refactor(frontend): comprehensive split of large view files into modular components

- Split UsersView.vue into UserCreateModal, UserEditModal, UserApiKeysModal, etc.
- Split UsageView.vue into UsageStatsCards, UsageFilters, UsageTable, etc.
- Split DashboardView.vue into UserDashboardStats, UserDashboardCharts, etc.
- Split AccountsView.vue into AccountTableActions, AccountTableFilters, etc.
- Standardized TypeScript types across new components to resolve implicit 'any' and 'never[]' errors.
- Improved overall frontend maintainability and code clarity.

frontend/src/components/admin/account/AccountActionMenu.vue

@@ -0,0 +1,21 @@
+<template>
+  <Teleport to="body">
+    <div v-if="show && position" class="action-menu-content fixed z-[9999] w-52 overflow-hidden rounded-xl bg-white shadow-lg ring-1 ring-black/5 dark:bg-dark-800" :style="{ top: position.top + 'px', left: position.left + 'px' }">
+      <div class="py-1">
+        <template v-if="account">
+          <button @click="$emit('test', account); $emit('close')" class="flex w-full items-center gap-2 px-4 py-2 text-sm hover:bg-gray-100"><span class="text-green-500">▶</span> {{ t('admin.accounts.testConnection') }}</button>
+          <button @click="$emit('stats', account); $emit('close')" class="flex w-full items-center gap-2 px-4 py-2 text-sm hover:bg-gray-100"><span class="text-indigo-500">📊</span> {{ t('admin.accounts.viewStats') }}</button>
+          <template v-if="account.type === 'oauth' || account.type === 'setup-token'">
+            <button @click="$emit('reauth', account); $emit('close')" class="flex w-full items-center gap-2 px-4 py-2 text-sm hover:bg-gray-100 text-blue-600">🔗 {{ t('admin.accounts.reAuthorize') }}</button>
+            <button @click="$emit('refresh-token', account); $emit('close')" class="flex w-full items-center gap-2 px-4 py-2 text-sm hover:bg-gray-100 text-purple-600">🔄 {{ t('admin.accounts.refreshToken') }}</button>
+          </template>
+        </template>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+defineProps(['show', 'account', 'position']); defineEmits(['close', 'test', 'stats', 'reauth', 'refresh-token']); const { t } = useI18n()
+</script>

frontend/src/components/admin/account/AccountBulkActionsBar.vue

@@ -0,0 +1,14 @@
+<template>
+  <div v-if="selectedIds.length > 0" class="mb-4 flex items-center justify-between p-3 bg-primary-50 rounded-lg">
+    <span class="text-sm font-medium">{{ t('admin.accounts.bulkActions.selected', { count: selectedIds.length }) }}</span>
+    <div class="flex gap-2">
+      <button @click="$emit('delete')" class="btn btn-danger btn-sm">{{ t('admin.accounts.bulkActions.delete') }}</button>
+      <button @click="$emit('edit')" class="btn btn-primary btn-sm">{{ t('admin.accounts.bulkActions.edit') }}</button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+defineProps(['selectedIds']); defineEmits(['delete', 'edit']); const { t } = useI18n()
+</script>

frontend/src/components/admin/account/AccountTableActions.vue

@@ -0,0 +1,11 @@
+<template>
+  <div class="flex justify-end gap-3">
+    <button @click="$emit('refresh')" :disabled="loading" class="btn btn-secondary"><svg :class="['h-5 w-5', loading ? 'animate-spin' : '']" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0013.803-3.7M4.031 9.865a8.25 8.25 0 0113.803-3.7l3.181 3.182m0-4.991v4.99" /></svg></button>
+    <button @click="$emit('sync')" class="btn btn-secondary">Sync CRS</button>
+    <button @click="$emit('create')" class="btn btn-primary">{{ t('admin.accounts.createAccount') }}</button>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'; defineProps(['loading']); defineEmits(['refresh', 'sync', 'create']); const { t } = useI18n()
+</script>

frontend/src/components/admin/account/AccountTableFilters.vue

@@ -0,0 +1,16 @@
+<template>
+  <div class="flex flex-col gap-4 lg:flex-row lg:items-center lg:justify-between">
+    <div class="relative max-w-md flex-1"><input :value="searchQuery" type="text" :placeholder="t('admin.accounts.searchAccounts')" class="input" @input="$emit('update:searchQuery', ($event.target as HTMLInputElement).value)" /></div>
+    <div class="flex gap-3">
+      <Select v-model="filters.platform" :options="pOpts" @change="$emit('change')" />
+      <Select v-model="filters.status" :options="sOpts" @change="$emit('change')" />
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'; import { useI18n } from 'vue-i18n'; import Select from '@/components/common/Select.vue'
+defineProps(['searchQuery', 'filters']); defineEmits(['update:searchQuery', 'change']); const { t } = useI18n()
+const pOpts = computed(() => [{ value: '', label: t('admin.accounts.allPlatforms') }, { value: 'openai', label: 'OpenAI' }, { value: 'anthropic', label: 'Anthropic' }, { value: 'gemini', label: 'Gemini' }])
+const sOpts = computed(() => [{ value: '', label: t('admin.accounts.allStatus') }, { value: 'active', label: t('admin.accounts.status.active') }, { value: 'error', label: t('admin.accounts.status.error') }])
+</script>

frontend/src/components/admin/usage/UsageExportProgress.vue

@@ -0,0 +1,16 @@
+<template>
+  <ExportProgressDialog
+    :show="show"
+    :progress="progress"
+    :current="current"
+    :total="total"
+    :estimated-time="estimatedTime"
+    @cancel="$emit('cancel')"
+  />
+</template>
+
+<script setup lang="ts">
+import ExportProgressDialog from '@/components/common/ExportProgressDialog.vue'
+defineProps<{ show: boolean, progress: number, current: number, total: number, estimatedTime: string }>()
+defineEmits(['cancel'])
+</script>

