feat: remove Canvas inspiration entry

src/components/layout/ImageWorkspaceSidebar.tsx

@@ -1,7 +1,6 @@
 import { useEffect, useMemo, useState } from 'react';
 import {
   FolderKanban,
-  Lightbulb,
   Loader2,
   Pencil,
   Plus,
@@ -157,15 +156,6 @@ export function ImageWorkspaceSidebar({ sidebarCollapsed }: ImageWorkspaceSideba
         >
           <Plus className="h-4 w-4" />
         </Button>
-        <Button
-          type="button"
-          variant="ghost"
-          size="icon"
-          aria-label="获取设计灵感"
-          onClick={() => navigate('/image-prompts')}
-        >
-          <Lightbulb className="h-4 w-4" />
-        </Button>
       </div>
     );
   }
@@ -181,14 +171,6 @@ export function ImageWorkspaceSidebar({ sidebarCollapsed }: ImageWorkspaceSideba
           <Plus className="h-4 w-4 text-brand" />
           新建设计项目
         </button>
-        <button
-          type="button"
-          className="motion-press flex min-h-9 w-full items-center gap-2 rounded-xl px-2.5 text-left text-sm text-muted-foreground transition-colors hover:bg-surface-subtle hover:text-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/30"
-          onClick={() => navigate('/image-prompts')}
-        >
-          <Lightbulb className="h-4 w-4" />
-          获取灵感
-        </button>
       </div>
 
       <div className="mb-2 mt-5 flex items-center justify-between px-2">