feat: 新增工作室展示开关 VITE_STUDIO_ENABLED

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend-web/src/components/workspace/workspace-nav-chat-list.tsx

@@ -19,6 +19,9 @@ import { BotIcon, BrainIcon, ListChecks, MessageSquarePlus, MessagesSquare, PenL
 import { SidebarCollapseButton } from "./workspace-header";
 import { WorkspaceNavStudio } from "./workspace-nav-studio";
 import { cn } from "@/lib/utils";
+import { env } from "@/env";
+
+const studioEnabled = env.STUDIO_ENABLED?.toLowerCase() === "true";
 
 // 普通导航项：默认中性色，激活态与「新对话」一致——主色浅底 + 主色文字/图标
 const NAV_ITEM_CLASS =
@@ -165,7 +168,7 @@ export function WorkspaceNavChatList({
         )}
       </SidebarMenu>
     </SidebarGroup>
-    {!showCollapseTrigger && <WorkspaceNavStudio />}
+    {!showCollapseTrigger && studioEnabled && <WorkspaceNavStudio />}
     </>
   );
 }

frontend-web/src/env.ts

@@ -8,7 +8,8 @@ function readEnv(
     | "VITE_NOTE_API_BASE_URL"
     | "VITE_NOTEBOOK_API_BASE_URL"
     | "VITE_STATIC_WEBSITE_ONLY"
-    | "VITE_GITHUB_OAUTH_TOKEN",
+    | "VITE_GITHUB_OAUTH_TOKEN"
+    | "VITE_STUDIO_ENABLED",
 ): EnvValue {
   const value = import.meta.env[key];
   return typeof value === "string" && value.trim() ? value : undefined;
@@ -24,4 +25,5 @@ export const env = {
   NEXT_PUBLIC_NOTEBOOK_API_BASE_URL: readEnv("VITE_NOTEBOOK_API_BASE_URL"),
   NEXT_PUBLIC_STATIC_WEBSITE_ONLY: readEnv("VITE_STATIC_WEBSITE_ONLY"),
   GITHUB_OAUTH_TOKEN: readEnv("VITE_GITHUB_OAUTH_TOKEN"),
+  STUDIO_ENABLED: readEnv("VITE_STUDIO_ENABLED"),
 };