frontend/src/components/admin/usage/UsageFilters.vue

@@ -0,0 +1,35 @@
+<template>
+  <div class="card p-6"><div class="flex flex-wrap items-end gap-4">
+    <div class="min-w-[200px] relative"><label class="input-label">{{ t('admin.usage.userFilter') }}</label>
+      <input v-model="userKW" type="text" class="input pr-8" :placeholder="t('admin.usage.searchUserPlaceholder')" @input="debounceSearch" @focus="showDD = true" />
+      <button v-if="modelValue.user_id" @click="clearUser" class="absolute right-2 top-9 text-gray-400">✕</button>
+      <div v-if="showDD && (results.length > 0 || userKW)" class="absolute z-50 mt-1 max-h-60 w-full overflow-auto rounded-lg border bg-white shadow-lg dark:bg-gray-800">
+        <button v-for="u in results" :key="u.id" @click="selectUser(u)" class="w-full px-4 py-2 text-left hover:bg-gray-100 dark:hover:bg-gray-700"><span>{{ u.email }}</span><span class="ml-2 text-xs text-gray-400">#{{ u.id }}</span></button>
+      </div>
+    </div>
+    <div class="min-w-[180px]"><label class="input-label">{{ t('usage.model') }}</label><Select v-model="filters.model" :options="mOpts" searchable @change="emitChange" /></div>
+    <div class="min-w-[150px]"><label class="input-label">{{ t('admin.usage.group') }}</label><Select v-model="filters.group_id" :options="gOpts" @change="emitChange" /></div>
+    <div><label class="input-label">{{ t('usage.timeRange') }}</label><DateRangePicker :start-date="startDate" :end-date="endDate" @update:startDate="$emit('update:startDate', $event)" @update:endDate="$emit('update:endDate', $event)" @change="emitChange" /></div>
+    <div class="ml-auto flex gap-3"><button @click="$emit('reset')" class="btn btn-secondary">{{ t('common.reset') }}</button><button @click="$emit('export')" :disabled="exporting" class="btn btn-primary">{{ t('usage.exportExcel') }}</button></div>
+  </div></div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted, onUnmounted, reactive } from 'vue'; import { useI18n } from 'vue-i18n'; import { adminAPI } from '@/api/admin'; import Select from '@/components/common/Select.vue'; import DateRangePicker from '@/components/common/DateRangePicker.vue'
+const props = defineProps(['modelValue', 'exporting', 'startDate', 'endDate']); const emit = defineEmits(['update:modelValue', 'update:startDate', 'update:endDate', 'change', 'reset', 'export'])
+const { t } = useI18n(); const filters = props.modelValue
+const userKW = ref(''); const results = ref<any[]>([]); const showDD = ref(false); let timeout: any = null
+const mOpts = ref([{ value: null, label: t('admin.usage.allModels') }]); const gOpts = ref([{ value: null, label: t('admin.usage.allGroups') }])
+const emitChange = () => emit('change')
+const debounceSearch = () => { clearTimeout(timeout); timeout = setTimeout(async () => { if(!userKW.value) { results.value = []; return }; try { results.value = await adminAPI.usage.searchUsers(userKW.value) } catch {} }, 300) }
+const selectUser = (u: any) => { userKW.value = u.email; showDD.value = false; filters.user_id = u.id; emitChange() }
+const clearUser = () => { userKW.value = ''; results.value = []; filters.user_id = undefined; emitChange() }
+onMounted(async () => {
+  try { const [gs, ms] = await Promise.all([adminAPI.groups.list(1, 1000), adminAPI.dashboard.getModelStats({ start_date: props.startDate, end_date: props.endDate })])
+    gOpts.value.push(...gs.items.map((g: any) => ({ value: g.id, label: g.name })))
+    const unique = new Set<string>(); ms.models?.forEach((s: any) => s.model && unique.add(s.model))
+    mOpts.value.push(...Array.from(unique).sort().map(m => ({ value: m, label: m })))
+  } catch {}
+  document.addEventListener('click', (e) => { if(!(e.target as HTMLElement).closest('.relative')) showDD.value = false })
+})
+</script>

frontend/src/components/admin/usage/UsageStatsCards.vue

@@ -0,0 +1,27 @@
+<template>
+  <div class="grid grid-cols-2 gap-4 lg:grid-cols-4">
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-blue-100 p-2 dark:bg-blue-900/30 text-blue-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" /></svg></div>
+      <div><p class="text-xs font-medium text-gray-500">{{ t('usage.totalRequests') }}</p><p class="text-xl font-bold">{{ stats?.total_requests?.toLocaleString() || '0' }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-amber-100 p-2 dark:bg-amber-900/30 text-amber-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="m21 7.5-9-5.25L3 7.5m18 0-9 5.25m9-5.25v9l-9 5.25M3 7.5l9 5.25M3 7.5v9l9 5.25m0-9v9" /></svg></div>
+      <div><p class="text-xs font-medium text-gray-500">{{ t('usage.totalTokens') }}</p><p class="text-xl font-bold">{{ formatTokens(stats?.total_tokens || 0) }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-green-100 p-2 dark:bg-green-900/30 text-green-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8c-1.657 0-3 .895-3 2s1.343 2 3 2 3 .895 3 2-1.343 2-3 2m0-8c1.11 0 2.08.402 2.599 1M12 8V7m0 1v8m0 0v1m0-1c-1.11 0-2.08-.402-2.599-1M21 12a9 9 0 11-18 0 9 9 0 0118 0z" /></svg></div>
+      <div><p class="text-xs font-medium text-gray-500">{{ t('usage.totalCost') }}</p><p class="text-xl font-bold text-green-600">${{ (stats?.total_actual_cost || 0).toFixed(4) }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-purple-100 p-2 dark:bg-purple-900/30 text-purple-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6v6h4.5m4.5 0a9 9 0 11-18 0 9 9 0 0118 0z" /></svg></div>
+      <div><p class="text-xs font-medium text-gray-500">{{ t('usage.avgDuration') }}</p><p class="text-xl font-bold">{{ formatDuration(stats?.average_duration_ms || 0) }}</p></div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'; import type { AdminUsageStatsResponse } from '@/api/admin/usage'
+defineProps<{ stats: AdminUsageStatsResponse | null }>(); const { t } = useI18n()
+const formatDuration = (ms: number) => ms < 1000 ? `${ms.toFixed(0)}ms` : `${(ms/1000).toFixed(2)}s`
+const formatTokens = (v: number) => { if (v >= 1e9) return (v/1e9).toFixed(2) + 'B'; if (v >= 1e6) return (v/1e6).toFixed(2) + 'M'; if (v >= 1e3) return (v/1e3).toFixed(2) + 'K'; return v.toLocaleString() }
+</script>

frontend/src/components/admin/usage/UsageTable.vue

@@ -0,0 +1,22 @@
+<template>
+  <div class="card overflow-hidden"><div class="overflow-auto">
+    <DataTable :columns="cols" :data="data" :loading="loading">
+      <template #cell-user="{ row }"><div class="text-sm"><span class="font-medium text-gray-900 dark:text-white">{{ row.user?.email || '-' }}</span><span class="ml-1 text-xs text-gray-400">#{{ row.user_id }}</span></div></template>
+      <template #cell-model="{ value }"><span class="font-medium">{{ value }}</span></template>
+      <template #cell-tokens="{ row }"><div class="text-sm">In: {{ row.input_tokens.toLocaleString() }} / Out: {{ row.output_tokens.toLocaleString() }}</div></template>
+      <template #cell-cost="{ row }"><span class="font-medium text-green-600">${{ row.actual_cost.toFixed(6) }}</span></template>
+      <template #cell-created_at="{ value }"><span class="text-sm text-gray-500">{{ formatDateTime(value) }}</span></template>
+      <template #empty><EmptyState :message="t('usage.noRecords')" /></template>
+    </DataTable>
+  </div></div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'; import { useI18n } from 'vue-i18n'; import { formatDateTime } from '@/utils/format'; import DataTable from '@/components/common/DataTable.vue'; import EmptyState from '@/components/common/EmptyState.vue'
+defineProps(['data', 'loading']); const { t } = useI18n()
+const cols = computed(() => [
+  { key: 'user', label: t('admin.usage.user') }, { key: 'model', label: t('usage.model'), sortable: true },
+  { key: 'tokens', label: t('usage.tokens') }, { key: 'cost', label: t('usage.cost') },
+  { key: 'created_at', label: t('usage.time'), sortable: true }
+])
+</script>

