chore(routes): close Shanghai mission and unify code channel

routing/code-channel-canonical-map.json

@@ -1,7 +1,7 @@
 {
   "schema": "guanghu.code-channel-canonical-map/v1",
   "map_id": "GH-CODE-CHANNEL-001",
-  "version": "2026-08-03.1",
+  "version": "2026-08-03.2",
   "state": "CURRENT_CANONICAL",
   "web_root": "https://guanghulab.com/code/",
   "api_root": "https://guanghulab.com/code/api/v1",
@@ -27,6 +27,20 @@
       "lease_resource": "repo://guanghulab.com/code/bingshuo/hololake-system-architecture#main",
       "default_branch": "main",
       "push_allowed": true
+    },
+    {
+      "code": "REPO-015",
+      "slug": "grok-build-upstream-mirror",
+      "role": "external_upstream_source_learning_and_purification_mirror",
+      "web_url": "https://guanghulab.com/code/bingshuo/grok-build-upstream-mirror",
+      "clone_url": "https://guanghulab.com/code/bingshuo/grok-build-upstream-mirror.git",
+      "lease_resource": "repo://guanghulab.com/code/bingshuo/grok-build-upstream-mirror#main",
+      "default_branch": "main",
+      "push_allowed": true,
+      "runtime_trusted": false,
+      "deployment_allowed": false,
+      "upstream": "https://github.com/xai-org/grok-build",
+      "boundary": "只保存上游源码、许可证、固定提交与净化研究；不得作为光湖运行时、人格系统或服务器部署来源。"
     }
   ],
   "local_mapping_policy": {
@@ -47,4 +61,3 @@
   },
   "proof_rule": "本映射证明当前路由规范；实际发布仍须取得分支单写租约、通过授权门，并独立回读远端完整提交 SHA。"
 }
-