Merge pull request #1637 from touwaeriol/feat/websearch-notify-pricing

feat: web search emulation, balance/quota notify, account stats pricing, per-provider refund control, Stripe fix / Web 搜索模拟、余额配额通知、渠道统计计费、按服务商退款控制、Stripe 修复

frontend/src/types/payment.ts

@@ -89,6 +89,7 @@ export interface PaymentOrder {
   refund_requested_by?: number
   refund_request_reason?: string
   plan_id?: number
+  provider_instance_id?: string
 }
 
 // ==================== Plans & Channels ====================
@@ -138,6 +139,7 @@ export interface ProviderInstance {
   enabled: boolean
   payment_mode: string
   refund_enabled: boolean
+  allow_user_refund: boolean
   limits: string
   sort_order: number
 }

frontend/src/utils/__tests__/usageLoadQueue.spec.ts

+import { describe, expect, it } from 'vitest'
+import { enqueueUsageRequest } from '../usageLoadQueue'
+import type { Account } from '@/types'
+
+/** Helper to create a minimal Account with proxy info */
+function makeAccount(
+  platform: string,
+  type: string = 'oauth',
+  proxy?: { host: string; port: number; username?: string | null } | null
+): Account {
+  return {
+    id: Math.floor(Math.random() * 10000),
+    platform,
+    type,
+    name: 'test',
+    status: 'active',
+    proxy_id: proxy ? 1 : null,
+    proxy: proxy
+      ? { id: 1, name: 'p', protocol: 'http', host: proxy.host, port: proxy.port, username: proxy.username ?? null, status: 'active', created_at: '', updated_at: '' }
+      : undefined,
+    credentials: {},
+    created_at: '',
+    updated_at: ''
+  } as unknown as Account
+}
+
+describe('usageLoadQueue', () => {
+  // ─── Anthropic 账号：按代理出口排队 ───
+
+  it('Anthropic 同代理出口串行执行，间隔 >= 1s', async () => {
+    const timestamps: number[] = []
+    const makeFn = () => async () => {
+      timestamps.push(Date.now())
+      return 'ok'
+    }
+
+    const acc = makeAccount('anthropic', 'oauth', { host: '1.2.3.4', port: 8080, username: 'u1' })
+
+    const p1 = enqueueUsageRequest(acc, makeFn())
+    const p2 = enqueueUsageRequest(acc, makeFn())
+    const p3 = enqueueUsageRequest(acc, makeFn())
+
+    await Promise.all([p1, p2, p3])
+
+    expect(timestamps).toHaveLength(3)
+    expect(timestamps[1] - timestamps[0]).toBeGreaterThanOrEqual(950)
+    expect(timestamps[1] - timestamps[0]).toBeLessThan(2100)
+    expect(timestamps[2] - timestamps[1]).toBeGreaterThanOrEqual(950)
+    expect(timestamps[2] - timestamps[1]).toBeLessThan(2100)
+  })
+
+  it('Anthropic 不同代理出口并行执行', async () => {
+    const timestamps: Record<string, number> = {}
+    const makeTracked = (key: string) => async () => {
+      timestamps[key] = Date.now()
+      return key
+    }
+
+    const acc1 = makeAccount('anthropic', 'oauth', { host: '1.2.3.4', port: 8080, username: 'u1' })
+    const acc2 = makeAccount('anthropic', 'oauth', { host: '5.6.7.8', port: 3128, username: 'u2' })
+
+    const p1 = enqueueUsageRequest(acc1, makeTracked('proxy1'))
+    const p2 = enqueueUsageRequest(acc2, makeTracked('proxy2'))
+
+    await Promise.all([p1, p2])
+
+    const spread = Math.abs(timestamps['proxy1'] - timestamps['proxy2'])
+    expect(spread).toBeLessThan(50)
+  })
+
+  it('Anthropic 相同代理连接信息的不同账号归为同一队列', async () => {
+    const timestamps: number[] = []
+    const makeFn = () => async () => {
+      timestamps.push(Date.now())
+      return 'ok'
+    }
+
+    const acc1 = makeAccount('anthropic', 'oauth', { host: '10.0.0.1', port: 3128, username: 'admin' })
+    const acc2 = makeAccount('anthropic', 'setup-token', { host: '10.0.0.1', port: 3128, username: 'admin' })
+
+    const p1 = enqueueUsageRequest(acc1, makeFn())
+    const p2 = enqueueUsageRequest(acc2, makeFn())
+
+    await Promise.all([p1, p2])
+
+    expect(timestamps).toHaveLength(2)
+    expect(timestamps[1] - timestamps[0]).toBeGreaterThanOrEqual(950)
+  })
+
+  it('Anthropic 直连（无代理）的账号归为同一队列', async () => {
+    const order: number[] = []
+    const makeFn = (n: number) => async () => {
+      order.push(n)
+      return n
+    }
+
+    const acc1 = makeAccount('anthropic', 'oauth')
+    const acc2 = makeAccount('anthropic', 'setup-token')
+
+    const p1 = enqueueUsageRequest(acc1, makeFn(1))
+    const p2 = enqueueUsageRequest(acc2, makeFn(2))
+
+    await Promise.all([p1, p2])
+
+    expect(order).toEqual([1, 2])
+  })
+
+  it('Anthropic 请求失败时 reject，后续任务继续执行', async () => {
+    const results: string[] = []
+    const acc = makeAccount('anthropic', 'oauth', { host: '99.99.99.99', port: 1234 })
+
+    const p1 = enqueueUsageRequest(acc, async () => {
+      throw new Error('fail')
+    })
+    const p2 = enqueueUsageRequest(acc, async () => {
+      results.push('second')
+      return 'ok'
+    })
+
+    await expect(p1).rejects.toThrow('fail')
+    await p2
+    expect(results).toEqual(['second'])
+  })
+
+  // ─── 非 Anthropic 平台：直接执行，不排队 ───
+
+  it('非 Anthropic 平台直接执行，不排队', async () => {
+    const timestamps: number[] = []
+    const makeFn = () => async () => {
+      timestamps.push(Date.now())
+      return 'ok'
+    }
+
+    // 同一代理的 Gemini 账号 — 应当并行，不排队
+    const acc1 = makeAccount('gemini', 'oauth', { host: '1.2.3.4', port: 8080 })
+    const acc2 = makeAccount('gemini', 'oauth', { host: '1.2.3.4', port: 8080 })
+
+    const p1 = enqueueUsageRequest(acc1, makeFn())
+    const p2 = enqueueUsageRequest(acc2, makeFn())
+
+    await Promise.all([p1, p2])
+
+    expect(timestamps).toHaveLength(2)
+    // 并行执行，几乎同时完成
+    expect(Math.abs(timestamps[1] - timestamps[0])).toBeLessThan(50)
+  })
+
+  it('OpenAI 平台直接执行，不排队', async () => {
+    const timestamps: number[] = []
+    const makeFn = () => async () => {
+      timestamps.push(Date.now())
+      return 'ok'
+    }
+
+    const acc1 = makeAccount('openai', 'oauth', { host: '1.2.3.4', port: 8080 })
+    const acc2 = makeAccount('openai', 'oauth', { host: '1.2.3.4', port: 8080 })
+
+    const p1 = enqueueUsageRequest(acc1, makeFn())
+    const p2 = enqueueUsageRequest(acc2, makeFn())
+
+    await Promise.all([p1, p2])
+
+    expect(timestamps).toHaveLength(2)
+    expect(Math.abs(timestamps[1] - timestamps[0])).toBeLessThan(50)
+  })
+
+  // ─── Anthropic apikey 类型不排队 ───
+
+  it('Anthropic apikey 类型直接执行，不排队', async () => {
+    const timestamps: number[] = []
+    const makeFn = () => async () => {
+      timestamps.push(Date.now())
+      return 'ok'
+    }
+
+    const acc1 = makeAccount('anthropic', 'apikey', { host: '1.2.3.4', port: 8080 })
+    const acc2 = makeAccount('anthropic', 'apikey', { host: '1.2.3.4', port: 8080 })
+
+    const p1 = enqueueUsageRequest(acc1, makeFn())
+    const p2 = enqueueUsageRequest(acc2, makeFn())
+
+    await Promise.all([p1, p2])
+
+    expect(timestamps).toHaveLength(2)
+    expect(Math.abs(timestamps[1] - timestamps[0])).toBeLessThan(50)
+  })
+
+  // ─── 返回值透传 ───
+
+  it('返回值正确透传', async () => {
+    const acc = makeAccount('anthropic', 'oauth')
+    const result = await enqueueUsageRequest(acc, async () => {
+      return { usage: 42 }
+    })
+    expect(result).toEqual({ usage: 42 })
+  })
+
+  it('非 Anthropic 返回值正确透传', async () => {
+    const acc = makeAccount('gemini', 'oauth')
+    const result = await enqueueUsageRequest(acc, async () => {
+      return { quota: 100 }
+    })
+    expect(result).toEqual({ quota: 100 })
+  })
+})

frontend/src/utils/billingMode.ts

+export const BILLING_MODE_TOKEN = 'token'
+export const BILLING_MODE_PER_REQUEST = 'per_request'
+export const BILLING_MODE_IMAGE = 'image'
+
+export function getBillingModeLabel(mode: string | null | undefined, t: (key: string) => string): string {
+  switch (mode) {
+    case BILLING_MODE_PER_REQUEST: return t('admin.usage.billingModePerRequest')
+    case BILLING_MODE_IMAGE: return t('admin.usage.billingModeImage')
+    default: return t('admin.usage.billingModeToken')
+  }
+}
+
+export function getBillingModeBadgeClass(mode: string | null | undefined): string {
+  switch (mode) {
+    case BILLING_MODE_PER_REQUEST: return 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-300'
+    case BILLING_MODE_IMAGE: return 'bg-pink-100 text-pink-700 dark:bg-pink-900/30 dark:text-pink-300'
+    default: return 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-300'
+  }
+}

frontend/src/utils/usageLoadQueue.ts

+/**
+ * Usage request scheduler — throttles Anthropic API calls by proxy exit.
+ *
+ * Anthropic OAuth/setup-token accounts sharing the same proxy exit are placed
+ * into a serial queue with a random 1–2s delay between requests, preventing
+ * upstream 429 rate-limit errors.
+ *
+ * Proxy identity = host:port:username — two proxy records pointing to the
+ * same exit share a single queue. Accounts without a proxy go into a
+ * "direct" queue.
+ *
+ * All other platforms bypass the queue and execute immediately.
+ */
+
+import type { Account } from '@/types'
+
+const GROUP_DELAY_MIN_MS = 1000
+const GROUP_DELAY_MAX_MS = 2000
+
+type Task<T> = {
+  fn: () => Promise<T>
+  resolve: (value: T) => void
+  reject: (reason: unknown) => void
+}
+
+const queues = new Map<string, Task<unknown>[]>()
+const running = new Set<string>()
+
+/** Whether this account needs throttled queuing. */
+function needsThrottle(account: Account): boolean {
+  return (
+    account.platform === 'anthropic' &&
+    (account.type === 'oauth' || account.type === 'setup-token')
+  )
+}
+
+/** Build a queue key from proxy connection details. */
+function buildGroupKey(account: Account): string {
+  const proxy = account.proxy
+  const proxyIdentity = proxy
+    ? `${proxy.host}:${proxy.port}:${proxy.username || ''}`
+    : 'direct'
+  return `anthropic:${proxyIdentity}`
+}
+
+async function drain(groupKey: string) {
+  if (running.has(groupKey)) return
+  running.add(groupKey)
+
+  const queue = queues.get(groupKey)
+  while (queue && queue.length > 0) {
+    const task = queue.shift()!
+    try {
+      const result = await task.fn()
+      task.resolve(result)
+    } catch (err) {
+      task.reject(err)
+    }
+    if (queue.length > 0) {
+      const jitter = GROUP_DELAY_MIN_MS + Math.random() * (GROUP_DELAY_MAX_MS - GROUP_DELAY_MIN_MS)
+      await new Promise((r) => setTimeout(r, jitter))
+    }
+  }
+
+  running.delete(groupKey)
+  queues.delete(groupKey)
+}
+
+/**
+ * Schedule a usage fetch. Anthropic accounts are queued by proxy exit;
+ * all other platforms execute immediately.
+ */
+export function enqueueUsageRequest<T>(
+  account: Account,
+  fn: () => Promise<T>
+): Promise<T> {
+  // Non-Anthropic → fire immediately, no queuing
+  if (!needsThrottle(account)) {
+    return fn()
+  }
+
+  const key = buildGroupKey(account)
+
+  return new Promise<T>((resolve, reject) => {
+    let queue = queues.get(key)
+    if (!queue) {
+      queue = []
+      queues.set(key, queue)
+    }
+    queue.push({ fn, resolve, reject } as Task<unknown>)
+    drain(key)
+  })
+}