frontend/src/components/admin/user/UserAllowedGroupsModal.vue

@@ -0,0 +1,59 @@
+<template>
+  <BaseDialog :show="show" :title="t('admin.users.setAllowedGroups')" width="normal" @close="$emit('close')">
+    <div v-if="user" class="space-y-4">
+      <div class="flex items-center gap-3 rounded-xl bg-gray-50 p-4 dark:bg-dark-700">
+        <div class="flex h-10 w-10 items-center justify-center rounded-full bg-primary-100">
+          <span class="text-lg font-medium text-primary-700">{{ user.email.charAt(0).toUpperCase() }}</span>
+        </div>
+        <p class="font-medium text-gray-900 dark:text-white">{{ user.email }}</p>
+      </div>
+      <div v-if="loading" class="flex justify-center py-8"><svg class="h-8 w-8 animate-spin text-primary-500" fill="none" viewBox="0 0 24 24"><circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle><path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path></svg></div>
+      <div v-else>
+        <p class="mb-3 text-sm text-gray-600">{{ t('admin.users.allowedGroupsHint') }}</p>
+        <div class="max-h-64 space-y-2 overflow-y-auto">
+          <label v-for="group in groups" :key="group.id" class="flex cursor-pointer items-center gap-3 rounded-lg border border-gray-200 p-3 hover:bg-gray-50" :class="{'border-primary-300 bg-primary-50': selectedIds.includes(group.id)}">
+            <input type="checkbox" :value="group.id" v-model="selectedIds" class="h-4 w-4 rounded border-gray-300 text-primary-600" />
+            <div class="flex-1"><p class="font-medium text-gray-900">{{ group.name }}</p><p v-if="group.description" class="truncate text-sm text-gray-500">{{ group.description }}</p></div>
+            <div class="flex items-center gap-2"><span class="badge badge-gray text-xs">{{ group.platform }}</span><span v-if="group.is_exclusive" class="badge badge-purple text-xs">{{ t('admin.groups.exclusive') }}</span></div>
+          </label>
+        </div>
+        <div class="mt-4 border-t border-gray-200 pt-4">
+          <label class="flex cursor-pointer items-center gap-3 rounded-lg border border-gray-200 p-3 hover:bg-gray-50" :class="{'border-green-300 bg-green-50': selectedIds.length === 0}">
+            <input type="radio" :checked="selectedIds.length === 0" @change="selectedIds = []" class="h-4 w-4 border-gray-300 text-green-600" />
+            <div class="flex-1"><p class="font-medium text-gray-900">{{ t('admin.users.allowAllGroups') }}</p><p class="text-sm text-gray-500">{{ t('admin.users.allowAllGroupsHint') }}</p></div>
+          </label>
+        </div>
+      </div>
+    </div>
+    <template #footer>
+      <div class="flex justify-end gap-3">
+        <button @click="$emit('close')" class="btn btn-secondary">{{ t('common.cancel') }}</button>
+        <button @click="handleSave" :disabled="submitting" class="btn btn-primary">{{ submitting ? t('common.saving') : t('common.save') }}</button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminAPI } from '@/api/admin'
+import type { User, Group } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+
+const props = defineProps<{ show: boolean, user: User | null }>()
+const emit = defineEmits(['close', 'success']); const { t } = useI18n(); const appStore = useAppStore()
+
+const groups = ref<Group[]>([]); const selectedIds = ref<number[]>([]); const loading = ref(false); const submitting = ref(false)
+
+watch(() => props.show, (v) => { if(v && props.user) { selectedIds.value = props.user.allowed_groups || []; load() } })
+const load = async () => { loading.value = true; try { const res = await adminAPI.groups.list(1, 1000); groups.value = res.items.filter(g => g.subscription_type === 'standard' && g.status === 'active') } catch {} finally { loading.value = false } }
+const handleSave = async () => {
+  if (!props.user) return; submitting.value = true
+  try {
+    await adminAPI.users.update(props.user.id, { allowed_groups: selectedIds.value.length > 0 ? selectedIds.value : null })
+    appStore.showSuccess(t('admin.users.allowedGroupsUpdated')); emit('success'); emit('close')
+  } catch {} finally { submitting.value = false }
+}
+</script>

frontend/src/components/admin/user/UserApiKeysModal.vue

@@ -0,0 +1,47 @@
+<template>
+  <BaseDialog :show="show" :title="t('admin.users.userApiKeys')" width="wide" @close="$emit('close')">
+    <div v-if="user" class="space-y-4">
+      <div class="flex items-center gap-3 rounded-xl bg-gray-50 p-4 dark:bg-dark-700">
+        <div class="flex h-10 w-10 items-center justify-center rounded-full bg-primary-100 dark:bg-primary-900/30">
+          <span class="text-lg font-medium text-primary-700 dark:text-primary-300">{{ user.email.charAt(0).toUpperCase() }}</span>
+        </div>
+        <div><p class="font-medium text-gray-900 dark:text-white">{{ user.email }}</p><p class="text-sm text-gray-500 dark:text-dark-400">{{ user.username }}</p></div>
+      </div>
+      <div v-if="loading" class="flex justify-center py-8"><svg class="h-8 w-8 animate-spin text-primary-500" fill="none" viewBox="0 0 24 24"><circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle><path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path></svg></div>
+      <div v-else-if="apiKeys.length === 0" class="py-8 text-center"><p class="text-sm text-gray-500">{{ t('admin.users.noApiKeys') }}</p></div>
+      <div v-else class="max-h-96 space-y-3 overflow-y-auto">
+        <div v-for="key in apiKeys" :key="key.id" class="rounded-xl border border-gray-200 bg-white p-4 dark:border-dark-600 dark:bg-dark-800">
+          <div class="flex items-start justify-between">
+            <div class="min-w-0 flex-1">
+              <div class="mb-1 flex items-center gap-2"><span class="font-medium text-gray-900 dark:text-white">{{ key.name }}</span><span :class="['badge text-xs', key.status === 'active' ? 'badge-success' : 'badge-danger']">{{ key.status }}</span></div>
+              <p class="truncate font-mono text-sm text-gray-500">{{ key.key.substring(0, 20) }}...{{ key.key.substring(key.key.length - 8) }}</p>
+            </div>
+          </div>
+          <div class="mt-3 flex flex-wrap gap-4 text-xs text-gray-500">
+            <div class="flex items-center gap-1"><span>{{ t('admin.users.group') }}: {{ key.group?.name || t('admin.users.none') }}</span></div>
+            <div class="flex items-center gap-1"><span>{{ t('admin.users.columns.created') }}: {{ formatDateTime(key.created_at) }}</span></div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { adminAPI } from '@/api/admin'
+import { formatDateTime } from '@/utils/format'
+import type { User, ApiKey } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+
+const props = defineProps<{ show: boolean, user: User | null }>()
+defineEmits(['close']); const { t } = useI18n()
+const apiKeys = ref<ApiKey[]>([]); const loading = ref(false)
+
+watch(() => props.show, (v) => { if (v && props.user) load() })
+const load = async () => {
+  if (!props.user) return; loading.value = true
+  try { const res = await adminAPI.users.getUserApiKeys(props.user.id); apiKeys.value = res.items || [] } catch {} finally { loading.value = false }
+}
+</script>

