diff --git a/app/chain/subscribe/contract.py b/app/chain/subscribe/contract.py
index c3de16a25..b23509d87 100644
--- a/app/chain/subscribe/contract.py
+++ b/app/chain/subscribe/contract.py
@@ -59,6 +59,7 @@ if TYPE_CHECKING:
         _SubscribeChain__resolve_total_episode_decrease: Callable[..., Any]
         _acquire_run_lock: Callable[..., Any]
         _async_recognize_music_subscribe: Callable[..., Awaitable[Any]]
+        _execute_search_task: Callable[..., Any]
         _get_pending_best_version_episodes: Callable[..., Any]
         _is_episode_range_covered: Callable[..., Any]
         _is_music_download_complete: Callable[..., Any]
diff --git a/docs/architecture-overview.md b/docs/architecture-overview.md
index e387e830a..9bd2e4a76 100644
--- a/docs/architecture-overview.md
+++ b/docs/architecture-overview.md
@@ -754,8 +754,8 @@ flowchart LR
 
 | 指标 | 当前值 |
 |---|---:|
-| Python 模块 | 967 |
-| 内部导入边 | 8,121 |
+| Python 模块 | 968 |
+| 内部导入边 | 8,127 |
 | 非平凡 SCC | 1（精确 containment 的 TMDB 移植包环） |
 | Application / Chain 具体 Adapter 直连 | 0 / 0 |
 | Direct egress | 53（债务已清零，53 条精确 containment） |
diff --git a/docs/architecture/optimization-checklist.md b/docs/architecture/optimization-checklist.md
index 91eafae9f..b7f588a52 100644
--- a/docs/architecture/optimization-checklist.md
+++ b/docs/architecture/optimization-checklist.md
@@ -94,7 +94,7 @@ ARCH-201 至 ARCH-204 均达到实现、验证、提交、推送和远端门禁
 
 | 指标 | 当前值 | 解释 |
 |---|---:|---|
-| 宿主 Python 模块 / 内部依赖边 | 967 / 8,121 | `dependency-baseline.json` 当前快照 |
+| 宿主 Python 模块 / 内部依赖边 | 968 / 8,127 | `dependency-baseline.json` 当前快照 |
 | 非平凡 SCC | 1 | 仅保留精确 containment 的 29 模块 TMDB 移植包环 |
 | 跨层 DB 边界债务 | 0 | Application、Chain、API、Agent、Runtime、Workflow 到 DB 的受控债务均为零 |
 | Model/Oper 事务债务 | 0 | 自建 Session、自动事务装饰器、直接 commit/rollback 等基线均为零 |
diff --git a/tests/fixtures/architecture/dependency-baseline.json b/tests/fixtures/architecture/dependency-baseline.json
index 833538450..eb9841dae 100644
--- a/tests/fixtures/architecture/dependency-baseline.json
+++ b/tests/fixtures/architecture/dependency-baseline.json
@@ -1089,8 +1089,8 @@
       "runtime_only": true
     }
   },
-  "edge_count": 8121,
-  "edge_sha256": "2bd9e458b68d93d182b47c91af9afa1b1646b00b03d28a107d1ee9204f703e14",
+  "edge_count": 8127,
+  "edge_sha256": "b355003c1ca55cd75ed454e9fe986dcf37b37078e6583563b41038c62a05c57f",
   "edges": [
     "app -> app.foundation",
     "app -> app.foundation.environment",
@@ -3599,6 +3599,10 @@
     "app.application.subscription.mutation -> app.schemas",
     "app.application.subscription.mutation -> app.schemas.common",
     "app.application.subscription.mutation -> app.schemas.event",
+    "app.application.subscription.observability -> app.application",
+    "app.application.subscription.observability -> app.application.subscription",
+    "app.application.subscription.observability -> app.application.subscription.execution",
+    "app.application.subscription.observability -> app.application.subscription.sitebudget",
     "app.application.subscription.priority -> app.application",
     "app.application.subscription.priority -> app.application.subscription",
     "app.application.subscription.priority -> app.application.subscription.contract",
@@ -4655,6 +4659,7 @@
     "app.chain.subscribe.match -> app.application.subscription.contract",
     "app.chain.subscribe.match -> app.application.subscription.execution",
     "app.chain.subscribe.match -> app.application.subscription.facts",
+    "app.chain.subscribe.match -> app.application.subscription.observability",
     "app.chain.subscribe.match -> app.application.subscription.sitebudget",
     "app.chain.subscribe.match -> app.application.torrent",
     "app.chain.subscribe.match -> app.application.torrent.download",
@@ -4797,6 +4802,7 @@
     "app.chain.subscribe.search -> app.application.subscription",
     "app.chain.subscribe.search -> app.application.subscription.contract",
     "app.chain.subscribe.search -> app.application.subscription.execution",
+    "app.chain.subscribe.search -> app.application.subscription.observability",
     "app.chain.subscribe.search -> app.application.subscription.query",
     "app.chain.subscribe.search -> app.application.subscription.sitebudget",
     "app.chain.subscribe.search -> app.chain",
@@ -9214,7 +9220,7 @@
     "app.workflow.actions.transfer_file -> app.workflow",
     "app.workflow.actions.transfer_file -> app.workflow.actions"
   ],
-  "module_count": 967,
+  "module_count": 968,
   "modules": [
     "app",
     "app.adapters",
@@ -9526,6 +9532,7 @@
     "app.application.subscription.facts",
     "app.application.subscription.identity",
     "app.application.subscription.mutation",
+    "app.application.subscription.observability",
     "app.application.subscription.priority",
     "app.application.subscription.query",
     "app.application.subscription.search",
diff --git a/tests/fixtures/architecture/startup-performance-baseline.json b/tests/fixtures/architecture/startup-performance-baseline.json
index 703eb5501..b88e24580 100644
--- a/tests/fixtures/architecture/startup-performance-baseline.json
+++ b/tests/fixtures/architecture/startup-performance-baseline.json
@@ -6,7 +6,7 @@
   "repeat": 3,
   "targets": {
     "app.startup.lifecycle": {
-      "loaded_app_module_count": 534,
+      "loaded_app_module_count": 535,
       "max_ms": 1293.338,
       "median_ms": 1156.239,
       "min_ms": 1102.806,
@@ -17,7 +17,7 @@
       ]
     },
     "app.factory": {
-      "loaded_app_module_count": 546,
+      "loaded_app_module_count": 547,
       "max_ms": 1127.911,
       "median_ms": 1122.382,
       "min_ms": 1119.221,
@@ -28,7 +28,7 @@
       ]
     },
     "app.main": {
-      "loaded_app_module_count": 548,
+      "loaded_app_module_count": 549,
       "max_ms": 1188.652,
       "median_ms": 1183.509,
       "min_ms": 1174.522,