From 1253c159f5d673768dca059112df9e9401f21304 Mon Sep 17 00:00:00 2001
From: lz_db <lz_db@lz.com>
Date: Sat, 17 Oct 2026 19:04:05 +0800
Subject: [PATCH] 1

---
 admin/src/api/users.js                        |   5 +
 admin/src/layout/MainLayout.vue               |   1 +
 admin/src/router/index.js                     |   6 +
 admin/src/views/CollectSources.vue            | 212 ++++++++++++
 admin/src/views/SeriesManage.vue              |  35 +-
 admin/src/views/UserList.vue                  |  89 ++++-
 app/android/app/build.gradle.kts              |  28 +-
 app/lib/core/media/download_manager.dart      | 304 ++++++++++++++++
 app/lib/core/media/local_media_server.dart    | 303 ++++++++++++++++
 app/lib/core/network/api_client.dart          |  77 +++--
 app/lib/core/player/feed_player_pool.dart     |  96 ++++-
 app/lib/main.dart                             |  28 +-
 app/lib/providers/auth_provider.dart          |   7 +
 app/lib/providers/feed_provider.dart          |  24 +-
 app/lib/router.dart                           |   6 +
 .../screens/downloads/downloads_screen.dart   | 135 ++++++++
 app/lib/screens/feed/feed_screen.dart         |  35 +-
 .../screens/feed/widgets/feed_video_page.dart |  55 ++-
 .../feed/widgets/video_info_section.dart      |  28 +-
 .../feed/widgets/video_player_view.dart       |  76 +++-
 app/lib/screens/home/home_shell.dart          |  18 +-
 .../screens/player/simple_player_screen.dart  | 174 ++++++++--
 app/lib/screens/profile/mine_screen.dart      |   5 +
 app/pubspec.yaml                              |   7 +-
 deploy.sh                                     |  20 +-
 .../b3c7d9e21f4a_add_collection_records.py    |  33 ++
 .../c8f2a15e93b7_add_collection_sources.py    |  37 ++
 .../api/v1/__pycache__/videos.cpython-311.pyc | Bin 15290 -> 15303 bytes
 server/app/api/v1/admin.py                    | 327 ++++++++++++++++++
 server/app/api/v1/media.py                    |  34 ++
 server/app/api/v1/videos.py                   |   2 +-
 server/app/main.py                            |   3 +-
 .../models/__pycache__/video.cpython-311.pyc  | Bin 10248 -> 13312 bytes
 server/app/models/video.py                    |  34 ++
 .../schemas/__pycache__/admin.cpython-311.pyc | Bin 9624 -> 10083 bytes
 server/app/schemas/admin.py                   |   7 +
 .../__pycache__/admin_service.cpython-311.pyc | Bin 91224 -> 92515 bytes
 .../__pycache__/video_service.cpython-311.pyc | Bin 53238 -> 55188 bytes
 server/app/services/admin_service.py          |  20 ++
 server/app/services/collection_service.py     | 269 ++++++++++++++
 server/app/services/video_service.py          |  28 ++
 server/scripts/build_tags_from_titles.py      | 157 +++++++++
 server/scripts/collect_short_dramas.py        |  41 +++
 43 files changed, 2652 insertions(+), 114 deletions(-)
 create mode 100644 admin/src/views/CollectSources.vue
 create mode 100644 app/lib/core/media/download_manager.dart
 create mode 100644 app/lib/core/media/local_media_server.dart
 create mode 100644 app/lib/screens/downloads/downloads_screen.dart
 create mode 100644 server/alembic/versions/b3c7d9e21f4a_add_collection_records.py
 create mode 100644 server/alembic/versions/c8f2a15e93b7_add_collection_sources.py
 create mode 100644 server/app/api/v1/media.py
 create mode 100644 server/app/services/collection_service.py
 create mode 100644 server/scripts/build_tags_from_titles.py
 create mode 100644 server/scripts/collect_short_dramas.py