frontend/src/components/admin/user/UserBalanceModal.vue

@@ -0,0 +1,46 @@
+<template>
+  <BaseDialog :show="show" :title="operation === 'add' ? t('admin.users.deposit') : t('admin.users.withdraw')" width="narrow" @close="$emit('close')">
+    <form v-if="user" id="balance-form" @submit.prevent="handleBalanceSubmit" class="space-y-5">
+      <div class="flex items-center gap-3 rounded-xl bg-gray-50 p-4 dark:bg-dark-700">
+        <div class="flex h-10 w-10 items-center justify-center rounded-full bg-primary-100"><span class="text-lg font-medium text-primary-700">{{ user.email.charAt(0).toUpperCase() }}</span></div>
+        <div class="flex-1"><p class="font-medium text-gray-900">{{ user.email }}</p><p class="text-sm text-gray-500">{{ t('admin.users.currentBalance') }}: ${{ user.balance.toFixed(2) }}</p></div>
+      </div>
+      <div>
+        <label class="input-label">{{ operation === 'add' ? t('admin.users.depositAmount') : t('admin.users.withdrawAmount') }}</label>
+        <div class="relative"><div class="absolute left-3 top-1/2 -translate-y-1/2 font-medium text-gray-500">$</div><input v-model.number="form.amount" type="number" step="0.01" min="0.01" required class="input pl-8" /></div>
+      </div>
+      <div><label class="input-label">{{ t('admin.users.notes') }}</label><textarea v-model="form.notes" rows="3" class="input"></textarea></div>
+      <div v-if="form.amount > 0" class="rounded-xl border border-blue-200 bg-blue-50 p-4"><div class="flex items-center justify-between text-sm"><span>{{ t('admin.users.newBalance') }}:</span><span class="font-bold">${{ calculateNewBalance().toFixed(2) }}</span></div></div>
+    </form>
+    <template #footer>
+      <div class="flex justify-end gap-3">
+        <button @click="$emit('close')" class="btn btn-secondary">{{ t('common.cancel') }}</button>
+        <button type="submit" form="balance-form" :disabled="submitting || !form.amount" class="btn" :class="operation === 'add' ? 'bg-emerald-600 text-white' : 'btn-danger'">{{ submitting ? t('common.saving') : t('common.confirm') }}</button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { reactive, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminAPI } from '@/api/admin'
+import type { User } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+
+const props = defineProps<{ show: boolean, user: User | null, operation: 'add' | 'subtract' }>()
+const emit = defineEmits(['close', 'success']); const { t } = useI18n(); const appStore = useAppStore()
+
+const submitting = ref(false); const form = reactive({ amount: 0, notes: '' })
+watch(() => props.show, (v) => { if(v) { form.amount = 0; form.notes = '' } })
+
+const calculateNewBalance = () => (props.user ? (props.operation === 'add' ? props.user.balance + form.amount : props.user.balance - form.amount) : 0)
+const handleBalanceSubmit = async () => {
+  if (!props.user) return; submitting.value = true
+  try {
+    await adminAPI.users.updateBalance(props.user.id, form.amount, props.operation, form.notes)
+    appStore.showSuccess(t('common.success')); emit('success'); emit('close')
+  } catch {} finally { submitting.value = false }
+}
+</script>

frontend/src/components/admin/user/UserCreateModal.vue

@@ -0,0 +1,118 @@
+<template>
+  <BaseDialog
+    :show="show"
+    :title="t('admin.users.createUser')"
+    width="normal"
+    @close="$emit('close')"
+  >
+    <form id="create-user-form" @submit.prevent="handleCreateUser" class="space-y-5">
+      <div>
+        <label class="input-label">{{ t('admin.users.email') }}</label>
+        <input
+          v-model="form.email"
+          type="email"
+          required
+          class="input"
+          :placeholder="t('admin.users.enterEmail')"
+        />
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.password') }}</label>
+        <div class="flex gap-2">
+          <div class="relative flex-1">
+            <input
+              v-model="form.password"
+              type="text"
+              required
+              class="input pr-10"
+              :placeholder="t('admin.users.enterPassword')"
+            />
+            <button
+              v-if="form.password"
+              type="button"
+              @click="copyPassword"
+              class="absolute right-2 top-1/2 -translate-y-1/2 rounded-lg p-1 transition-colors hover:bg-gray-100 dark:hover:bg-dark-700"
+              :class="passwordCopied ? 'text-green-500' : 'text-gray-400'"
+            >
+              <svg v-if="passwordCopied" class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="2">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7" />
+              </svg>
+              <svg v-else class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M15.666 3.888A2.25 2.25 0 0013.5 2.25h-3c-1.03 0-1.9.693-2.166 1.638m7.332 0c.055.194.084.4.084.612v0a.75.75 0 01-.75.75H9a.75.75 0 01-.75-.75v0c0-.212.03-.418.084-.612m7.332 0c.646.049 1.288.11 1.927.184 1.1.128 1.907 1.077 1.907 2.185V19.5a2.25 2.25 0 01-2.25 2.25H6.75A2.25 2.25 0 014.5 19.5V6.257c0-1.108.806-2.057 1.907-2.185a48.208 48.208 0 011.927-.184" />
+              </svg>
+            </button>
+          </div>
+          <button type="button" @click="generateRandomPassword" class="btn btn-secondary px-3">
+            <svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5">
+              <path stroke-linecap="round" stroke-linejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0013.803-3.7M4.031 9.865a8.25 8.25 0 0113.803-3.7l3.181 3.182m0-4.991v4.99" />
+            </svg>
+          </button>
+        </div>
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.username') }}</label>
+        <input v-model="form.username" type="text" class="input" :placeholder="t('admin.users.enterUsername')" />
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.notes') }}</label>
+        <textarea v-model="form.notes" rows="3" class="input" :placeholder="t('admin.users.enterNotes')"></textarea>
+      </div>
+      <div class="grid grid-cols-2 gap-4">
+        <div>
+          <label class="input-label">{{ t('admin.users.columns.balance') }}</label>
+          <input v-model.number="form.balance" type="number" step="any" class="input" />
+        </div>
+        <div>
+          <label class="input-label">{{ t('admin.users.columns.concurrency') }}</label>
+          <input v-model.number="form.concurrency" type="number" class="input" />
+        </div>
+      </div>
+    </form>
+    <template #footer>
+      <div class="flex justify-end gap-3">
+        <button @click="$emit('close')" type="button" class="btn btn-secondary">{{ t('common.cancel') }}</button>
+        <button type="submit" form="create-user-form" :disabled="submitting" class="btn btn-primary">
+          {{ submitting ? t('admin.users.creating') : t('common.create') }}
+        </button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, reactive, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { useClipboard } from '@/composables/useClipboard'
+import { adminAPI } from '@/api/admin'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+
+const props = defineProps<{ show: boolean }>()
+const emit = defineEmits(['close', 'success'])
+const { t } = useI18n(); const appStore = useAppStore(); const { copyToClipboard } = useClipboard()
+
+const submitting = ref(false); const passwordCopied = ref(false)
+const form = reactive({ email: '', password: '', username: '', notes: '', balance: 0, concurrency: 1 })
+
+watch(() => props.show, (v) => { if(v) { Object.assign(form, { email: '', password: '', username: '', notes: '', balance: 0, concurrency: 1 }); passwordCopied.value = false } })
+
+const generateRandomPassword = () => {
+  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789!@#$%^&*'
+  let p = ''; for (let i = 0; i < 16; i++) p += chars.charAt(Math.floor(Math.random() * chars.length))
+  form.password = p
+}
+const copyPassword = async () => {
+  if (form.password && await copyToClipboard(form.password, t('admin.users.passwordCopied'))) {
+    passwordCopied.value = true; setTimeout(() => passwordCopied.value = false, 2000)
+  }
+}
+const handleCreateUser = async () => {
+  submitting.value = true
+  try {
+    await adminAPI.users.create(form); appStore.showSuccess(t('admin.users.userCreated'))
+    emit('success'); emit('close')
+  } catch (e: any) {
+    appStore.showError(e.response?.data?.message || e.response?.data?.detail || t('admin.users.failedToCreate'))
+  } finally { submitting.value = false }
+}
+</script>

