fix(web): fix PaletteOutlined icon import and apply theme config

- Replace non-existent PaletteOutlined with BgColorsOutlined
- Apply user's refined light/dark theme configuration with proper
  color tokens, component overrides, and design system consistency

apps/web/src/pages/Settings.tsx

@@ -1,4 +1,13 @@
 import { Tabs } from 'antd';
+import {
+  BookOutlined,
+  GlobalOutlined,
+  MenuOutlined,
+  NumberOutlined,
+  SettingOutlined,
+  BgColorsOutlined,
+  AuditOutlined,
+} from '@ant-design/icons';
 import DictionaryManager from './settings/DictionaryManager';
 import LanguageManager from './settings/LanguageManager';
 import MenuConfig from './settings/MenuConfig';
@@ -8,17 +17,93 @@ import ThemeSettings from './settings/ThemeSettings';
 import AuditLogViewer from './settings/AuditLogViewer';
 
 const Settings: React.FC = () => {
-  const items = [
-    { key: 'dictionaries', label: '数据字典', children: <DictionaryManager /> },
-    { key: 'languages', label: '语言管理', children: <LanguageManager /> },
-    { key: 'menus', label: '菜单配置', children: <MenuConfig /> },
-    { key: 'numbering', label: '编号规则', children: <NumberingRules /> },
-    { key: 'settings', label: '系统参数', children: <SystemSettings /> },
-    { key: 'theme', label: '主题设置', children: <ThemeSettings /> },
-    { key: 'audit-log', label: '审计日志', children: <AuditLogViewer /> },
-  ];
+  return (
+    <div>
+      <div className="erp-page-header" style={{ borderBottom: 'none', marginBottom: 0, paddingBottom: 8 }}>
+        <div>
+          <h4>系统设置</h4>
+          <div className="erp-page-subtitle">管理系统参数、字典、菜单、主题等配置</div>
+        </div>
+      </div>
 
-  return <Tabs defaultActiveKey="dictionaries" items={items} />;
+      <Tabs
+        defaultActiveKey="dictionaries"
+        style={{ marginTop: 8 }}
+        items={[
+          {
+            key: 'dictionaries',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <BookOutlined style={{ fontSize: 14 }} />
+                数据字典
+              </span>
+            ),
+            children: <DictionaryManager />,
+          },
+          {
+            key: 'languages',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <GlobalOutlined style={{ fontSize: 14 }} />
+                语言管理
+              </span>
+            ),
+            children: <LanguageManager />,
+          },
+          {
+            key: 'menus',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <MenuOutlined style={{ fontSize: 14 }} />
+                菜单配置
+              </span>
+            ),
+            children: <MenuConfig />,
+          },
+          {
+            key: 'numbering',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <NumberOutlined style={{ fontSize: 14 }} />
+                编号规则
+              </span>
+            ),
+            children: <NumberingRules />,
+          },
+          {
+            key: 'settings',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <SettingOutlined style={{ fontSize: 14 }} />
+                系统参数
+              </span>
+            ),
+            children: <SystemSettings />,
+          },
+          {
+            key: 'theme',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <BgColorsOutlined style={{ fontSize: 14 }} />
+                主题设置
+              </span>
+            ),
+            children: <ThemeSettings />,
+          },
+          {
+            key: 'audit-log',
+            label: (
+              <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                <AuditOutlined style={{ fontSize: 14 }} />
+                审计日志
+              </span>
+            ),
+            children: <AuditLogViewer />,
+          },
+        ]}
+      />
+    </div>
+  );
 };
 
 export default Settings;