diff --git a/admin/src/api/users.js b/admin/src/api/users.js
index 01c3a73..8a70c75 100644
--- a/admin/src/api/users.js
+++ b/admin/src/api/users.js
@@ -15,3 +15,8 @@ export function getUserDetail(userId) {
 export function setUserStatus(userId, data) {
   return request.put(`/admin/users/${userId}/status`, data)
 }
+
+/** 后台重置用户密码（敏感） { new_password, reason } */
+export function resetUserPassword(userId, data) {
+  return request.put(`/admin/users/${userId}/password`, data)
+}
diff --git a/admin/src/layout/MainLayout.vue b/admin/src/layout/MainLayout.vue
index 9476e2f..6161892 100644
--- a/admin/src/layout/MainLayout.vue
+++ b/admin/src/layout/MainLayout.vue
@@ -71,6 +71,7 @@ const menuConfig = [
       { title: '发布视频', path: '/videos/create', icon: 'Upload', roles: [] },
       { title: '视频管理', path: '/videos', icon: 'Film', roles: [] },
       { title: '系列管理', path: '/series', icon: 'CollectionTag', roles: [] },
+      { title: '采集源管理', path: '/collect-sources', icon: 'Download', roles: [] },
       { title: '分类管理', path: '/categories', icon: 'Menu', roles: [] },
       { title: '标签管理', path: '/tags', icon: 'PriceTag', roles: [] },
       { title: '评论管理', path: '/comments', icon: 'ChatDotRound', roles: [] },
diff --git a/admin/src/router/index.js b/admin/src/router/index.js
index 491e80b..0710d49 100644
--- a/admin/src/router/index.js
+++ b/admin/src/router/index.js
@@ -58,6 +58,12 @@ const routes = [
         component: () => import('@/views/SeriesManage.vue'),
         meta: { title: '系列管理', icon: 'CollectionTag', roles: [] },
       },
+      {
+        path: 'collect-sources',
+        name: 'collect-sources',
+        component: () => import('@/views/CollectSources.vue'),
+        meta: { title: '采集源管理', icon: 'Download', roles: [] },
+      },
       {
         path: 'categories',
         name: 'category-manage',
diff --git a/admin/src/views/CollectSources.vue b/admin/src/views/CollectSources.vue
new file mode 100644
index 0000000..6e92114
--- /dev/null
+++ b/admin/src/views/CollectSources.vue
@@ -0,0 +1,212 @@
+<template>
+  <div class="collect-sources">
+    <el-card shadow="never">
+      <template #header>
+        <div class="header">
+          <span>采集源管理</span>
+          <div>
+            <el-button :loading="syncAllLoading" @click="syncAll">全部同步</el-button>
+            <el-button @click="batchVisible = true">批量添加</el-button>
+            <el-button type="primary" @click="showCreate">+ 添加采集源</el-button>
+          </div>
+        </div>
+      </template>
+
+      <el-alert type="info" :closable="false" style="margin-bottom: 12px">
+        添加"分类名 + 列表URL"后点同步即可自动采集；URL 中用 <code v-pre>{{page}}</code> 表示页码占位。
+        分类名不存在时会自动创建。同步为增量：已入库的视频自动跳过。
+      </el-alert>
+
+      <el-table :data="list" v-loading="loading" stripe>
+        <el-table-column prop="id" label="ID" width="60" />
+        <el-table-column prop="name" label="分类名" width="130" />
+        <el-table-column prop="list_url" label="列表 URL" min-width="320" show-overflow-tooltip />
+        <el-table-column label="状态" width="80">
+          <template #default="{ row }">
+            <el-tag :type="row.status === 1 ? 'success' : 'info'" size="small">
+              {{ row.status === 1 ? '启用' : '停用' }}
+            </el-tag>
+          </template>
+        </el-table-column>
+        <el-table-column prop="last_sync_at" label="上次同步" width="160">
+          <template #default="{ row }">{{ row.last_sync_at || '从未' }}</template>
+        </el-table-column>
+        <el-table-column label="操作" width="240" fixed="right">
+          <template #default="{ row }">
+            <el-button link type="warning" :loading="syncingId === row.id" @click="syncOne(row)">同步</el-button>
+            <el-button link type="primary" @click="showEdit(row)">编辑</el-button>
+            <el-button link type="primary" @click="toggleStatus(row)">
+              {{ row.status === 1 ? '停用' : '启用' }}
+            </el-button>
+            <el-button link type="danger" @click="del(row)">删除</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+    </el-card>
+
+    <el-dialog v-model="batchVisible" title="批量添加采集源" width="640px">
+      <el-alert type="info" :closable="false" style="margin-bottom: 10px">
+        每行一条，格式：<code v-pre>分类名 URL</code>（URL 可带反引号）。提交后自动创建分类并立即开始采集。
+      </el-alert>
+      <el-input v-model="batchText" type="textarea" :rows="10"
+                :placeholder="'每日更新 https://mdcmai4.xyz/api/v1/videos?categoryId=27&page={{page}}&size=60\n清纯少女 https://mdcmai4.xyz/api/v1/videos?categoryId=13&page={{page}}&size=60'" />
+      <div v-if="batchResult" style="margin-top: 10px; font-size: 13px">
+        <div v-if="batchResult.created.length" style="color: #67c23a">
+          已创建 {{ batchResult.created.length }} 个并启动采集：{{ batchResult.created.map(c => c.name).join('、') }}
+        </div>
+        <div v-if="batchResult.skipped.length" style="color: #e6a23c">
+          跳过 {{ batchResult.skipped.length }} 条（URL 已存在）：{{ batchResult.skipped.map(s => s.name).join('、') }}
+        </div>
+        <div v-if="batchResult.failed.length" style="color: #f56c6c">
+          失败 {{ batchResult.failed.length }} 条：{{ batchResult.failed.map(f => f.line).join('；') }}
+        </div>
+      </div>
+      <template #footer>
+        <el-button @click="batchVisible = false">关闭</el-button>
+        <el-button type="primary" :loading="batchSubmitting" @click="submitBatch">提交</el-button>
+      </template>
+    </el-dialog>
+
+    <el-dialog v-model="dialogVisible" :title="editing ? '编辑采集源' : '添加采集源'" width="560px">
+      <el-form :model="form" label-width="90px">
+        <el-form-item label="分类名">
+          <el-input v-model="form.name" maxlength="50" placeholder="如：每日更新（不存在会自动创建分类）" />
+        </el-form-item>
+        <el-form-item label="列表 URL">
+          <el-input v-model="form.list_url" type="textarea" :rows="3"
+                    placeholder="https://example.com/api/v1/videos?categoryId=27&page={{page}}&size=60" />
+        </el-form-item>
+      </el-form>
+      <template #footer>
+        <el-button @click="dialogVisible = false">取消</el-button>
+        <el-button type="primary" :loading="submitting" @click="save">保存</el-button>
+      </template>
+    </el-dialog>
+  </div>
+</template>
+
+<script setup>
+import { reactive, ref, onMounted } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import request from '@/api/request'
+
+const list = ref([])
+const loading = ref(false)
+const dialogVisible = ref(false)
+const editing = ref(null)
+const submitting = ref(false)
+const syncingId = ref(0)
+const syncAllLoading = ref(false)
+
+const form = reactive({ name: '', list_url: '' })
+
+const batchVisible = ref(false)
+const batchText = ref('')
+const batchSubmitting = ref(false)
+const batchResult = ref(null)
+
+async function submitBatch() {
+  if (!batchText.value.trim()) { ElMessage.warning('请粘贴内容'); return }
+  batchSubmitting.value = true
+  batchResult.value = null
+  try {
+    const r = await request({ url: '/admin/collection/sources/batch', method: 'post', data: { text: batchText.value } })
+    batchResult.value = r
+    if (r.created.length) { batchText.value = ''; setTimeout(load, 3000) }
+    else load()
+  } catch (e) {} finally {
+    batchSubmitting.value = false
+  }
+}
+
+onMounted(load)
+
+async function load() {
+  loading.value = true
+  try {
+    const r = await request({ url: '/admin/collection/sources', method: 'get' })
+    list.value = r.list
+  } catch (e) {} finally {
+    loading.value = false
+  }
+}
+
+function showCreate() {
+  editing.value = null
+  Object.assign(form, { name: '', list_url: '' })
+  dialogVisible.value = true
+}
+
+function showEdit(row) {
+  editing.value = row
+  Object.assign(form, { name: row.name, list_url: row.list_url })
+  dialogVisible.value = true
+}
+
+async function save() {
+  if (!form.name || !form.list_url) { ElMessage.warning('请填写完整'); return }
+  if (!form.list_url.includes('{{page}}')) { ElMessage.warning('URL 需包含 {{page}} 页码占位符'); return }
+  submitting.value = true
+  try {
+    if (editing.value) {
+      await request({ url: `/admin/collection/sources/${editing.value.id}`, method: 'put', data: form })
+      ElMessage.success('已更新')
+    } else {
+      await request({ url: '/admin/collection/sources', method: 'post', data: form })
+      ElMessage.success('已添加，点击"同步"开始采集')
+    }
+    dialogVisible.value = false
+    load()
+  } catch (e) {} finally {
+    submitting.value = false
+  }
+}
+
+async function toggleStatus(row) {
+  try {
+    await request({
+      url: `/admin/collection/sources/${row.id}`, method: 'put',
+      data: { status: row.status === 1 ? 0 : 1 },
+    })
+    ElMessage.success('已更新')
+    load()
+  } catch (e) {}
+}
+
+async function del(row) {
+  await ElMessageBox.confirm(
+    `确认删除采集源「${row.name}」？已采集的视频不会被删除。`, '警告', { type: 'warning' }
+  )
+  try {
+    await request({ url: `/admin/collection/sources/${row.id}`, method: 'delete' })
+    ElMessage.success('已删除')
+    load()
+  } catch (e) {}
+}
+
+async function syncOne(row) {
+  syncingId.value = row.id
+  try {
+    await request({ url: `/admin/collection/sources/${row.id}/sync`, method: 'post', data: { max_pages: 0 } })
+    ElMessage.success(`「${row.name}」已触发后台同步，稍后刷新查看`)
+    setTimeout(load, 20000)
+  } catch (e) {} finally {
+    syncingId.value = 0
+  }
+}
+
+async function syncAll() {
+  syncAllLoading.value = true
+  try {
+    const r = await request({ url: '/admin/collection/sources/sync-all', method: 'post' })
+    ElMessage.success(`已触发 ${r.started.length} 个源的后台同步`)
+    setTimeout(load, 20000)
+  } catch (e) {} finally {
+    syncAllLoading.value = false
+  }
+}
+</script>
+
+<style scoped>
+.header { display: flex; justify-content: space-between; align-items: center; }
+</style>
diff --git a/admin/src/views/SeriesManage.vue b/admin/src/views/SeriesManage.vue
index b9a707e..b53dade 100644
--- a/admin/src/views/SeriesManage.vue
+++ b/admin/src/views/SeriesManage.vue
@@ -7,6 +7,7 @@
           <div>
             <el-input v-model="keyword" placeholder="搜索系列标题" clearable
                       style="width: 200px; margin-right: 8px" @keyup.enter="load" />
+            <el-button :loading="syncAllLoading" @click="syncAll">同步新剧</el-button>
             <el-button type="primary" @click="showCreate">+ 新建系列</el-button>
           </div>
         </div>
@@ -23,6 +24,12 @@
           </template>
         </el-table-column>
         <el-table-column prop="total_episodes" label="集数" width="90" />
+        <el-table-column label="来源" width="80">
+          <template #default="{ row }">
+            <el-tag v-if="row.source_id" size="small" type="warning">采集</el-tag>
+            <span v-else>-</span>
+          </template>
+        </el-table-column>
         <el-table-column label="状态" width="80">
           <template #default="{ row }">
             <el-tag :type="row.status === 1 ? 'success' : 'info'" size="small">
@@ -31,9 +38,11 @@
           </template>
         </el-table-column>
         <el-table-column prop="created_at" label="创建时间" width="170" />
-        <el-table-column label="操作" width="180" fixed="right">
+        <el-table-column label="操作" width="230" fixed="right">
           <template #default="{ row }">
             <el-button link type="primary" @click="showEdit(row)">编辑</el-button>
+            <el-button v-if="row.source_id" link type="warning"
+                       :loading="syncingId === row.id" @click="syncOne(row)">更新</el-button>
             <el-button link type="primary" @click="toggleStatus(row)">
               {{ row.status === 1 ? '隐藏' : '恢复' }}
             </el-button>
@@ -116,6 +125,8 @@ const dialogVisible = ref(false)
 const editing = ref(null)
 const submitting = ref(false)
 const coverUploading = ref(false)
+const syncAllLoading = ref(false)
+const syncingId = ref(0)
 