frontend/src/views/admin/AccountsView.vue

@@ -144,6 +144,7 @@
         <AccountBulkActionsBar :selected-ids="selIds" @delete="handleBulkDelete" @reset-status="handleBulkResetStatus" @refresh-token="handleBulkRefreshToken" @edit="showBulkEdit = true" @clear="clearSelection" @select-page="selectPage" @toggle-schedulable="handleBulkToggleSchedulable" />
         <div ref="accountTableRef" class="flex min-h-0 flex-1 flex-col overflow-hidden">
         <DataTable
+          ref="dataTableRef"
           :columns="cols"
           :data="accounts"
           :loading="loading"
@@ -153,6 +154,8 @@
           default-sort-key="name"
           default-sort-order="asc"
           :sort-storage-key="ACCOUNT_SORT_STORAGE_KEY"
+          :estimate-row-height="72"
+          :overscan="5"
         >
           <template #header-select>
             <input
@@ -164,7 +167,7 @@
             />
           </template>
           <template #cell-select="{ row }">
-            <input type="checkbox" :checked="selIds.includes(row.id)" @change="toggleSel(row.id)" class="rounded border-gray-300 text-primary-600 focus:ring-primary-500" />
+            <input type="checkbox" :checked="isSelected(row.id)" @change="toggleSel(row.id)" class="rounded border-gray-300 text-primary-600 focus:ring-primary-500" />
           </template>
           <template #cell-name="{ row, value }">
             <div class="flex flex-col">
@@ -197,7 +200,9 @@
             <AccountCapacityCell :account="row" />
           </template>
           <template #cell-status="{ row }">
-            <AccountStatusIndicator :account="row" @show-temp-unsched="handleShowTempUnsched" />
+            <div class="flex items-center gap-1.5">
+              <AccountStatusIndicator :account="row" @show-temp-unsched="handleShowTempUnsched" />
+            </div>
           </template>
           <template #cell-schedulable="{ row }">
             <button @click="handleToggleSchedulable(row)" :disabled="togglingSchedulable === row.id" class="relative inline-flex h-5 w-9 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 dark:focus:ring-offset-dark-800" :class="[row.schedulable ? 'bg-primary-500 hover:bg-primary-600' : 'bg-gray-200 hover:bg-gray-300 dark:bg-dark-600 dark:hover:bg-dark-500']" :title="row.schedulable ? t('admin.accounts.schedulableEnabled') : t('admin.accounts.schedulableDisabled')">
@@ -313,7 +318,7 @@ import { useAppStore } from '@/stores/app'
 import { useAuthStore } from '@/stores/auth'
 import { adminAPI } from '@/api/admin'
 import { useTableLoader } from '@/composables/useTableLoader'
-import { useSwipeSelect } from '@/composables/useSwipeSelect'
+import { useSwipeSelect, type SwipeSelectVirtualContext } from '@/composables/useSwipeSelect'
 import { useTableSelection } from '@/composables/useTableSelection'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import TablePageLayout from '@/components/layout/TablePageLayout.vue'
@@ -351,6 +356,7 @@ const authStore = useAuthStore()
 const proxies = ref<AccountProxy[]>([])
 const groups = ref<AdminGroup[]>([])
 const accountTableRef = ref<HTMLElement | null>(null)
+const dataTableRef = ref<InstanceType<typeof DataTable> | null>(null)
 const selPlatforms = computed<AccountPlatform[]>(() => {
   const platforms = new Set(
     accounts.value
@@ -650,17 +656,25 @@ const {
   clear: clearSelection,
   removeMany: removeSelectedAccounts,
   toggleVisible,
-  selectVisible: selectPage
+  selectVisible: selectPage,
+  batchUpdate
 } = useTableSelection<Account>({
   rows: accounts,
   getId: (account) => account.id
 })
 
+const swipeVirtualContext: SwipeSelectVirtualContext = {
+  getVirtualizer: () => dataTableRef.value?.virtualizer ?? null,
+  getSortedData: () => dataTableRef.value?.sortedData ?? accounts.value,
+  getRowId: (row: any) => row.id,
+}
+
 useSwipeSelect(accountTableRef, {
   isSelected,
   select,
-  deselect
-})
+  deselect,
+  batchUpdate
+}, swipeVirtualContext)
 
 const resetAutoRefreshCache = () => {
   autoRefreshETag.value = null

frontend/src/views/admin/ChannelsView.vue

@@ -166,8 +166,8 @@
             class="channel-tab group"
             :class="activeTab === section.platform ? 'channel-tab-active' : 'channel-tab-inactive'"
           >
-            <PlatformIcon :platform="section.platform" size="xs" :class="getPlatformTextColor(section.platform)" />
-            <span :class="getPlatformTextColor(section.platform)">{{ t('admin.groups.platforms.' + section.platform, section.platform) }}</span>
+            <PlatformIcon :platform="section.platform" size="xs" :class="platformTextClass(section.platform)" />
+            <span :class="platformTextClass(section.platform)">{{ t('admin.groups.platforms.' + section.platform, section.platform) }}</span>
           </button>
         </div>
 
@@ -246,11 +246,29 @@
                     class="h-3.5 w-3.5 rounded border-gray-300 text-primary-600 focus:ring-primary-500"
                     @change="togglePlatform(p)"
                   />
-                  <PlatformIcon :platform="p" size="xs" :class="getPlatformTextColor(p)" />
-                  <span :class="getPlatformTextColor(p)">{{ t('admin.groups.platforms.' + p, p) }}</span>
+                  <PlatformIcon :platform="p" size="xs" :class="platformTextClass(p)" />
+                  <span :class="platformTextClass(p)">{{ t('admin.groups.platforms.' + p, p) }}</span>
                 </label>
               </div>
             </div>
+
+            <!-- Apply Pricing to Account Stats (toggle only in basic settings) -->
+            <div class="border-t border-gray-200 pt-4 dark:border-dark-700">
+              <div class="flex items-center justify-between">
+                <div>
+                  <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.channels.form.applyPricingToAccountStats') }}
+                  </label>
+                  <p class="mt-0.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{ t('admin.channels.form.applyPricingToAccountStatsDesc') }}
+                  </p>
+                </div>
+                <Toggle
+                  :modelValue="form.apply_pricing_to_account_stats"
+                  @update:modelValue="form.apply_pricing_to_account_stats = $event"
+                />
+              </div>
+            </div>
           </div>
 
           <!-- Platform Tab Content -->
@@ -292,9 +310,9 @@
                       class="h-3 w-3 rounded border-gray-300 text-primary-600 focus:ring-primary-500"
                       @change="toggleGroupInSection(sIdx, group.id)"
                     />
-                    <span :class="['font-medium', getPlatformTextColor(group.platform)]">{{ group.name }}</span>
+                    <span :class="['font-medium', platformTextClass(group.platform)]">{{ group.name }}</span>
                     <span
-                      :class="['rounded-full px-1 py-0 text-[10px]', getRateBadgeClass(group.platform)]"
+                      :class="['rounded-full px-1 py-0 text-[10px]', platformBadgeLightClass(group.platform)]"
                     >{{ group.rate_multiplier }}x</span>
                     <span class="text-[10px] text-gray-400">{{ group.account_count || 0 }}</span>
                     <span
@@ -306,6 +324,21 @@
               </div>
             </div>
 
+            <!-- Web Search Emulation (Anthropic only, hidden when global disabled) -->
+            <div v-if="section.platform === 'anthropic' && webSearchGlobalEnabled" class="border-t border-gray-200 pt-3 dark:border-dark-600">
+              <div class="flex items-center justify-between">
+                <div>
+                  <label class="text-xs font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.channels.form.webSearchEmulation') }}
+                  </label>
+                  <p class="mt-0.5 text-[11px] text-red-500 dark:text-red-400">
+                    {{ t('admin.channels.form.webSearchEmulationHint') }}
+                  </p>
+                </div>
+                <Toggle v-model="section.web_search_emulation" />
+              </div>
+            </div>
+
             <!-- Model Mapping -->
             <div>
               <div class="mb-1 flex items-center justify-between">
@@ -330,7 +363,7 @@
                     :value="srcModel"
                     type="text"
                     class="input flex-1 text-xs"
-                    :class="getPlatformTextColor(section.platform)"
+                    :class="platformTextClass(section.platform)"
                     :placeholder="t('admin.channels.form.mappingSource', 'Source model')"
                     @change="renameMappingKey(sIdx, srcModel, ($event.target as HTMLInputElement).value)"
                   />
@@ -339,7 +372,7 @@
                     :value="section.model_mapping[srcModel]"
                     type="text"
                     class="input flex-1 text-xs"
-                    :class="getPlatformTextColor(section.platform)"
+                    :class="platformTextClass(section.platform)"
                     :placeholder="t('admin.channels.form.mappingTarget', 'Target model')"
                     @input="section.model_mapping[srcModel] = ($event.target as HTMLInputElement).value"
                   />
@@ -379,6 +412,138 @@
                 />
               </div>
             </div>
+
+            <!-- Account Stats Pricing Rules (per-platform, always visible) -->
+            <div class="mt-4 border-t border-gray-200 pt-4 dark:border-dark-700 space-y-3">
+              <div class="flex items-center justify-between">
+                <h4 class="text-sm font-medium text-gray-700 dark:text-gray-300">
+                  {{ t('admin.channels.form.accountStatsPricingRules') }}
+                </h4>
+                <button
+                  type="button"
+                  @click="addAccountStatsRule(sIdx)"
+                  class="rounded-lg border border-primary-300 px-3 py-1 text-xs font-medium text-primary-600 hover:bg-primary-50 dark:border-primary-600 dark:text-primary-400 dark:hover:bg-primary-900/20"
+                >
+                  + {{ t('admin.channels.form.addRule') }}
+                </button>
+              </div>
+
+              <!-- Filter rules for this platform's groups -->
+              <p
+                v-if="section.account_stats_pricing_rules.length === 0"
+                class="text-xs italic text-gray-400 dark:text-gray-500"
+              >
+                {{ t('admin.channels.form.noRulesConfigured') }}
+              </p>
+
+              <div
+                v-for="(rule, ruleIndex) in section.account_stats_pricing_rules"
+                :key="ruleIndex"
+                class="space-y-3 rounded-lg border border-gray-200 p-4 dark:border-dark-600"
+              >
+                <div class="flex items-center justify-between">
+                  <input
+                    v-model="rule.name"
+                    :placeholder="t('admin.channels.form.ruleName')"
+                    class="bg-transparent text-sm font-medium text-gray-700 placeholder-gray-400 outline-none dark:text-gray-300"
+                  />
+                  <button type="button" @click="removeAccountStatsRule(sIdx, ruleIndex)" class="text-xs text-red-500 hover:text-red-700">
+                    {{ t('common.delete') }}
+                  </button>
+                </div>
+
+                <div>
+                  <label class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.channels.form.ruleGroups') }}</label>
+                  <div class="mt-1 flex flex-wrap gap-1">
+                    <label
+                      v-for="gid in section.group_ids"
+                      :key="gid"
+                      class="inline-flex cursor-pointer items-center gap-1 rounded-md border px-2 py-1 text-xs transition-colors"
+                      :class="rule.group_ids.includes(gid)
+                        ? 'border-primary-300 bg-primary-50 dark:border-primary-700 dark:bg-primary-900/20'
+                        : 'border-gray-200 hover:bg-gray-50 dark:border-dark-600 dark:hover:bg-dark-700'"
+                    >
+                      <input type="checkbox" :checked="rule.group_ids.includes(gid)" class="h-3 w-3 rounded border-gray-300 text-primary-600 focus:ring-primary-500" @change="rule.group_ids.includes(gid) ? rule.group_ids.splice(rule.group_ids.indexOf(gid), 1) : rule.group_ids.push(gid)" />
+                      <span :class="['font-medium', platformTextClass(section.platform)]">{{ getGroupNameById(gid) }}</span>
+                    </label>
+                  </div>
+                  <p v-if="section.group_ids.length === 0" class="mt-1 text-xs text-gray-400">
+                    {{ t('admin.channels.form.noGroupsInChannel') }}
+                  </p>
+                </div>
+
+                <div>
+                  <label class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.channels.form.ruleAccounts') }}</label>
+                  <!-- Selected account chips -->
+                  <div class="mt-1 flex flex-wrap gap-1">
+                    <span
+                      v-for="accountId in rule.account_ids"
+                      :key="accountId"
+                      class="inline-flex items-center gap-1 rounded-md border border-primary-300 bg-primary-50 px-2 py-0.5 text-xs dark:border-primary-700 dark:bg-primary-900/20"
+                    >
+                      <span :class="['font-medium', platformTextClass(section.platform)]">{{ getRuleAccountLabel(accountId) }}</span>
+                      <button type="button" @click="removeRuleAccount(rule, accountId)" class="text-gray-400 hover:text-red-500">
+                        <Icon name="x" size="xs" />
+                      </button>
+                    </span>
+                  </div>
+                  <!-- Account search input -->
+                  <div class="relative mt-1 rule-account-search-container">
+                    <input
+                      v-model="ruleAccountSearchKeyword[`${section.platform}-${ruleIndex}`]"
+                      type="text"
+                      class="input text-sm"
+                      :placeholder="t('admin.channels.form.searchAccountPlaceholder')"
+                      @input="onRuleAccountSearchInput(section.platform, ruleIndex)"
+                      @focus="onRuleAccountSearchFocus(section.platform, ruleIndex)"
+                    />
+                    <!-- Search results dropdown -->
+                    <div
+                      v-if="showRuleAccountDropdown[`${section.platform}-${ruleIndex}`] && (ruleAccountSearchResults[`${section.platform}-${ruleIndex}`]?.length ?? 0) > 0"
+                      class="absolute z-50 mt-1 max-h-48 w-full overflow-auto rounded-lg border bg-white shadow-lg dark:border-dark-600 dark:bg-dark-800"
+                    >
+                      <button
+                        v-for="account in ruleAccountSearchResults[`${section.platform}-${ruleIndex}`]"
+                        :key="account.id"
+                        type="button"
+                        @click="selectRuleAccount(rule, account, section.platform, ruleIndex)"
+                        class="w-full px-3 py-2 text-left text-sm hover:bg-gray-100 dark:hover:bg-dark-700"
+                        :class="{ 'opacity-50': rule.account_ids.includes(account.id) }"
+                        :disabled="rule.account_ids.includes(account.id)"
+                      >
+                        <span :class="platformTextClass(account.platform)">{{ account.name }}</span>
+                        <span class="ml-2 text-xs text-gray-400">#{{ account.id }}</span>
+                      </button>
+                    </div>
+                  </div>
+                  <p class="mt-1 text-xs text-gray-400">
+                    {{ t('admin.channels.form.ruleAccountsHint') }}
+                  </p>
+                </div>
+
+                <div>
+                  <div class="mb-1 flex items-center justify-between">
+                    <label class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.channels.form.ruleModelPricing') }}</label>
+                    <button type="button" @click="addRulePricingEntry(sIdx, ruleIndex)" class="text-xs text-primary-600 hover:text-primary-700">
+                      + {{ t('common.add') }}
+                    </button>
+                  </div>
+                  <div v-if="rule.pricing.length === 0" class="rounded border border-dashed border-gray-300 p-2 text-center text-xs text-gray-400 dark:border-dark-500">
+                    {{ t('admin.channels.form.noPricingRules') }}
+                  </div>
+                  <div v-else class="space-y-2">
+                    <PricingEntryCard
+                      v-for="(entry, pIdx) in rule.pricing"
+                      :key="pIdx"
+                      :entry="entry"
+                      :platform="section.platform"
+                      @update="rule.pricing.splice(pIdx, 1, $event)"
+                      @remove="removeRulePricingEntry(sIdx, ruleIndex, pIdx)"
+                    />
+                  </div>
+                </div>
+              </div>
+            </div>
           </div>
         </form>
       </div>
@@ -423,12 +588,14 @@
 import { ref, reactive, computed, onMounted, onUnmounted } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
+import { extractApiErrorMessage } from '@/utils/apiError'
 import { adminAPI } from '@/api/admin'
-import type { Channel, ChannelModelPricing, CreateChannelRequest, UpdateChannelRequest } from '@/api/admin/channels'
+import type { Channel, ChannelModelPricing, CreateChannelRequest, UpdateChannelRequest, AccountStatsPricingRule } from '@/api/admin/channels'
 import type { PricingFormEntry } from '@/components/admin/channel/types'
 import { mTokToPerToken, perTokenToMTok, apiIntervalsToForm, formIntervalsToAPI, findModelConflict, validateIntervals } from '@/components/admin/channel/types'
 import type { AdminGroup, GroupPlatform } from '@/types'
 import type { Column } from '@/components/common/types'
+import { platformTextClass, platformBadgeLightClass } from '@/utils/platformColors'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import TablePageLayout from '@/components/layout/TablePageLayout.vue'
 import DataTable from '@/components/common/DataTable.vue'
@@ -442,10 +609,31 @@ import PlatformIcon from '@/components/common/PlatformIcon.vue'
 import Toggle from '@/components/common/Toggle.vue'
 import PricingEntryCard from '@/components/admin/channel/PricingEntryCard.vue'
 import { getPersistedPageSize } from '@/composables/usePersistedPageSize'
+import { useKeyedDebouncedSearch } from '@/composables/useKeyedDebouncedSearch'
 
 const { t } = useI18n()
 const appStore = useAppStore()
 
