Merge pull request #434 from DuckyProject/feat/announcement-system-pr-upstream

feat(announcements): admin/user announcement system

frontend/src/api/index.ts

@@ -16,6 +16,7 @@ export { userAPI } from './user'
 export { redeemAPI, type RedeemHistoryItem } from './redeem'
 export { userGroupsAPI } from './groups'
 export { totpAPI } from './totp'
+export { default as announcementsAPI } from './announcements'
 
 // Admin APIs
 export { adminAPI } from './admin'

frontend/src/components/admin/announcements/AnnouncementReadStatusDialog.vue

+<template>
+  <BaseDialog
+    :show="show"
+    :title="t('admin.announcements.readStatus')"
+    width="extra-wide"
+    @close="handleClose"
+  >
+    <div class="space-y-4">
+      <div class="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+        <div class="flex-1">
+          <input
+            v-model="search"
+            type="text"
+            class="input"
+            :placeholder="t('admin.announcements.searchUsers')"
+            @input="handleSearch"
+          />
+        </div>
+        <button @click="load" :disabled="loading" class="btn btn-secondary" :title="t('common.refresh')">
+          <Icon name="refresh" size="md" :class="loading ? 'animate-spin' : ''" />
+        </button>
+      </div>
+
+      <DataTable :columns="columns" :data="items" :loading="loading">
+        <template #cell-email="{ value }">
+          <span class="font-medium text-gray-900 dark:text-white">{{ value }}</span>
+        </template>
+
+        <template #cell-balance="{ value }">
+          <span class="font-medium text-gray-900 dark:text-white">${{ Number(value ?? 0).toFixed(2) }}</span>
+        </template>
+
+        <template #cell-eligible="{ value }">
+          <span :class="['badge', value ? 'badge-success' : 'badge-gray']">
+            {{ value ? t('admin.announcements.eligible') : t('common.no') }}
+          </span>
+        </template>
+
+        <template #cell-read_at="{ value }">
+          <span class="text-sm text-gray-500 dark:text-dark-400">
+            {{ value ? formatDateTime(value) : t('admin.announcements.unread') }}
+          </span>
+        </template>
+      </DataTable>
+
+      <Pagination
+        v-if="pagination.total > 0"
+        :page="pagination.page"
+        :total="pagination.total"
+        :page-size="pagination.page_size"
+        @update:page="handlePageChange"
+        @update:pageSize="handlePageSizeChange"
+      />
+    </div>
+
+    <template #footer>
+      <div class="flex justify-end">
+        <button type="button" class="btn btn-secondary" @click="handleClose">{{ t('common.close') }}</button>
+      </div>
+    </template>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, reactive, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminAPI } from '@/api/admin'
+import { formatDateTime } from '@/utils/format'
+import type { AnnouncementUserReadStatus } from '@/types'
+import type { Column } from '@/components/common/types'
+
+import BaseDialog from '@/components/common/BaseDialog.vue'
+import DataTable from '@/components/common/DataTable.vue'
+import Pagination from '@/components/common/Pagination.vue'
+import Icon from '@/components/icons/Icon.vue'
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const props = defineProps<{
+  show: boolean
+  announcementId: number | null
+}>()
+
+const emit = defineEmits<{
+  (e: 'close'): void
+}>()
+
+const loading = ref(false)
+const search = ref('')
+
+const pagination = reactive({
+  page: 1,
+  page_size: 20,
+  total: 0,
+  pages: 0
+})
+
+const items = ref<AnnouncementUserReadStatus[]>([])
+
+const columns = computed<Column[]>(() => [
+  { key: 'email', label: t('common.email') },
+  { key: 'username', label: t('admin.users.columns.username') },
+  { key: 'balance', label: t('common.balance') },
+  { key: 'eligible', label: t('admin.announcements.eligible') },
+  { key: 'read_at', label: t('admin.announcements.readAt') }
+])
+
+let currentController: AbortController | null = null
+
+async function load() {
+  if (!props.show || !props.announcementId) return
+
+  if (currentController) currentController.abort()
+  currentController = new AbortController()
+
+  try {
+    loading.value = true
+    const res = await adminAPI.announcements.getReadStatus(
+      props.announcementId,
+      pagination.page,
+      pagination.page_size,
+      search.value
+    )
+
+    items.value = res.items
+    pagination.total = res.total
+    pagination.pages = res.pages
+    pagination.page = res.page
+    pagination.page_size = res.page_size
+  } catch (error: any) {
+    if (currentController.signal.aborted || error?.name === 'AbortError') return
+    console.error('Failed to load read status:', error)
+    appStore.showError(error.response?.data?.detail || t('admin.announcements.failedToLoadReadStatus'))
+  } finally {
+    loading.value = false
+  }
+}
+
+function handlePageChange(page: number) {
+  pagination.page = page
+  load()
+}
+
+function handlePageSizeChange(pageSize: number) {
+  pagination.page_size = pageSize
+  pagination.page = 1
+  load()
+}
+
+let searchDebounceTimer: number | null = null
+function handleSearch() {
+  if (searchDebounceTimer) window.clearTimeout(searchDebounceTimer)
+  searchDebounceTimer = window.setTimeout(() => {
+    pagination.page = 1
+    load()
+  }, 300)
+}
+
+function handleClose() {
+  emit('close')
+}
+
+watch(
+  () => props.show,
+  (v) => {
+    if (!v) return
+    pagination.page = 1
+    load()
+  }
+)
+
+watch(
+  () => props.announcementId,
+  () => {
+    if (!props.show) return
+    pagination.page = 1
+    load()
+  }
+)
+
+onMounted(() => {
+  // noop
+})
+</script>