 const form = reactive({
   title: '', cover_url: '', description: '', category_id: 0,
@@ -224,6 +235,28 @@ async function del(row) {
     load()
   } catch (e) {}
 }
+
+async function syncOne(row) {
+  syncingId.value = row.id
+  try {
+    const r = await request({ url: `/admin/collection/sync/${row.id}`, method: 'post' })
+    ElMessage.success(`同步完成：新增 ${r.episodes_created} 集，已存在 ${r.episodes_skipped} 集`)
+    load()
+  } catch (e) {} finally {
+    syncingId.value = 0
+  }
+}
+
+async function syncAll() {
+  syncAllLoading.value = true
+  try {
+    await request({ url: '/admin/collection/sync-all', method: 'post', data: { pages: 2 } })
+    ElMessage.success('已触发后台同步，稍后刷新查看')
+    setTimeout(load, 15000)
+  } catch (e) {} finally {
+    syncAllLoading.value = false
+  }
+}
 </script>
 
 <style scoped>
diff --git a/admin/src/views/UserList.vue b/admin/src/views/UserList.vue
index e4f878c..e0a34f5 100644
--- a/admin/src/views/UserList.vue
+++ b/admin/src/views/UserList.vue
@@ -48,9 +48,18 @@
         </template>
       </el-table-column>
       <el-table-column prop="created_at" label="注册时间" width="170" />
-      <el-table-column label="操作" width="170" fixed="right">
+      <el-table-column label="操作" width="230" fixed="right">
         <template #default="{ row }">
           <el-button link type="primary" :icon="View" @click="toDetail(row)">详情</el-button>
+          <el-button
+            v-if="row.status !== 3"
+            link
+            type="warning"
+            :icon="Key"
+            @click="openResetPwd(row)"
+          >
+            改密
+          </el-button>
           <el-button
             v-if="row.status === 1"
             link
@@ -84,16 +93,52 @@
         @current-change="load"
       />
     </div>
+
+    <!-- 重置密码弹窗 -->
+    <el-dialog v-model="pwdDialog.visible" title="重置用户密码" width="420px">
+      <el-form label-width="80px">
+        <el-form-item label="用户">
+          <span>{{ pwdDialog.nickname }} #{{ pwdDialog.userId }}</span>
+        </el-form-item>
+        <el-form-item label="新密码">
+          <el-input
+            v-model="pwdDialog.newPassword"
+            type="password"
+            show-password
+            placeholder="6-100 位"
+            maxlength="100"
+          />
+        </el-form-item>
+        <el-form-item label="操作原因">
+          <el-input
+            v-model="pwdDialog.reason"
+            type="textarea"
+            :rows="2"
+            placeholder="必填，将记录操作日志"
+            maxlength="200"
+          />
+        </el-form-item>
+      </el-form>
+      <div style="color: var(--el-color-warning); font-size: 12px; margin-top: -8px">
+        重置后该用户所有端登录态立即失效，需用新密码重新登录
+      </div>
+      <template #footer>
+        <el-button @click="pwdDialog.visible = false">取消</el-button>
+        <el-button type="primary" :loading="pwdDialog.submitting" @click="submitResetPwd">
+          确定
+        </el-button>
+      </template>
+    </el-dialog>
   </div>
 </template>
 
 <script setup>
-import { Lock, Refresh, Search, Unlock, View } from '@element-plus/icons-vue'
+import { Key, Lock, Refresh, Search, Unlock, View } from '@element-plus/icons-vue'
 import { ElMessage } from 'element-plus'
 import { onMounted, reactive, ref } from 'vue'
 import { useRouter } from 'vue-router'
 
-import { listUsers, setUserStatus } from '@/api/users'
+import { listUsers, resetUserPassword, setUserStatus } from '@/api/users'
 import { askReason } from '@/utils/reason'
 
 const STATUS_TAG = { 1: 'success', 2: 'danger', 3: 'info' }
@@ -154,5 +199,43 @@ async function toggleStatus(row, target) {
   load()
 }
 
+const pwdDialog = reactive({
+  visible: false,
+  userId: 0,
+  nickname: '',
+  newPassword: '',
+  reason: '',
+  submitting: false,
+})
+
+function openResetPwd(row) {
+  pwdDialog.userId = row.user_id
+  pwdDialog.nickname = row.nickname || ''
+  pwdDialog.newPassword = ''
+  pwdDialog.reason = ''
+  pwdDialog.visible = true
+}
+
+async function submitResetPwd() {
+  const pwd = pwdDialog.newPassword.trim()
+  const reason = pwdDialog.reason.trim()
+  if (pwd.length < 6 || pwd.length > 100) {
+    ElMessage.warning('新密码长度需为 6-100 位')
+    return
+  }
+  if (!reason) {
+    ElMessage.warning('请填写操作原因')
+    return
+  }
+  pwdDialog.submitting = true
+  try {
+    await resetUserPassword(pwdDialog.userId, { new_password: pwd, reason })
+    ElMessage.success('密码已重置，该用户全端登录态已失效')
+    pwdDialog.visible = false
+  } finally {
+    pwdDialog.submitting = false
+  }
+}
+
 onMounted(load)
 </script>
diff --git a/app/android/app/build.gradle.kts b/app/android/app/build.gradle.kts
index 1ee0490..261d9b9 100644
--- a/app/android/app/build.gradle.kts
+++ b/app/android/app/build.gradle.kts
@@ -1,3 +1,6 @@
+import java.util.Properties
+import java.io.FileInputStream
+
 plugins {
     id("com.android.application")
     id("kotlin-android")
@@ -5,6 +8,13 @@ plugins {
     id("dev.flutter.flutter-gradle-plugin")
 }
 
+// 正式签名配置：从 android/key.properties 读取（该文件与 keystore 均已 gitignore，不入库）
+val keystoreProperties = Properties()
+val keystorePropertiesFile = rootProject.file("key.properties")
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(FileInputStream(keystorePropertiesFile))
+}
+
 android {
     namespace = "com.jsnbhh.video_app"
     compileSdk = flutter.compileSdkVersion
@@ -30,11 +40,23 @@ android {
         versionName = flutter.versionName
     }
 