frontend/src/components/admin/user/UserEditModal.vue

@@ -0,0 +1,101 @@
+<template>
+  <BaseDialog
+    :show="show"
+    :title="t('admin.users.editUser')"
+    width="normal"
+    @close="$emit('close')"
+  >
+    <form v-if="user" id="edit-user-form" @submit.prevent="handleUpdateUser" class="space-y-5">
+      <div>
+        <label class="input-label">{{ t('admin.users.email') }}</label>
+        <input v-model="form.email" type="email" class="input" />
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.password') }}</label>
+        <div class="flex gap-2">
+          <div class="relative flex-1">
+            <input v-model="form.password" type="text" class="input pr-10" :placeholder="t('admin.users.enterNewPassword')" />
+            <button v-if="form.password" type="button" @click="copyPassword" class="absolute right-2 top-1/2 -translate-y-1/2 rounded-lg p-1 transition-colors hover:bg-gray-100 dark:hover:bg-dark-700" :class="passwordCopied ? 'text-green-500' : 'text-gray-400'">
+              <svg v-if="passwordCopied" class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7" /></svg>
+              <svg v-else class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5"><path stroke-linecap="round" stroke-linejoin="round" d="M15.666 3.888A2.25 2.25 0 0013.5 2.25h-3c-1.03 0-1.9.693-2.166 1.638m7.332 0c.055.194.084.4.084.612v0a.75.75 0 01-.75.75H9a.75.75 0 01-.75-.75v0c0-.212.03-.418.084-.612m7.332 0c.646.049 1.288.11 1.927.184 1.1.128 1.907 1.077 1.907 2.185V19.5a2.25 2.25 0 01-2.25 2.25H6.75A2.25 2.25 0 014.5 19.5V6.257c0-1.108.806-2.057 1.907-2.185a48.208 48.208 0 011.927-.184" /></svg>
+            </button>
+          </div>
+          <button type="button" @click="generatePassword" class="btn btn-secondary px-3">
+            <svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5"><path stroke-linecap="round" stroke-linejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0013.803-3.7M4.031 9.865a8.25 8.25 0 0113.803-3.7l3.181 3.182m0-4.991v4.99" /></svg>
+          </button>
+        </div>
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.username') }}</label>
+        <input v-model="form.username" type="text" class="input" />
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.notes') }}</label>
+        <textarea v-model="form.notes" rows="3" class="input"></textarea>
+      </div>
+      <div>
+        <label class="input-label">{{ t('admin.users.columns.concurrency') }}</label>
+        <input v-model.number="form.concurrency" type="number" class="input" />
+      </div>
+      <UserAttributeForm v-model="form.customAttributes" :user-id="user?.id" />
+    </form>
+    <template #footer>
+      <div class="flex justify-end gap-3">
+        <button @click="$emit('close')" type="button" class="btn btn-secondary">{{ t('common.cancel') }}</button>
+        <button type="submit" form="edit-user-form" :disabled="submitting" class="btn btn-primary">
+          {{ submitting ? t('admin.users.updating') : t('common.update') }}
+        </button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, reactive, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { useClipboard } from '@/composables/useClipboard'
+import { adminAPI } from '@/api/admin'
+import type { User, UserAttributeValuesMap } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+import UserAttributeForm from '@/components/user/UserAttributeForm.vue'
+
+const props = defineProps<{ show: boolean, user: User | null }>()
+const emit = defineEmits(['close', 'success'])
+const { t } = useI18n(); const appStore = useAppStore(); const { copyToClipboard } = useClipboard()
+
+const submitting = ref(false); const passwordCopied = ref(false)
+const form = reactive({ email: '', password: '', username: '', notes: '', concurrency: 1, customAttributes: {} as UserAttributeValuesMap })
+
+watch(() => props.user, (u) => {
+  if (u) {
+    Object.assign(form, { email: u.email, password: '', username: u.username || '', notes: u.notes || '', concurrency: u.concurrency, customAttributes: {} })
+    passwordCopied.value = false
+  }
+}, { immediate: true })
+
+const generatePassword = () => {
+  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789!@#$%^&*'
+  let p = ''; for (let i = 0; i < 16; i++) p += chars.charAt(Math.floor(Math.random() * chars.length))
+  form.password = p
+}
+const copyPassword = async () => {
+  if (form.password && await copyToClipboard(form.password, t('admin.users.passwordCopied'))) {
+    passwordCopied.value = true; setTimeout(() => passwordCopied.value = false, 2000)
+  }
+}
+const handleUpdateUser = async () => {
+  if (!props.user) return
+  submitting.value = true
+  try {
+    const data: any = { email: form.email, username: form.username, notes: form.notes, concurrency: form.concurrency }
+    if (form.password.trim()) data.password = form.password.trim()
+    await adminAPI.users.update(props.user.id, data)
+    if (Object.keys(form.customAttributes).length > 0) await adminAPI.userAttributes.updateUserAttributeValues(props.user.id, form.customAttributes)
+    appStore.showSuccess(t('admin.users.userUpdated'))
+    emit('success'); emit('close')
+  } catch (e: any) {
+    appStore.showError(e.response?.data?.detail || t('admin.users.failedToUpdate'))
+  } finally { submitting.value = false }
+}
+</script>

frontend/src/components/common/Input.vue

@@ -0,0 +1,103 @@
+<template>
+  <div class="w-full">
+    <label v-if="label" :for="id" class="input-label mb-1.5 block">
+      {{ label }}
+      <span v-if="required" class="text-red-500">*</span>
+    </label>
+    <div class="relative">
+      <!-- Prefix Icon Slot -->
+      <div
+        v-if="$slots.prefix"
+        class="pointer-events-none absolute inset-y-0 left-0 flex items-center pl-3.5 text-gray-400 dark:text-dark-400"
+      >
+        <slot name="prefix"></slot>
+      </div>
+
+      <input
+        :id="id"
+        ref="inputRef"
+        :type="type"
+        :value="modelValue"
+        :disabled="disabled"
+        :required="required"
+        :placeholder="placeholderText"
+        :autocomplete="autocomplete"
+        :readonly="readonly"
+        :class="[
+          'input w-full transition-all duration-200',
+          $slots.prefix ? 'pl-11' : '',
+          $slots.suffix ? 'pr-11' : '',
+          error ? 'input-error ring-2 ring-red-500/20' : '',
+          disabled ? 'cursor-not-allowed bg-gray-100 opacity-60 dark:bg-dark-900' : ''
+        ]"
+        @input="onInput"
+        @change="$emit('change', ($event.target as HTMLInputElement).value)"
+        @blur="$emit('blur', $event)"
+        @focus="$emit('focus', $event)"
+        @keyup.enter="$emit('enter', $event)"
+      />
+
+      <!-- Suffix Slot (e.g. Password Toggle or Clear Button) -->
+      <div
+        v-if="$slots.suffix"
+        class="absolute inset-y-0 right-0 flex items-center pr-3 text-gray-400 dark:text-dark-400"
+      >
+        <slot name="suffix"></slot>
+      </div>
+    </div>
+    <!-- Hint / Error Text -->
+    <p v-if="error" class="input-error-text mt-1.5">
+      {{ error }}
+    </p>
+    <p v-else-if="hint" class="input-hint mt-1.5">
+      {{ hint }}
+    </p>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+
+interface Props {
+  modelValue: string | number | null | undefined
+  type?: string
+  label?: string
+  placeholder?: string
+  disabled?: boolean
+  required?: boolean
+  readonly?: boolean
+  error?: string
+  hint?: string
+  id?: string
+  autocomplete?: string
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  type: 'text',
+  disabled: false,
+  required: false,
+  readonly: false
+})
+
+const emit = defineEmits<{
+  (e: 'update:modelValue', value: string): void
+  (e: 'change', value: string): void
+  (e: 'blur', event: FocusEvent): void
+  (e: 'focus', event: FocusEvent): void
+  (e: 'enter', event: KeyboardEvent): void
+}>()
+
+const inputRef = ref<HTMLInputElement | null>(null)
+const placeholderText = computed(() => props.placeholder || '')
+
+const onInput = (event: Event) => {
+  const value = (event.target as HTMLInputElement).value
+  emit('update:modelValue', value)
+}
+
+// Expose focus method
+defineExpose({
+  focus: () => inputRef.value?.focus(),
+  select: () => inputRef.value?.select()
+})
+</script>