frontend/src/components/admin/announcements/AnnouncementTargetingEditor.vue

+<template>
+  <div class="rounded-2xl border border-gray-200 bg-gray-50 p-4 dark:border-dark-700 dark:bg-dark-800/50">
+    <div class="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between">
+      <div>
+        <div class="text-sm font-medium text-gray-900 dark:text-white">
+          {{ t('admin.announcements.form.targetingMode') }}
+        </div>
+        <div class="mt-1 text-xs text-gray-500 dark:text-dark-400">
+          {{ mode === 'all' ? t('admin.announcements.form.targetingAll') : t('admin.announcements.form.targetingCustom') }}
+        </div>
+      </div>
+
+      <div class="flex items-center gap-3">
+        <label class="flex items-center gap-2 text-sm text-gray-700 dark:text-gray-300">
+          <input
+            type="radio"
+            name="announcement-targeting-mode"
+            value="all"
+            :checked="mode === 'all'"
+            @change="setMode('all')"
+            class="h-4 w-4"
+          />
+          {{ t('admin.announcements.form.targetingAll') }}
+        </label>
+        <label class="flex items-center gap-2 text-sm text-gray-700 dark:text-gray-300">
+          <input
+            type="radio"
+            name="announcement-targeting-mode"
+            value="custom"
+            :checked="mode === 'custom'"
+            @change="setMode('custom')"
+            class="h-4 w-4"
+          />
+          {{ t('admin.announcements.form.targetingCustom') }}
+        </label>
+      </div>
+    </div>
+
+    <div v-if="mode === 'custom'" class="mt-4 space-y-4">
+      <div class="flex items-center justify-between">
+        <div class="text-sm font-medium text-gray-900 dark:text-white">
+          OR
+          <span class="ml-1 text-xs font-normal text-gray-500 dark:text-dark-400">
+            ({{ anyOf.length }}/50)
+          </span>
+        </div>
+        <button
+          type="button"
+          class="btn btn-secondary"
+          :disabled="anyOf.length >= 50"
+          @click="addOrGroup"
+        >
+          <Icon name="plus" size="sm" class="mr-1" />
+          {{ t('admin.announcements.form.addOrGroup') }}
+        </button>
+      </div>
+
+      <div v-if="anyOf.length === 0" class="rounded-xl border border-dashed border-gray-300 p-4 text-sm text-gray-500 dark:border-dark-600 dark:text-dark-400">
+        {{ t('admin.announcements.form.targetingCustom') }}: {{ t('admin.announcements.form.addOrGroup') }}
+      </div>
+
+      <div
+        v-for="(group, groupIndex) in anyOf"
+        :key="groupIndex"
+        class="rounded-2xl border border-gray-200 bg-white p-4 shadow-sm dark:border-dark-700 dark:bg-dark-800"
+      >
+        <div class="flex items-start justify-between gap-3">
+          <div class="min-w-0">
+            <div class="text-sm font-medium text-gray-900 dark:text-white">
+              {{ t('admin.announcements.form.targetingCustom') }} #{{ groupIndex + 1 }}
+              <span class="ml-2 text-xs font-normal text-gray-500 dark:text-dark-400">AND ({{ (group.all_of?.length || 0) }}/50)</span>
+            </div>
+            <div class="mt-1 text-xs text-gray-500 dark:text-dark-400">
+              {{ t('admin.announcements.form.addAndCondition') }}
+            </div>
+          </div>
+
+          <button
+            type="button"
+            class="btn btn-secondary"
+            @click="removeOrGroup(groupIndex)"
+          >
+            <Icon name="trash" size="sm" class="mr-1" />
+            {{ t('common.delete') }}
+          </button>
+        </div>
+
+        <div class="mt-4 space-y-3">
+          <div
+            v-for="(cond, condIndex) in (group.all_of || [])"
+            :key="condIndex"
+            class="rounded-xl border border-gray-200 bg-gray-50 p-3 dark:border-dark-700 dark:bg-dark-900/30"
+          >
+            <div class="flex flex-col gap-3 md:flex-row md:items-end">
+              <div class="w-full md:w-52">
+                <label class="input-label">{{ t('admin.announcements.form.conditionType') }}</label>
+                <Select
+                  :model-value="cond.type"
+                  :options="conditionTypeOptions"
+                  @update:model-value="(v) => setConditionType(groupIndex, condIndex, v as any)"
+                />
+              </div>
+
+              <div v-if="cond.type === 'subscription'" class="flex-1">
+                <label class="input-label">{{ t('admin.announcements.form.selectPackages') }}</label>
+                <GroupSelector
+                  v-model="subscriptionSelections[groupIndex][condIndex]"
+                  :groups="groups"
+                />
+              </div>
+
+              <div v-else class="flex flex-1 flex-col gap-3 sm:flex-row">
+                <div class="w-full sm:w-44">
+                  <label class="input-label">{{ t('admin.announcements.form.operator') }}</label>
+                  <Select
+                    :model-value="cond.operator"
+                    :options="balanceOperatorOptions"
+                    @update:model-value="(v) => setOperator(groupIndex, condIndex, v as any)"
+                  />
+                </div>
+                <div class="w-full sm:flex-1">
+                  <label class="input-label">{{ t('admin.announcements.form.balanceValue') }}</label>
+                  <input
+                    :value="String(cond.value ?? '')"
+                    type="number"
+                    step="any"
+                    class="input"
+                    @input="(e) => setBalanceValue(groupIndex, condIndex, (e.target as HTMLInputElement).value)"
+                  />
+                </div>
+              </div>
+
+              <div class="flex justify-end">
+                <button
+                  type="button"
+                  class="btn btn-secondary"
+                  @click="removeAndCondition(groupIndex, condIndex)"
+                >
+                  <Icon name="trash" size="sm" class="mr-1" />
+                  {{ t('common.delete') }}
+                </button>
+              </div>
+            </div>
+          </div>
+
+          <div class="flex justify-end">
+            <button
+              type="button"
+              class="btn btn-secondary"
+              :disabled="(group.all_of?.length || 0) >= 50"
+              @click="addAndCondition(groupIndex)"
+            >
+              <Icon name="plus" size="sm" class="mr-1" />
+              {{ t('admin.announcements.form.addAndCondition') }}
+            </button>
+          </div>
+        </div>
+      </div>
+
+      <div v-if="validationError" class="rounded-xl border border-red-200 bg-red-50 p-3 text-sm text-red-700 dark:border-red-900/30 dark:bg-red-900/10 dark:text-red-300">
