优化: 溢出修复与视觉token收敛+三处小清理

- diff长行折行可读/任务描述与产出宽表格横滚/确认弹窗长路径折行
- 滚动条色抽token浅色主题可见/阶段徽章与优先级色对齐语义token
- git状态色与错误色替换散落硬编码
- alert残留换toast走i18n/分离窗口缺参数补错误态/dev路由生产守卫

src/router/index.ts

@@ -65,12 +65,15 @@ const routes = [
     component: () => import('../views/AuditLog.vue'),
     meta: { title: '审批历史' },
   },
-  {
-    path: '/dev/x6',
-    name: 'X6Demo',
-    component: () => import('../components/dev/X6Demo.vue'),
-    meta: { title: 'X6 v3 验证' },
-  },
+  // X6 v3 验证 demo:仅开发环境注册,生产构建不含该路由
+  ...(import.meta.env.DEV
+    ? [{
+        path: '/dev/x6',
+        name: 'X6Demo',
+        component: () => import('../components/dev/X6Demo.vue'),
+        meta: { title: 'X6 v3 验证' },
+      }]
+    : []),
   {
     path: '/settings',
     name: 'Settings',