+    signingConfigs {
+        create("release") {
+            keyAlias = keystoreProperties["keyAlias"] as String
+            keyPassword = keystoreProperties["keyPassword"] as String
+            storeFile = keystoreProperties["storeFile"]?.let { file(it) }
+            storePassword = keystoreProperties["storePassword"] as String
+        }
+    }
+
     buildTypes {
         release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig = signingConfigs.getByName("debug")
+            // key.properties 存在时用正式签名；否则回退 debug（保证 CI/新环境能编译）
+            signingConfig = if (keystorePropertiesFile.exists()) {
+                signingConfigs.getByName("release")
+            } else {
+                signingConfigs.getByName("debug")
+            }
         }
     }
 }
diff --git a/app/lib/core/media/download_manager.dart b/app/lib/core/media/download_manager.dart
new file mode 100644
index 0000000..72637ed
--- /dev/null
+++ b/app/lib/core/media/download_manager.dart
@@ -0,0 +1,304 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:path/path.dart' as p;
+
+import '../../models/video_item.dart';
+import 'local_media_server.dart';
+
+/// 已下载视频元数据（持久化在 downloads/<videoId>/meta.json）
+class DownloadItem {
+  DownloadItem({
+    required this.videoId,
+    required this.title,
+    required this.coverUrl,
+    required this.duration,
+    required this.sizeBytes,
+    required this.mp4,
+    required this.createdAt,
+  });
+
+  final int videoId;
+  final String title;
+  final String coverUrl;
+  final int duration; // 秒
+  final int sizeBytes;
+  final bool mp4;
+  final int createdAt; // 毫秒时间戳
+
+  /// 本地播放地址（经 LocalMediaServer /local 路由，支持 Range）
+  String get playUrl =>
+      LocalMediaServer.I.localPlayUrl(videoId, mp4: mp4);
+
+  Map<String, dynamic> toJson() => {
+        'video_id': videoId,
+        'title': title,
+        'cover_url': coverUrl,
+        'duration': duration,
+        'size_bytes': sizeBytes,
+        'mp4': mp4,
+        'created_at': createdAt,
+      };
+
+  factory DownloadItem.fromJson(Map<String, dynamic> j) => DownloadItem(
+        videoId: j['video_id'] as int,
+        title: (j['title'] as String?) ?? '',
+        coverUrl: (j['cover_url'] as String?) ?? '',
+        duration: (j['duration'] as num?)?.toInt() ?? 0,
+        sizeBytes: (j['size_bytes'] as num?)?.toInt() ?? 0,
+        mp4: j['mp4'] as bool? ?? false,
+        createdAt: (j['created_at'] as num?)?.toInt() ?? 0,
+      );
+}
+
+/// 下载任务状态机：value 为 0..1 进度；done/error 用独立集合
+class DownloadsState {
+  const DownloadsState({
+    this.progress = const {},
+    this.errors = const {},
+    this.items = const [],
+  });
+
+  final Map<int, double> progress; // 下载中
+  final Map<int, String> errors; // 失败信息
+  final List<DownloadItem> items; // 已完成（按下载时间倒序）
+
+  DownloadsState copyWith({
+    Map<int, double>? progress,
+    Map<int, String>? errors,
+    List<DownloadItem>? items,
+  }) =>
+      DownloadsState(
+        progress: progress ?? this.progress,
+        errors: errors ?? this.errors,
+        items: items ?? this.items,
+      );
+}
+
+class DownloadManager extends StateNotifier<DownloadsState> {
+  DownloadManager() : super(const DownloadsState());
+
+  final Dio _dio = Dio(BaseOptions(
+    connectTimeout: const Duration(seconds: 15),
+    receiveTimeout: const Duration(minutes: 10),
+    headers: {
+      'User-Agent': 'Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 '
+          '(KHTML, like Gecko) Chrome/120.0 Mobile Safari/537.36',
+    },
+  ));
+
+  final Map<int, CancelToken> _cancel = {};
+
+  bool isDownloaded(int videoId) =>
+      state.items.any((e) => e.videoId == videoId);
+  bool isDownloading(int videoId) => state.progress.containsKey(videoId);
+
+  /// 启动时扫描下载目录恢复列表
+  Future<void> init() async {
+    final dir = LocalMediaServer.I.downloadsDir;
+    final items = <DownloadItem>[];
+    await for (final e in dir.list()) {
+      if (e is! Directory) continue;
+      final meta = File(p.join(e.path, 'meta.json'));
+      if (!await meta.exists()) continue;
+      try {
+        items.add(DownloadItem.fromJson(
+            jsonDecode(await meta.readAsString()) as Map<String, dynamic>));
+      } catch (_) {}
+    }
+    items.sort((a, b) => b.createdAt.compareTo(a.createdAt));
+    state = state.copyWith(items: items);
+  }
+
+  /// 开始下载（已在下载/已下载则忽略）
+  Future<void> start(VideoItem item) async {
+    if (isDownloading(item.videoId) || isDownloaded(item.videoId)) return;
+
+    final dir = Directory(p.join(
+        LocalMediaServer.I.downloadsDir.path, '${item.videoId}'));
+    await dir.create(recursive: true);
+    final cancel = CancelToken();
+    _cancel[item.videoId] = cancel;
+    _setProgress(item.videoId, 0);
+
+    try {
+      final isMp4 = item.videoUrl.contains('.mp4') &&
+          !item.videoUrl.contains('m3u8');
+      int size;
+      if (isMp4) {
+        size = await _downloadMp4(item.videoUrl, dir, item.videoId, cancel);
+      } else {
+        size = await _downloadHls(item.videoUrl, dir, item.videoId, cancel);
+      }
+
+      final meta = DownloadItem(
+        videoId: item.videoId,
+        title: item.title,
+        coverUrl: item.coverUrl,
+        duration: item.duration,
+        sizeBytes: size,
+        mp4: isMp4,
+        createdAt: DateTime.now().millisecondsSinceEpoch,
+      );
+      await File(p.join(dir.path, 'meta.json'))
+          .writeAsString(jsonEncode(meta.toJson()));
+
+      final progress = Map<int, double>.from(state.progress)
+        ..remove(item.videoId);
+      state = state.copyWith(
+        progress: progress,
+        items: [meta, ...state.items],
+      );
+    } catch (e) {
+      // 失败/取消：清掉半成品目录
+      try {
+        await dir.delete(recursive: true);
+      } catch (_) {}
+      final progress = Map<int, double>.from(state.progress)
+        ..remove(item.videoId);
+      if (e is DioException && CancelToken.isCancel(e)) {
+        state = state.copyWith(progress: progress);
+      } else {
+        final errors = Map<int, String>.from(state.errors)
+          ..[item.videoId] = '下载失败，请重试';
+        state = state.copyWith(progress: progress, errors: errors);
+      }
+      rethrow;
+    } finally {
+      _cancel.remove(item.videoId);
+    }
+  }
+
+  void cancel(int videoId) => _cancel[videoId]?.cancel();
+
+  Future<void> delete(int videoId) async {
+    _cancel[videoId]?.cancel();
+    final dir = Directory(
+        p.join(LocalMediaServer.I.downloadsDir.path, '$videoId'));
+    try {
+      await dir.delete(recursive: true);
+    } catch (_) {}
+    state = state.copyWith(
+      items: state.items.where((e) => e.videoId != videoId).toList(),
+    );
+  }
+
+  // ---------- MP4 ----------
+
+  Future<int> _downloadMp4(
+      String url, Directory dir, int videoId, CancelToken cancel) async {
+    final file = File(p.join(dir.path, 'video.mp4'));
+    await _dio.download(
+      url,
+      file.path,
+      cancelToken: cancel,
+      onReceiveProgress: (r, t) {
+        if (t > 0) _setProgress(videoId, r / t);
+      },
+    );
+    return file.length();
+  }
+
+  // ---------- HLS ----------
+
+  /// 拉取 m3u8 → 下载 key + 全部 ts → 改写为本地相对引用
+  Future<int> _downloadHls(
+      String url, Directory dir, int videoId, CancelToken cancel) async {
+    var playlist = (await _dio.get<String>(url, cancelToken: cancel)).data ?? '';
+    var base = Uri.parse(url);
+
+    // master playlist（多变体）：取第一个变体再拉一次
+    if (playlist.contains('#EXT-X-STREAM-INF')) {
+      final variant = const LineSplitter()
+          .convert(playlist)
+          .firstWhere((l) => l.trim().isNotEmpty && !l.startsWith('#'),
+              orElse: () => '');
+      if (variant.isEmpty) throw Exception('空变体列表');
+      final variantUrl = base.resolve(variant.trim()).toString();
+      playlist =
+          (await _dio.get<String>(variantUrl, cancelToken: cancel)).data ?? '';
+      base = Uri.parse(variantUrl);
+    }
+
+    final lines = const LineSplitter().convert(playlist);
+    final segUrls = <Uri>[
+      for (final l in lines)
+        if (l.trim().isNotEmpty && !l.trim().startsWith('#'))
+          base.resolve(l.trim()),
+    ];
+    if (segUrls.isEmpty) throw Exception('无分片');
+
+    var total = 0;
+    var done = 0;
+
+    // key（可能多个，逐标签改写时按出现顺序对应）
+    final keyUris = <String>[];
+    for (final l in lines) {
+      for (final m in RegExp(r'URI="([^"]+)"').allMatches(l)) {
+        final abs = base.resolve(m.group(1)!).toString();
+        if (!keyUris.contains(abs)) keyUris.add(abs);
+      }
+    }
+    final keyNames = <String, String>{};
+    for (var i = 0; i < keyUris.length; i++) {
+      final name = i == 0 ? 'key.bin' : 'key_$i.bin';
+      final bytes = (await _dio.get<List<int>>(keyUris[i],
+              cancelToken: cancel,
+              options: Options(responseType: ResponseType.bytes)))
+          .data;
+      if (bytes == null || bytes.isEmpty) throw Exception('密钥下载失败');
+      await File(p.join(dir.path, name)).writeAsBytes(bytes);
+      keyNames[keyUris[i]] = name;
+      total += bytes.length;
+    }
+
+    // ts 分片：4 并发
+    const concurrency = 4;
+    for (var i = 0; i < segUrls.length; i += concurrency) {
+      final batch = segUrls.sublist(
+          i, (i + concurrency).clamp(0, segUrls.length));
+      final results = await Future.wait(batch.map((u) => _dio.get<List<int>>(
+          u.toString(),
+          cancelToken: cancel,
+          options: Options(responseType: ResponseType.bytes))));
+      for (var j = 0; j < batch.length; j++) {
+        final bytes = results[j].data;
+        if (bytes == null || bytes.isEmpty) throw Exception('分片下载失败');
+        await File(p.join(dir.path, 'seg_${i + j}.ts')).writeAsBytes(bytes);
+        total += bytes.length;
+        done++;
+      }
+      _setProgress(videoId, done / segUrls.length);
+    }
+
+    // 改写 playlist 为本地相对引用
+    var segIndex = 0;
+    final out = StringBuffer();
+    for (final raw in lines) {
+      final line = raw.trim();
+      if (line.isEmpty) continue;
+      if (line.startsWith('#')) {
+        out.writeln(line.replaceAllMapped(RegExp(r'URI="([^"]+)"'), (m) {
+          final abs = base.resolve(m.group(1)!).toString();
+          return 'URI="${keyNames[abs] ?? m.group(1)!}"';
+        }));
+      } else {
+        out.writeln('seg_${segIndex++}.ts');
+      }
+    }
+    await File(p.join(dir.path, 'index.m3u8')).writeAsString(out.toString());
+    return total;
+  }
+
+  void _setProgress(int videoId, double value) {
+    final progress = Map<int, double>.from(state.progress);
+    progress[videoId] = value;
+    state = state.copyWith(progress: progress);
+  }
+}
+
+final downloadManagerProvider =
+    StateNotifierProvider<DownloadManager, DownloadsState>(
+        (ref) => DownloadManager());
diff --git a/app/lib/core/media/local_media_server.dart b/app/lib/core/media/local_media_server.dart
