feat(material): 去Tab分段展示 + 总图段位标签带 + 跟踪表段列 / 移除看板与产能分析

- 移除 Tab 切换，5 段（入口/酸洗/清洗/烘干/出口）顺序堆叠
- 总图 SVG 顶部加段位色带（5 段不同色），同时跟踪表新增「段」列
- 修复横向溢出（minmax(0,1fr) + auto-fit 槽卡片 + overflow-x:hidden）
- 删除菜单与路由中的「生产看板」「产能分析」，首页重定向到 /plan

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/router/index.js

@@ -14,14 +14,8 @@ const routes = [
     path: '/',
     component: () => import('@/views/Layout.vue'),
     meta: { requiresAuth: true },
-    redirect: '/dashboard',
+    redirect: '/plan',
     children: [
-      {
-        path: 'dashboard',
-        name: 'Dashboard',
-        component: () => import('@/views/Dashboard.vue'),
-        meta: { title: '生产看板', icon: 'el-icon-monitor', requiresAuth: true }
-      },
       {
         path: 'material',
         name: 'Material',
@@ -70,12 +64,6 @@ const routes = [
         component: () => import('@/views/Quality.vue'),
         meta: { title: '质量管理', icon: 'el-icon-medal', requiresAuth: true }
       },
-      {
-        path: 'capacity',
-        name: 'Capacity',
-        component: () => import('@/views/Capacity.vue'),
-        meta: { title: '产能分析', icon: 'el-icon-s-data', requiresAuth: true }
-      },
     ]
   },
   { path: '*', redirect: '/' }