+        {{ validationError }}
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, reactive, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import type {
+  AdminGroup,
+  AnnouncementTargeting,
+  AnnouncementCondition,
+  AnnouncementConditionGroup,
+  AnnouncementConditionType,
+  AnnouncementOperator
+} from '@/types'
+
+import Select from '@/components/common/Select.vue'
+import GroupSelector from '@/components/common/GroupSelector.vue'
+import Icon from '@/components/icons/Icon.vue'
+
+const { t } = useI18n()
+
+const props = defineProps<{
+  modelValue: AnnouncementTargeting
+  groups: AdminGroup[]
+}>()
+
+const emit = defineEmits<{
+  (e: 'update:modelValue', value: AnnouncementTargeting): void
+}>()
+
+const anyOf = computed(() => props.modelValue?.any_of ?? [])
+
+type Mode = 'all' | 'custom'
+const mode = computed<Mode>(() => (anyOf.value.length === 0 ? 'all' : 'custom'))
+
+const conditionTypeOptions = computed(() => [
+  { value: 'subscription', label: t('admin.announcements.form.conditionSubscription') },
+  { value: 'balance', label: t('admin.announcements.form.conditionBalance') }
+])
+
+const balanceOperatorOptions = computed(() => [
+  { value: 'gt', label: t('admin.announcements.operators.gt') },
+  { value: 'gte', label: t('admin.announcements.operators.gte') },
+  { value: 'lt', label: t('admin.announcements.operators.lt') },
+  { value: 'lte', label: t('admin.announcements.operators.lte') },
+  { value: 'eq', label: t('admin.announcements.operators.eq') }
+])
+
+function setMode(next: Mode) {
+  if (next === 'all') {
+    emit('update:modelValue', { any_of: [] })
+    return
+  }
+  if (anyOf.value.length === 0) {
+    emit('update:modelValue', { any_of: [{ all_of: [defaultSubscriptionCondition()] }] })
+  }
+}
+
+function defaultSubscriptionCondition(): AnnouncementCondition {
+  return {
+    type: 'subscription' as AnnouncementConditionType,
+    operator: 'in' as AnnouncementOperator,
+    group_ids: []
+  }
+}
+
+function defaultBalanceCondition(): AnnouncementCondition {
+  return {
+    type: 'balance' as AnnouncementConditionType,
+    operator: 'gte' as AnnouncementOperator,
+    value: 0
+  }
+}
+
+type TargetingDraft = {
+  any_of: AnnouncementConditionGroup[]
+}
+
+function updateTargeting(mutator: (draft: TargetingDraft) => void) {
+  const draft: TargetingDraft = JSON.parse(JSON.stringify(props.modelValue ?? { any_of: [] }))
+  if (!draft.any_of) draft.any_of = []
+  mutator(draft)
+  emit('update:modelValue', draft)
+}
+
+function addOrGroup() {
+  updateTargeting((draft) => {
+    if (draft.any_of.length >= 50) return
+    draft.any_of.push({ all_of: [defaultSubscriptionCondition()] })
+  })
+}
+
+function removeOrGroup(groupIndex: number) {
+  updateTargeting((draft) => {
+    draft.any_of.splice(groupIndex, 1)
+  })
+}
+
+function addAndCondition(groupIndex: number) {
+  updateTargeting((draft) => {
+    const group = draft.any_of[groupIndex]
+    if (!group.all_of) group.all_of = []
+    if (group.all_of.length >= 50) return
+    group.all_of.push(defaultSubscriptionCondition())
+  })
+}
+
+function removeAndCondition(groupIndex: number, condIndex: number) {
+  updateTargeting((draft) => {
+    const group = draft.any_of[groupIndex]
+    if (!group?.all_of) return
+    group.all_of.splice(condIndex, 1)
+  })
+}
+
+function setConditionType(groupIndex: number, condIndex: number, nextType: AnnouncementConditionType) {
+  updateTargeting((draft) => {
+    const group = draft.any_of[groupIndex]
+    if (!group?.all_of) return
+
+    if (nextType === 'subscription') {
+      group.all_of[condIndex] = defaultSubscriptionCondition()
+    } else {
+      group.all_of[condIndex] = defaultBalanceCondition()
+    }
+  })
+}
+
+function setOperator(groupIndex: number, condIndex: number, op: AnnouncementOperator) {
+  updateTargeting((draft) => {
+    const group = draft.any_of[groupIndex]
+    if (!group?.all_of) return
+
+    const cond = group.all_of[condIndex]
+    if (!cond) return
+
+    cond.operator = op
+  })
+}
+
+function setBalanceValue(groupIndex: number, condIndex: number, raw: string) {
+  const n = raw === '' ? 0 : Number(raw)
+  updateTargeting((draft) => {
+    const group = draft.any_of[groupIndex]
+    if (!group?.all_of) return
+
+    const cond = group.all_of[condIndex]
+    if (!cond) return
+
+    cond.value = Number.isFinite(n) ? n : 0
+  })
+}
+
+// We keep group_ids selection in a parallel reactive map because GroupSelector is numeric list.
+// Then we mirror it back to targeting.group_ids via a watcher.
+const subscriptionSelections = reactive<Record<number, Record<number, number[]>>>({})
+
+function ensureSelectionPath(groupIndex: number, condIndex: number) {
+  if (!subscriptionSelections[groupIndex]) subscriptionSelections[groupIndex] = {}
+  if (!subscriptionSelections[groupIndex][condIndex]) subscriptionSelections[groupIndex][condIndex] = []
+}
+
+watch(
+  () => props.modelValue,
+  (v) => {
+    const groups = v?.any_of ?? []
+    for (let gi = 0; gi < groups.length; gi++) {
+      const allOf = groups[gi]?.all_of ?? []
+      for (let ci = 0; ci < allOf.length; ci++) {
+        const c = allOf[ci]
+        if (c?.type === 'subscription') {
+          ensureSelectionPath(gi, ci)
+          subscriptionSelections[gi][ci] = (c.group_ids ?? []).slice()
+        }
+      }
+    }
+  },
+  { immediate: true, deep: true }
+)
+
+watch(
+  () => subscriptionSelections,
+  () => {
+    // sync back to targeting
+    updateTargeting((draft) => {
+      const groups = draft.any_of ?? []
+      for (let gi = 0; gi < groups.length; gi++) {
+        const allOf = groups[gi]?.all_of ?? []
+        for (let ci = 0; ci < allOf.length; ci++) {
+          const c = allOf[ci]
+          if (c?.type === 'subscription') {
+            ensureSelectionPath(gi, ci)
+            c.operator = 'in' as AnnouncementOperator
+            c.group_ids = (subscriptionSelections[gi]?.[ci] ?? []).slice()
+          }
+        }
+      }
+    })
+  },
+  { deep: true }
+)
+
+const validationError = computed(() => {
+  if (mode.value !== 'custom') return ''
+
+  const groups = anyOf.value
+  if (groups.length === 0) return t('admin.announcements.form.addOrGroup')
+
+  if (groups.length > 50) return 'any_of > 50'
+
+  for (const g of groups) {
+    const allOf = g?.all_of ?? []
+    if (allOf.length === 0) return t('admin.announcements.form.addAndCondition')
+    if (allOf.length > 50) return 'all_of > 50'
+
+    for (const c of allOf) {
+      if (c.type === 'subscription') {
+        if (!c.group_ids || c.group_ids.length === 0) return t('admin.announcements.form.selectPackages')
+      }
+    }
+  }
+
+  return ''
+})
+</script>

