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/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -15738,7 +15738,7 @@ export function PlatformEntryFlowShellImpl({
             initial={{ opacity: 0, y: 12 }}
             animate={{ opacity: 1, y: 0 }}
             exit={{ opacity: 0, y: -12 }}
-            className="creation-home-stage flex h-full min-h-0 min-w-0 flex-col overflow-hidden"
+            className="creation-home-stage creation-home-stage--landing flex h-full min-h-0 min-w-0 flex-col overflow-hidden"
           >
             {platformHomeView}
           </motion.div>