chore(architecture): refresh subscription dependency baseline

docs/architecture-overview.md

@@ -755,7 +755,7 @@ flowchart LR
 | 指标 | 当前值 |
 |---|---:|
 | Python 模块 | 972 |
-| 内部导入边 | 8,206 |
+| 内部导入边 | 8,208 |
 | 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） |

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 | 972 / 8,206 | `dependency-baseline.json` 当前快照 |
+| 宿主 Python 模块 / 内部依赖边 | 972 / 8,208 | `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 |

tests/fixtures/architecture/dependency-baseline.json

@@ -1089,8 +1089,8 @@
       "runtime_only": true
     }
   },
-  "edge_count": 8206,
-  "edge_sha256": "c1bac8193a102557080e2ff07d49b8c7f4e34ad09831ffee1ac2d0cce5b89463",
+  "edge_count": 8208,
+  "edge_sha256": "1a7eee327467c99451ce338d7d2670b74c2e71aeefcf36ac27b6668cb30a71aa",
   "edges": [
     "app -> app.foundation",
     "app -> app.foundation.environment",
@@ -2728,6 +2728,7 @@
     "app.api.endpoints.submaintenance -> app.application.subscription.search",
     "app.api.endpoints.submaintenance -> app.schemas",
     "app.api.endpoints.submaintenance -> app.schemas.response",
+    "app.api.endpoints.submaintenance -> app.schemas.subscribe",
     "app.api.endpoints.subscribe -> app.adapters",
     "app.api.endpoints.subscribe -> app.adapters.external",
     "app.api.endpoints.subscribe -> app.adapters.external.server",
@@ -4778,6 +4779,7 @@
     "app.chain.subscribe.notify -> app.domain.meta",
     "app.chain.subscribe.notify -> app.domain.meta.metabase",
     "app.chain.subscribe.notify -> app.runtime",
+    "app.chain.subscribe.notify -> app.runtime.execution",
     "app.chain.subscribe.notify -> app.runtime.log",
     "app.chain.subscribe.notify -> app.schemas",
     "app.chain.subscribe.notify -> app.schemas.common",