feat: 系统优化和功能完善

主要更新：
- 调整并发配置为50人（数据库连接池30，Tomcat线程150，异步线程池5/20）
- 实现无界阻塞队列（LinkedBlockingQueue）任务处理
- 实现分镜视频保存功能（保存到uploads目录）
- 统一管理页面导航栏和右上角样式
- 添加日活用户统计功能
- 优化视频拼接和保存逻辑
- 添加部署文档和快速部署指南
- 更新.gitignore排除敏感配置文件

demo/frontend/src/router/index.js

@@ -12,7 +12,6 @@ const OrderCreate = () => import('@/views/OrderCreate.vue')
 const Payments = () => import('@/views/Payments.vue')
 const PaymentCreate = () => import('@/views/PaymentCreate.vue')
 const AdminOrders = () => import('@/views/AdminOrders.vue')
-const AdminUsers = () => import('@/views/AdminUsers.vue')
 const AdminDashboard = () => import('@/views/AdminDashboard.vue')
 const Dashboard = () => import('@/views/Dashboard.vue')
 const Welcome = () => import('@/views/Welcome.vue')
@@ -24,6 +23,7 @@ const TextToVideo = () => import('@/views/TextToVideo.vue')
 const TextToVideoCreate = () => import('@/views/TextToVideoCreate.vue')
 const ImageToVideo = () => import('@/views/ImageToVideo.vue')
 const ImageToVideoCreate = () => import('@/views/ImageToVideoCreate.vue')
+const ImageToVideoDetail = () => import('@/views/ImageToVideoDetail.vue')
 const StoryboardVideo = () => import('@/views/StoryboardVideo.vue')
 const StoryboardVideoCreate = () => import('@/views/StoryboardVideoCreate.vue')
 const MemberManagement = () => import('@/views/MemberManagement.vue')
@@ -75,6 +75,12 @@ const routes = [
     component: ImageToVideoCreate,
     meta: { title: '图生视频创作', requiresAuth: true }
   },
+  {
+    path: '/image-to-video/detail/:taskId',
+    name: 'ImageToVideoDetail',
+    component: ImageToVideoDetail,
+    meta: { title: '图生视频详情', requiresAuth: true }
+  },
   {
     path: '/storyboard-video',
     name: 'StoryboardVideo',
@@ -164,12 +170,6 @@ const routes = [
     component: AdminOrders,
     meta: { title: '订单管理', requiresAuth: true, requiresAdmin: true }
   },
-  {
-    path: '/admin/users',
-    name: 'AdminUsers',
-    component: AdminUsers,
-    meta: { title: '用户管理', requiresAuth: true, requiresAdmin: true }
-  },
   {
     path: '/admin/dashboard',
     name: 'AdminDashboard',