feat(web): redesign group ratio rules with collapsible grouped layout

Rewrite GroupGroupRatioRules and GroupSpecialUsableRules to group rules
by user group in collapsible sections instead of a flat table. Default
collapsed to reduce visual clutter when many rules exist. Fix i18n
translations for ja, zh-TW with proper native text; add missing keys.

web/src/pages/Setting/Ratio/components/GroupGroupRatioRules.jsx

 import React, { useState, useCallback, useMemo } from 'react';
 import {
   Button,
+  Collapsible,
+  Input,
   InputNumber,
   Select,
+  Tag,
   Typography,
   Popconfirm,
 } from '@douyinfe/semi-ui';
-import { IconPlus, IconDelete } from '@douyinfe/semi-icons';
+import {
+  IconPlus,
+  IconDelete,
+  IconChevronDown,
+  IconChevronUp,
+} from '@douyinfe/semi-icons';
 import { useTranslation } from 'react-i18next';
-import CardTable from '../../../../components/common/ui/CardTable';
 
 const { Text } = Typography;
 
@@ -57,14 +64,106 @@ export function serializeGroupGroupRatio(rules) {
     : JSON.stringify(nested, null, 2);
 }
 
+function GroupSection({ groupName, items, groupOptions, onUpdate, onRemove, onAdd, t }) {
+  const [open, setOpen] = useState(false);
+
+  return (
+    <div
+      style={{
+        border: '1px solid var(--semi-color-border)',
+        borderRadius: 8,
+        overflow: 'hidden',
+      }}
+    >
+      <div
+        className='flex items-center justify-between cursor-pointer'
+        style={{
+          padding: '8px 12px',
+          background: 'var(--semi-color-fill-0)',
+        }}
+        onClick={() => setOpen(!open)}
+      >
+        <div className='flex items-center gap-2'>
+          {open ? <IconChevronUp size='small' /> : <IconChevronDown size='small' />}
+          <Text strong>{groupName}</Text>
+          <Tag size='small' color='blue'>{items.length} {t('条规则')}</Tag>
+        </div>
+        <div className='flex items-center gap-1' onClick={(e) => e.stopPropagation()}>
+          <Button
+            icon={<IconPlus />}
+            size='small'
+            theme='borderless'
+            onClick={() => onAdd(groupName)}
+          />
+          <Popconfirm
+            title={t('确认删除该分组的所有规则？')}
+            onConfirm={() => items.forEach((item) => onRemove(item._id))}
+            position='left'
+          >
+            <Button
+              icon={<IconDelete />}
+              size='small'
+              type='danger'
+              theme='borderless'
+            />
+          </Popconfirm>
+        </div>
+      </div>
+      <Collapsible isOpen={open} keepDOM>
+        <div style={{ padding: '8px 12px' }}>
+          {items.map((rule) => (
+            <div
+              key={rule._id}
+              className='flex items-center gap-2'
+              style={{ marginBottom: 6 }}
+            >
+              <Select
+                size='small'
+                filter
+                value={rule.usingGroup || undefined}
+                placeholder={t('选择使用分组')}
+                optionList={groupOptions}
+                onChange={(v) => onUpdate(rule._id, 'usingGroup', v)}
+                style={{ flex: 1 }}
+                allowCreate
+                position='bottomLeft'
+              />
+              <InputNumber
+                size='small'
+                min={0}
+                step={0.1}
+                value={rule.ratio}
+                style={{ width: 100 }}
+                onChange={(v) => onUpdate(rule._id, 'ratio', v ?? 0)}
+              />
+              <Popconfirm
+                title={t('确认删除该规则？')}
+                onConfirm={() => onRemove(rule._id)}
+                position='left'
+              >
+                <Button
+                  icon={<IconDelete />}
+                  type='danger'
+                  theme='borderless'
+                  size='small'
+                />
+              </Popconfirm>
+            </div>
+          ))}
+        </div>
+      </Collapsible>
+    </div>
+  );
+}
+
 export default function GroupGroupRatioRules({
   value,
   groupNames = [],
   onChange,
 }) {
   const { t } = useTranslation();
-
   const [rules, setRules] = useState(() => flattenRules(parseJSON(value)));
+  const [newGroupName, setNewGroupName] = useState('');
 
   const emitChange = useCallback(
     (newRules) => {
@@ -76,21 +175,11 @@ export default function GroupGroupRatioRules({
 
   const updateRule = useCallback(
     (id, field, val) => {
-      const next = rules.map((r) =>
-        r._id === id ? { ...r, [field]: val } : r,
-      );
-      emitChange(next);
+      emitChange(rules.map((r) => (r._id === id ? { ...r, [field]: val } : r)));
     },
     [rules, emitChange],
   );
 
-  const addRule = useCallback(() => {
-    emitChange([
-      ...rules,
-      { _id: uid(), userGroup: '', usingGroup: '', ratio: 1 },
-    ]);
-  }, [rules, emitChange]);
-
   const removeRule = useCallback(
     (id) => {
       emitChange(rules.filter((r) => r._id !== id));
@@ -98,107 +187,99 @@ export default function GroupGroupRatioRules({
     [rules, emitChange],
   );
 
