diff --git a/app/runtime/event/dispatch.py b/app/runtime/event/dispatch.py
index 8f5563dfb..ca2a5d7d7 100644
--- a/app/runtime/event/dispatch.py
+++ b/app/runtime/event/dispatch.py
@@ -235,17 +235,17 @@ class EventDispatcher:
                     run_sync_in_threadpool=True,
                 )
 
-    def safe_invoke_sync(self, handler: Callable, event: Any) -> None:
+    def safe_invoke_sync(self, handler: Callable[..., object], event: Any) -> None:
         """仅在处理器启用时执行同步调用。"""
         if self._registry.is_handler_enabled(handler):
             self.invoke_sync(handler, event)
 
-    async def safe_invoke_async(self, handler: Callable, event: Any) -> None:
+    async def safe_invoke_async(self, handler: Callable[..., object], event: Any) -> None:
         """仅在处理器启用时执行异步调用。"""
         if self._registry.is_handler_enabled(handler):
             await self.invoke_async(handler, event)
 
-    def invoke_sync(self, handler: Callable, event: Any) -> None:
+    def invoke_sync(self, handler: Callable[..., object], event: Any) -> None:
         """解析实例绑定并同步调用处理器。"""
         resolved = self._binding_resolver.resolve(handler)
         if not resolved:
@@ -300,7 +300,7 @@ class EventDispatcher:
                 )
                 raise
 
-    async def invoke_async(self, handler: Callable, event: Any) -> None:
+    async def invoke_async(self, handler: Callable[..., object], event: Any) -> None:
         """解析实例绑定，并按处理器类型选择协程、线程池或同步调用。"""
         resolved = self._binding_resolver.resolve(handler)
         if not resolved:
@@ -368,7 +368,7 @@ class EventDispatcher:
 
     @staticmethod
     def should_dispatch_to_target_plugin(
-        handler: Callable,
+        handler: Callable[..., object],
         handler_identifier: str,
         target_plugin_id: str,
     ) -> bool:
diff --git a/docs/code-quality.md b/docs/code-quality.md
index f74957682..6fa4be9a7 100644
--- a/docs/code-quality.md
+++ b/docs/code-quality.md
@@ -75,7 +75,7 @@ uv run --locked --no-sync python scripts/architecture/complexity.py
 回调和返回值类型；全仓错误计数为零并不保证单独纳入 strict frontier 后也为零。
 
 2026-10-16 开始逐文件清理类型债务，`app/domain/title.py` 通过局部可空类型声明保留
-既有搜索解析行为，并纳入严格清单；当前清单共 57 个文件（56 个生产文件和 1 个脚本）。
+既有搜索解析行为，并纳入严格清单；当前清单共 58 个文件（57 个生产文件和 1 个脚本）。
 每个治理提交只修改一个生产文件及其必要测试、门禁配置、真实下降基线和指标文档。
 验收同时检查完整严格清单与全宿主 Linux 分析，避免 `follow_imports = skip` 隐藏依赖
 签名冲突；不通过忽略诊断或放宽类型合同接受回退。最新文件清单以 `mypy.ini` 为准，
diff --git a/docs/refactor/optimization-checklist.md b/docs/refactor/optimization-checklist.md
index 8e6a488f5..e3b75e9f4 100644
--- a/docs/refactor/optimization-checklist.md
+++ b/docs/refactor/optimization-checklist.md
@@ -108,7 +108,7 @@ ARCH-201 至 ARCH-204 均达到实现、验证、提交、推送和远端门禁
 | Event Contract | 53 | 均已有 payload model，但当前全部是 diagnostic enforcement |
 | Python 源码量 | 371,953 行 | 本次重新扫描物理行数，排除 `app/plugins/**`；74 个文件超过 1,000 行，12 个超过 2,000 行；源码尺寸仅作观察 |
 | 长方法 | 309 个超过 80 行 | 本次 AST 扫描排除 `app/plugins/**`；61 个超过 150 行，17 个超过 250 行；新增函数仍受 C901/嵌套深度门禁约束 |
-| 全量 mypy 历史债务 | 9,068 / 495 文件 | 通知排版补齐 Slack 消息块类型，历史债务减少 2 项；工作流资源过滤改用领域对象调用过滤链，恢复的节点输出在消费前归一化，并收紧可空资源列表的类型低水位；消息媒体交互类型债务已清零，canonical Facade 与 endpoint 类型边界已补齐，低水位只允许继续下降；微信 ClawBot 入站 item_list 媒体解析改为按子项键名分派后，类型错误减少 4 项；站点解析器分享率改用浮点初值，类型错误减少 20 项；本次下载与文件安全修复再减少 3 项，逐文件逐错误码无增长 |
+| 全量 mypy 历史债务 | 9,063 / 494 文件 | 通知排版补齐 Slack 消息块类型，历史债务减少 2 项；工作流资源过滤改用领域对象调用过滤链，恢复的节点输出在消费前归一化，并收紧可空资源列表的类型低水位；消息媒体交互类型债务已清零，canonical Facade 与 endpoint 类型边界已补齐，低水位只允许继续下降；微信 ClawBot 入站 item_list 媒体解析改为按子项键名分派后，类型错误减少 4 项；站点解析器分享率改用浮点初值，类型错误减少 20 项；本次下载与文件安全修复再减少 3 项，逐文件逐错误码无增长 |
 | Ruff 历史诊断 | 100 | 低水位门禁通过，但规则集只覆盖 `E4/E7/E9/F/I` |
 | 覆盖率固定基线 | Application 80.00%，Domain 80.00% | Chain、Runtime、Agent、Adapter、Startup 未进入包级覆盖率门禁 |
 
diff --git a/mypy.ini b/mypy.ini
index 86e5b5598..d71073469 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -29,6 +29,7 @@ files =
     app/runtime/event/contracts.py,
     app/runtime/event/registry.py,
     app/runtime/event/binding.py,
+    app/runtime/event/dispatch.py,
     app/runtime/event/errors.py,
     app/runtime/extensions/module/contracts.py,
     app/runtime/extensions/module/dispatcher.py,
diff --git a/tests/fixtures/architecture/mypy-baseline.json b/tests/fixtures/architecture/mypy-baseline.json
index b614064ab..ff9b945c7 100644
--- a/tests/fixtures/architecture/mypy-baseline.json
+++ b/tests/fixtures/architecture/mypy-baseline.json
@@ -2412,9 +2412,6 @@
   "app/runtime/event/contracts.py": {
     "arg-type": 1
   },
-  "app/runtime/event/dispatch.py": {
-    "type-arg": 5
-  },
   "app/runtime/events.py": {
     "list-item": 1,
     "misc": 1,