合并主分支最新改动

同步 master 的最新功能与修复
保留 AI 游戏创作客户端分支现有实现

# Conflicts:
#	docs/project-memory/shared-memory/decision-log.md
#	docs/project-memory/shared-memory/pitfalls.md
#	scripts/dev.mjs
#	server-rs/crates/api-server/src/editor_screen_background_decision.rs
#	server-rs/crates/api-server/src/modules/admin.rs
#	src/components/rpg-entry/RpgEntryHomeView.tsx

src/components/rpg-entry/useRpgEntryBootstrap.ts

@@ -61,6 +61,7 @@ export function useRpgEntryBootstrap(
   const platformTabBootstrapUserIdRef = useRef<string | null | undefined>(
     undefined,
   );
+  const hasCompletedPlatformBootstrapRef = useRef(false);
   const hasExplicitPlatformTabSelectionRef = useRef(false);
 
   const [savedCustomWorldEntries, setSavedCustomWorldEntries] = useState<
@@ -234,12 +235,16 @@ export function useRpgEntryBootstrap(
     }
 
     void (async () => {
+      const shouldShowBlockingLoading =
+        !hasCompletedPlatformBootstrapRef.current;
       setHistoryEntries([]);
       setHistoryError(null);
       setSaveError(null);
-      setIsLoadingPlatform(true);
+      setIsLoadingPlatform(shouldShowBlockingLoading);
       setPlatformError(null);
-      setIsLoadingDashboard(canReadProtectedData);
+      setIsLoadingDashboard(
+        canReadProtectedData && shouldShowBlockingLoading,
+      );
       setDashboardError(null);
       if (!canReadProtectedData) {
         setSavedCustomWorldEntries([]);
@@ -358,6 +363,7 @@ export function useRpgEntryBootstrap(
         }
       } finally {
         if (isActive) {
+          hasCompletedPlatformBootstrapRef.current = true;
           setIsLoadingPlatform(false);
           setIsLoadingDashboard(false);
         }