+  const addRuleToGroup = useCallback(
+    (groupName) => {
+      emitChange([
+        ...rules,
+        { _id: uid(), userGroup: groupName, usingGroup: '', ratio: 1 },
+      ]);
+    },
+    [rules, emitChange],
+  );
+
+  const addNewGroup = useCallback(() => {
+    const name = newGroupName.trim();
+    if (!name) return;
+    emitChange([
+      ...rules,
+      { _id: uid(), userGroup: name, usingGroup: '', ratio: 1 },
+    ]);
+    setNewGroupName('');
+  }, [rules, emitChange, newGroupName]);
+
   const groupOptions = useMemo(
     () => groupNames.map((n) => ({ value: n, label: n })),
     [groupNames],
   );
 
-  const columns = useMemo(
-    () => [
-      {
-        title: t('用户分组'),
-        dataIndex: 'userGroup',
-        key: 'userGroup',
-        width: 200,
-        render: (_, record) => (
+  const grouped = useMemo(() => {
+    const map = {};
+    const order = [];
+    rules.forEach((r) => {
+      if (!r.userGroup) return;
+      if (!map[r.userGroup]) {
+        map[r.userGroup] = [];
+        order.push(r.userGroup);
+      }
+      map[r.userGroup].push(r);
+    });
+    return order.map((name) => ({ name, items: map[name] }));
+  }, [rules]);
+
+  if (grouped.length === 0 && rules.length === 0) {
+    return (
+      <div>
+        <Text type='tertiary' className='block text-center py-4'>
+          {t('暂无规则，点击下方按钮添加')}
+        </Text>
+        <div className='mt-2 flex justify-center gap-2'>
           <Select
             size='small'
             filter
-            value={record.userGroup || undefined}
-            placeholder={t('选择用户分组')}
-            optionList={groupOptions}
-            onChange={(v) => updateRule(record._id, 'userGroup', v)}
-            style={{ width: '100%' }}
             allowCreate
-            position='bottomLeft'
-          />
-        ),
-      },
-      {
-        title: t('使用分组'),
-        dataIndex: 'usingGroup',
-        key: 'usingGroup',
-        width: 200,
-        render: (_, record) => (
-          <Select
-            size='small'
-            filter
-            value={record.usingGroup || undefined}
-            placeholder={t('选择使用分组')}
+            placeholder={t('选择用户分组')}
             optionList={groupOptions}
-            onChange={(v) => updateRule(record._id, 'usingGroup', v)}
-            style={{ width: '100%' }}
-            allowCreate
+            value={newGroupName || undefined}
+            onChange={setNewGroupName}
+            style={{ width: 200 }}
             position='bottomLeft'
           />
-        ),
-      },
-      {
-        title: t('倍率'),
-        dataIndex: 'ratio',
-        key: 'ratio',
-        width: 140,
-        render: (_, record) => (
-          <InputNumber
-            size='small'
-            min={0}
-            step={0.1}
-            value={record.ratio}
-            style={{ width: '100%' }}
-            onChange={(v) => updateRule(record._id, 'ratio', v ?? 0)}
-          />
-        ),
-      },
-      {
-        title: '',
-        key: 'actions',
-        width: 50,
-        render: (_, record) => (
-          <Popconfirm
-            title={t('确认删除该规则？')}
-            onConfirm={() => removeRule(record._id)}
-            position='left'
-          >
-            <Button
-              icon={<IconDelete />}
-              type='danger'
-              theme='borderless'
-              size='small'
-            />
-          </Popconfirm>
-        ),
-      },
-    ],
-    [t, groupOptions, updateRule, removeRule],
-  );
+          <Button icon={<IconPlus />} theme='outline' onClick={addNewGroup}>
+            {t('添加分组规则')}
+          </Button>
+        </div>
+      </div>
+    );
+  }
 
   return (
-    <div>
-      <CardTable
-        columns={columns}
-        dataSource={rules}
-        rowKey='_id'
-        hidePagination
-        size='small'
-        empty={
-          <Text type='tertiary'>
-            {t('暂无规则，点击下方按钮添加')}
-          </Text>
-        }
-      />
-      <div className='mt-3 flex justify-center'>
-        <Button icon={<IconPlus />} theme='outline' onClick={addRule}>
-          {t('添加规则')}
+    <div className='space-y-2'>
+      {grouped.map((group) => (
+        <GroupSection
+          key={group.name}
+          groupName={group.name}
+          items={group.items}
+          groupOptions={groupOptions}
+          onUpdate={updateRule}
+          onRemove={removeRule}
+          onAdd={addRuleToGroup}
+          t={t}
+        />
+      ))}
+      <div className='mt-3 flex justify-center gap-2'>
+        <Select
+          size='small'
+          filter
+          allowCreate
+          placeholder={t('选择用户分组')}
+          optionList={groupOptions}
+          value={newGroupName || undefined}
+          onChange={setNewGroupName}
+          style={{ width: 200 }}
+          position='bottomLeft'
+        />
+        <Button icon={<IconPlus />} theme='outline' onClick={addNewGroup}>
+          {t('添加分组规则')}
         </Button>
       </div>
     </div>