refactor(studio): 文案“我的笔记/笔记本”统一改为“我的空间”

涉及空间详情页、AI 写作表单/上下文/类型、researcher 注释及 env 注释。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend-web/src/pages/StudioNotebookDetailPage.tsx

@@ -83,10 +83,10 @@ function SourceCard({
         onToggle(item.id);
       }}
       className={`group relative flex h-32 w-full flex-col justify-between rounded-2xl p-4 ring-1 transition-colors ${isFailed
-          ? "cursor-default bg-destructive/5 ring-destructive/40"
-          : selected
-            ? "cursor-pointer bg-primary/10 ring-primary"
-            : "cursor-pointer bg-muted ring-border/50 hover:bg-muted/70"
+        ? "cursor-default bg-destructive/5 ring-destructive/40"
+        : selected
+          ? "cursor-pointer bg-primary/10 ring-primary"
+          : "cursor-pointer bg-muted ring-border/50 hover:bg-muted/70"
         }`}
     >
       {/* 删除按钮 - 右上角始终显示，悬停时高亮 */}
@@ -502,7 +502,7 @@ export default function StudioNotebookDetailPage() {
                     className="flex items-center gap-1.5 rounded-full bg-muted px-3 py-1 text-xs text-muted-foreground transition-colors hover:bg-muted/70"
                   >
                     <BookOpen className="size-3" />
-                    <span>我的笔记</span>
+                    <span>我的空间</span>
                   </a>
                   <button
                     onClick={() => setSourcesOpen(true)}
@@ -526,7 +526,7 @@ export default function StudioNotebookDetailPage() {
                   className="absolute right-6 top-4 z-10 flex items-center gap-1.5 rounded-full bg-muted/70 px-3 py-1.5 text-xs text-muted-foreground backdrop-blur transition-colors hover:bg-muted"
                 >
                   <BookOpen className="size-3.5" />
-                  <span>我的笔记</span>
+                  <span>我的空间</span>
                 </a>
 
                 {/* 垂直居中主区域：图标 → 标题 → 来源 → 输入框 → 空状态/历史 */}