frontend/src/components/common/Skeleton.vue

@@ -0,0 +1,46 @@
+<template>
+  <div
+    :class="[
+      'animate-pulse bg-gray-200 dark:bg-dark-700',
+      variant === 'circle' ? 'rounded-full' : 'rounded-lg',
+      customClass
+    ]"
+    :style="style"
+  ></div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+
+interface Props {
+  variant?: 'rect' | 'circle' | 'text'
+  width?: string | number
+  height?: string | number
+  class?: string
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  variant: 'rect',
+  width: '100%'
+})
+
+const customClass = computed(() => props.class || '')
+
+const style = computed(() => {
+  const s: Record<string, string> = {}
+  
+  if (props.width) {
+    s.width = typeof props.width === 'number' ? `${props.width}px` : props.width
+  }
+  
+  if (props.height) {
+    s.height = typeof props.height === 'number' ? `${props.height}px` : props.height
+  } else if (props.variant === 'text') {
+    s.height = '1em'
+    s.marginTop = '0.25em'
+    s.marginBottom = '0.25em'
+  }
+  
+  return s
+})
+</script>

frontend/src/components/common/TextArea.vue

@@ -0,0 +1,81 @@
+<template>
+  <div class="w-full">
+    <label v-if="label" :for="id" class="input-label mb-1.5 block">
+      {{ label }}
+      <span v-if="required" class="text-red-500">*</span>
+    </label>
+    <div class="relative">
+      <textarea
+        :id="id"
+        ref="textAreaRef"
+        :value="modelValue"
+        :disabled="disabled"
+        :required="required"
+        :placeholder="placeholderText"
+        :readonly="readonly"
+        :rows="rows"
+        :class="[
+          'input w-full min-h-[80px] transition-all duration-200 resize-y',
+          error ? 'input-error ring-2 ring-red-500/20' : '',
+          disabled ? 'cursor-not-allowed bg-gray-100 opacity-60 dark:bg-dark-900' : ''
+        ]"
+        @input="onInput"
+        @change="$emit('change', ($event.target as HTMLTextAreaElement).value)"
+        @blur="$emit('blur', $event)"
+        @focus="$emit('focus', $event)"
+      ></textarea>
+    </div>
+    <!-- Hint / Error Text -->
+    <p v-if="error" class="input-error-text mt-1.5">
+      {{ error }}
+    </p>
+    <p v-else-if="hint" class="input-hint mt-1.5">
+      {{ hint }}
+    </p>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+
+interface Props {
+  modelValue: string | null | undefined
+  label?: string
+  placeholder?: string
+  disabled?: boolean
+  required?: boolean
+  readonly?: boolean
+  error?: string
+  hint?: string
+  id?: string
+  rows?: number | string
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  disabled: false,
+  required: false,
+  readonly: false,
+  rows: 3
+})
+
+const emit = defineEmits<{
+  (e: 'update:modelValue', value: string): void
+  (e: 'change', value: string): void
+  (e: 'blur', event: FocusEvent): void
+  (e: 'focus', event: FocusEvent): void
+}>()
+
+const textAreaRef = ref<HTMLTextAreaElement | null>(null)
+const placeholderText = computed(() => props.placeholder || '')
+
+const onInput = (event: Event) => {
+  const value = (event.target as HTMLTextAreaElement).value
+  emit('update:modelValue', value)
+}
+
+// Expose focus method
+defineExpose({
+  focus: () => textAreaRef.value?.focus(),
+  select: () => textAreaRef.value?.select()
+})
+</script>

frontend/src/components/user/dashboard/UserDashboardCharts.vue

@@ -0,0 +1,31 @@
+<template>
+  <div class="space-y-6">
+    <div class="card p-4 flex flex-wrap items-center gap-4">
+      <DateRangePicker :start-date="startDate" :end-date="endDate" @update:startDate="$emit('update:startDate', $event)" @update:endDate="$emit('update:endDate', $event)" @change="$emit('dateRangeChange', $event)" />
+      <div class="ml-auto w-28"><Select :model-value="granularity" :options="[{value:'day', label:t('dashboard.day')}, {value:'hour', label:t('dashboard.hour')}]" @update:model-value="$emit('update:granularity', $event)" @change="$emit('granularityChange')" /></div>
+    </div>
+    <div class="grid grid-cols-1 gap-6 lg:grid-cols-2">
+      <div class="card p-4 min-h-[300px] relative"><div v-if="loading" class="absolute inset-0 flex items-center justify-center bg-white/50"><LoadingSpinner /></div>
+        <h3 class="mb-4 font-semibold">{{ t('dashboard.modelDistribution') }}</h3>
+        <div class="h-48"><Doughnut v-if="modelData" :data="modelData" :options="{maintainAspectRatio:false}" /></div>
+      </div>
+      <div class="card p-4 min-h-[300px] relative"><div v-if="loading" class="absolute inset-0 flex items-center justify-center bg-white/50"><LoadingSpinner /></div>
+        <h3 class="mb-4 font-semibold">{{ t('dashboard.tokenUsageTrend') }}</h3>
+        <div class="h-48"><Line v-if="trendData" :data="trendData" :options="{maintainAspectRatio:false}" /></div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'; import { useI18n } from 'vue-i18n'; import LoadingSpinner from '@/components/common/LoadingSpinner.vue'; import DateRangePicker from '@/components/common/DateRangePicker.vue'; import Select from '@/components/common/Select.vue'; import { Line, Doughnut } from 'vue-chartjs'
+import type { TrendDataPoint, ModelStat } from '@/types'
+import { Chart as ChartJS, CategoryScale, LinearScale, PointElement, LineElement, ArcElement, Title, Tooltip, Legend, Filler } from 'chart.js'
+ChartJS.register(CategoryScale, LinearScale, PointElement, LineElement, ArcElement, Title, Tooltip, Legend, Filler)
+
+const props = defineProps<{ loading: boolean, startDate: string, endDate: string, granularity: string, trend: TrendDataPoint[], models: ModelStat[] }>()
+defineEmits(['update:startDate', 'update:endDate', 'update:granularity', 'dateRangeChange', 'granularityChange'])
+const { t } = useI18n()
+const modelData = computed(() => !props.models?.length ? null : { labels: props.models.map((m:ModelStat) => m.model), datasets: [{ data: props.models.map((m:ModelStat) => m.total_tokens), backgroundColor: ['#3b82f6','#10b981','#f59e0b','#ef4444','#8b5cf6'] }] })
+const trendData = computed(() => !props.trend?.length ? null : { labels: props.trend.map((d:TrendDataPoint) => d.date), datasets: [{ label: 'Input', data: props.trend.map((d:TrendDataPoint) => d.input_tokens), borderColor: '#3b82f6', tension: 0.3 }] })
+</script>