frontend/src/components/layout/AppSidebar.vue

@@ -319,6 +319,21 @@ const ServerIcon = {
     )
 }
 
+const BellIcon = {
+  render: () =>
+    h(
+      'svg',
+      { fill: 'none', viewBox: '0 0 24 24', stroke: 'currentColor', 'stroke-width': '1.5' },
+      [
+        h('path', {
+          'stroke-linecap': 'round',
+          'stroke-linejoin': 'round',
+          d: 'M14.857 17.082a23.848 23.848 0 005.454-1.31A8.967 8.967 0 0118 9.75V9a6 6 0 10-12 0v.75a8.967 8.967 0 01-2.312 6.022c1.733.64 3.56 1.085 5.455 1.31m5.714 0a24.255 24.255 0 01-5.714 0m5.714 0a3 3 0 11-5.714 0'
+        })
+      ]
+    )
+}
+
 const TicketIcon = {
   render: () =>
     h(
@@ -418,6 +433,7 @@ const ChevronDoubleRightIcon = {
 const userNavItems = computed(() => {
   const items = [
     { path: '/dashboard', label: t('nav.dashboard'), icon: DashboardIcon },
+    { path: '/announcements', label: t('nav.announcements'), icon: BellIcon },
     { path: '/keys', label: t('nav.apiKeys'), icon: KeyIcon },
     { path: '/usage', label: t('nav.usage'), icon: ChartIcon, hideInSimpleMode: true },
     { path: '/subscriptions', label: t('nav.mySubscriptions'), icon: CreditCardIcon, hideInSimpleMode: true },
@@ -440,6 +456,7 @@ const userNavItems = computed(() => {
 // Personal navigation items (for admin's "My Account" section, without Dashboard)
 const personalNavItems = computed(() => {
   const items = [
+    { path: '/announcements', label: t('nav.announcements'), icon: BellIcon },
     { path: '/keys', label: t('nav.apiKeys'), icon: KeyIcon },
     { path: '/usage', label: t('nav.usage'), icon: ChartIcon, hideInSimpleMode: true },
     { path: '/subscriptions', label: t('nav.mySubscriptions'), icon: CreditCardIcon, hideInSimpleMode: true },
@@ -470,6 +487,7 @@ const adminNavItems = computed(() => {
     { path: '/admin/groups', label: t('nav.groups'), icon: FolderIcon, hideInSimpleMode: true },
     { path: '/admin/subscriptions', label: t('nav.subscriptions'), icon: CreditCardIcon, hideInSimpleMode: true },
     { path: '/admin/accounts', label: t('nav.accounts'), icon: GlobeIcon },
+    { path: '/admin/announcements', label: t('nav.announcements'), icon: BellIcon },
     { path: '/admin/proxies', label: t('nav.proxies'), icon: ServerIcon },
     { path: '/admin/redeem', label: t('nav.redeemCodes'), icon: TicketIcon, hideInSimpleMode: true },
     { path: '/admin/promo-codes', label: t('nav.promoCodes'), icon: GiftIcon, hideInSimpleMode: true },

frontend/src/i18n/locales/en.ts

@@ -187,6 +187,7 @@ export default {
   // Navigation
   nav: {
     dashboard: 'Dashboard',
+    announcements: 'Announcements',
     apiKeys: 'API Keys',
     usage: 'Usage',
     redeem: 'Redeem',
@@ -1953,6 +1954,73 @@ export default {
       }
     },
 
+    // Announcements
+    announcements: {
+      title: 'Announcements',
+      description: 'Create announcements and target by conditions',
+      createAnnouncement: 'Create Announcement',
+      editAnnouncement: 'Edit Announcement',
+      deleteAnnouncement: 'Delete Announcement',
+      searchAnnouncements: 'Search announcements...',
+      status: 'Status',
+      allStatus: 'All Status',
+      columns: {
+        title: 'Title',
+        status: 'Status',
+        targeting: 'Targeting',
+        timeRange: 'Schedule',
+        createdAt: 'Created At',
+        actions: 'Actions'
+      },
+      statusLabels: {
+        draft: 'Draft',
+        active: 'Active',
+        archived: 'Archived'
+      },
+      form: {
+        title: 'Title',
+        content: 'Content (Markdown supported)',
+        status: 'Status',
+        startsAt: 'Starts At',
+        endsAt: 'Ends At',
+        startsAtHint: 'Leave empty to start immediately',
+        endsAtHint: 'Leave empty to never expire',
+        targetingMode: 'Targeting',
+        targetingAll: 'All users',
+        targetingCustom: 'Custom rules',
+        addOrGroup: 'Add OR group',
+        addAndCondition: 'Add AND condition',
+        conditionType: 'Condition type',
+        conditionSubscription: 'Subscription',
+        conditionBalance: 'Balance',
+        operator: 'Operator',
+        balanceValue: 'Balance threshold',
+        selectPackages: 'Select packages'
+      },
+      operators: {
+        gt: '>',
+        gte: '≥',
+        lt: '<',
+        lte: '≤',
+        eq: '='
+      },
+      targetingSummaryAll: 'All users',
+      targetingSummaryCustom: 'Custom ({groups} groups)',
+      timeImmediate: 'Immediate',
+      timeNever: 'Never',
+      readStatus: 'Read Status',
+      eligible: 'Eligible',
+      readAt: 'Read at',
+      unread: 'Unread',
+      searchUsers: 'Search users...',
+      failedToLoad: 'Failed to load announcements',
+      failedToCreate: 'Failed to create announcement',
+      failedToUpdate: 'Failed to update announcement',
+      failedToDelete: 'Failed to delete announcement',
+      failedToLoadReadStatus: 'Failed to load read status',
+      deleteConfirm: 'Are you sure you want to delete this announcement? This action cannot be undone.'
+    },
+
     // Promo Codes
     promo: {
       title: 'Promo Code Management',
@@ -3065,6 +3133,21 @@ export default {
       'The administrator enabled the entry but has not configured a purchase URL. Please contact admin.'
   },
 
+  // Announcements Page
+  announcements: {
+    title: 'Announcements',
+    description: 'View system announcements',
+    unreadOnly: 'Show unread only',
+    markRead: 'Mark as read',
+    readAt: 'Read at',
+    read: 'Read',
+    unread: 'Unread',
+    startsAt: 'Starts at',
+    endsAt: 'Ends at',
+    empty: 'No announcements',
+    emptyUnread: 'No unread announcements'
+  },
+
   // User Subscriptions Page
   userSubscriptions: {
     title: 'My Subscriptions',

frontend/src/i18n/locales/zh.ts

@@ -184,6 +184,7 @@ export default {
   // Navigation
   nav: {
     dashboard: '仪表盘',
+    announcements: '公告',
     apiKeys: 'API 密钥',
     usage: '使用记录',
     redeem: '兑换',
@@ -2100,6 +2101,73 @@ export default {
       failedToDelete: '删除兑换码失败'
     },
 
+    // Announcements
+    announcements: {
+      title: '公告管理',
+      description: '创建公告并按条件投放',
+      createAnnouncement: '创建公告',
+      editAnnouncement: '编辑公告',
+      deleteAnnouncement: '删除公告',
+      searchAnnouncements: '搜索公告...',
+      status: '状态',
+      allStatus: '全部状态',
+      columns: {
+        title: '标题',
+        status: '状态',
+        targeting: '展示条件',
+        timeRange: '有效期',
+        createdAt: '创建时间',
+        actions: '操作'
+      },
+      statusLabels: {
+        draft: '草稿',
+        active: '展示中',
+        archived: '已归档'
+      },
+      form: {
+        title: '标题',
+        content: '内容（支持 Markdown）',
+        status: '状态',
+        startsAt: '开始时间',
+        endsAt: '结束时间',
+        startsAtHint: '留空表示立即生效',
+        endsAtHint: '留空表示永久生效',
+        targetingMode: '展示条件',
+        targetingAll: '所有用户',
+        targetingCustom: '按条件',
+        addOrGroup: '添加 OR 条件组',
+        addAndCondition: '添加 AND 条件',
+        conditionType: '条件类型',
+        conditionSubscription: '订阅套餐',
+        conditionBalance: '余额',
+        operator: '运算符',
+        balanceValue: '余额阈值',
+        selectPackages: '选择套餐'
+      },
+      operators: {
+        gt: '>',
+        gte: '≥',
+        lt: '<',
+        lte: '≤',
+        eq: '='
+      },
+      targetingSummaryAll: '全部用户',
+      targetingSummaryCustom: '自定义（{groups} 组）',
+      timeImmediate: '立即',
+      timeNever: '永久',
+      readStatus: '已读情况',
+      eligible: '符合条件',
+      readAt: '已读时间',
+      unread: '未读',
+      searchUsers: '搜索用户...',
+      failedToLoad: '加载公告失败',
+      failedToCreate: '创建公告失败',
+      failedToUpdate: '更新公告失败',
+      failedToDelete: '删除公告失败',
+      failedToLoadReadStatus: '加载已读情况失败',
+      deleteConfirm: '确定要删除该公告吗？此操作无法撤销。'
+    },
+
     // Promo Codes
     promo: {
       title: '优惠码管理',
@@ -3214,6 +3282,21 @@ export default {
     notConfiguredDesc: '管理员已开启入口，但尚未配置购买订阅链接，请联系管理员。'
   },
 
