feat: add project plugin center

src/components/layout/MainLayout.tsx

@@ -37,7 +37,9 @@ export function MainLayout() {
   const isPaintingModule = activeModule === 'painting';
   const isPromptMuseum = location.pathname === '/image-prompts' || location.pathname.startsWith('/image-prompts/');
   const isChatWorkspace = location.pathname === '/chat';
-  const isInitializationSafeRoute = location.pathname === '/project-config' || !isProgrammingModule;
+  const isInitializationSafeRoute = location.pathname === '/project-config'
+    || location.pathname === '/project-plugins'
+    || !isProgrammingModule;
 
   const handleSidebarPeekChange = useCallback((open: boolean, source: SidebarPeekSource) => {
     if (!sidebarCollapsed) return;

src/components/layout/Sidebar.tsx

@@ -12,6 +12,7 @@ import {
   FolderKanban,
   LogOut,
   Plus,
+  Puzzle,
   Settings as SettingsIcon,
   UserCircle2,
 } from 'lucide-react';
@@ -653,6 +654,23 @@ export function Sidebar({ workspaceLayout = false, sidebarPeekOpen = false, onSi
             </DisclosureContent>
           ) : null}
         </div>
+        {activeProject ? (
+          <button
+            type="button"
+            data-testid="sidebar-nav-project-plugins"
+            aria-current={location.pathname === '/project-plugins' ? 'page' : undefined}
+            aria-label="项目插件"
+            onClick={() => navigate('/project-plugins')}
+            className={cn(
+              'motion-press mt-3 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 === '/project-plugins' ? 'bg-brand-selected text-foreground' : 'text-foreground hover:bg-surface-subtle',
+              sidebarCollapsed && 'justify-center px-0',
+            )}
+          >
+            <Puzzle className="h-4 w-4 shrink-0 text-brand" />
+            {!sidebarCollapsed ? <span>项目插件</span> : null}
+          </button>
+        ) : null}
           </>
         ) : isLearningModule ? (
           <LearningSidebar sidebarCollapsed={sidebarCollapsed} />