new file mode 100644
index 0000000..7141bb2
--- /dev/null
+++ b/app/lib/core/media/local_media_server.dart
@@ -0,0 +1,303 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:crypto/crypto.dart';
+import 'package:dio/dio.dart';
+import 'package:path/path.dart' as p;
+import 'package:path_provider/path_provider.dart';
+import 'package:shelf/shelf.dart' as shelf;
+import 'package:shelf/shelf_io.dart' as shelf_io;
+import 'package:shelf_router/shelf_router.dart';
+
+/// 本地媒体服务（127.0.0.1 环回 HTTP）：
+///
+/// 1. HLS 分片缓存（1G LRU）：播放器请求经 /hls 改写 m3u8 内的 ts/key 绝对
+///    地址到 /seg，/seg 命中磁盘缓存直接返回，未命中回源并落盘 —— 回看不下载。
+///    注意：ts 链接带时效签名，缓存键取「去 query 的路径 sha1」，m3u8 每次回源。
+/// 2. 已下载视频离线播放：/local/<videoId>/<file> 直接读下载目录（支持 Range）。
+///
+/// 只有 m3u8 走代理；mp4 直连（库里仅个位数 mp4，不做缓存）。
+class LocalMediaServer {
+  LocalMediaServer._();
+  static final LocalMediaServer I = LocalMediaServer._();
+
+  static const int _cacheLimit = 1024 * 1024 * 1024; // 1G
+  static const int _evictTo = 900 * 1024 * 1024; // 清理到 900M（滞后防抖）
+
+  final Dio _dio = Dio(BaseOptions(
+    connectTimeout: const Duration(seconds: 15),
+    receiveTimeout: const Duration(minutes: 5),
+    headers: {
+      'User-Agent': 'Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 '
+          '(KHTML, like Gecko) Chrome/120.0 Mobile Safari/537.36',
+    },
+  ));
+
+  bool _started = false;
+  late int _port;
+  late Directory cacheDir; // <temp>/hls_cache（系统可清理，适合缓存语义）
+  late Directory downloadsDir; // <appSupport>/downloads（持久）
+
+  int _cacheBytes = 0;
+  int _writesSinceEvictCheck = 0;
+
+  /// 同一分片并发回源去重（playlist 内可能重复引用 / 多槽位同时 open）
+  final Map<String, Future<List<int>>> _inflight = {};
+
+  Future<void> init() async {
+    if (_started) return;
+    final tmp = await getTemporaryDirectory();
+    cacheDir = Directory(p.join(tmp.path, 'hls_cache'));
+    await cacheDir.create(recursive: true);
+    final support = await getApplicationSupportDirectory();
+    downloadsDir = Directory(p.join(support.path, 'downloads'));
+    await downloadsDir.create(recursive: true);
+    _cacheBytes = await _dirSize(cacheDir);
+
+    final router = Router()
+      ..get('/hls', _handlePlaylist)
+      ..get('/seg', _handleSegment)
+      ..get('/local/<vid>/<name>', _handleLocal);
+
+    final server = await shelf_io.serve(
+      const shelf.Pipeline().addHandler(router.call),
+      InternetAddress.loopbackIPv4,
+      0,
+    );
+    _port = server.port;
+    _started = true;
+  }
+
+  /// 播放地址改写：网络 m3u8 → 本地缓存代理；其余（本地地址/mp4/空）原样返回
+  String wrap(String url) {
+    if (!_started || url.isEmpty) return url;
+    final u = Uri.tryParse(url);
+    if (u == null || (u.scheme != 'http' && u.scheme != 'https')) return url;
+    if (u.host == '127.0.0.1' || u.host == 'localhost') return url;
+    if (url.contains('m3u8')) {
+      return 'http://127.0.0.1:$_port/hls?src=${Uri.encodeComponent(url)}';
+    }
+    return url;
+  }
+
+  /// 已下载视频的本地播放地址
+  String localPlayUrl(int videoId, {bool mp4 = false}) =>
+      'http://127.0.0.1:$_port/local/$videoId/${mp4 ? 'video.mp4' : 'index.m3u8'}';
+
+  // ---------- /hls：回源拉 m3u8，改写分片地址到 /seg ----------
+
+  Future<shelf.Response> _handlePlaylist(shelf.Request req) async {
+    final src = req.url.queryParameters['src'];
+    if (src == null || src.isEmpty) {
+      return shelf.Response(400, body: 'missing src');
+    }
+    try {
+      final resp = await _dio.get<String>(src);
+      final text = resp.data ?? '';
+      if (!text.trimLeft().startsWith('#EXTM3U')) {
+        return shelf.Response(502, body: 'bad playlist');
+      }
+      return _bytesResponse(
+        req,
+        utf8.encode(_rewritePlaylist(text, Uri.parse(src))),
+        'application/vnd.apple.mpegurl',
+        noCache: true,
+      );
+    } catch (e) {
+      return shelf.Response(502, body: 'upstream error: $e');
+    }
+  }
+
+  String _segProxyUrl(Uri absolute) =>
+      'http://127.0.0.1:$_port/seg?u=${Uri.encodeComponent(absolute.toString())}';
+
+  String _rewritePlaylist(String text, Uri base) {
+    final out = StringBuffer();
+    for (final rawLine in const LineSplitter().convert(text)) {
+      final line = rawLine.trim();
+      if (line.isEmpty) continue;
+      if (line.startsWith('#')) {
+        // 改写标签内的 URI="..."（EXT-X-KEY / EXT-X-MAP 等）
+        out.writeln(line.replaceAllMapped(
+          RegExp(r'URI="([^"]+)"'),
+          (m) => 'URI="${_segProxyUrl(base.resolve(m.group(1)!))}"',
+        ));
+      } else {
+        out.writeln(_segProxyUrl(base.resolve(line)));
+      }
+    }
+    return out.toString();
+  }
+
+  // ---------- /seg：分片缓存（键 = 去签名路径 sha1）----------
+
+  /// 统一字节响应：始终声明 Accept-Ranges，带 Range 头则返回 206 切片。
+  /// （ffmpeg/mpv 依据 Accept-Ranges 判断流可拖动，否则按直播处理：
+  /// duration=0 → 进度条不走、无法 seek）
+  shelf.Response _bytesResponse(
+      shelf.Request req, List<int> bytes, String contentType,
+      {bool noCache = false}) {
+    final headers = <String, String>{
+      'Content-Type': contentType,
+      'Accept-Ranges': 'bytes',
+      if (noCache) 'Cache-Control': 'no-cache' else 'Cache-Control': 'max-age=31536000',
+    };
+    final range = req.headers['range'];
+    if (range != null && range.startsWith('bytes=')) {
+      final m = RegExp(r'bytes=(\d+)-(\d*)').firstMatch(range);
+      if (m != null) {
+        final start = int.parse(m.group(1)!);
+        if (start < bytes.length) {
+          final endStr = m.group(2) ?? '';
+          final end = endStr.isEmpty
+              ? bytes.length - 1
+              : int.parse(endStr).clamp(0, bytes.length - 1);
+          return shelf.Response(206,
+              body: bytes.sublist(start, end + 1),
+              headers: {
+                ...headers,
+                'Content-Range': 'bytes $start-$end/${bytes.length}',
+              });
+        }
+      }
+    }
+    return shelf.Response.ok(bytes, headers: headers);
+  }
+
+  String _cacheKeyFor(Uri u) {
+    final stripped = Uri(scheme: u.scheme, host: u.host, port: u.port, path: u.path);
+    return sha1.convert(utf8.encode(stripped.toString())).toString();
+  }
+
+  Future<shelf.Response> _handleSegment(shelf.Request req) async {
+    final raw = req.url.queryParameters['u'];
+    if (raw == null || raw.isEmpty) return shelf.Response(400, body: 'missing u');
+    final u = Uri.tryParse(raw);
+    if (u == null) return shelf.Response(400, body: 'bad u');
+
+    final file = File(p.join(cacheDir.path, _cacheKeyFor(u)));
+    if (await file.exists()) {
+      // 触活：LRU 以 mtime 排序
+      await file.setLastModified(DateTime.now());
+      return _bytesResponse(req, await file.readAsBytes(), _contentType(u.path));
+    }
+
+    try {
+      final bytes = await (_inflight[raw] ??= _fetch(u));
+      return _bytesResponse(req, bytes, _contentType(u.path));
+    } catch (e) {
+      return shelf.Response(502, body: 'fetch error: $e');
+    } finally {
+      unawaited(Future(() async {
+        await Future<void>.delayed(const Duration(seconds: 30));
+        _inflight.remove(raw);
+      }));
+    }
+  }
+
+  Future<List<int>> _fetch(Uri u) async {
+    final resp = await _dio.get<List<int>>(
+      u.toString(),
+      options: Options(responseType: ResponseType.bytes),
+    );
+    final bytes = resp.data ?? const <int>[];
+    if (bytes.isEmpty) throw Exception('empty body');
+
+    final file = File(p.join(cacheDir.path, _cacheKeyFor(u)));
+    // tmp 名唯一化：不同签名的同一分片并发回源时避免写同一个临时文件
+    final tmp = File(
+        '${file.path}.${DateTime.now().microsecondsSinceEpoch}.tmp');
+    await tmp.writeAsBytes(bytes, flush: true);
+    await tmp.rename(file.path);
+    _cacheBytes += bytes.length;
+    _maybeEvict();
+    return bytes;
+  }
+
+  /// LRU 清理：超 1G 时按 mtime 从旧到新删到 900M（每 20 次写入最多全扫一次）
+  void _maybeEvict() {
+    if (_cacheBytes <= _cacheLimit) return;
+    if (++_writesSinceEvictCheck < 20) return;
+    _writesSinceEvictCheck = 0;
+    unawaited(Future(() async {
+      final entries = <File>[];
+      await for (final e in cacheDir.list()) {
+        if (e is File) entries.add(e);
+      }
+      entries.sort((a, b) =>
+          a.lastModifiedSync().compareTo(b.lastModifiedSync()));
+      for (final f in entries) {
+        if (_cacheBytes <= _evictTo) break;
+        try {
+          final len = await f.length();
+          await f.delete();
+          _cacheBytes -= len;
+        } catch (_) {}
+      }
+    }));
+  }
+
+  // ---------- /local：已下载内容（Range 支持 mp4 拖动）----------
+
+  Future<shelf.Response> _handleLocal(
+      shelf.Request req, String vid, String name) async {
+    // 防路径穿越
+    if (name.contains('/') || name.contains('..') || vid.contains('..')) {
+      return shelf.Response(400, body: 'bad path');
+    }
+    final file = File(p.join(downloadsDir.path, vid, name));
+    if (!await file.exists()) return shelf.Response.notFound('gone');
+
+    final total = await file.length();
+    final range = req.headers['range'];
+    if (range != null && range.startsWith('bytes=')) {
+      final m = RegExp(r'bytes=(\d*)-(\d*)').firstMatch(range);
+      if (m != null) {
+        final start = int.tryParse(m.group(1) ?? '') ?? 0;
+        final endStr = m.group(2) ?? '';
+        final end = endStr.isEmpty
+            ? total - 1
+            : (int.tryParse(endStr) ?? total - 1).clamp(0, total - 1);
+        final raf = await file.open();
+        try {
+          await raf.setPosition(start);
+          final bytes = await raf.read(end - start + 1);
+          return shelf.Response(206,
+              body: bytes,
+              headers: {
+                'Content-Type': _contentType(name),
+                'Content-Range': 'bytes $start-$end/$total',
+                'Accept-Ranges': 'bytes',
+                'Content-Length': '${bytes.length}',
+              });
+        } finally {
+          await raf.close();
+        }
+      }
+    }
+    return shelf.Response.ok(await file.readAsBytes(), headers: {
+      'Content-Type': _contentType(name),
+      'Accept-Ranges': 'bytes',
+    });
+  }
+
+  String _contentType(String path) {
+    if (path.endsWith('.m3u8')) return 'application/vnd.apple.mpegurl';
+    if (path.endsWith('.ts')) return 'video/mp2t';
+    if (path.endsWith('.mp4')) return 'video/mp4';
+    return 'application/octet-stream';
+  }
+
+  Future<int> _dirSize(Directory dir) async {
+    var total = 0;
+    await for (final e in dir.list()) {
+      if (e is File) {
+        try {
+          total += await e.length();
+        } catch (_) {}
+      }
+    }
+    return total;
+  }
+}
diff --git a/app/lib/core/network/api_client.dart b/app/lib/core/network/api_client.dart
index 4e31b8f..510d88a 100644
--- a/app/lib/core/network/api_client.dart
+++ b/app/lib/core/network/api_client.dart
@@ -199,49 +199,52 @@ class _ErrorInterceptor extends Interceptor {
     final apiError = err.error;
     final status = err.response?.statusCode;
 