+// Web Search global enabled state (loaded once on mount)
+const webSearchGlobalEnabled = ref(false)
+async function loadWebSearchGlobalState() {
+  try {
+    const cfg = await adminAPI.settings.getWebSearchEmulationConfig()
+    webSearchGlobalEnabled.value = cfg?.enabled === true && (cfg?.providers?.length ?? 0) > 0
+  } catch (err: unknown) {
+    console.warn('Failed to load web search global state:', err)
+    webSearchGlobalEnabled.value = false
+  }
+}
+
+// ── Form-level pricing rule type (per-platform) ──
+interface FormPricingRule {
+  name: string
+  group_ids: number[]
+  account_ids: number[]
+  pricing: PricingFormEntry[]
+}
+
 // ── Platform Section type ──
 interface PlatformSection {
   platform: GroupPlatform
@@ -454,6 +642,8 @@ interface PlatformSection {
   group_ids: number[]
   model_mapping: Record<string, string>
   model_pricing: PricingFormEntry[]
+  web_search_emulation: boolean
+  account_stats_pricing_rules: FormPricingRule[]
 }
 
 // ── Table columns ──
@@ -521,7 +711,8 @@ const form = reactive({
   status: 'active',
   restrict_models: false,
   billing_model_source: 'channel_mapped' as string,
-  platforms: [] as PlatformSection[]
+  platforms: [] as PlatformSection[],
+  apply_pricing_to_account_stats: false,
 })
 
 let abortController: AbortController | null = null
@@ -529,26 +720,6 @@ let abortController: AbortController | null = null
 // ── Platform config ──
 const platformOrder: GroupPlatform[] = ['anthropic', 'openai', 'gemini', 'antigravity']
 
-function getPlatformTextColor(platform: string): string {
-  switch (platform) {
-    case 'anthropic': return 'text-orange-600 dark:text-orange-400'
-    case 'openai': return 'text-emerald-600 dark:text-emerald-400'
-    case 'gemini': return 'text-blue-600 dark:text-blue-400'
-    case 'antigravity': return 'text-purple-600 dark:text-purple-400'
-    default: return 'text-gray-600 dark:text-gray-400'
-  }
-}
-
-function getRateBadgeClass(platform: string): string {
-  switch (platform) {
-    case 'anthropic': return 'bg-orange-100 text-orange-700 dark:bg-orange-900/30 dark:text-orange-400'
-    case 'openai': return 'bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-400'
-    case 'gemini': return 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400'
-    case 'antigravity': return 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400'
-    default: return 'bg-gray-100 text-gray-700 dark:bg-gray-900/30 dark:text-gray-400'
-  }
-}
-
 // ── Helpers ──
 function formatDate(value: string): string {
   if (!value) return '-'
@@ -565,7 +736,9 @@ function addPlatformSection(platform: GroupPlatform) {
     collapsed: false,
     group_ids: [],
     model_mapping: {},
-    model_pricing: []
+    model_pricing: [],
+    web_search_emulation: false,
+    account_stats_pricing_rules: [],
   })
 }
 
@@ -678,11 +851,158 @@ function renameMappingKey(sectionIdx: number, oldKey: string, newKey: string) {
   mapping[newKey] = value
 }
 
+// ── Account Stats Pricing helpers ──
+function addAccountStatsRule(sectionIdx: number) {
+  form.platforms[sectionIdx].account_stats_pricing_rules.push({
+    name: '',
+    group_ids: [],
+    account_ids: [],
+    pricing: []
+  })
+}
+
+function addRulePricingEntry(sectionIdx: number, ruleIndex: number) {
+  form.platforms[sectionIdx].account_stats_pricing_rules[ruleIndex].pricing.push({
+    models: [],
+    billing_mode: 'token',
+    input_price: null,
+    output_price: null,
+    cache_write_price: null,
+    cache_read_price: null,
+    image_output_price: null,
+    per_request_price: null,
+    intervals: []
+  })
+}
+
+function removeAccountStatsRule(sectionIdx: number, ruleIndex: number) {
+  form.platforms[sectionIdx].account_stats_pricing_rules.splice(ruleIndex, 1)
+  // Clear all search state since indices shift after removal
+  ruleAccountSearchRunner.clearAll()
+  clearAllRuleAccountSearchState()
+}
+
+function removeRulePricingEntry(sectionIdx: number, ruleIndex: number, pricingIndex: number) {
+  form.platforms[sectionIdx].account_stats_pricing_rules[ruleIndex].pricing.splice(pricingIndex, 1)
+}
+
+function getGroupNameById(groupId: number): string {
+  const group = allGroups.value.find(g => g.id === groupId)
+  return group ? group.name : `#${groupId}`
+}
+
+// ── Account search for pricing rules ──
+interface SimpleAccount { id: number; name: string; platform: string }
+
+const ruleAccountSearchKeyword = ref<Record<string, string>>({})
+const ruleAccountSearchResults = ref<Record<string, SimpleAccount[]>>({})
+const showRuleAccountDropdown = ref<Record<string, boolean>>({})
+// Cache: account ID → name, populated when search results are selected
+const ruleAccountNameCache = ref<Record<number, string>>({})
+
+const ruleAccountSearchRunner = useKeyedDebouncedSearch<SimpleAccount[]>({
+  delay: 300,
+  search: async (keyword, { key, signal }) => {
+    const platform = key.split('-')[0]
+    const res = await adminAPI.accounts.list(1, 20, { platform, search: keyword }, { signal })
+    return res.items.map(a => ({ id: a.id, name: a.name, platform: a.platform }))
+  },
+  onSuccess: (key, result) => { ruleAccountSearchResults.value[key] = result },
+  onError: (key) => { ruleAccountSearchResults.value[key] = [] },
+})
+
+function onRuleAccountSearchInput(platform: string, ruleIndex: number) {
+  const key = `${platform}-${ruleIndex}`
+  showRuleAccountDropdown.value[key] = true
+  ruleAccountSearchRunner.trigger(key, ruleAccountSearchKeyword.value[key] || '')
+}
+
+function onRuleAccountSearchFocus(platform: string, ruleIndex: number) {
+  const key = `${platform}-${ruleIndex}`
+  showRuleAccountDropdown.value[key] = true
+  if (!ruleAccountSearchResults.value[key]?.length) {
+    ruleAccountSearchRunner.trigger(key, ruleAccountSearchKeyword.value[key] || '')
+  }
+}
+
+function selectRuleAccount(
+  rule: { account_ids: number[] },
+  account: SimpleAccount,
+  platform: string,
+  ruleIndex: number,
+) {
+  if (!rule.account_ids.includes(account.id)) {
+    rule.account_ids.push(account.id)
+    ruleAccountNameCache.value[account.id] = account.name
+  }
+  const key = `${platform}-${ruleIndex}`
+  ruleAccountSearchKeyword.value[key] = ''
+  showRuleAccountDropdown.value[key] = false
+}
+
+function removeRuleAccount(rule: { account_ids: number[] }, accountId: number) {
+  const idx = rule.account_ids.indexOf(accountId)
+  if (idx !== -1) rule.account_ids.splice(idx, 1)
+}
+
+function getRuleAccountLabel(accountId: number): string {
+  const name = ruleAccountNameCache.value[accountId]
+  return name ? `${name} #${accountId}` : `#${accountId}`
+}
+
+function handleRuleAccountClickOutside(event: MouseEvent) {
+  const target = event.target as HTMLElement
+  if (!target.closest('.rule-account-search-container')) {
+    Object.keys(showRuleAccountDropdown.value).forEach(key => {
+      showRuleAccountDropdown.value[key] = false
+    })
+  }
+}
+
+function clearAllRuleAccountSearchState() {
+  ruleAccountSearchKeyword.value = {}
+  ruleAccountSearchResults.value = {}
+  showRuleAccountDropdown.value = {}
+}
+
+function accountStatsRulesToAPI(): AccountStatsPricingRule[] {
+  const rules: AccountStatsPricingRule[] = []
+  for (const section of form.platforms) {
+    if (!section.enabled) continue
+    for (const rule of section.account_stats_pricing_rules) {
+      rules.push({
+        name: rule.name,
+        group_ids: rule.group_ids,
+        account_ids: rule.account_ids,
+        pricing: rule.pricing
+          .filter(p => p.models.length > 0)
+          .map(p => ({
+            platform: section.platform,
+            models: p.models,
+            billing_mode: p.billing_mode,
+            input_price: mTokToPerToken(p.input_price),
+            output_price: mTokToPerToken(p.output_price),
+            cache_write_price: mTokToPerToken(p.cache_write_price),
+            cache_read_price: mTokToPerToken(p.cache_read_price),
+            image_output_price: mTokToPerToken(p.image_output_price),
+            per_request_price: p.per_request_price != null && p.per_request_price !== '' ? Number(p.per_request_price) : null,
+            intervals: formIntervalsToAPI(p.intervals || [])
+          }))
+      })
+    }
+  }
+  return rules
+}
+
 // ── Form ↔ API conversion ──
-function formToAPI(): { group_ids: number[], model_pricing: ChannelModelPricing[], model_mapping: Record<string, Record<string, string>> } {
+function formToAPI(): { group_ids: number[], model_pricing: ChannelModelPricing[], model_mapping: Record<string, Record<string, string>>, features_config: Record<string, unknown> } {
   const group_ids: number[] = []
   const model_pricing: ChannelModelPricing[] = []
   const model_mapping: Record<string, Record<string, string>> = {}
+  // Preserve existing features_config fields not managed by the form
+  const featuresConfig: Record<string, unknown> = editingChannel.value?.features_config
+    ? { ...editingChannel.value.features_config }
+    : {}
 
   for (const section of form.platforms) {
     if (!section.enabled) continue
@@ -711,7 +1031,23 @@ function formToAPI(): { group_ids: number[], model_pricing: ChannelModelPricing[
     }
   }
 
-  return { group_ids, model_pricing, model_mapping }
+  // Collect web_search_emulation (only anthropic platform supports it)
+  // Always write the key so that disabling in the UI correctly sets platform to false,
+  // rather than leaving a stale true value from the cloned features_config.
+  const wsEmulation: Record<string, boolean> = {}
+  for (const section of form.platforms) {
+    if (!section.enabled) continue
+    if (section.platform === 'anthropic') {
+      wsEmulation[section.platform] = !!section.web_search_emulation
+    }
+  }
+  if (Object.keys(wsEmulation).length > 0) {
+    featuresConfig.web_search_emulation = wsEmulation
+  } else {
+    delete featuresConfig.web_search_emulation
+  }
+
+  return { group_ids, model_pricing, model_mapping, features_config: featuresConfig }
 }
 
 function apiToForm(channel: Channel): PlatformSection[] {
@@ -755,13 +1091,20 @@ function apiToForm(channel: Channel): PlatformSection[] {
         intervals: apiIntervalsToForm(p.intervals || [])
       } as PricingFormEntry))
 
+    // Read web_search_emulation from features_config
+    const fc = channel.features_config
+    const wsEmulation = fc?.web_search_emulation as Record<string, boolean> | undefined
+    const webSearchEnabled = wsEmulation?.[platform] === true
+
     sections.push({
       platform,
       enabled: true,
       collapsed: false,
       group_ids: groupIds,
       model_mapping: { ...mapping },
-      model_pricing: pricing
+      model_pricing: pricing,
+      web_search_emulation: webSearchEnabled,
+      account_stats_pricing_rules: [],
     })
   }
 
@@ -786,10 +1129,10 @@ async function loadChannels() {
     if (ctrl.signal.aborted || abortController !== ctrl) return
     channels.value = response.items || []
     pagination.total = response.total
-  } catch (error: any) {
-    if (error?.name === 'AbortError' || error?.code === 'ERR_CANCELED') return
-    appStore.showError(t('admin.channels.loadError', 'Failed to load channels'))
-    console.error('Error loading channels:', error)
+  } catch (error: unknown) {
+    const e = error as { name?: string; code?: string }
+    if (e?.name === 'AbortError' || e?.code === 'ERR_CANCELED') return
+    appStore.showError(extractApiErrorMessage(error, t('admin.channels.loadError', 'Failed to load channels')))
   } finally {
     if (abortController === ctrl) {
       loading.value = false
@@ -854,7 +1197,11 @@ function resetForm() {
   form.restrict_models = false
   form.billing_model_source = 'channel_mapped'
   form.platforms = []
+  form.apply_pricing_to_account_stats = false
   activeTab.value = 'basic'
+  ruleAccountSearchRunner.clearAll()
+  clearAllRuleAccountSearchState()
+  ruleAccountNameCache.value = {}
 }
 
 async function openCreateDialog() {
@@ -871,12 +1218,92 @@ async function openEditDialog(channel: Channel) {
   form.status = channel.status
   form.restrict_models = channel.restrict_models || false
   form.billing_model_source = channel.billing_model_source || 'channel_mapped'
+  form.apply_pricing_to_account_stats = channel.apply_pricing_to_account_stats || false
   // Must load groups first so apiToForm can map groupID → platform
   await Promise.all([loadGroups(), loadAllChannelsForConflict()])
   form.platforms = apiToForm(channel)
+
+  // Distribute channel-level rules into per-platform sections
+  distributeRulesToPlatforms(channel.account_stats_pricing_rules || [])
+
+  // Populate ruleAccountNameCache for existing rule accounts
+  await populateRuleAccountNameCache()
+
   showDialog.value = true
 }
 
