feat: add plugin marketplace renderer

src/components/layout/MainLayout.tsx

@@ -39,6 +39,8 @@ export function MainLayout() {
   const isChatWorkspace = location.pathname === '/chat';
   const isInitializationSafeRoute = location.pathname === '/project-config'
     || location.pathname === '/project-plugins'
+    || location.pathname === '/plugin-marketplace'
+    || location.pathname === '/my-plugins'
     || !isProgrammingModule;
 
   const handleSidebarPeekChange = useCallback((open: boolean, source: SidebarPeekSource) => {

src/components/layout/Sidebar.tsx

@@ -13,6 +13,8 @@ import {
   LogOut,
   Plus,
   Puzzle,
+  Library,
+  Store,
   Settings as SettingsIcon,
   UserCircle2,
 } from 'lucide-react';
@@ -586,6 +588,38 @@ export function Sidebar({ workspaceLayout = false, sidebarPeekOpen = false, onSi
           <Plus className="h-4 w-4 shrink-0 text-brand" />
           {!sidebarCollapsed && '新建项目'}
         </button>
+        <div className="mt-3 grid gap-1">
+          <button
+            type="button"
+            data-testid="sidebar-nav-plugin-marketplace"
+            aria-current={location.pathname === '/plugin-marketplace' ? 'page' : undefined}
+            aria-label="插件中心"
+            onClick={() => navigate('/plugin-marketplace')}
+            className={cn(
+              'motion-press flex min-h-10 w-full items-center gap-2 rounded-lg px-2 py-2 text-left text-sm font-medium transition-colors duration-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/35',
+              location.pathname === '/plugin-marketplace' ? 'bg-brand-selected text-foreground' : 'text-foreground hover:bg-surface-subtle',
+              sidebarCollapsed && 'justify-center px-0',
+            )}
+          >
+            <Store className="h-4 w-4 shrink-0 text-brand" />
+            {!sidebarCollapsed ? <span>插件中心</span> : null}
+          </button>
+          <button
+            type="button"
+            data-testid="sidebar-nav-my-plugins"
+            aria-current={location.pathname === '/my-plugins' ? 'page' : undefined}
+            aria-label="我的插件"
+            onClick={() => navigate('/my-plugins')}
+            className={cn(
+              'motion-press flex min-h-10 w-full items-center gap-2 rounded-lg px-2 py-2 text-left text-sm font-medium transition-colors duration-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/35',
+              location.pathname === '/my-plugins' ? 'bg-brand-selected text-foreground' : 'text-foreground hover:bg-surface-subtle',
+              sidebarCollapsed && 'justify-center px-0',
+            )}
+          >
+            <Library className="h-4 w-4 shrink-0 text-brand" />
+            {!sidebarCollapsed ? <span>我的插件</span> : null}
+          </button>
+        </div>
         <div className="mt-3">
           <button
             type="button"