+  // Announcements Page
+  announcements: {
+    title: '公告',
+    description: '查看系统公告',
+    unreadOnly: '仅显示未读',
+    markRead: '标记已读',
+    readAt: '已读时间',
+    read: '已读',
+    unread: '未读',
+    startsAt: '开始时间',
+    endsAt: '结束时间',
+    empty: '暂无公告',
+    emptyUnread: '暂无未读公告'
+  },
+
   // User Subscriptions Page
   userSubscriptions: {
     title: '我的订阅',

frontend/src/router/index.ts

@@ -187,6 +187,18 @@ const routes: RouteRecordRaw[] = [
       descriptionKey: 'purchase.description'
     }
   },
+  {
+    path: '/announcements',
+    name: 'Announcements',
+    component: () => import('@/views/user/AnnouncementsView.vue'),
+    meta: {
+      requiresAuth: true,
+      requiresAdmin: false,
+      title: 'Announcements',
+      titleKey: 'announcements.title',
+      descriptionKey: 'announcements.description'
+    }
+  },
 
   // ==================== Admin Routes ====================
   {
@@ -265,6 +277,18 @@ const routes: RouteRecordRaw[] = [
       descriptionKey: 'admin.accounts.description'
     }
   },
+  {
+    path: '/admin/announcements',
+    name: 'AdminAnnouncements',
+    component: () => import('@/views/admin/AnnouncementsView.vue'),
+    meta: {
+      requiresAuth: true,
+      requiresAdmin: true,
+      title: 'Announcements',
+      titleKey: 'admin.announcements.title',
+      descriptionKey: 'admin.announcements.description'
+    }
+  },
   {
     path: '/admin/proxies',
     name: 'AdminProxies',

frontend/src/types/index.ts

@@ -129,6 +129,81 @@ export interface UpdateSubscriptionRequest {
   is_active?: boolean
 }
 
+// ==================== Announcement Types ====================
+
+export type AnnouncementStatus = 'draft' | 'active' | 'archived'
+
+export type AnnouncementConditionType = 'subscription' | 'balance'
+
+export type AnnouncementOperator = 'in' | 'gt' | 'gte' | 'lt' | 'lte' | 'eq'
+
+export interface AnnouncementCondition {
+  type: AnnouncementConditionType
+  operator: AnnouncementOperator
+  group_ids?: number[]
+  value?: number
+}
+
+export interface AnnouncementConditionGroup {
+  all_of?: AnnouncementCondition[]
+}
+
+export interface AnnouncementTargeting {
+  any_of?: AnnouncementConditionGroup[]
+}
+
+export interface Announcement {
+  id: number
+  title: string
+  content: string
+  status: AnnouncementStatus
+  targeting: AnnouncementTargeting
+  starts_at?: string
+  ends_at?: string
+  created_by?: number
+  updated_by?: number
+  created_at: string
+  updated_at: string
+}
+
+export interface UserAnnouncement {
+  id: number
+  title: string
+  content: string
+  starts_at?: string
+  ends_at?: string
+  read_at?: string
+  created_at: string
+  updated_at: string
+}
+
+export interface CreateAnnouncementRequest {
+  title: string
+  content: string
+  status?: AnnouncementStatus
+  targeting: AnnouncementTargeting
+  starts_at?: number
+  ends_at?: number
+}
+
+export interface UpdateAnnouncementRequest {
+  title?: string
+  content?: string
+  status?: AnnouncementStatus
+  targeting?: AnnouncementTargeting
+  starts_at?: number
+  ends_at?: number
+}
+
+export interface AnnouncementUserReadStatus {
+  user_id: number
+  email: string
+  username: string
+  balance: number
+  eligible: boolean
+  read_at?: string
+}
+
 // ==================== Proxy Node Types ====================
 