+/** Distribute flat channel-level rules into the matching platform section based on group_ids */
+function distributeRulesToPlatforms(apiRules: AccountStatsPricingRule[]) {
+  // Build groupID → platform lookup
+  const groupPlatformMap = new Map<number, GroupPlatform>()
+  for (const g of allGroups.value) {
+    groupPlatformMap.set(g.id, g.platform)
+  }
+
+  for (const apiRule of apiRules) {
+    // Infer platform from group_ids
+    const platforms = new Set<GroupPlatform>()
+    for (const gid of apiRule.group_ids || []) {
+      const p = groupPlatformMap.get(gid)
+      if (p) platforms.add(p)
+    }
+    // If pricing has a platform field, use that as fallback
+    if (platforms.size === 0 && apiRule.pricing?.length > 0) {
+      const p = apiRule.pricing[0].platform as GroupPlatform | undefined
+      if (p) platforms.add(p)
+    }
+    const targetPlatform = platforms.size >= 1 ? [...platforms][0] : null
+    if (!targetPlatform) continue
+
+    const section = form.platforms.find(s => s.platform === targetPlatform)
+    if (!section) continue
+
+    const formRule: FormPricingRule = {
+      name: apiRule.name || '',
+      group_ids: [...(apiRule.group_ids || [])],
+      account_ids: [...(apiRule.account_ids || [])],
+      pricing: (apiRule.pricing || []).map(p => ({
+        models: [...(p.models || [])],
+        billing_mode: p.billing_mode,
+        input_price: perTokenToMTok(p.input_price),
+        output_price: perTokenToMTok(p.output_price),
+        cache_write_price: perTokenToMTok(p.cache_write_price),
+        cache_read_price: perTokenToMTok(p.cache_read_price),
+        image_output_price: perTokenToMTok(p.image_output_price),
+        per_request_price: p.per_request_price,
+        intervals: apiIntervalsToForm(p.intervals || [])
+      } as PricingFormEntry))
+    }
+    section.account_stats_pricing_rules.push(formRule)
+  }
+}
+
+/** Populate ruleAccountNameCache by fetching account details for all account_ids in rules */
+async function populateRuleAccountNameCache() {
+  const allAccountIds = new Set<number>()
+  for (const section of form.platforms) {
+    for (const rule of section.account_stats_pricing_rules) {
+      for (const id of rule.account_ids) {
+        allAccountIds.add(id)
+      }
+    }
+  }
+  if (allAccountIds.size === 0) return
+
+  // Fetch account details in parallel (batch of individual getById calls)
+  const ids = [...allAccountIds]
+  const results = await Promise.allSettled(
+    ids.map(id => adminAPI.accounts.getById(id))
+  )
+  for (let i = 0; i < ids.length; i++) {
+    const result = results[i]
+    if (result.status === 'fulfilled') {
+      ruleAccountNameCache.value[ids[i]] = result.value.name
+    }
+    // If rejected, the cache won't have the name, so it'll show "#ID" which is acceptable
+  }
+}
+
 function closeDialog() {
   showDialog.value = false
   editingChannel.value = null
@@ -961,7 +1388,7 @@ async function handleSubmit() {
       const intervalErr = validateIntervals(entry.intervals)
       if (intervalErr) {
         const platformLabel = t('admin.groups.platforms.' + section.platform, section.platform)
-        const modelLabel = entry.models.join(', ') || '未命名'
+        const modelLabel = entry.models.join(', ') || t('admin.channels.form.unnamed')
         appStore.showError(`${platformLabel} - ${modelLabel}: ${intervalErr}`)
         activeTab.value = section.platform
         return
@@ -969,7 +1396,7 @@ async function handleSubmit() {
     }
   }
 
-  const { group_ids, model_pricing, model_mapping } = formToAPI()
+  const { group_ids, model_pricing, model_mapping, features_config } = formToAPI()
 
   submitting.value = true
   try {
@@ -982,7 +1409,10 @@ async function handleSubmit() {
         model_pricing,
         model_mapping: Object.keys(model_mapping).length > 0 ? model_mapping : {},
         billing_model_source: form.billing_model_source,
-        restrict_models: form.restrict_models
+        restrict_models: form.restrict_models,
+        features_config,
+        apply_pricing_to_account_stats: form.apply_pricing_to_account_stats,
+        account_stats_pricing_rules: accountStatsRulesToAPI()
       }
       await adminAPI.channels.update(editingChannel.value.id, req)
       appStore.showSuccess(t('admin.channels.updateSuccess', 'Channel updated'))
@@ -994,19 +1424,20 @@ async function handleSubmit() {
         model_pricing,
         model_mapping: Object.keys(model_mapping).length > 0 ? model_mapping : {},
         billing_model_source: form.billing_model_source,
-        restrict_models: form.restrict_models
+        restrict_models: form.restrict_models,
+        features_config,
+        apply_pricing_to_account_stats: form.apply_pricing_to_account_stats,
+        account_stats_pricing_rules: accountStatsRulesToAPI()
       }
       await adminAPI.channels.create(req)
       appStore.showSuccess(t('admin.channels.createSuccess', 'Channel created'))
     }
     closeDialog()
     loadChannels()
-  } catch (error: any) {
-    const msg = error.response?.data?.detail || (editingChannel.value
+  } catch (error: unknown) {
+    appStore.showError(extractApiErrorMessage(error, editingChannel.value
       ? t('admin.channels.updateError', 'Failed to update channel')
-      : t('admin.channels.createError', 'Failed to create channel'))
-    appStore.showError(msg)
-    console.error('Error saving channel:', error)
+      : t('admin.channels.createError', 'Failed to create channel')))
   } finally {
     submitting.value = false
   }
@@ -1044,9 +1475,8 @@ async function confirmDelete() {
     showDeleteDialog.value = false
     deletingChannel.value = null
     loadChannels()
-  } catch (error: any) {
-    appStore.showError(error.response?.data?.detail || t('admin.channels.deleteError', 'Failed to delete channel'))
-    console.error('Error deleting channel:', error)
+  } catch (error: unknown) {
+    appStore.showError(extractApiErrorMessage(error, t('admin.channels.deleteError', 'Failed to delete channel')))
   }
 }
 
@@ -1054,11 +1484,16 @@ async function confirmDelete() {
 onMounted(() => {
   loadChannels()
   loadGroups()
+  loadWebSearchGlobalState()
+  document.addEventListener('click', handleRuleAccountClickOutside)
 })
 
 onUnmounted(() => {
   clearTimeout(searchTimeout)
   abortController?.abort()
+  document.removeEventListener('click', handleRuleAccountClickOutside)
+  ruleAccountSearchRunner.clearAll()
+  clearAllRuleAccountSearchState()
 })
 </script>
 

frontend/src/views/admin/GroupsView.vue

@@ -3253,6 +3253,7 @@ const editForm = reactive({
   fallback_group_id_on_invalid_request: null as number | null,
   // OpenAI Messages 调度配置（仅 openai 平台使用）
   allow_messages_dispatch: false,
+  default_mapped_model: '',
   opus_mapped_model: editMessagesDispatchDefaults.opus_mapped_model,
   sonnet_mapped_model: editMessagesDispatchDefaults.sonnet_mapped_model,
   haiku_mapped_model: editMessagesDispatchDefaults.haiku_mapped_model,
@@ -3732,6 +3733,19 @@ watch(
   },
 );
 
+watch(
+  () => editForm.platform,
+  (newVal) => {
+    if (!['anthropic', 'antigravity'].includes(newVal)) {
+      editForm.fallback_group_id_on_invalid_request = null
+    }
+    if (newVal !== 'openai') {
+      editForm.allow_messages_dispatch = false
+      editForm.default_mapped_model = ''
+    }
+  }
+)
+
 // 点击外部关闭账号搜索下拉框
 const handleClickOutside = (event: MouseEvent) => {
   const target = event.target as HTMLElement;

frontend/src/views/admin/ProxiesView.vue

@@ -985,7 +985,8 @@ const {
   deselect,
   clear: clearSelectedProxies,
   removeMany: removeSelectedProxies,
-  toggleVisible
+  toggleVisible,
+  batchUpdate
 } = useTableSelection<Proxy>({
   rows: proxies,
   getId: (proxy) => proxy.id
@@ -993,7 +994,8 @@ const {
 useSwipeSelect(proxyTableRef, {
   isSelected,
   select,
-  deselect
+  deselect,
+  batchUpdate
 })
 const accountsProxy = ref<Proxy | null>(null)
 const proxyAccounts = ref<ProxyAccountSummary[]>([])