-    // 401：静默刷新重试一次
+    // 401：静默刷新重试一次；无法刷新（无 refresh / 刷新被拒 / 重试仍 401）
+    // 统一按会话失效处理，否则 APP 会卡在"本地有 user 但 access 已过期"的
+    // 僵尸登录态：我的页正常显示资料卡，点会员/钱包等全部 401 加载失败
     if (status == 401 &&
-        err.requestOptions.extra['retried'] != true &&
-        TokenStore.refreshToken != null) {
-      String? newToken;
-      try {
-        newToken = await _refreshToken();
-      } on ApiException catch (refreshErr) {
-        // 刷新请求本身网络失败：不清登录态，透传错误
-        return handler.next(DioException(
-          requestOptions: err.requestOptions,
-          error: refreshErr,
-        ));
-      }
-      if (newToken != null) {
+        err.requestOptions.extra['retried'] != true) {
+      if (TokenStore.refreshToken != null) {
+        String? newToken;
         try {
-          final opts = err.requestOptions;
-          opts.extra['retried'] = true;
-          opts.headers['Authorization'] = 'Bearer $newToken';
-          final resp = await ApiClient._dio.fetch<dynamic>(opts);
-          return handler.resolve(resp);
-        } on DioException catch (retryErr) {
-          final retryApi = retryErr.error;
-          final retryStatus = retryErr.response?.statusCode;
-          // 重试后仍是鉴权失败（401 / 1002）→ 确认会话失效，登出；
-          // 其余失败（网络抖动、业务错误等）不清登录态，直接透传错误
-          final stillAuthFailed = retryStatus == 401 ||
-              (retryApi is ApiException && retryApi.isUnauthorized);
-          if (!stillAuthFailed) {
-            return handler.next(DioException(
-              requestOptions: err.requestOptions,
-              error: retryApi is ApiException
-                  ? retryApi
-                  : ApiException(-1, '网络异常，请稍后重试'),
-            ));
-          }
-        } catch (_) {
-          // 非 Dio 失败：视为网络异常，不清登录态
+          newToken = await _refreshToken();
+        } on ApiException catch (refreshErr) {
+          // 刷新请求本身网络失败：不清登录态，透传错误
           return handler.next(DioException(
             requestOptions: err.requestOptions,
-            error: ApiException(-1, '网络异常，请稍后重试'),
+            error: refreshErr,
           ));
         }
+        if (newToken != null) {
+          try {
+            final opts = err.requestOptions;
+            opts.extra['retried'] = true;
+            opts.headers['Authorization'] = 'Bearer $newToken';
+            final resp = await ApiClient._dio.fetch<dynamic>(opts);
+            return handler.resolve(resp);
+          } on DioException catch (retryErr) {
+            final retryApi = retryErr.error;
+            final retryStatus = retryErr.response?.statusCode;
+            // 重试后仍是鉴权失败（401 / 1002）→ 确认会话失效，登出；
+            // 其余失败（网络抖动、业务错误等）不清登录态，直接透传错误
+            final stillAuthFailed = retryStatus == 401 ||
+                (retryApi is ApiException && retryApi.isUnauthorized);
+            if (!stillAuthFailed) {
+              return handler.next(DioException(
+                requestOptions: err.requestOptions,
+                error: retryApi is ApiException
+                    ? retryApi
+                    : ApiException(-1, '网络异常，请稍后重试'),
+              ));
+            }
+          } catch (_) {
+            // 非 Dio 失败：视为网络异常，不清登录态
+            return handler.next(DioException(
+              requestOptions: err.requestOptions,
+              error: ApiException(-1, '网络异常，请稍后重试'),
+            ));
+          }
+        }
       }
       await TokenStore.clear();
       ApiClient.onSessionExpired?.call();
diff --git a/app/lib/core/player/feed_player_pool.dart b/app/lib/core/player/feed_player_pool.dart
index 7092802..3ff41b2 100644
--- a/app/lib/core/player/feed_player_pool.dart
+++ b/app/lib/core/player/feed_player_pool.dart
@@ -3,6 +3,8 @@ import 'dart:async';
 import 'package:media_kit/media_kit.dart';
 import 'package:media_kit_video/media_kit_video.dart';
 