 export interface ProxyNode {

frontend/src/views/admin/AnnouncementsView.vue

+<template>
+  <AppLayout>
+    <TablePageLayout>
+      <template #actions>
+        <div class="flex justify-end gap-3">
+          <button
+            @click="loadAnnouncements"
+            :disabled="loading"
+            class="btn btn-secondary"
+            :title="t('common.refresh')"
+          >
+            <Icon name="refresh" size="md" :class="loading ? 'animate-spin' : ''" />
+          </button>
+          <button @click="openCreateDialog" class="btn btn-primary">
+            <Icon name="plus" size="md" class="mr-1" />
+            {{ t('admin.announcements.createAnnouncement') }}
+          </button>
+        </div>
+      </template>
+
+      <template #filters>
+        <div class="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
+          <div class="max-w-md flex-1">
+            <input
+              v-model="searchQuery"
+              type="text"
+              :placeholder="t('admin.announcements.searchAnnouncements')"
+              class="input"
+              @input="handleSearch"
+            />
+          </div>
+          <div class="flex gap-2">
+            <Select
+              v-model="filters.status"
+              :options="statusFilterOptions"
+              class="w-40"
+              @change="handleStatusChange"
+            />
+          </div>
+        </div>
+      </template>
+
+      <template #table>
+        <DataTable :columns="columns" :data="announcements" :loading="loading">
+          <template #cell-title="{ value, row }">
+            <div class="min-w-0">
+              <div class="flex items-center gap-2">
+                <span class="truncate font-medium text-gray-900 dark:text-white">{{ value }}</span>
+              </div>
+              <div class="mt-1 flex items-center gap-2 text-xs text-gray-500 dark:text-dark-400">
+                <span>#{{ row.id }}</span>
+                <span class="text-gray-300 dark:text-dark-700">·</span>
+                <span>{{ formatDateTime(row.created_at) }}</span>
+              </div>
+            </div>
+          </template>
+
+          <template #cell-status="{ value }">
+            <span
+              :class="[
+                'badge',
+                value === 'active'
+                  ? 'badge-success'
+                  : value === 'draft'
+                    ? 'badge-gray'
+                    : 'badge-warning'
+              ]"
+            >
+              {{ statusLabel(value) }}
+            </span>
+          </template>
+
+          <template #cell-targeting="{ row }">
+            <span class="text-sm text-gray-600 dark:text-gray-300">
+              {{ targetingSummary(row.targeting) }}
+            </span>
+          </template>
+
+          <template #cell-timeRange="{ row }">
+            <div class="text-sm text-gray-600 dark:text-gray-300">
+              <div>
+                <span class="font-medium">{{ t('admin.announcements.form.startsAt') }}:</span>
+                <span class="ml-1">{{ row.starts_at ? formatDateTime(row.starts_at) : t('admin.announcements.timeImmediate') }}</span>
+              </div>
+              <div class="mt-0.5">
+                <span class="font-medium">{{ t('admin.announcements.form.endsAt') }}:</span>
+                <span class="ml-1">{{ row.ends_at ? formatDateTime(row.ends_at) : t('admin.announcements.timeNever') }}</span>
+              </div>
+            </div>
+          </template>
+
+          <template #cell-createdAt="{ value }">
+            <span class="text-sm text-gray-500 dark:text-dark-400">{{ formatDateTime(value) }}</span>
+          </template>
+
+          <template #cell-actions="{ row }">
+            <div class="flex items-center space-x-1">
+              <button
+                @click="openReadStatus(row)"
+                class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400"
+                :title="t('admin.announcements.readStatus')"
+              >
+                <Icon name="eye" size="sm" />
+              </button>
+              <button
+                @click="openEditDialog(row)"
+                class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-gray-100 hover:text-gray-700 dark:hover:bg-dark-600 dark:hover:text-gray-300"
+                :title="t('common.edit')"
+              >
+                <Icon name="edit" size="sm" />
+              </button>
+              <button
+                @click="handleDelete(row)"
+                class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400"
+                :title="t('common.delete')"
+              >
+                <Icon name="trash" size="sm" />
+              </button>
+            </div>
+          </template>
+
+          <template #empty>
+            <EmptyState
+              :title="t('empty.noData')"
+              :description="t('admin.announcements.failedToLoad')"
+              :action-text="t('admin.announcements.createAnnouncement')"
+              @action="openCreateDialog"
+            />
+          </template>
+        </DataTable>
+      </template>
+
+      <template #pagination>
+        <Pagination
+          v-if="pagination.total > 0"
+          :page="pagination.page"
+          :total="pagination.total"
+          :page-size="pagination.page_size"
+          @update:page="handlePageChange"
+          @update:pageSize="handlePageSizeChange"
+        />
+      </template>
+    </TablePageLayout>
+
+    <!-- Create/Edit Dialog -->
+    <BaseDialog
+      :show="showEditDialog"
+      :title="isEditing ? t('admin.announcements.editAnnouncement') : t('admin.announcements.createAnnouncement')"
+      width="wide"
+      @close="closeEdit"
+    >
+      <form id="announcement-form" @submit.prevent="handleSave" class="space-y-4">
+        <div>
+          <label class="input-label">{{ t('admin.announcements.form.title') }}</label>
+          <input v-model="form.title" type="text" class="input" required />
+        </div>
+
+        <div>
+          <label class="input-label">{{ t('admin.announcements.form.content') }}</label>
+          <textarea v-model="form.content" rows="6" class="input" required></textarea>
+        </div>
+
+        <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
+          <div>
+            <label class="input-label">{{ t('admin.announcements.form.status') }}</label>
+            <Select v-model="form.status" :options="statusOptions" />
+          </div>
+          <div></div>
+        </div>
+
+        <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
+          <div>
+            <label class="input-label">{{ t('admin.announcements.form.startsAt') }}</label>
+            <input v-model="form.starts_at_str" type="datetime-local" class="input" />
+            <p class="input-hint">{{ t('admin.announcements.form.startsAtHint') }}</p>
+          </div>
+          <div>
+            <label class="input-label">{{ t('admin.announcements.form.endsAt') }}</label>
+            <input v-model="form.ends_at_str" type="datetime-local" class="input" />
+            <p class="input-hint">{{ t('admin.announcements.form.endsAtHint') }}</p>
+          </div>
+        </div>
+
+        <AnnouncementTargetingEditor
+          v-model="form.targeting"
+          :groups="subscriptionGroups"
+        />
+      </form>
+
+      <template #footer>
+        <div class="flex justify-end gap-3">
+          <button type="button" @click="closeEdit" class="btn btn-secondary">
+            {{ t('common.cancel') }}
+          </button>
+          <button type="submit" form="announcement-form" :disabled="saving" class="btn btn-primary">
+            {{ saving ? t('common.saving') : t('common.save') }}
+          </button>
+        </div>
+      </template>
+    </BaseDialog>
+
+    <!-- Delete Confirmation -->
+    <ConfirmDialog
+      :show="showDeleteDialog"
+      :title="t('admin.announcements.deleteAnnouncement')"
+      :message="t('admin.announcements.deleteConfirm')"
+      :confirm-text="t('common.delete')"
+      :cancel-text="t('common.cancel')"
+      danger
+      @confirm="confirmDelete"
+      @cancel="showDeleteDialog = false"
+    />
+
+    <!-- Read Status Dialog -->
+    <AnnouncementReadStatusDialog
+      :show="showReadStatusDialog"
+      :announcement-id="readStatusAnnouncementId"
+      @close="showReadStatusDialog = false"
+    />
+  </AppLayout>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, reactive, ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminAPI } from '@/api/admin'
+import { formatDateTime, formatDateTimeLocalInput, parseDateTimeLocalInput } from '@/utils/format'
+import type { AdminGroup, Announcement, AnnouncementTargeting } from '@/types'
+import type { Column } from '@/components/common/types'
+
+import AppLayout from '@/components/layout/AppLayout.vue'
+import TablePageLayout from '@/components/layout/TablePageLayout.vue'
+import DataTable from '@/components/common/DataTable.vue'
+import Pagination from '@/components/common/Pagination.vue'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+import ConfirmDialog from '@/components/common/ConfirmDialog.vue'
+import Select from '@/components/common/Select.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
+import Icon from '@/components/icons/Icon.vue'
+
+import AnnouncementTargetingEditor from '@/components/admin/announcements/AnnouncementTargetingEditor.vue'