frontend/src/components/user/dashboard/UserDashboardQuickActions.vue

@@ -0,0 +1,15 @@
+<template>
+  <div class="card p-6">
+    <h2 class="font-semibold mb-4">{{ t('dashboard.quickActions') }}</h2>
+    <div class="space-y-2">
+      <button @click="router.push('/keys')" class="w-full text-left p-3 hover:bg-gray-100 rounded-lg flex items-center gap-3"><div class="p-2 bg-blue-100 rounded-lg text-blue-600">🔑</div><span>{{ t('dashboard.createApiKey') }}</span></button>
+      <button @click="router.push('/usage')" class="w-full text-left p-3 hover:bg-gray-100 rounded-lg flex items-center gap-3"><div class="p-2 bg-green-100 rounded-lg text-green-600">📊</div><span>{{ t('dashboard.viewUsage') }}</span></button>
+      <button @click="router.push('/redeem')" class="w-full text-left p-3 hover:bg-gray-100 rounded-lg flex items-center gap-3"><div class="p-2 bg-amber-100 rounded-lg text-amber-600">🎁</div><span>{{ t('dashboard.redeemCode') }}</span></button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useRouter } from 'vue-router'; import { useI18n } from 'vue-i18n'
+const router = useRouter(); const { t } = useI18n()
+</script>

frontend/src/components/user/dashboard/UserDashboardRecentUsage.vue

@@ -0,0 +1,18 @@
+<template>
+  <div class="card p-6">
+    <div class="flex items-center justify-between mb-4"><h2 class="font-semibold">{{ t('dashboard.recentUsage') }}</h2></div>
+    <div v-if="loading" class="flex justify-center py-8"><LoadingSpinner /></div>
+    <div v-else-if="!data.length" class="text-center py-8 text-gray-500">{{ t('dashboard.noUsageRecords') }}</div>
+    <div v-else class="space-y-3">
+      <div v-for="l in data" :key="l.id" class="flex items-center justify-between p-3 bg-gray-50 rounded-lg">
+        <div><p class="text-sm font-medium">{{ l.model }}</p><p class="text-xs text-gray-400">{{ formatDateTime(l.created_at) }}</p></div>
+        <div class="text-right"><p class="text-sm font-bold text-green-600">${{ l.actual_cost.toFixed(4) }}</p></div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'; import LoadingSpinner from '@/components/common/LoadingSpinner.vue'; import { formatDateTime } from '@/utils/format'
+defineProps(['data', 'loading']); const { t } = useI18n()
+</script>

frontend/src/components/user/dashboard/UserDashboardStats.vue

@@ -0,0 +1,24 @@
+<template>
+  <div class="grid grid-cols-2 gap-4 lg:grid-cols-4">
+    <div v-if="!isSimple" class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-emerald-100 p-2 dark:bg-emerald-900/30 text-emerald-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path d="M2.25 18.75a60.07 60.07 0 0115.797 2.101c.727.198 1.453-.342 1.453-1.096V18.75" /></svg></div>
+      <div><p class="text-xs text-gray-500">{{ t('dashboard.balance') }}</p><p class="text-xl font-bold text-emerald-600">${{ balance.toFixed(2) }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-blue-100 p-2 dark:bg-blue-900/30 text-blue-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path d="M15.75 5.25a3 3 0 013 3" /></svg></div>
+      <div><p class="text-xs text-gray-500">{{ t('dashboard.apiKeys') }}</p><p class="text-xl font-bold">{{ stats?.total_api_keys || 0 }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-green-100 p-2 dark:bg-green-900/30 text-green-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path d="M3 13.125h2.25" /></svg></div>
+      <div><p class="text-xs text-gray-500">{{ t('dashboard.todayRequests') }}</p><p class="text-xl font-bold">{{ stats?.today_requests || 0 }}</p></div>
+    </div>
+    <div class="card p-4 flex items-center gap-3">
+      <div class="rounded-lg bg-purple-100 p-2 dark:bg-purple-900/30 text-purple-600"><svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path d="M12 6v12" /></svg></div>
+      <div><p class="text-xs text-gray-500">{{ t('dashboard.todayCost') }}</p><p class="text-xl font-bold text-purple-600">${{ (stats?.today_actual_cost || 0).toFixed(4) }}</p></div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'; defineProps(['stats', 'balance', 'isSimple']); const { t } = useI18n()
+</script>

frontend/src/components/user/profile/ProfileEditForm.vue

@@ -0,0 +1,74 @@
+<template>
+  <div class="card">
+    <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+      <h2 class="text-lg font-medium text-gray-900 dark:text-white">
+        {{ t('profile.editProfile') }}
+      </h2>
+    </div>
+    <div class="px-6 py-6">
+      <form @submit.prevent="handleUpdateProfile" class="space-y-4">
+        <div>
+          <label for="username" class="input-label">
+            {{ t('profile.username') }}
+          </label>
+          <input
+            id="username"
+            v-model="username"
+            type="text"
+            class="input"
+            :placeholder="t('profile.enterUsername')"
+          />
+        </div>
+
+        <div class="flex justify-end pt-4">
+          <button type="submit" :disabled="loading" class="btn btn-primary">
+            {{ loading ? t('profile.updating') : t('profile.updateProfile') }}
+          </button>
+        </div>
+      </form>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAuthStore } from '@/stores/auth'
+import { useAppStore } from '@/stores/app'
+import { userAPI } from '@/api'
+
+const props = defineProps<{
+  initialUsername: string
+}>()
+
+const { t } = useI18n()
+const authStore = useAuthStore()
+const appStore = useAppStore()
+
+const username = ref(props.initialUsername)
+const loading = ref(false)
+
+watch(() => props.initialUsername, (val) => {
+  username.value = val
+})
+
+const handleUpdateProfile = async () => {
+  if (!username.value.trim()) {
+    appStore.showError(t('profile.usernameRequired'))
+    return
+  }
+
+  loading.value = true
+  try {
+    const updatedUser = await userAPI.updateProfile({
+      username: username.value
+    })
+    authStore.user = updatedUser
+    appStore.showSuccess(t('profile.updateSuccess'))
+  } catch (error: any) {
+    appStore.showError(error.response?.data?.detail || t('profile.updateFailed'))
+  } finally {
+    loading.value = false
+  }
+}
+</script>