+import '../media/local_media_server.dart';
+
 /// 一个播放槽位：Player + 视图控制器 + 当前绑定的视频
 class PlayerSlot {
   PlayerSlot(this.player);
@@ -44,6 +46,20 @@ class FeedPlayerPool {
   int _currentIndex = 0;
   int get currentIndex => _currentIndex;
 
+  /// 代际计数器：每次 bindWindow 自增，await 恢复后校验，过期调用直接退出。
+  /// 快速连划时多个 bindWindow 并发 await open，无互斥会导致旧调用恢复后
+  /// 误 play 装有旧媒体的槽位（幽灵声音来源）。
+  int _generation = 0;
+
+  /// 是否挂起（切出首页 Tab / App 退后台）：挂起期间 bindWindow 的 open
+  /// 完成后不允许自动 play —— 否则「先暂停、open 后完成又 play」的竞态
+  /// 会让视频在后台继续出声（切到"我的"听到同一视频声音的根因）
+  bool _suspended = false;
+
+  /// 最近一次 bindWindow（resume 时需等在途 open 完成再 play，避免 play 被
+  /// open(play:false) 内部的 pause 覆盖导致恢复后不播）
+  Future<void>? _pendingBind;
+
   /// 初始化（创建 3 槽位并订阅各自进度流）
   void init() {
     for (var i = 0; i < slotCount; i++) {
@@ -65,26 +81,40 @@ class FeedPlayerPool {
   bool get isCurrentPlaying => currentSlot.player.state.playing;
 