+import AnnouncementReadStatusDialog from '@/components/admin/announcements/AnnouncementReadStatusDialog.vue'
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const announcements = ref<Announcement[]>([])
+const loading = ref(false)
+
+const filters = reactive({
+  status: '',
+})
+const searchQuery = ref('')
+
+const pagination = reactive({
+  page: 1,
+  page_size: 20,
+  total: 0,
+  pages: 0
+})
+
+const statusFilterOptions = computed(() => [
+  { value: '', label: t('admin.announcements.allStatus') },
+  { value: 'draft', label: t('admin.announcements.statusLabels.draft') },
+  { value: 'active', label: t('admin.announcements.statusLabels.active') },
+  { value: 'archived', label: t('admin.announcements.statusLabels.archived') }
+])
+
+const statusOptions = computed(() => [
+  { value: 'draft', label: t('admin.announcements.statusLabels.draft') },
+  { value: 'active', label: t('admin.announcements.statusLabels.active') },
+  { value: 'archived', label: t('admin.announcements.statusLabels.archived') }
+])
+
+const columns = computed<Column[]>(() => [
+  { key: 'title', label: t('admin.announcements.columns.title') },
+  { key: 'status', label: t('admin.announcements.columns.status') },
+  { key: 'targeting', label: t('admin.announcements.columns.targeting') },
+  { key: 'timeRange', label: t('admin.announcements.columns.timeRange') },
+  { key: 'createdAt', label: t('admin.announcements.columns.createdAt') },
+  { key: 'actions', label: t('admin.announcements.columns.actions') }
+])
+
+const statusLabel = (status: string) => {
+  if (status === 'draft') return t('admin.announcements.statusLabels.draft')
+  if (status === 'active') return t('admin.announcements.statusLabels.active')
+  if (status === 'archived') return t('admin.announcements.statusLabels.archived')
+  return status
+}
+
+const targetingSummary = (targeting: AnnouncementTargeting) => {
+  const anyOf = targeting?.any_of ?? []
+  if (!anyOf || anyOf.length === 0) return t('admin.announcements.targetingSummaryAll')
+  return t('admin.announcements.targetingSummaryCustom', { groups: anyOf.length })
+}
+
+// ===== CRUD / list =====
+let currentController: AbortController | null = null
+
+async function loadAnnouncements() {
+  if (currentController) currentController.abort()
+  currentController = new AbortController()
+
+  try {
+    loading.value = true
+    const res = await adminAPI.announcements.list(pagination.page, pagination.page_size, {
+      status: filters.status || undefined,
+      search: searchQuery.value || undefined
+    })
+
+    announcements.value = res.items
+    pagination.total = res.total
+    pagination.pages = res.pages
+    pagination.page = res.page
+    pagination.page_size = res.page_size
+  } catch (error: any) {
+    if (currentController.signal.aborted || error?.name === 'AbortError') return
+    console.error('Error loading announcements:', error)
+    appStore.showError(error.response?.data?.detail || t('admin.announcements.failedToLoad'))
+  } finally {
+    loading.value = false
+  }
+}
+
+function handlePageChange(page: number) {
+  pagination.page = page
+  loadAnnouncements()
+}
+
+function handlePageSizeChange(pageSize: number) {
+  pagination.page_size = pageSize
+  pagination.page = 1
+  loadAnnouncements()
+}
+
+function handleStatusChange() {
+  pagination.page = 1
+  loadAnnouncements()
+}
+
+let searchDebounceTimer: number | null = null
+function handleSearch() {
+  if (searchDebounceTimer) window.clearTimeout(searchDebounceTimer)
+  searchDebounceTimer = window.setTimeout(() => {
+    pagination.page = 1
+    loadAnnouncements()
+  }, 300)
+}
+
+// ===== Create/Edit dialog =====
+const showEditDialog = ref(false)
+const saving = ref(false)
+const editingAnnouncement = ref<Announcement | null>(null)
+
+const isEditing = computed(() => !!editingAnnouncement.value)
+
+const form = reactive({
+  title: '',
+  content: '',
+  status: 'draft',
+  starts_at_str: '',
+  ends_at_str: '',
+  targeting: { any_of: [] } as AnnouncementTargeting
+})
+
+const subscriptionGroups = ref<AdminGroup[]>([])
+
+async function loadSubscriptionGroups() {
+  try {
+    const all = await adminAPI.groups.getAll()
+    subscriptionGroups.value = (all || []).filter((g) => g.subscription_type === 'subscription')
+  } catch (error: any) {
+    console.error('Error loading groups:', error)
+    // not fatal
+  }
+}
+
+function resetForm() {
+  form.title = ''
+  form.content = ''
+  form.status = 'draft'
+  form.starts_at_str = ''
+  form.ends_at_str = ''
+  form.targeting = { any_of: [] }
+}
+
+function fillFormFromAnnouncement(a: Announcement) {
+  form.title = a.title
+  form.content = a.content
+  form.status = a.status
+
+  // Backend returns RFC3339 strings
+  form.starts_at_str = a.starts_at ? formatDateTimeLocalInput(Math.floor(new Date(a.starts_at).getTime() / 1000)) : ''
+  form.ends_at_str = a.ends_at ? formatDateTimeLocalInput(Math.floor(new Date(a.ends_at).getTime() / 1000)) : ''
+
+  form.targeting = a.targeting ?? { any_of: [] }
+}
+
+function openCreateDialog() {
+  editingAnnouncement.value = null
+  resetForm()
+  showEditDialog.value = true
+}
+
+function openEditDialog(row: Announcement) {
+  editingAnnouncement.value = row
+  fillFormFromAnnouncement(row)
+  showEditDialog.value = true
+}
+
+function closeEdit() {
+  showEditDialog.value = false
+  editingAnnouncement.value = null
+}
+
+function buildCreatePayload() {
+  const startsAt = parseDateTimeLocalInput(form.starts_at_str)
+  const endsAt = parseDateTimeLocalInput(form.ends_at_str)
+
+  return {
+    title: form.title,
+    content: form.content,
+    status: form.status as any,
+    targeting: form.targeting,
+    starts_at: startsAt ?? undefined,
+    ends_at: endsAt ?? undefined
+  }
+}
+
+function buildUpdatePayload(original: Announcement) {
+  const payload: any = {}
+
+  if (form.title !== original.title) payload.title = form.title
+  if (form.content !== original.content) payload.content = form.content
+  if (form.status !== original.status) payload.status = form.status
+
+  // starts_at / ends_at: distinguish unchanged vs clear(0) vs set
+  const originalStarts = original.starts_at ? Math.floor(new Date(original.starts_at).getTime() / 1000) : null
+  const originalEnds = original.ends_at ? Math.floor(new Date(original.ends_at).getTime() / 1000) : null
+
+  const newStarts = parseDateTimeLocalInput(form.starts_at_str)
+  const newEnds = parseDateTimeLocalInput(form.ends_at_str)
+
+  if (newStarts !== originalStarts) {
+    payload.starts_at = newStarts === null ? 0 : newStarts
+  }
+  if (newEnds !== originalEnds) {
+    payload.ends_at = newEnds === null ? 0 : newEnds
+  }
+
+  // targeting: do shallow compare by JSON
+  if (JSON.stringify(form.targeting ?? {}) !== JSON.stringify(original.targeting ?? {})) {
+    payload.targeting = form.targeting
+  }
+
+  return payload
+}
+
+async function handleSave() {
+  // Frontend validation for targeting (to avoid ANNOUNCEMENT_INVALID_TARGET)
+  const anyOf = form.targeting?.any_of ?? []
+  if (anyOf.length > 50) {
+    appStore.showError(t('admin.announcements.failedToCreate'))
+    return
+  }
+  for (const g of anyOf) {
+    const allOf = g?.all_of ?? []
+    if (allOf.length > 50) {
+      appStore.showError(t('admin.announcements.failedToCreate'))
+      return
+    }
+  }
+
+  saving.value = true
+  try {
+    if (!editingAnnouncement.value) {
+      const payload = buildCreatePayload()
+      await adminAPI.announcements.create(payload)
+      appStore.showSuccess(t('common.success'))
+      showEditDialog.value = false
+      await loadAnnouncements()
+      return
+    }
+
+    const original = editingAnnouncement.value
+    const payload = buildUpdatePayload(original)
+    await adminAPI.announcements.update(original.id, payload)
+    appStore.showSuccess(t('common.success'))
+    showEditDialog.value = false
+    editingAnnouncement.value = null
+    await loadAnnouncements()
+  } catch (error: any) {
+    console.error('Failed to save announcement:', error)
+    appStore.showError(error.response?.data?.detail || (editingAnnouncement.value ? t('admin.announcements.failedToUpdate') : t('admin.announcements.failedToCreate')))
+  } finally {
+    saving.value = false
+  }
+}
+
+// ===== Delete =====
+const showDeleteDialog = ref(false)
+const deletingAnnouncement = ref<Announcement | null>(null)
+
+function handleDelete(row: Announcement) {
+  deletingAnnouncement.value = row
+  showDeleteDialog.value = true
+}
+
+async function confirmDelete() {
+  if (!deletingAnnouncement.value) return
+
+  try {
+    await adminAPI.announcements.delete(deletingAnnouncement.value.id)
+    appStore.showSuccess(t('common.success'))
+    showDeleteDialog.value = false
+    deletingAnnouncement.value = null
+    await loadAnnouncements()
+  } catch (error: any) {
+    console.error('Failed to delete announcement:', error)
+    appStore.showError(error.response?.data?.detail || t('admin.announcements.failedToDelete'))
+  }
+}
+
+// ===== Read status =====
+const showReadStatusDialog = ref(false)
+const readStatusAnnouncementId = ref<number | null>(null)
+
+function openReadStatus(row: Announcement) {
+  readStatusAnnouncementId.value = row.id
+  showReadStatusDialog.value = true
+}
+
+onMounted(async () => {
+  await loadSubscriptionGroups()
+  await loadAnnouncements()
+})
+</script>