frontend/src/views/admin/SettingsView.vue

@@ -1711,6 +1711,231 @@
             </div>
           </div>
         </div>
+        <!-- Web Search Emulation -->
+        <div class="card">
+          <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+            <h2 class="text-lg font-semibold text-gray-900 dark:text-white">
+              {{ t('admin.settings.webSearchEmulation.title') }}
+            </h2>
+            <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+              {{ t('admin.settings.webSearchEmulation.description') }}
+            </p>
+          </div>
+          <div class="space-y-5 p-6">
+            <!-- Global Toggle -->
+            <div class="flex items-center justify-between">
+              <div>
+                <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+                  {{ t('admin.settings.webSearchEmulation.enabled') }}
+                </label>
+                <p class="mt-0.5 text-xs text-gray-500 dark:text-gray-400">
+                  {{ t('admin.settings.webSearchEmulation.enabledHint') }}
+                </p>
+              </div>
+              <Toggle v-model="webSearchConfig.enabled" />
+            </div>
+
+            <!-- Providers -->
+            <div v-if="webSearchConfig.enabled" class="space-y-4">
+              <div class="flex items-center justify-between">
+                <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+                  {{ t('admin.settings.webSearchEmulation.providers') }}
+                </label>
+                <button type="button" class="btn btn-secondary btn-sm" @click="addWebSearchProvider">
+                  {{ t('admin.settings.webSearchEmulation.addProvider') }}
+                </button>
+              </div>
+
+              <div v-if="webSearchConfig.providers.length === 0" class="rounded-lg border border-dashed border-gray-300 p-4 text-center text-sm text-gray-400 dark:border-dark-600">
+                {{ t('admin.settings.webSearchEmulation.noProviders') }}
+              </div>
+
+              <div v-for="(provider, pIdx) in webSearchConfig.providers" :key="pIdx"
+                class="rounded-lg border border-gray-200 dark:border-dark-600">
+                <!-- Collapsible header -->
+                <div
+                  class="flex cursor-pointer items-center justify-between px-4 py-3"
+                  @click="toggleProviderExpand(pIdx)"
+                >
+                  <div class="flex items-center gap-3">
+                    <svg
+                      class="h-4 w-4 text-gray-400 transition-transform"
+                      :class="{ 'rotate-90': expandedProviders[pIdx] }"
+                      fill="none" viewBox="0 0 24 24" stroke="currentColor"
+                    >
+                      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" />
+                    </svg>
+                    <Select
+                      v-model="provider.type"
+                      :options="[
+                        { value: 'brave', label: 'Brave Search' },
+                        { value: 'tavily', label: 'Tavily' },
+                      ]"
+                      class="w-36"
+                      @click.stop
+                    />
+                    <!-- Quota summary (always visible) -->
+                    <span class="text-xs text-gray-400">
+                      {{ provider.quota_used ?? 0 }} / {{ provider.quota_limit != null && provider.quota_limit > 0 ? provider.quota_limit : '∞' }}
+                    </span>
+                    <span v-if="!expandedProviders[pIdx] && provider.api_key_configured" class="text-xs text-green-500">
+                      {{ t('admin.settings.webSearchEmulation.apiKeyConfigured') }}
+                    </span>
+                  </div>
+                  <button type="button" class="text-red-500 hover:text-red-700 text-xs" @click.stop="removeWebSearchProvider(pIdx)">
+                    {{ t('admin.settings.webSearchEmulation.removeProvider') }}
+                  </button>
+                </div>
+
+                <!-- Expanded content -->
+                <div v-if="expandedProviders[pIdx]" class="space-y-3 border-t border-gray-100 px-4 pb-4 pt-3 dark:border-dark-700">
+                  <!-- API Key with inline show/copy -->
+                  <div>
+                    <label class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.apiKey') }}</label>
+                    <div class="relative">
+                      <input
+                        v-model="provider.api_key"
+                        :type="apiKeyVisible[pIdx] ? 'text' : 'password'"
+                        class="input w-full text-sm"
+                        :class="(provider.api_key || provider.api_key_configured) ? 'pr-16' : ''"
+                        :placeholder="provider.api_key_configured ? '••••••••' : t('admin.settings.webSearchEmulation.apiKeyPlaceholder')"
+                      />
+                      <div v-if="provider.api_key || provider.api_key_configured" class="absolute inset-y-0 right-0 flex items-center pr-1.5">
+                        <button
+                          type="button"
+                          class="rounded p-1 text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"
+                          :title="apiKeyVisible[pIdx] ? t('admin.settings.webSearchEmulation.hideApiKey') : t('admin.settings.webSearchEmulation.showApiKey')"
+                          @click="apiKeyVisible[pIdx] = !apiKeyVisible[pIdx]"
+                        >
+                          <svg v-if="!apiKeyVisible[pIdx]" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
+                          </svg>
+                          <svg v-else class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.878 9.878L3 3m6.878 6.878L21 21" />
+                          </svg>
+                        </button>
+                        <button
+                          type="button"
+                          class="rounded p-1 text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"
+                          :class="{ 'opacity-30 cursor-not-allowed': !provider.api_key }"
+                          :title="t('admin.settings.webSearchEmulation.copyApiKey')"
+                          :disabled="!provider.api_key"
+                          @click="copyApiKey(pIdx)"
+                        >
+                          <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z" />
+                          </svg>
+                        </button>
+                      </div>
+                    </div>
+                  </div>
+
+                  <!-- Quota + Subscription in compact row -->
+                  <div class="grid grid-cols-2 gap-3">
+                    <div>
+                      <label class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.quotaLimit') }}</label>
+                      <input v-model="provider.quota_limit" type="number" min="1" class="input text-sm" :placeholder="'∞'" />
+                      <p class="mt-0.5 text-xs text-gray-400">{{ t('admin.settings.webSearchEmulation.quotaLimitHint') }}</p>
+                    </div>
+                    <div>
+                      <label class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.subscribedAt') }}</label>
+                      <input
+                        :value="formatSubscribedAt(provider.subscribed_at)"
+                        type="date"
+                        class="input text-sm"
+                        @input="provider.subscribed_at = parseSubscribedAt(($event.target as HTMLInputElement).value)"
+                      />
+                      <p class="mt-0.5 text-xs text-gray-400">{{ t('admin.settings.webSearchEmulation.subscribedAtHint') }}</p>
+                    </div>
+                  </div>
+
+                  <!-- Usage display -->
+                  <div class="flex items-center gap-2">
+                    <span class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.quotaUsage') }}:</span>
+                    <div v-if="provider.quota_limit != null && provider.quota_limit > 0" class="flex-1 rounded-full bg-gray-200 dark:bg-dark-600" style="height: 6px">
+                      <div
+                        class="h-full rounded-full transition-all"
+                        :class="quotaPercentage(provider) > 90 ? 'bg-red-500' : quotaPercentage(provider) > 70 ? 'bg-yellow-500' : 'bg-green-500'"
+                        :style="{ width: Math.min(quotaPercentage(provider), 100) + '%' }"
+                      />
+                    </div>
+                    <div v-else class="flex-1" />
+                    <span class="text-xs text-gray-500">{{ provider.quota_used ?? 0 }} / {{ provider.quota_limit != null && provider.quota_limit > 0 ? provider.quota_limit : '∞' }}</span>
+                    <button
+                      v-if="(provider.quota_used ?? 0) > 0"
+                      type="button"
+                      class="text-xs text-primary-600 hover:text-primary-700"
+                      @click="resetWebSearchUsage(pIdx)"
+                    >
+                      {{ t('admin.settings.webSearchEmulation.resetUsage') }}
+                    </button>
+                  </div>
+
+                  <!-- Proxy + Test on same row -->
+                  <div class="flex items-end gap-3">
+                    <div class="flex-1">
+                      <label class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.proxy') }}</label>
+                      <ProxySelector v-model="provider.proxy_id" :proxies="webSearchProxies" />
+                    </div>
+                    <button
+                      type="button"
+                      class="btn btn-secondary btn-sm whitespace-nowrap"
+                      @click="openTestDialog()"
+                    >
+                      {{ t('admin.settings.webSearchEmulation.test') }}
+                    </button>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <!-- Web Search Test Dialog -->
+        <div v-if="wsTestDialogOpen" class="fixed inset-0 z-50 flex items-center justify-center bg-black/50" @click.self="wsTestDialogOpen = false">
+          <div class="mx-4 w-full max-w-lg rounded-xl bg-white p-6 shadow-xl dark:bg-dark-800">
+            <h3 class="mb-4 text-lg font-semibold text-gray-900 dark:text-white">
+              {{ t('admin.settings.webSearchEmulation.testResultTitle') }}
+            </h3>
+            <div class="flex items-center gap-2">
+              <input
+                v-model="wsTestQuery"
+                type="text"
+                class="input flex-1 text-sm"
+                :placeholder="t('admin.settings.webSearchEmulation.testDefaultQuery')"
+                @keyup.enter="testWebSearchProvider()"
+              />
+              <button
+                type="button"
+                class="btn btn-primary btn-sm"
+                :disabled="wsTestLoading"
+                @click="testWebSearchProvider()"
+              >
+                {{ wsTestLoading ? t('admin.settings.webSearchEmulation.testing') : t('admin.settings.webSearchEmulation.test') }}
+              </button>
+            </div>
+            <!-- Test results -->
+            <div v-if="wsTestResult" class="mt-4 max-h-80 overflow-y-auto rounded-lg bg-gray-50 p-4 dark:bg-dark-700">
+              <p class="mb-2 text-sm font-medium text-gray-700 dark:text-gray-300">
+                {{ t('admin.settings.webSearchEmulation.testResultProvider') }}: {{ wsTestResult.provider }}
+              </p>
+              <div v-if="wsTestResult.results.length === 0" class="text-sm text-gray-400">
+                {{ t('admin.settings.webSearchEmulation.testNoResults') }}
+              </div>
+              <div v-for="(r, rIdx) in wsTestResult.results" :key="rIdx" class="mt-2 border-t border-gray-200 pt-2 first:mt-0 first:border-0 first:pt-0 dark:border-dark-600">
+                <a :href="r.url" target="_blank" class="text-sm font-medium text-blue-600 hover:underline dark:text-blue-400">{{ r.title }}</a>
+                <p class="mt-0.5 text-xs text-gray-500 dark:text-gray-400">{{ r.snippet }}</p>
+              </div>
+            </div>
+            <div class="mt-4 flex justify-end">
+              <button type="button" class="btn btn-secondary btn-sm" @click="wsTestDialogOpen = false">
+                {{ t('common.close') }}
+              </button>
+            </div>
+          </div>
+        </div>
+
         </div><!-- /Tab: Gateway — Claude Code, Scheduling -->
 
         <!-- Tab: General -->
@@ -2468,6 +2693,73 @@
             </div>
           </div>
         </div>
+        <!-- Balance Low Notification -->
+        <div class="card">
+          <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+            <h3 class="text-base font-medium text-gray-900 dark:text-white">
+              {{ t('admin.settings.balanceNotify.title') }}
+            </h3>
+            <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+              {{ t('admin.settings.balanceNotify.description') }}
+            </p>
+          </div>
+          <div class="px-6 py-6 space-y-4">
+            <div class="flex items-center justify-between">
+              <label class="mb-0 block text-sm font-medium text-gray-700 dark:text-gray-300">{{ t('admin.settings.balanceNotify.enabled') }}</label>
+              <Toggle v-model="form.balance_low_notify_enabled" />
+            </div>
+            <div v-if="form.balance_low_notify_enabled">
+              <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">{{ t('admin.settings.balanceNotify.threshold') }}</label>
+              <div class="relative">
+                <span class="absolute left-3 top-1/2 -translate-y-1/2 text-gray-400">$</span>
+                <input v-model.number="form.balance_low_notify_threshold" type="number" min="0" step="0.01" class="input pl-7" />
+              </div>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('admin.settings.balanceNotify.thresholdHint') }}</p>
+            </div>
+            <div>
+              <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">{{ t('admin.settings.balanceNotify.rechargeUrl') }}</label>
+              <input v-model="form.balance_low_notify_recharge_url" type="url" class="input" :placeholder="currentOrigin" />
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('admin.settings.balanceNotify.rechargeUrlHint') }}</p>
+            </div>
+          </div>
+        </div>
+
+        <!-- Account Quota Notification -->
+        <div class="card">
+          <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+            <h3 class="text-base font-medium text-gray-900 dark:text-white">
+              {{ t('admin.settings.quotaNotify.title') }}
+            </h3>
+            <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+              {{ t('admin.settings.quotaNotify.description') }}
+            </p>
+          </div>
+          <div class="px-6 py-6 space-y-4">
+            <div class="flex items-center justify-between">
+              <label class="mb-0 block text-sm font-medium text-gray-700 dark:text-gray-300">{{ t('admin.settings.quotaNotify.enabled') }}</label>
+              <Toggle v-model="form.account_quota_notify_enabled" />
+            </div>
+            <div v-if="form.account_quota_notify_enabled">
+              <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">{{ t('admin.settings.quotaNotify.emails') }}</label>
+              <div class="space-y-2">
+                <div v-for="(entry, index) in (form.account_quota_notify_emails || [])" :key="index" class="flex items-center gap-2">
+                  <label class="relative inline-flex items-center cursor-pointer shrink-0">
+                    <input type="checkbox" :checked="!entry.disabled" @change="entry.disabled = !entry.disabled" class="sr-only peer" />
+                    <div class="w-9 h-5 bg-gray-200 peer-focus:outline-none rounded-full peer dark:bg-gray-600 peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-4 after:w-4 after:transition-all dark:after:border-gray-500 peer-checked:bg-primary-600"></div>
+                  </label>
+                  <input v-model="entry.email" type="email" class="input flex-1" :placeholder="t('admin.settings.quotaNotify.emailPlaceholder')" />
+                  <button @click="form.account_quota_notify_emails.splice(index, 1)" class="btn btn-secondary px-2" type="button">
+                    <Icon name="x" size="xs" class="h-4 w-4" />
+                  </button>
+                </div>
+                <button @click="addQuotaNotifyEmail" class="btn btn-secondary btn-sm" type="button">
+                  + {{ t('admin.settings.quotaNotify.addEmail') }}
+                </button>
+              </div>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('admin.settings.quotaNotify.emailsHint') }}</p>
+            </div>
+          </div>
+        </div>
         </div><!-- /Tab: Email -->
 
         <!-- Tab: Backup -->
@@ -2523,9 +2815,12 @@ import { adminAPI } from '@/api'
 import type {
   SystemSettings,
   UpdateSettingsRequest,
-  DefaultSubscriptionSetting
+  DefaultSubscriptionSetting,
+  WebSearchEmulationConfig,
+  WebSearchProviderConfig,
+  WebSearchTestResult,
 } from '@/api/admin/settings'
-import type { AdminGroup } from '@/types'
+import type { AdminGroup, Proxy, NotifyEmailEntry } from '@/types'
 import type { ProviderInstance } from '@/types/payment'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -2536,6 +2831,7 @@ import PaymentProviderDialog from '@/components/payment/PaymentProviderDialog.vu
 import GroupBadge from '@/components/common/GroupBadge.vue'
 import GroupOptionItem from '@/components/common/GroupOptionItem.vue'
 import Toggle from '@/components/common/Toggle.vue'
+import ProxySelector from '@/components/common/ProxySelector.vue'
 import ImageUpload from '@/components/common/ImageUpload.vue'
 import BackupSettings from '@/views/admin/BackupView.vue'
 import { useClipboard } from '@/composables/useClipboard'
@@ -2743,9 +3039,177 @@ const form = reactive<SettingsForm>({
   // Gateway forwarding behavior
   enable_fingerprint_unification: true,
   enable_metadata_passthrough: false,
-  enable_cch_signing: false
+  enable_cch_signing: false,
+  // Balance & quota notification
+  balance_low_notify_enabled: false,
+  balance_low_notify_threshold: 0,
+  balance_low_notify_recharge_url: '',
+  account_quota_notify_enabled: false,
+  account_quota_notify_emails: [] as NotifyEmailEntry[]
+})
+
+// Proxies for web search emulation ProxySelector
+const webSearchProxies = ref<Proxy[]>([])
+
+// Web Search Emulation config (loaded/saved separately)
+const DEFAULT_WEB_SEARCH_QUOTA_LIMIT = 1000
+
+const webSearchConfig = reactive<WebSearchEmulationConfig>({
+  enabled: false,
+  providers: [],
 })
 
