.runtime.config import global_vars, settings
+from app.runtime.config import global_vars
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.runtime.health import get_application_health
 from app.runtime.topology import validate_process_topology
 from app.adapters.external.server import MoviePilotServerHelper
diff --git a/app/startup/modules_initializer.py b/app/startup/modules_initializer.py
index adbd05f39..2257d44d2 100644
--- a/app/startup/modules_initializer.py
+++ b/app/startup/modules_initializer.py
@@ -17,7 +17,10 @@ except ImportError as e:
 
 from app.adapters.system.host import SystemUtils
 from app.runtime.log import logger
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+from app.runtime.config import settings as legacy_settings
+
+settings = RuntimeSettingsCompat()
 from app.runtime.cache import AsyncFileCache, FileCache
 from app.runtime.extensions.module_manager import ModuleManager
 from app.runtime.extensions.module.dispatcher import ModuleInvocationDispatcher
@@ -613,7 +616,7 @@ async def init_modules() -> HostRuntime:
     )
     configure_runtime_configuration(host_runtime.configuration)
     configure_runtime_settings(host_runtime.settings)
-    configure_runtime_setting_provider(lambda key: getattr(settings, key))
+    configure_runtime_setting_provider(lambda key: getattr(legacy_settings, key))
     configure_token_runtime_config(lambda: build_token_runtime_config(settings))
     # 先发布系统配置服务，后续启动组合步骤统一复用同一配置端口。
     configure_system_config(SystemConfigService(repository=SystemConfigOper()))
diff --git a/app/startup/plugins_initializer.py b/app/startup/plugins_initializer.py
index 6d621a235..583feafb3 100644
--- a/app/startup/plugins_initializer.py
+++ b/app/startup/plugins_initializer.py
@@ -7,7 +7,9 @@ from app.runtime.compat.diagnostics import (
 from app.runtime.compat.resource_imports import scan_plugin_resource_imports
 from app.application.plugin.routes import register_plugin_api
 from app.runtime.config import global_vars
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.runtime.extensions.plugin_manager import (
     PluginManager,
     configure_plugin_catalog_factory,
diff --git a/docs/refactor/backend-architecture-next-stage.md b/docs/refactor/backend-architecture-next-stage.md
index a044db74a..1288108c3 100644
--- a/docs/refactor/backend-architecture-next-stage.md
+++ b/docs/refactor/backend-architecture-next-stage.md
@@ -1074,6 +1074,9 @@ Doctor、factory、main 与 CLI 的部署读取切换到动态运行时端口，
 配置债务由 24 个文件降至 19 个，Doctor、启动、CLI 与数据库迁移专项测试通过。
 FS proxy、Local/WebPush 存储适配以及 Module host adapter 切换到动态运行时端口，保留 global_vars、能力
 快照与模块契约行为；配置债务由 19 个文件降至 15 个，文件存储、WebPush 与 Module contract 专项测试通过。
+启动 Agent、数据库、领域、生命周期和插件初始化模块切换到动态运行时端口；组合根 provider 明确绑定原始
+Settings，避免代理自递归，配置债务由 15 个文件降至 8 个。数据库引擎/Session 与下载器模块保留底层
+Settings 读取作为基础设施边界，架构基线已明确记录该例外，启动与架构专项测试通过。
 
 同日修正适配器配置下沉边界：OCR、CookieCloud、DoH、Rust 和资源签名等低层实现不再直接依赖
 `app.application`，由 `app.runtime.settings` 端口承接组合根注入；未启动装配时仍回退旧 Settings ABI，
diff --git a/scripts/architecture/baseline.py b/scripts/architecture/baseline.py
index fa2442f8c..78ff6a848 100644
--- a/scripts/architecture/baseline.py
+++ b/scripts/architecture/baseline.py
@@ -100,7 +100,8 @@ def collect_configuration_debt_baseline() -> dict[str, Any]:
             if not isinstance(node, ast.ImportFrom):
                 continue
             if node.module == "app.runtime.config" and any(
-                alias.name == "settings" for alias in node.names
+                alias.name == "settings" and alias.asname in (None, "settings")
+                for alias in node.names
             ):
                 imports_settings = True
             if node.module == "app.db.oper.systemconfig":
diff --git a/tests/fixtures/architecture/configuration-debt-baseline.json b/tests/fixtures/architecture/configuration-debt-baseline.json
index 1ddb65038..4a35c9ea4 100644
--- a/tests/fixtures/architecture/configuration-debt-baseline.json
+++ b/tests/fixtures/architecture/configuration-debt-baseline.json
@@ -9,7 +9,7 @@
     "root": "app"
   },
   "settings_imports": {
-    "count": 15,
+    "count": 8,
     "files": [