frontend/src/components/user/profile/ProfileInfoCard.vue

@@ -0,0 +1,81 @@
+<template>
+  <div class="card overflow-hidden">
+    <div
+      class="border-b border-gray-100 bg-gradient-to-r from-primary-500/10 to-primary-600/5 px-6 py-5 dark:border-dark-700 dark:from-primary-500/20 dark:to-primary-600/10"
+    >
+      <div class="flex items-center gap-4">
+        <!-- Avatar -->
+        <div
+          class="flex h-16 w-16 items-center justify-center rounded-2xl bg-gradient-to-br from-primary-500 to-primary-600 text-2xl font-bold text-white shadow-lg shadow-primary-500/20"
+        >
+          {{ user?.email?.charAt(0).toUpperCase() || 'U' }}
+        </div>
+        <div class="min-w-0 flex-1">
+          <h2 class="truncate text-lg font-semibold text-gray-900 dark:text-white">
+            {{ user?.email }}
+          </h2>
+          <div class="mt-1 flex items-center gap-2">
+            <span :class="['badge', user?.role === 'admin' ? 'badge-primary' : 'badge-gray']">
+              {{ user?.role === 'admin' ? t('profile.administrator') : t('profile.user') }}
+            </span>
+            <span
+              :class="['badge', user?.status === 'active' ? 'badge-success' : 'badge-danger']"
+            >
+              {{ user?.status }}
+            </span>
+          </div>
+        </div>
+      </div>
+    </div>
+    <div class="px-6 py-4">
+      <div class="space-y-3">
+        <div class="flex items-center gap-3 text-sm text-gray-600 dark:text-gray-400">
+          <svg
+            class="h-4 w-4 text-gray-400 dark:text-gray-500"
+            fill="none"
+            viewBox="0 0 24 24"
+            stroke="currentColor"
+            stroke-width="1.5"
+          >
+            <path
+              stroke-linecap="round"
+              stroke-linejoin="round"
+              d="M21.75 6.75v10.5a2.25 2.25 0 01-2.25 2.25h-15a2.25 2.25 0 01-2.25-2.25V6.75m19.5 0A2.25 2.25 0 0019.5 4.5h-15a2.25 2.25 0 00-2.25 2.25m19.5 0v.243a2.25 2.25 0 01-1.07 1.916l-7.5 4.615a2.25 2.25 0 01-2.36 0L3.32 8.91a2.25 2.25 0 01-1.07-1.916V6.75"
+            />
+          </svg>
+          <span class="truncate">{{ user?.email }}</span>
+        </div>
+        <div
+          v-if="user?.username"
+          class="flex items-center gap-3 text-sm text-gray-600 dark:text-gray-400"
+        >
+          <svg
+            class="h-4 w-4 text-gray-400 dark:text-gray-500"
+            fill="none"
+            viewBox="0 0 24 24"
+            stroke="currentColor"
+            stroke-width="1.5"
+          >
+            <path
+              stroke-linecap="round"
+              stroke-linejoin="round"
+              d="M15.75 6a3.75 3.75 0 11-7.5 0 3.75 3.75 0 017.5 0zM4.501 20.118a7.5 7.5 0 0114.998 0A17.933 17.933 0 0112 21.75c-2.676 0-5.216-.584-7.499-1.632z"
+            />
+          </svg>
+          <span class="truncate">{{ user.username }}</span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+import type { User } from '@/types'
+
+defineProps<{
+  user: User | null
+}>()
+
+const { t } = useI18n()
+</script>

frontend/src/components/user/profile/ProfilePasswordForm.vue

@@ -0,0 +1,109 @@
+<template>
+  <div class="card">
+    <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+      <h2 class="text-lg font-medium text-gray-900 dark:text-white">
+        {{ t('profile.changePassword') }}
+      </h2>
+    </div>
+    <div class="px-6 py-6">
+      <form @submit.prevent="handleChangePassword" class="space-y-4">
+        <div>
+          <label for="old_password" class="input-label">
+            {{ t('profile.currentPassword') }}
+          </label>
+          <input
+            id="old_password"
+            v-model="form.old_password"
+            type="password"
+            required
+            autocomplete="current-password"
+            class="input"
+          />
+        </div>
+
+        <div>
+          <label for="new_password" class="input-label">
+            {{ t('profile.newPassword') }}
+          </label>
+          <input
+            id="new_password"
+            v-model="form.new_password"
+            type="password"
+            required
+            autocomplete="new-password"
+            class="input"
+          />
+          <p class="input-hint">
+            {{ t('profile.passwordHint') }}
+          </p>
+        </div>
+
+        <div>
+          <label for="confirm_password" class="input-label">
+            {{ t('profile.confirmNewPassword') }}
+          </label>
+          <input
+            id="confirm_password"
+            v-model="form.confirm_password"
+            type="password"
+            required
+            autocomplete="new-password"
+            class="input"
+          />
+          <p
+            v-if="form.new_password && form.confirm_password && form.new_password !== form.confirm_password"
+            class="input-error-text"
+          >
+            {{ t('profile.passwordsNotMatch') }}
+          </p>
+        </div>
+
+        <div class="flex justify-end pt-4">
+          <button type="submit" :disabled="loading" class="btn btn-primary">
+            {{ loading ? t('profile.changingPassword') : t('profile.changePasswordButton') }}
+          </button>
+        </div>
+      </form>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { userAPI } from '@/api'
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const loading = ref(false)
+const form = ref({
+  old_password: '',
+  new_password: '',
+  confirm_password: ''
+})
+
+const handleChangePassword = async () => {
+  if (form.value.new_password !== form.value.confirm_password) {
+    appStore.showError(t('profile.passwordsNotMatch'))
+    return
+  }
+
+  if (form.value.new_password.length < 8) {
+    appStore.showError(t('profile.passwordTooShort'))
+    return
+  }
+
+  loading.value = true
+  try {
+    await userAPI.changePassword(form.value.old_password, form.value.new_password)
+    form.value = { old_password: '', new_password: '', confirm_password: '' }
+    appStore.showSuccess(t('profile.passwordChangeSuccess'))
+  } catch (error: any) {
+    appStore.showError(error.response?.data?.detail || t('profile.passwordChangeFailed'))
+  } finally {
+    loading.value = false
+  }
+}
+</script>

frontend/src/composables/useTableLoader.ts

@@ -0,0 +1,102 @@
+import { ref, reactive, onUnmounted } from 'vue'
+import { useDebounceFn } from '@vueuse/core'
+
+interface PaginationState {
+  page: number
+  page_size: number
+  total: number
+  pages: number
+}
+
+interface TableLoaderOptions<T, P> {
+  fetchFn: (page: number, pageSize: number, params: P, options?: { signal: AbortSignal }) => Promise<{
+    items: T[]
+    total: number
+    pages: number
+  }>
+  initialParams?: P
+  pageSize?: number
+  debounceMs?: number
+}
+
+export function useTableLoader<T, P extends Record<string, any>>(options: TableLoaderOptions<T, P>) {
+  const { fetchFn, initialParams, pageSize = 20, debounceMs = 300 } = options
+
+  const items = ref<T[]>([])
+  const loading = ref(false)
+  const params = reactive<P>({ ...(initialParams || {}) } as P)
+  const pagination = reactive<PaginationState>({
+    page: 1,
+    page_size: pageSize,
+    total: 0,
+    pages: 0
+  })
+
+  let abortController: AbortController | null = null
+
+  const isAbortError = (error: any) => {
+    return error?.name === 'AbortError' || error?.code === 'ERR_CANCELED'
+  }
+
+  const load = async () => {
+    if (abortController) {
+      abortController.abort()
+    }
+    abortController = new AbortController()
+    loading.value = true
+
+    try {
+      const response = await fetchFn(
+        pagination.page,
+        pagination.page_size,
+        params,
+        { signal: abortController.signal }
+      )
+      
+      items.value = response.items
+      pagination.total = response.total
+      pagination.pages = response.pages
+    } catch (error) {
+      if (!isAbortError(error)) {
+        throw error
+      }
+    } finally {
+      if (abortController?.signal.aborted === false) {
+        loading.value = false
+      }
+    }
+  }
+
+  const reload = () => {
+    pagination.page = 1
+    return load()
+  }
+
+  const debouncedLoad = useDebounceFn(reload, debounceMs)
+
+  const handlePageChange = (page: number) => {
+    pagination.page = page
+    load()
+  }
+
+  const handlePageSizeChange = (size: number) => {
+    pagination.page_size = size
+    reload()
+  }
+
+  onUnmounted(() => {
+    abortController?.abort()
+  })
+
+  return {
+    items,
+    loading,
+    params,
+    pagination,
+    load,
+    reload,
+    debouncedLoad,
+    handlePageChange,
+    handlePageSizeChange
+  }
+}