+const expandedProviders = reactive<Record<number, boolean>>({})
+const apiKeyVisible = reactive<Record<number, boolean>>({})
+const wsTestQuery = ref('')
+const wsTestLoading = ref(false)
+const wsTestResult = ref<WebSearchTestResult | null>(null)
+const wsTestDialogOpen = ref(false)
+
+function openTestDialog() {
+  wsTestResult.value = null
+  wsTestDialogOpen.value = true
+}
+
+function toggleProviderExpand(idx: number) {
+  expandedProviders[idx] = !expandedProviders[idx]
+}
+
+function removeWebSearchProvider(idx: number) {
+  webSearchConfig.providers.splice(idx, 1)
+  // Re-index expandedProviders and apiKeyVisible after removal
+  const newExpanded: Record<number, boolean> = {}
+  const newVisible: Record<number, boolean> = {}
+  for (let i = 0; i < webSearchConfig.providers.length; i++) {
+    const oldIdx = i >= idx ? i + 1 : i
+    newExpanded[i] = expandedProviders[oldIdx] ?? false
+    newVisible[i] = apiKeyVisible[oldIdx] ?? false
+  }
+  Object.keys(expandedProviders).forEach((k) => delete expandedProviders[Number(k)])
+  Object.keys(apiKeyVisible).forEach((k) => delete apiKeyVisible[Number(k)])
+  Object.assign(expandedProviders, newExpanded)
+  Object.assign(apiKeyVisible, newVisible)
+}
+
+function addWebSearchProvider() {
+  const idx = webSearchConfig.providers.length
+  webSearchConfig.providers.push({
+    type: 'brave',
+    api_key: '',
+    api_key_configured: false,
+    quota_limit: DEFAULT_WEB_SEARCH_QUOTA_LIMIT,
+    subscribed_at: null,
+    proxy_id: null,
+    expires_at: null,
+  } as WebSearchProviderConfig)
+  expandedProviders[idx] = true
+}
+
+function formatSubscribedAt(ts: number | null): string {
+  if (!ts) return ''
+  // Use UTC to avoid timezone drift on repeated edits
+  const d = new Date(ts * 1000)
+  const y = d.getUTCFullYear()
+  const m = String(d.getUTCMonth() + 1).padStart(2, '0')
+  const day = String(d.getUTCDate()).padStart(2, '0')
+  return `${y}-${m}-${day}`
+}
+
+function parseSubscribedAt(dateStr: string): number | null {
+  if (!dateStr) return null
+  // Parse as UTC to match formatSubscribedAt
+  return Math.floor(new Date(dateStr + 'T00:00:00Z').getTime() / 1000)
+}
+
+function quotaPercentage(provider: WebSearchProviderConfig): number {
+  if (!provider.quota_limit || provider.quota_limit <= 0) return 0
+  return ((provider.quota_used ?? 0) / provider.quota_limit) * 100
+}
+
+async function resetWebSearchUsage(idx: number) {
+  const provider = webSearchConfig.providers[idx]
+  if (!provider) return
+  if (!confirm(t('admin.settings.webSearchEmulation.resetUsageConfirm'))) return
+  try {
+    await adminAPI.settings.resetWebSearchUsage({ provider_type: provider.type })
+    provider.quota_used = 0
+    appStore.showSuccess(t('admin.settings.webSearchEmulation.resetUsageSuccess'))
+  } catch (err: unknown) {
+    appStore.showError(extractApiErrorMessage(err, t('common.error')))
+  }
+}
+
+async function copyApiKey(idx: number) {
+  const key = webSearchConfig.providers[idx]?.api_key
+  if (!key) {
+    appStore.showError(t('admin.settings.webSearchEmulation.apiKeyPlaceholder'))
+    return
+  }
+  try {
+    await navigator.clipboard.writeText(key)
+    appStore.showSuccess(t('admin.settings.webSearchEmulation.copied'))
+  } catch {
+    appStore.showError(t('common.error'))
+  }
+}
+
+async function testWebSearchProvider() {
+  wsTestLoading.value = true
+  wsTestResult.value = null
+  try {
+    const query = wsTestQuery.value.trim() || t('admin.settings.webSearchEmulation.testDefaultQuery')
+    wsTestResult.value = await adminAPI.settings.testWebSearchEmulation(query)
+  } catch (err: unknown) {
+    appStore.showError(extractApiErrorMessage(err, t('common.error')))
+  } finally {
+    wsTestLoading.value = false
+  }
+}
+
+async function loadWebSearchConfig() {
+  try {
+    const [resp, proxiesResp] = await Promise.all([
+      adminAPI.settings.getWebSearchEmulationConfig(),
+      adminAPI.proxies.list().catch(() => ({ items: [] as Proxy[] })),
+    ])
+    if (resp) {
+      webSearchConfig.enabled = resp.enabled || false
+      webSearchConfig.providers = resp.providers || []
+    }
+    webSearchProxies.value = proxiesResp.items || []
+  } catch (err: unknown) {
+    // 404 is expected when config hasn't been created yet; show error for other failures
+    const status = (err as { status?: number })?.status
+    if (status !== 404 && status !== undefined) {
+      appStore.showError(extractApiErrorMessage(err, t('common.error')))
+    }
+  }
+}
+
+async function saveWebSearchConfig(): Promise<boolean> {
+  try {
+    for (const p of webSearchConfig.providers) {
+      const raw = p.quota_limit
+      if (raw != null && Number(raw) !== 0 && Number(raw) < 1) {
+        appStore.showError(t('admin.settings.webSearchEmulation.quotaLimitMustBePositive'))
+        return false
+      }
+    }
+    const providers = webSearchConfig.providers.map((p: WebSearchProviderConfig) => ({
+      ...p,
+      quota_limit: Number(p.quota_limit) > 0 ? Number(p.quota_limit) : null,
+    }))
+    await adminAPI.settings.updateWebSearchEmulationConfig({
+      enabled: webSearchConfig.enabled,
+      providers,
+    })
+    return true
+  } catch (err: unknown) {
+    appStore.showError(extractApiErrorMessage(err, t('common.error')))
+    return false
+  }
+}
+
 const defaultSubscriptionGroupOptions = computed<DefaultSubscriptionGroupOption[]>(() =>
   subscriptionGroups.value.map((group) => ({
     value: group.id,
@@ -2825,6 +3289,16 @@ function handleRegistrationEmailSuffixWhitelistPaste(event: ClipboardEvent) {
   }
 }
 
+// Quota notify email helpers
+const addQuotaNotifyEmail = () => {
+  if (!form.account_quota_notify_emails) {
+    form.account_quota_notify_emails = []
+  }
+  form.account_quota_notify_emails.push({ email: '', disabled: false, verified: true })
+}
+
+const currentOrigin = typeof window !== 'undefined' ? window.location.origin : ''
+
 // LinuxDo OAuth redirect URL suggestion
 const linuxdoRedirectUrlSuggestion = computed(() => {
   if (typeof window === 'undefined') return ''
@@ -2960,6 +3434,9 @@ async function loadSettings() {
     form.turnstile_secret_key = ''
     form.linuxdo_connect_client_secret = ''
     form.oidc_connect_client_secret = ''
+
+    // Load web search emulation config separately
+    await loadWebSearchConfig()
   } catch (error: unknown) {
     loadFailed.value = true
     appStore.showError(extractApiErrorMessage(error, t('admin.settings.failedToLoad')))
@@ -3161,6 +3638,12 @@ async function saveSettings() {
       payment_cancel_rate_limit_window: Number(form.payment_cancel_rate_limit_window) || 1,
       payment_cancel_rate_limit_unit: form.payment_cancel_rate_limit_unit,
       payment_cancel_rate_limit_window_mode: form.payment_cancel_rate_limit_window_mode,
+      // Balance & quota notification
+      balance_low_notify_enabled: form.balance_low_notify_enabled,
+      balance_low_notify_threshold: Number(form.balance_low_notify_threshold) || 0,
+      balance_low_notify_recharge_url: (form.balance_low_notify_recharge_url = form.balance_low_notify_recharge_url || currentOrigin),
+      account_quota_notify_enabled: form.account_quota_notify_enabled,
+      account_quota_notify_emails: (form.account_quota_notify_emails || []).filter((e) => e.email.trim() !== ''),
     }
 
     const updated = await adminAPI.settings.updateSettings(payload)
@@ -3181,10 +3664,14 @@ async function saveSettings() {
     form.turnstile_secret_key = ''
     form.linuxdo_connect_client_secret = ''
     form.oidc_connect_client_secret = ''
+    // Save web search emulation config separately (errors handled internally)
+    const wsOk = await saveWebSearchConfig()
     // Refresh cached settings so sidebar/header update immediately
     await appStore.fetchPublicSettings(true)
     await adminSettingsStore.fetch(true)
-    appStore.showSuccess(t('admin.settings.settingsSaved'))
+    if (wsOk) {
+      appStore.showSuccess(t('admin.settings.settingsSaved'))
+    }
   } catch (error: unknown) {
     appStore.showError(extractApiErrorMessage(error, t('admin.settings.failedToSave')))
   } finally {
@@ -3624,12 +4111,26 @@ async function handleSaveProvider(payload: Partial<ProviderInstance>) {
   }
 }
 
-async function handleToggleField(provider: ProviderInstance, field: 'enabled' | 'refund_enabled') {
-  const newValue = field === 'enabled' ? !provider.enabled : !provider.refund_enabled
+async function handleToggleField(provider: ProviderInstance, field: 'enabled' | 'refund_enabled' | 'allow_user_refund') {
+  let newValue: boolean
+  if (field === 'enabled') newValue = !provider.enabled
+  else if (field === 'refund_enabled') newValue = !provider.refund_enabled
+  else newValue = !provider.allow_user_refund
+
+  const payload: Record<string, boolean> = { [field]: newValue }
+  // Cascade: turning off refund_enabled also turns off allow_user_refund
+  if (field === 'refund_enabled' && !newValue) {
+    payload.allow_user_refund = false
+  }
   try {
-    await adminAPI.payment.updateProvider(provider.id, { [field]: newValue })
+    await adminAPI.payment.updateProvider(provider.id, payload)
     if (field === 'enabled') provider.enabled = newValue
-    else provider.refund_enabled = newValue
+    else if (field === 'refund_enabled') {
+      provider.refund_enabled = newValue
+      if (!newValue) provider.allow_user_refund = false
+    } else {
+      provider.allow_user_refund = newValue
+    }
   } catch (err: unknown) { appStore.showError(extractApiErrorMessage(err, t('common.error'), paymentErrorMap.value)) }
 }
 

frontend/src/views/admin/UsageView.vue

@@ -495,7 +495,7 @@ const exportToExcel = async () => {
         log.cache_read_cost?.toFixed(6) || '0.000000', log.cache_creation_cost?.toFixed(6) || '0.000000',
         log.rate_multiplier?.toPrecision(4) || '1.00', (log.account_rate_multiplier ?? 1).toPrecision(4),
         log.total_cost?.toFixed(6) || '0.000000', log.actual_cost?.toFixed(6) || '0.000000',
-        (log.total_cost * (log.account_rate_multiplier ?? 1)).toFixed(6), log.first_token_ms ?? '', log.duration_ms,
+        ((log.account_stats_cost ?? log.total_cost) * (log.account_rate_multiplier ?? 1)).toFixed(6), log.first_token_ms ?? '', log.duration_ms,
         log.request_id || '', log.user_agent || '', log.ip_address || ''
       ])
       if (rows.length) {

frontend/src/views/admin/orders/AdminPaymentDashboardView.vue

@@ -42,7 +42,7 @@
                   <span class="text-sm text-gray-700 dark:text-gray-300">{{ t('payment.methods.' + method.type, method.type) }}</span>
                 </div>
                 <div class="text-right">
-                  <span class="text-sm font-medium text-gray-900 dark:text-white">${{ method.amount.toFixed(2) }}</span>
+                  <span class="text-sm font-medium text-gray-900 dark:text-white">&yen;{{ method.amount.toFixed(2) }}</span>
                   <span class="ml-2 text-xs text-gray-500 dark:text-gray-400">({{ method.count }})</span>
                 </div>
               </div>
@@ -57,7 +57,7 @@
                   <span :class="['flex h-6 w-6 items-center justify-center rounded-full text-xs font-bold', rankClass(idx)]">{{ idx + 1 }}</span>
                   <span class="text-sm text-gray-700 dark:text-gray-300">{{ user.email }}</span>
                 </div>
-                <span class="text-sm font-medium text-gray-900 dark:text-white">${{ user.amount.toFixed(2) }}</span>
+                <span class="text-sm font-medium text-gray-900 dark:text-white">&yen;{{ user.amount.toFixed(2) }}</span>
               </div>
             </div>
           </div>

frontend/src/views/admin/orders/AdminPaymentPlansView.vue

@@ -29,7 +29,7 @@
         </template>
         <template #cell-price="{ value, row }">
           <div class="text-sm">
-            <span class="font-medium text-gray-900 dark:text-white">${{ value.toFixed(2) }}</span>
+            <span class="font-medium text-gray-900 dark:text-white">${{ (value ?? 0).toFixed(2) }}</span>
             <span v-if="row.original_price" class="ml-1 text-xs text-gray-400 line-through">${{ row.original_price.toFixed(2) }}</span>
           </div>
         </template>
@@ -67,86 +67,14 @@
     </div>
 
     <!-- Plan Edit Dialog -->
-    <BaseDialog :show="showPlanDialog" :title="editingPlan ? t('payment.admin.editPlan') : t('payment.admin.createPlan')" width="wide" @close="showPlanDialog = false">
-      <form id="plan-form" @submit.prevent="handleSavePlan" class="space-y-4">
-        <div class="grid grid-cols-2 gap-4">
-          <div>
-            <label class="input-label">{{ t('payment.admin.planName') }}</label>
-            <input v-model="planForm.name" type="text" class="input" required />
-          </div>
-          <div>
-            <label class="input-label">{{ t('payment.admin.group') }}</label>
-            <Select v-model="planForm.group_id" :options="groupOptions" class="w-full">
-              <template #selected="{ option }">
-                <span v-if="option?.platform" :class="platformTextClass(String(option.platform))">{{ option.label }}</span>
-                <span v-else>{{ option?.label || t('payment.admin.selectGroup') }}</span>
-              </template>
-              <template #option="{ option, selected }">
-                <span class="flex-1 truncate text-left" :class="option.platform ? platformTextClass(String(option.platform)) : ''">{{ option.label }}</span>
-                <Icon v-if="selected" name="check" size="sm" class="text-primary-500" :stroke-width="2" />
-              </template>
-            </Select>
-          </div>
-        </div>
-
-        <!-- Group Info Preview -->
-        <div v-if="selectedGroupInfo" class="rounded-lg border border-gray-200 bg-gray-50 p-3 dark:border-dark-600 dark:bg-dark-800">
-          <div class="mb-2 flex items-center gap-2">
-            <GroupBadge :name="selectedGroupInfo.name" :platform="selectedGroupInfo.platform" :rate-multiplier="selectedGroupInfo.rate_multiplier" />
-          </div>
-          <div class="grid grid-cols-2 gap-2 text-xs">
-            <div><span class="text-gray-500">{{ t('payment.admin.dailyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.daily_limit_usd != null ? '$' + selectedGroupInfo.daily_limit_usd : t('payment.admin.unlimited') }}</span></div>
-            <div><span class="text-gray-500">{{ t('payment.admin.weeklyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.weekly_limit_usd != null ? '$' + selectedGroupInfo.weekly_limit_usd : t('payment.admin.unlimited') }}</span></div>
-            <div><span class="text-gray-500">{{ t('payment.admin.monthlyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.monthly_limit_usd != null ? '$' + selectedGroupInfo.monthly_limit_usd : t('payment.admin.unlimited') }}</span></div>
-          </div>
-        </div>
-
-        <div><label class="input-label">{{ t('payment.admin.planDescription') }}</label><textarea v-model="planForm.description" rows="2" class="input"></textarea></div>
-        <div class="grid grid-cols-3 gap-4">
-          <div><label class="input-label">{{ t('payment.admin.price') }}</label><input v-model.number="planForm.price" type="number" step="0.01" min="0" class="input" required /></div>
-          <div><label class="input-label">{{ t('payment.admin.originalPrice') }}</label><input v-model.number="planForm.original_price" type="number" step="0.01" min="0" class="input" /></div>
-          <div><label class="input-label">{{ t('payment.admin.sortOrder') }}</label><input v-model.number="planForm.sort_order" type="number" min="0" class="input" /></div>
-        </div>
-        <div class="grid grid-cols-2 gap-4">
-          <div><label class="input-label">{{ t('payment.admin.validityDays') }}</label><input v-model.number="planForm.validity_days" type="number" min="1" class="input" required /></div>
-          <div><label class="input-label">{{ t('payment.admin.validityUnit') }}</label><Select v-model="planForm.validity_unit" :options="validityUnitOptions" /></div>
-        </div>
-        <div>
-          <label class="input-label">{{ t('payment.admin.features') }}</label>
-          <textarea v-model="planFeaturesText" rows="3" class="input" :placeholder="t('payment.admin.featuresPlaceholder')"></textarea>
-          <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('payment.admin.featuresHint') }}</p>
-        </div>
-        <div class="flex items-center gap-3">
-          <label class="text-sm text-gray-700 dark:text-gray-300">{{ t('payment.admin.forSale') }}</label>
-          <button
-            type="button"
-            :class="[
-              'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
-              planForm.for_sale ? 'bg-primary-500' : 'bg-gray-300 dark:bg-dark-600'
-            ]"
-            @click="planForm.for_sale = !planForm.for_sale"
-          >
-            <span :class="[
-              'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
-              planForm.for_sale ? 'translate-x-5' : 'translate-x-0'
-            ]" />
-          </button>
-        </div>
-      </form>
-      <template #footer>
-        <div class="flex justify-end gap-3">
-          <button type="button" @click="showPlanDialog = false" class="btn btn-secondary">{{ t('common.cancel') }}</button>
-          <button type="submit" form="plan-form" :disabled="planSaving" class="btn btn-primary">{{ planSaving ? t('common.saving') : t('common.save') }}</button>
-        </div>
-      </template>
-    </BaseDialog>
+    <PlanEditDialog :show="showPlanDialog" :plan="editingPlan" :groups="groups" @close="showPlanDialog = false" @saved="loadPlans" />
 