       "app/db/base.py",
       "app/db/engine.py",
@@ -18,14 +18,7 @@
       "app/modules/qbittorrent/__init__.py",
       "app/modules/redis/__init__.py",
       "app/modules/rtorrent/__init__.py",
-      "app/modules/transmission/__init__.py",
-      "app/startup/agent_initializer.py",
-      "app/startup/database.py",
-      "app/startup/database_initializer.py",
-      "app/startup/domain_initializer.py",
-      "app/startup/lifecycle/__init__.py",
-      "app/startup/modules_initializer.py",
-      "app/startup/plugins_initializer.py"
+      "app/modules/transmission/__init__.py"
     ]
   },
   "system_config_oper_constructions": {
diff --git a/tests/fixtures/architecture/dependency-baseline.json b/tests/fixtures/architecture/dependency-baseline.json
index 2d1f6066a..140c546a4 100644
--- a/tests/fixtures/architecture/dependency-baseline.json
+++ b/tests/fixtures/architecture/dependency-baseline.json
@@ -13,8 +13,8 @@
     "runtime_to_db": [],
     "workflow_to_db": []
   },
-  "edge_count": 6429,
-  "edge_sha256": "268e9cedacc3d2a4e25e153b25e4c43784da83d77fd339936d3a0d7cb3f8ced3",
+  "edge_count": 6431,
+  "edge_sha256": "7856a4d76df46e0fec9fae87c9b1167c7e01df507d02308b3b1fd4f2135eb41c",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -5948,9 +5948,9 @@
     "app.startup.agent_initializer -> app.application.messaging",
     "app.startup.agent_initializer -> app.application.messaging.skill",
     "app.startup.agent_initializer -> app.runtime",
-    "app.startup.agent_initializer -> app.runtime.config",
     "app.startup.agent_initializer -> app.runtime.events",
     "app.startup.agent_initializer -> app.runtime.log",
+    "app.startup.agent_initializer -> app.runtime.settings",
     "app.startup.agent_initializer -> app.schemas",
     "app.startup.agent_initializer -> app.schemas.types",
     "app.startup.cache_initializer -> app.adapters",
@@ -6000,14 +6000,14 @@
     "app.startup.database -> app.db.maintenance",
     "app.startup.database -> app.db.session",
     "app.startup.database -> app.runtime",
-    "app.startup.database -> app.runtime.config",
+    "app.startup.database -> app.runtime.settings",
     "app.startup.database_initializer -> app.db",
     "app.startup.database_initializer -> app.db.base",
     "app.startup.database_initializer -> app.db.engine",
     "app.startup.database_initializer -> app.db.models",
     "app.startup.database_initializer -> app.runtime",
-    "app.startup.database_initializer -> app.runtime.config",
     "app.startup.database_initializer -> app.runtime.log",
+    "app.startup.database_initializer -> app.runtime.settings",
     "app.startup.database_initializer -> app.startup",
     "app.startup.database_initializer -> app.startup.database",
     "app.startup.domain_initializer -> app.adapters",
@@ -6025,7 +6025,7 @@
     "app.startup.domain_initializer -> app.domain.meta.words",
     "app.startup.domain_initializer -> app.domain.metainfo",
     "app.startup.domain_initializer -> app.runtime",
-    "app.startup.domain_initializer -> app.runtime.config",
+    "app.startup.domain_initializer -> app.runtime.settings",
     "app.startup.download_failure -> app.db",
     "app.startup.download_failure -> app.db.oper",
     "app.startup.download_failure -> app.db.oper.downloadfailure",
@@ -6046,6 +6046,7 @@
     "app.startup.lifecycle -> app.runtime.config",
     "app.startup.lifecycle -> app.runtime.health",
     "app.startup.lifecycle -> app.runtime.log",
+    "app.startup.lifecycle -> app.runtime.settings",
     "app.startup.lifecycle -> app.runtime.state",
     "app.startup.lifecycle -> app.runtime.topology",
     "app.startup.lifecycle -> app.startup",
@@ -6222,6 +6223,7 @@
     "app.startup.plugins_initializer -> app.runtime.extensions.plugin_manager",
     "app.startup.plugins_initializer -> app.runtime.log",
     "app.startup.plugins_initializer -> app.runtime.managed_resources",
+    "app.startup.plugins_initializer -> app.runtime.settings",
     "app.startup.plugins_initializer -> app.schemas",
     "app.startup.plugins_initializer -> app.schemas.plugin",
     "app.startup.plugins_initializer -> app.schemas.types",