frontend/src/views/user/AnnouncementsView.vue

+<template>
+  <AppLayout>
+    <TablePageLayout>
+      <template #actions>
+        <div class="flex justify-end gap-3">
+          <button
+            @click="loadAnnouncements"
+            :disabled="loading"
+            class="btn btn-secondary"
+            :title="t('common.refresh')"
+          >
+            <Icon name="refresh" size="md" :class="loading ? 'animate-spin' : ''" />
+          </button>
+        </div>
+      </template>
+
+      <template #filters>
+        <div class="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+          <label class="flex items-center gap-2 text-sm text-gray-700 dark:text-gray-300">
+            <input v-model="unreadOnly" type="checkbox" class="h-4 w-4 rounded border-gray-300" />
+            <span>{{ t('announcements.unreadOnly') }}</span>
+          </label>
+        </div>
+      </template>
+
+      <template #table>
+        <div v-if="loading" class="flex items-center justify-center py-10">
+          <Icon name="refresh" size="lg" class="animate-spin text-gray-400" />
+        </div>
+
+        <div v-else-if="announcements.length === 0" class="py-12 text-center text-gray-500 dark:text-gray-400">
+          {{ unreadOnly ? t('announcements.emptyUnread') : t('announcements.empty') }}
+        </div>
+
+        <div v-else class="space-y-4">
+          <div
+            v-for="item in announcements"
+            :key="item.id"
+            class="rounded-2xl border border-gray-200 bg-white p-5 shadow-sm dark:border-dark-700 dark:bg-dark-800"
+          >
+            <div class="flex items-start justify-between gap-4">
+              <div class="min-w-0 flex-1">
+                <div class="flex items-center gap-2">
+                  <h3 class="truncate text-base font-semibold text-gray-900 dark:text-white">
+                    {{ item.title }}
+                  </h3>
+                  <span v-if="!item.read_at" class="badge badge-warning">
+                    {{ t('announcements.unread') }}
+                  </span>
+                  <span v-else class="badge badge-success">
+                    {{ t('announcements.read') }}
+                  </span>
+                </div>
+                <div class="mt-1 flex flex-wrap items-center gap-x-4 gap-y-1 text-xs text-gray-500 dark:text-dark-400">
+                  <span>{{ formatDateTime(item.created_at) }}</span>
+                  <span v-if="item.starts_at">
+                    {{ t('announcements.startsAt') }}: {{ formatDateTime(item.starts_at) }}
+                  </span>
+                  <span v-if="item.ends_at">
+                    {{ t('announcements.endsAt') }}: {{ formatDateTime(item.ends_at) }}
+                  </span>
+                </div>
+              </div>
+
+              <div class="flex flex-shrink-0 items-center gap-2">
+                <button
+                  v-if="!item.read_at"
+                  class="btn btn-secondary"
+                  :disabled="markingReadId === item.id"
+                  @click="markRead(item.id)"
+                >
+                  {{ markingReadId === item.id ? t('common.processing') : t('announcements.markRead') }}
+                </button>
+                <span v-else class="text-xs text-gray-500 dark:text-dark-400">
+                  {{ t('announcements.readAt') }}: {{ formatDateTime(item.read_at) }}
+                </span>
+              </div>
+            </div>
+
+            <div class="mt-4 whitespace-pre-wrap text-sm text-gray-700 dark:text-gray-200">
+              {{ item.content }}
+            </div>
+          </div>
+        </div>
+      </template>
+    </TablePageLayout>
+  </AppLayout>
+</template>
+
+<script setup lang="ts">
+import { onMounted, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { announcementsAPI } from '@/api'
+import { useAppStore } from '@/stores/app'
+import { formatDateTime } from '@/utils/format'
+import type { UserAnnouncement } from '@/types'
+import AppLayout from '@/components/layout/AppLayout.vue'
+import TablePageLayout from '@/components/layout/TablePageLayout.vue'
+import Icon from '@/components/icons/Icon.vue'
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const announcements = ref<UserAnnouncement[]>([])
+const loading = ref(false)
+const unreadOnly = ref(false)
+const markingReadId = ref<number | null>(null)
+
+async function loadAnnouncements() {
+  try {
+    loading.value = true
+    announcements.value = await announcementsAPI.list(unreadOnly.value)
+  } catch (err: any) {
+    appStore.showError(err?.message || t('common.unknownError'))
+  } finally {
+    loading.value = false
+  }
+}
+
+async function markRead(id: number) {
+  if (markingReadId.value) return
+  try {
+    markingReadId.value = id
+    await announcementsAPI.markRead(id)
+    await loadAnnouncements()
+  } catch (err: any) {
+    appStore.showError(err?.message || t('common.unknownError'))
+  } finally {
+    markingReadId.value = null
+  }
+}
+
+watch(unreadOnly, () => {
+  loadAnnouncements()
+})
+
+onMounted(() => {
+  loadAnnouncements()
+})
+</script>