     <ConfirmDialog :show="showDeletePlanDialog" :title="t('payment.admin.deletePlan')" :message="t('payment.admin.deletePlanConfirm')" :confirm-text="t('common.delete')" danger @confirm="handleDeletePlan" @cancel="showDeletePlanDialog = false" />
   </AppLayout>
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
 import { adminPaymentAPI } from '@/api/admin/payment'
@@ -157,11 +85,10 @@ import type { AdminGroup } from '@/types'
 import type { Column } from '@/components/common/types'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import DataTable from '@/components/common/DataTable.vue'
-import BaseDialog from '@/components/common/BaseDialog.vue'
 import ConfirmDialog from '@/components/common/ConfirmDialog.vue'
-import Select from '@/components/common/Select.vue'
 import Icon from '@/components/icons/Icon.vue'
 import GroupBadge from '@/components/common/GroupBadge.vue'
+import PlanEditDialog from './PlanEditDialog.vue'
 import { platformTextClass } from '@/utils/platformColors'
 
 const { t } = useI18n()
@@ -190,21 +117,6 @@ function getPlanNameClass(groupId: number): string {
   return group ? platformTextClass(group.platform) : 'text-gray-900 dark:text-white'
 }
 
-const groupOptions = computed(() => [
-  { value: 0, label: t('payment.admin.selectGroup'), platform: '' },
-  ...groups.value
-    .filter(g => g.subscription_type === 'subscription')
-    .map(g => ({
-      value: g.id,
-      label: `${g.name} — ${g.platform} (${g.rate_multiplier}x)`,
-      platform: g.platform,
-    })),
-])
-
-const selectedGroupInfo = computed(() => {
-  if (!planForm.group_id) return null
-  return groups.value.find(g => g.id === planForm.group_id) || null
-})
 
 // ==================== Plans ====================
 
@@ -212,17 +124,8 @@ const plansLoading = ref(false)
 const plans = ref<SubscriptionPlan[]>([])
 const showPlanDialog = ref(false)
 const showDeletePlanDialog = ref(false)
-const planSaving = ref(false)
 const editingPlan = ref<SubscriptionPlan | null>(null)
 const deletingPlanId = ref<number | null>(null)
-const planForm = reactive({ name: '', group_id: 0, description: '', price: 0, original_price: 0, validity_days: 30, validity_unit: 'days', for_sale: true, sort_order: 0 })
-const planFeaturesText = ref('')
-
-const validityUnitOptions = computed(() => [
-  { value: 'days', label: t('payment.admin.days') },
-  { value: 'weeks', label: t('payment.admin.weeks') },
-  { value: 'months', label: t('payment.admin.months') },
-])
 
 const planColumns = computed((): Column[] => [
   { key: 'id', label: 'ID' },
@@ -253,43 +156,9 @@ async function loadPlans() {
 
 function openPlanEdit(plan: SubscriptionPlan | null) {
   editingPlan.value = plan
-  if (plan) {
-    Object.assign(planForm, { name: plan.name, group_id: plan.group_id, description: plan.description, price: plan.price, original_price: plan.original_price || 0, validity_days: plan.validity_days, validity_unit: plan.validity_unit || 'days', for_sale: plan.for_sale, sort_order: plan.sort_order })
-    planFeaturesText.value = (plan.features || []).join('\n')
-  } else {
-    Object.assign(planForm, { name: '', group_id: 0, description: '', price: 0, original_price: 0, validity_days: 30, validity_unit: 'days', for_sale: true, sort_order: 0 })
-    planFeaturesText.value = ''
-  }
   showPlanDialog.value = true
 }
 
-/** Build request payload with snake_case keys matching backend JSON tags */
-function buildPlanPayload() {
-  const features = planFeaturesText.value.split('\n').map(f => f.trim()).filter(Boolean).join('\n')
-  return {
-    name: planForm.name,
-    group_id: planForm.group_id,
-    description: planForm.description,
-    price: planForm.price,
-    original_price: planForm.original_price || 0,
-    validity_days: planForm.validity_days,
-    validity_unit: planForm.validity_unit,
-    for_sale: planForm.for_sale,
-    sort_order: planForm.sort_order,
-    features,
-  }
-}
-
-async function handleSavePlan() {
-  planSaving.value = true
-  try {
-    const data = buildPlanPayload()
-    if (editingPlan.value) { await adminPaymentAPI.updatePlan(editingPlan.value.id, data) }
-    else { await adminPaymentAPI.createPlan(data) }
-    appStore.showSuccess(t('common.saved')); showPlanDialog.value = false; loadPlans()
-  } catch (err: unknown) { appStore.showError(extractApiErrorMessage(err, t('common.error'))) }
-  finally { planSaving.value = false }
-}
 
 /** Quick toggle for_sale from the list */
 async function toggleForSale(plan: SubscriptionPlan) {

frontend/src/views/admin/orders/PlanEditDialog.vue

+<template>
+  <BaseDialog :show="show" :title="plan ? t('payment.admin.editPlan') : t('payment.admin.createPlan')" width="wide" @close="emit('close')">
+    <form id="plan-form" @submit.prevent="handleSavePlan" class="space-y-4">
+      <div class="grid grid-cols-2 gap-4">
+        <div>
+          <label class="input-label">{{ t('payment.admin.planName') }} <span class="text-red-500">*</span></label>
+          <input v-model="planForm.name" type="text" class="input" required />
+        </div>
+        <div>
+          <label class="input-label">{{ t('payment.admin.group') }} <span class="text-red-500">*</span></label>
+          <Select v-model="planForm.group_id" :options="groupOptions" :placeholder="t('payment.admin.selectGroup')" class="w-full">
+            <template #selected="{ option }">
+              <span v-if="option?.platform" :class="platformTextClass(String(option.platform))">{{ option.label }}</span>
+              <span v-else>{{ option?.label || t('payment.admin.selectGroup') }}</span>
+            </template>
+            <template #option="{ option, selected }">
+              <span class="flex-1 truncate text-left" :class="option.platform ? platformTextClass(String(option.platform)) : ''">{{ option.label }}</span>
+              <Icon v-if="selected" name="check" size="sm" class="text-primary-500" :stroke-width="2" />
+            </template>
+          </Select>
+        </div>
+      </div>
+
+      <!-- Group Info Preview -->
+      <div v-if="selectedGroupInfo" class="rounded-lg border border-gray-200 bg-gray-50 p-3 dark:border-dark-600 dark:bg-dark-800">
+        <div class="mb-2 flex items-center gap-2">
+          <GroupBadge :name="selectedGroupInfo.name" :platform="selectedGroupInfo.platform" :rate-multiplier="selectedGroupInfo.rate_multiplier" />
+        </div>
+        <div class="grid grid-cols-2 gap-2 text-xs">
+          <div><span class="text-gray-500">{{ t('payment.admin.dailyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.daily_limit_usd != null ? '$' + selectedGroupInfo.daily_limit_usd : t('payment.admin.unlimited') }}</span></div>
+          <div><span class="text-gray-500">{{ t('payment.admin.weeklyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.weekly_limit_usd != null ? '$' + selectedGroupInfo.weekly_limit_usd : t('payment.admin.unlimited') }}</span></div>
+          <div><span class="text-gray-500">{{ t('payment.admin.monthlyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.monthly_limit_usd != null ? '$' + selectedGroupInfo.monthly_limit_usd : t('payment.admin.unlimited') }}</span></div>
+        </div>
+      </div>
+
+      <div><label class="input-label">{{ t('payment.admin.planDescription') }} <span class="text-red-500">*</span></label><textarea v-model="planForm.description" rows="2" class="input" required></textarea></div>
+      <div class="grid grid-cols-2 gap-4">
+        <div><label class="input-label">{{ t('payment.admin.price') }} <span class="text-red-500">*</span></label><input v-model.number="planForm.price" type="number" step="0.01" min="0.01" class="input" required /></div>
+        <div><label class="input-label">{{ t('payment.admin.originalPrice') }}</label><input v-model.number="planForm.original_price" type="number" step="0.01" min="0" class="input" /></div>
+      </div>
+      <div class="grid grid-cols-2 gap-4">
+        <div><label class="input-label">{{ t('payment.admin.validityDays') }} <span class="text-red-500">*</span></label><input v-model.number="planForm.validity_days" type="number" min="1" class="input" required /></div>
+        <div><label class="input-label">{{ t('payment.admin.validityUnit') }} <span class="text-red-500">*</span></label><Select v-model="planForm.validity_unit" :options="validityUnitOptions" /></div>
+      </div>
+      <div class="grid grid-cols-2 gap-4">
+        <div><label class="input-label">{{ t('payment.admin.sortOrder') }}</label><input v-model.number="planForm.sort_order" type="number" min="0" class="input" /></div>
+      </div>
+      <div>
+        <label class="input-label">{{ t('payment.admin.features') }}</label>
+        <textarea v-model="planFeaturesText" rows="3" class="input" :placeholder="t('payment.admin.featuresPlaceholder')"></textarea>
+        <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('payment.admin.featuresHint') }}</p>
+      </div>
+      <div class="flex items-center gap-3">
+        <label class="text-sm text-gray-700 dark:text-gray-300">{{ t('payment.admin.forSale') }}</label>
+        <button
+          type="button"
+          :class="[
+            'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+            planForm.for_sale ? 'bg-primary-500' : 'bg-gray-300 dark:bg-dark-600'
+          ]"
+          @click="planForm.for_sale = !planForm.for_sale"
+        >
+          <span :class="[
+            'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+            planForm.for_sale ? 'translate-x-5' : 'translate-x-0'
+          ]" />
+        </button>
+      </div>
+    </form>
+    <template #footer>
+      <div class="flex justify-end gap-3">
+        <button type="button" @click="emit('close')" class="btn btn-secondary">{{ t('common.cancel') }}</button>
+        <button type="submit" form="plan-form" :disabled="saving" class="btn btn-primary">{{ saving ? t('common.saving') : t('common.save') }}</button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, reactive, computed, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminPaymentAPI } from '@/api/admin/payment'
+import { extractApiErrorMessage } from '@/utils/apiError'
+import type { SubscriptionPlan } from '@/types/payment'
+import type { AdminGroup } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+import Select from '@/components/common/Select.vue'
+import Icon from '@/components/icons/Icon.vue'
+import GroupBadge from '@/components/common/GroupBadge.vue'
+import { platformTextClass } from '@/utils/platformColors'
+
+const props = defineProps<{
+  show: boolean
+  plan: SubscriptionPlan | null
+  groups: AdminGroup[]
+}>()
+
+const emit = defineEmits<{
+  close: []
+  saved: []
+}>()
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const saving = ref(false)
+const planForm = reactive({ name: '', group_id: null as number | null, description: '', price: 0, original_price: 0, validity_days: 30, validity_unit: 'days', sort_order: 0, for_sale: true })
+const planFeaturesText = ref('')
+
+const validityUnitOptions = computed(() => [
+  { value: 'days', label: t('payment.admin.days') },
+  { value: 'weeks', label: t('payment.admin.weeks') },
+  { value: 'months', label: t('payment.admin.months') },
+])
+
+const groupOptions = computed(() =>
+  props.groups
+    .filter(g => g.subscription_type === 'subscription')
+    .map(g => ({
+      value: g.id,
+      label: `${g.name} — ${g.platform} (${g.rate_multiplier}x)`,
+      platform: g.platform,
+    })),
+)
+
+const selectedGroupInfo = computed(() => {
+  if (!planForm.group_id) return null
+  return props.groups.find(g => g.id === planForm.group_id) || null
+})
+
+// Reset form when dialog opens
+watch(() => props.show, (visible) => {
+  if (!visible) return
+  if (props.plan) {
+    Object.assign(planForm, { name: props.plan.name, group_id: props.plan.group_id, description: props.plan.description, price: props.plan.price, original_price: props.plan.original_price || 0, validity_days: props.plan.validity_days, validity_unit: props.plan.validity_unit || 'days', sort_order: props.plan.sort_order || 0, for_sale: props.plan.for_sale })
+    planFeaturesText.value = (props.plan.features || []).join('\n')
+  } else {
+    Object.assign(planForm, { name: '', group_id: null, description: '', price: 0, original_price: 0, validity_days: 30, validity_unit: 'days', sort_order: 0, for_sale: true })
+    planFeaturesText.value = ''
+  }
+})
+
+/** Build request payload with snake_case keys matching backend JSON tags */
+function buildPlanPayload() {
+  const features = planFeaturesText.value.split('\n').map(f => f.trim()).filter(Boolean).join('\n')
+  return {
+    name: planForm.name,
+    group_id: planForm.group_id,
+    description: planForm.description,
+    price: planForm.price,
+    original_price: planForm.original_price || 0,
+    validity_days: planForm.validity_days,
+    validity_unit: planForm.validity_unit,
+    sort_order: planForm.sort_order,
+    for_sale: planForm.for_sale,
+    features,
+  }
+}
+
+async function handleSavePlan() {
+  if (!planForm.group_id) {
+    appStore.showError(t('payment.admin.groupRequired'))
+    return
+  }
+  if (!planForm.price || planForm.price <= 0) {
+    appStore.showError(t('payment.admin.priceRequired'))
+    return
+  }
+  if (!planForm.validity_days || planForm.validity_days < 1) {
+    appStore.showError(t('payment.admin.validityDaysRequired'))
+    return
+  }
+  saving.value = true
+  try {
+    const data = buildPlanPayload()
+    if (props.plan) { await adminPaymentAPI.updatePlan(props.plan.id, data) }
+    else { await adminPaymentAPI.createPlan(data) }
+    appStore.showSuccess(t('common.saved'))
+    emit('close')
+    emit('saved')
+  } catch (err: unknown) { appStore.showError(extractApiErrorMessage(err, t('common.error'))) }
+  finally { saving.value = false }
+}
+</script>

