回滚误入 master 的游戏分发 WIP（夹带在 OSS v1 签名提交里）

- 撤销 39aed2e48 夹带的游戏分发前后端、SpacetimeDB 绑定、主站路由、后台审核页、文档与 nginx 改动，master 恢复可编译状态
- 保留该提交自身的 AGC 发号改动：agc-global-version.mjs 与其参数构造单测
- 恢复被误删的 output 产物，避免把无关清理混进该提交
- 补回两篇技术文档在 docs/README.md 的索引（它们属于后续两个补提交文档，不属于游戏分发）
- 游戏分发完整实现保留在 codex/game-distribution 分支继续开发

deploy/container/nginx.conf

@@ -140,7 +140,7 @@ http {
             try_files /index.html =404;
         }
 
-        location ~* "^/(?:components|creation|design-system|editor/canvas|games|games/detail|games/mine|games/play|games/publish|profile|project)/?$" {
+        location ~* "^/(?:creation|editor/canvas|profile|project)/?$" {
             try_files $uri /index.html =404;
         }
         # END GENARRATIVE MAIN SPA ROUTES

deploy/nginx/genarrative-dev-http.conf

@@ -189,7 +189,7 @@ server {
         try_files /index.html =404;
     }
 
-    location ~* "^/(?:components|creation|design-system|editor/canvas|games|games/detail|games/mine|games/play|games/publish|profile|project)/?$" {
+    location ~* "^/(?:creation|editor/canvas|profile|project)/?$" {
         error_page 503 /maintenance.html;
 
         if ($genarrative_maintenance) {

deploy/nginx/genarrative.conf

@@ -209,7 +209,7 @@ server {
         try_files /index.html =404;
     }
 
-    location ~* "^/(?:components|creation|design-system|editor/canvas|games|games/detail|games/mine|games/play|games/publish|profile|project)/?$" {
+    location ~* "^/(?:creation|editor/canvas|profile|project)/?$" {
         error_page 503 /maintenance.html;
 
         if ($genarrative_maintenance) {