frontend/src/views/user/PaymentView.vue

@@ -71,15 +71,15 @@
               <div class="space-y-2 text-sm">
                 <div class="flex justify-between">
                   <span class="text-gray-500 dark:text-gray-400">{{ t('payment.amountLabel') }}</span>
-                  <span class="text-gray-900 dark:text-white">${{ validAmount.toFixed(2) }}</span>
+                  <span class="text-gray-900 dark:text-white">¥{{ validAmount.toFixed(2) }}</span>
                 </div>
                 <div class="flex justify-between">
                   <span class="text-gray-500 dark:text-gray-400">{{ t('payment.fee') }} ({{ feeRate }}%)</span>
-                  <span class="text-gray-900 dark:text-white">${{ feeAmount.toFixed(2) }}</span>
+                  <span class="text-gray-900 dark:text-white">¥{{ feeAmount.toFixed(2) }}</span>
                 </div>
                 <div class="flex justify-between border-t border-gray-200 pt-2 dark:border-dark-600">
                   <span class="font-medium text-gray-700 dark:text-gray-300">{{ t('payment.actualPay') }}</span>
-                  <span class="text-lg font-bold text-primary-600 dark:text-primary-400">${{ totalAmount.toFixed(2) }}</span>
+                  <span class="text-lg font-bold text-primary-600 dark:text-primary-400">¥{{ totalAmount.toFixed(2) }}</span>
                 </div>
               </div>
             </div>
@@ -88,7 +88,7 @@
                 <span class="h-4 w-4 animate-spin rounded-full border-2 border-white border-t-transparent"></span>
                 {{ t('common.processing') }}
               </span>
-              <span v-else>{{ t('payment.createOrder') }} ${{ (feeRate > 0 && validAmount > 0 ? totalAmount : validAmount).toFixed(2) }}</span>
+              <span v-else>{{ t('payment.createOrder') }} ¥{{ (feeRate > 0 && validAmount > 0 ? totalAmount : validAmount).toFixed(2) }}</span>
             </button>
             <div v-if="errorMessage" class="rounded-xl border border-red-200 bg-red-50 p-4 dark:border-red-800/50 dark:bg-red-900/20">
               <p class="text-sm text-red-700 dark:text-red-400">{{ errorMessage }}</p>
@@ -110,9 +110,9 @@
                 <!-- Price -->
                 <div class="flex items-baseline gap-2">
                   <span v-if="selectedPlan.original_price" class="text-sm text-gray-400 line-through dark:text-gray-500">
-                    ${{ selectedPlan.original_price }}
+                    ¥{{ selectedPlan.original_price }}
                   </span>
-                  <span :class="['text-3xl font-bold', planTextClass]">${{ selectedPlan.price }}</span>
+                  <span :class="['text-3xl font-bold', planTextClass]">¥{{ selectedPlan.price }}</span>
                   <span class="text-sm text-gray-500 dark:text-gray-400">/ {{ planValiditySuffix }}</span>
                 </div>
                 <!-- Description -->
@@ -156,15 +156,15 @@
                 <div class="space-y-2 text-sm">
                   <div class="flex justify-between">
                     <span class="text-gray-500 dark:text-gray-400">{{ t('payment.amountLabel') }}</span>
-                    <span class="text-gray-900 dark:text-white">${{ selectedPlan.price.toFixed(2) }}</span>
+                    <span class="text-gray-900 dark:text-white">¥{{ selectedPlan.price.toFixed(2) }}</span>
                   </div>
                   <div class="flex justify-between">
                     <span class="text-gray-500 dark:text-gray-400">{{ t('payment.fee') }} ({{ feeRate }}%)</span>
-                    <span class="text-gray-900 dark:text-white">${{ subFeeAmount.toFixed(2) }}</span>
+                    <span class="text-gray-900 dark:text-white">¥{{ subFeeAmount.toFixed(2) }}</span>
                   </div>
                   <div class="flex justify-between border-t border-gray-200 pt-2 dark:border-dark-600">
                     <span class="font-medium text-gray-700 dark:text-gray-300">{{ t('payment.actualPay') }}</span>
-                    <span class="text-lg font-bold text-primary-600 dark:text-primary-400">${{ subTotalAmount.toFixed(2) }}</span>
+                    <span class="text-lg font-bold text-primary-600 dark:text-primary-400">¥{{ subTotalAmount.toFixed(2) }}</span>
                   </div>
                 </div>
               </div>
@@ -173,7 +173,7 @@
                   <span class="h-4 w-4 animate-spin rounded-full border-2 border-white border-t-transparent"></span>
                   {{ t('common.processing') }}
                 </span>
-                <span v-else>{{ t('payment.createOrder') }} ${{ (feeRate > 0 ? subTotalAmount : selectedPlan.price).toFixed(2) }}</span>
+                <span v-else>{{ t('payment.createOrder') }} ¥{{ (feeRate > 0 ? subTotalAmount : selectedPlan.price).toFixed(2) }}</span>
               </button>
               <button class="btn btn-secondary w-full" @click="selectedPlan = null">{{ t('common.cancel') }}</button>
               <div v-if="errorMessage" class="rounded-xl border border-red-200 bg-red-50 p-4 dark:border-red-800/50 dark:bg-red-900/20">

frontend/src/views/user/ProfileView.vue

@@ -14,6 +14,14 @@
         </div>
       </div>
       <ProfileEditForm :initial-username="user?.username || ''" />
+      <ProfileBalanceNotifyCard
+        v-if="user && balanceLowNotifyEnabled"
+        :enabled="user.balance_notify_enabled ?? true"
+        :threshold="user.balance_notify_threshold"
+        :extra-emails="user.balance_notify_extra_emails ?? []"
+        :system-default-threshold="systemDefaultThreshold"
+        :user-email="user.email"
+      />
       <ProfilePasswordForm />
       <ProfileTotpCard />
     </div>
@@ -27,17 +35,20 @@ import { authAPI } from '@/api'; import AppLayout from '@/components/layout/AppL
 import StatCard from '@/components/common/StatCard.vue'
 import ProfileInfoCard from '@/components/user/profile/ProfileInfoCard.vue'
 import ProfileEditForm from '@/components/user/profile/ProfileEditForm.vue'
+import ProfileBalanceNotifyCard from '@/components/user/profile/ProfileBalanceNotifyCard.vue'
 import ProfilePasswordForm from '@/components/user/profile/ProfilePasswordForm.vue'
 import ProfileTotpCard from '@/components/user/profile/ProfileTotpCard.vue'
 import { Icon } from '@/components/icons'
 
 const { t } = useI18n(); const authStore = useAuthStore(); const user = computed(() => authStore.user)
 const contactInfo = ref('')
+const balanceLowNotifyEnabled = ref(false)
+const systemDefaultThreshold = ref(0)
 
 const WalletIcon = { render: () => h('svg', { fill: 'none', viewBox: '0 0 24 24', stroke: 'currentColor', 'stroke-width': '1.5' }, [h('path', { d: 'M21 12a2.25 2.25 0 00-2.25-2.25H15a3 3 0 11-6 0H5.25A2.25 2.25 0 003 12' })]) }
 const BoltIcon = { render: () => h('svg', { fill: 'none', viewBox: '0 0 24 24', stroke: 'currentColor', 'stroke-width': '1.5' }, [h('path', { d: 'm3.75 13.5 10.5-11.25L12 10.5h8.25L9.75 21.75 12 13.5H3.75z' })]) }
 const CalendarIcon = { render: () => h('svg', { fill: 'none', viewBox: '0 0 24 24', stroke: 'currentColor', 'stroke-width': '1.5' }, [h('path', { d: 'M6.75 3v2.25M17.25 3v2.25' })]) }
 
-onMounted(async () => { try { const s = await authAPI.getPublicSettings(); contactInfo.value = s.contact_info || '' } catch (error) { console.error('Failed to load contact info:', error) } })
+onMounted(async () => { try { const s = await authAPI.getPublicSettings(); contactInfo.value = s.contact_info || ''; balanceLowNotifyEnabled.value = s.balance_low_notify_enabled ?? false; systemDefaultThreshold.value = s.balance_low_notify_threshold ?? 0 } catch (error) { console.error('Failed to load settings:', error) } })
 const formatCurrency = (v: number) => `$${v.toFixed(2)}`
 </script>
\ No newline at end of file

frontend/src/views/user/UsageView.vue

@@ -192,7 +192,7 @@
           <template #cell-billing_mode="{ row }">
             <span class="inline-flex items-center rounded px-1.5 py-0.5 text-xs font-medium"
                   :class="getBillingModeBadgeClass(row.billing_mode)">
-              {{ getBillingModeLabel(row.billing_mode) }}
+              {{ getBillingModeLabel(row.billing_mode, t) }}
             </span>
           </template>
 
@@ -447,13 +447,21 @@
               <span class="text-gray-400">{{ t('admin.usage.outputCost') }}</span>
               <span class="font-medium text-white">${{ tooltipData.output_cost.toFixed(6) }}</span>
             </div>
-            <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
-              <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
-              <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
-            </div>
-            <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
-              <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
-              <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+            <!-- Token billing: show unit prices per 1M tokens -->
+            <template v-if="!tooltipData?.billing_mode || tooltipData.billing_mode === 'token'">
+              <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
+                <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+              <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
+                <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+            </template>
+            <!-- Per-request / image billing: show unit price -->
+            <div v-else class="flex items-center justify-between gap-4">
+              <span class="text-gray-400">{{ tooltipData.billing_mode === 'image' ? t('usage.imageUnitPrice') : t('usage.unitPrice') }}</span>
+              <span class="font-medium text-sky-300">${{ tooltipData.total_cost?.toFixed(6) || '0.000000' }}</span>
             </div>
             <div v-if="tooltipData && tooltipData.cache_creation_cost > 0" class="flex items-center justify-between gap-4">
               <span class="text-gray-400">{{ t('admin.usage.cacheCreationCost') }}</span>
@@ -516,6 +524,7 @@ import { formatCacheTokens, formatMultiplier } from '@/utils/formatters'
 import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
+import { getBillingModeLabel, getBillingModeBadgeClass } from '@/utils/billingMode'
 
 const { t } = useI18n()
 const appStore = useAppStore()
@@ -636,17 +645,6 @@ const getRequestTypeBadgeClass = (log: UsageLog): string => {
   return 'bg-amber-100 text-amber-800 dark:bg-amber-900 dark:text-amber-200'
 }
 
-const getBillingModeLabel = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return t('admin.usage.billingModePerRequest')
-  if (mode === 'image') return t('admin.usage.billingModeImage')
-  return t('admin.usage.billingModeToken')
-}
-
-const getBillingModeBadgeClass = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-200'
-  if (mode === 'image') return 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-200'
-  return 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300'
-}
 
 const getRequestTypeExportText = (log: UsageLog): string => {
   const requestType = resolveUsageRequestType(log)
@@ -858,7 +856,7 @@ const exportToCSV = async () => {
         formatReasoningEffort(log.reasoning_effort),
         log.inbound_endpoint || '',
         getRequestTypeExportText(log),
-        getBillingModeLabel(log.billing_mode),
+        getBillingModeLabel(log.billing_mode, t),
         log.input_tokens,
         log.output_tokens,
         log.cache_read_tokens,

frontend/src/views/user/UserOrdersView.vue

@@ -22,7 +22,7 @@
               <Icon name="x" size="sm" />
               <span>{{ t('payment.orders.cancel') }}</span>
             </button>
-            <button v-if="row.status === 'COMPLETED'" @click="openRefundDialog(row)" class="inline-flex items-center gap-1 rounded-md px-2 py-1 text-xs font-medium text-purple-600 hover:bg-purple-50 dark:text-purple-400 dark:hover:bg-purple-900/20">
+            <button v-if="canRequestRefund(row)" @click="openRefundDialog(row)" class="inline-flex items-center gap-1 rounded-md px-2 py-1 text-xs font-medium text-purple-600 hover:bg-purple-50 dark:text-purple-400 dark:hover:bg-purple-900/20">
               <Icon name="dollar" size="sm" />
               <span>{{ t('payment.orders.requestRefund') }}</span>
             </button>
@@ -102,6 +102,7 @@ const appStore = useAppStore()
 const loading = ref(false)
 const actionLoading = ref(false)
 const orders = ref<PaymentOrder[]>([])
+const refundEligibleProviders = ref<Set<string>>(new Set())
 const currentFilter = ref('')
 const cancelTargetId = ref<number | null>(null)
 const refundTarget = ref<PaymentOrder | null>(null)
@@ -171,5 +172,18 @@ async function confirmRefund() {
   }
 }
 
-onMounted(() => fetchOrders())
+function canRequestRefund(order: PaymentOrder): boolean {
+  if (order.status !== 'COMPLETED') return false
+  if (!order.provider_instance_id) return false
+  return refundEligibleProviders.value.has(order.provider_instance_id)
+}
+
+async function loadRefundEligibility() {
+  try {
+    const res = await paymentAPI.getRefundEligibleProviders()
+    refundEligibleProviders.value = new Set(res.data.provider_instance_ids || [])
+  } catch { /* ignore — default to hiding refund button */ }
+}
+
+onMounted(() => { fetchOrders(); loadRefundEligibility() })
 </script>