   /// 绑定窗口：index 为当前页；items 为已解析好播放地址的窗口数据源
-  Future<void> bindWindow(int index, List<({int videoId, String url})> items) async {
+  ///
+  /// 窗口策略 [index, index+1]：只保留当前页（播放）和下一页（预缓冲）。
+  /// 上一页槽位 stop 清空：一是满足"划走即停止缓存下载"（pause 不停止缓冲，
+  /// stop 才断开），二是 stop 后槽内无媒体，即使误 play 也不会出声（防幽灵）。
+  Future<void> bindWindow(int index, List<({int videoId, String url})> items) {
+    final fut = _bindWindow(index, items);
+    _pendingBind = fut;
+    return fut;
+  }
+
+  Future<void> _bindWindow(
+      int index, List<({int videoId, String url})> items) async {
+    final gen = ++_generation;
     // 1. 先切换当前页指针（currentSlot / isCurrentPlaying / 完成回调都依赖它）
     _currentIndex = index;
 
-    // 窗口内应保留的槽位集合 [index-1, index, index+1]
+    // 窗口内应保留的槽位集合 [index, index+1]
     final activeSet = <int>{};
-    for (var offset = -1; offset <= 1; offset++) {
+    for (var offset = 0; offset <= 1; offset++) {
       final i = index + offset;
       if (i >= 0 && i < items.length) activeSet.add(slotOf(i));
     }
 
     // 2. 立即静音（同步执行，不等后续网络 open）：
-    //    - 出窗槽位：stop（断音 + 清缓存），并复位
-    //    - 窗口内槽位：全部 pause（含刚划走的上一页，防止切页期间串音）
+    //    - 出窗槽位：stop（断音 + 断缓存 + 清媒体），并复位
+    //    - 窗口内非当前槽位：pause（下一页预缓冲不自动播）
     //    这一步必须早于任何 await，否则 open 新视频期间旧视频仍在出声
     for (var s = 0; s < slotCount; s++) {
       final slot = _slots[s];
       if (slot.videoId < 0) continue;
       if (activeSet.contains(s)) {
-        try { slot.player.pause(); } catch (_) {}
+        if (s != slotOf(index)) {
+          try { slot.player.pause(); } catch (_) {}
+        }
       } else {
         unawaited(slot.player.stop());
         slot.videoId = -1;
@@ -93,7 +123,7 @@ class FeedPlayerPool {
     }
 
     // 3. 窗口内槽位按需加载（open 完才 play）
-    for (var offset = -1; offset <= 1; offset++) {
+    for (var offset = 0; offset <= 1; offset++) {
       final i = index + offset;
       if (i < 0 || i >= items.length) continue;
       final slot = _slots[slotOf(i)];
@@ -102,14 +132,44 @@ class FeedPlayerPool {
       slot.videoId = item.videoId;
       slot.completeNotified = false;
       if (item.url.isNotEmpty) {
-        await slot.player.open(Media(item.url), play: false);
+        // 经本地代理：HLS 分片 1G LRU 缓存，回看命中缓存不再下载
+        await slot.player.open(Media(LocalMediaServer.I.wrap(item.url)), play: false);
+        // await 期间用户可能又翻页：本次绑定已过期，退出（最新绑定会接管）
+        if (gen != _generation) return;
       }
     }
 
-    // 4. 当前槽：播放
+    // 4. 当前槽：播放（播前再校验代际与挂起态，防过期调用/后台挂起时唤醒媒体）
+    if (gen != _generation || _suspended) return;
     currentSlot.player.play();
   }
 
+  /// 挂起（切出首页底部 Tab / App 退后台 / 切走当前策略）：
+  /// 立即暂停当前槽，并阻止在途 bindWindow 的 open 完成后自动播放
+  void suspend() {
+    _suspended = true;
+    try {
+      currentSlot.player.pause();
+    } catch (_) {}
+  }
+
+  /// 恢复（切回首页 / App 回前台 / 策略切回）：解除挂起；若 bind 仍在 open，
+  /// 等其完成后再 play，避免 play 被 open(play:false) 的内部 pause 覆盖
+  Future<void> resume() async {
+    _suspended = false;
+    final pending = _pendingBind;
+    if (pending != null) {
+      try {
+        await pending;
+      } catch (_) {}
+    }
+    if (!_suspended) {
+      try {
+        currentSlot.player.play();
+      } catch (_) {}
+    }
+  }
+
   /// 每槽位独立订阅：≥95% 或播完触发一次 complete 回调
   void _hookSlot(PlayerSlot slot) {
     var lastPosition = Duration.zero;
@@ -135,7 +195,7 @@ class FeedPlayerPool {
         }
       }
       // 自动循环（抖音/TikTok 式体验：当前槽播完从头再来）
-      if (slot == currentSlot) {
+      if (slot == currentSlot && !_suspended) {
         slot.player.seek(Duration.zero);
         slot.player.play();
       }
@@ -155,6 +215,22 @@ class FeedPlayerPool {
     }
   }
 
+  /// 全部停止并清空（进入全屏播放器前调用）：停音 + 断缓存 + 清媒体。
+  /// 与 pause 不同，stop 后缓存下载断开，且槽内无媒体不会幽灵出声。
+  /// 返回 Feed 后需重新 bindWindow 恢复当前页。
+  void stopAll() {
+    // 使所有进行中的 bindWindow 过期（其 await 恢复后不会再 play）
+    _generation++;
+    // stopAll 后通常跟着 rebind 重新播放（如从登录页返回），解除挂起态
+    _suspended = false;
+    for (final slot in _slots) {
+      if (slot.videoId < 0) continue;
+      unawaited(slot.player.stop());
+      slot.videoId = -1;
+      slot.completeNotified = false;
+    }
+  }
+
   /// 释放全部资源（Feed 页 dispose 时调用）
   Future<void> dispose() async {
     for (final sub in _subs) {
diff --git a/app/lib/main.dart b/app/lib/main.dart
index 87244aa..773715e 100644
--- a/app/lib/main.dart
+++ b/app/lib/main.dart
@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:media_kit/media_kit.dart';
 
+import 'core/media/download_manager.dart';
+import 'core/media/local_media_server.dart';
 import 'core/storage/local_store.dart';
 import 'core/storage/search_history_store.dart';
 import 'core/storage/watch_dedup_store.dart';
@@ -22,8 +24,32 @@ Future<void> main() async {
   await SearchHistoryStore.init();
   // 观看上报去重（持久化；不初始化则观看计费/游客免费额度链路失效）
   await WatchDedupStore.init();
+  // 本地媒体服务：HLS 1G 分片缓存（回看免下载）+ 已下载视频离线播放
+  await LocalMediaServer.I.init();
 
-  runApp(const ProviderScope(child: VideoApp()));
+  runApp(ProviderScope(
+    overrides: const [],
+    child: const _AppInitializer(),
+  ));
+}
+
+/// 初始化需要 Provider 环境的单例（下载管理器扫描本地已下载列表）
+class _AppInitializer extends ConsumerStatefulWidget {
+  const _AppInitializer();
+
+  @override
+  ConsumerState<_AppInitializer> createState() => _AppInitializerState();
+}
+
+class _AppInitializerState extends ConsumerState<_AppInitializer> {
+  @override
+  void initState() {
+    super.initState();
+    ref.read(downloadManagerProvider.notifier).init();
+  }
+
+  @override
+  Widget build(BuildContext context) => const VideoApp();
 }
 
 class VideoApp extends ConsumerWidget {
diff --git a/app/lib/providers/auth_provider.dart b/app/lib/providers/auth_provider.dart
index 310f72b..2ba811b 100644
--- a/app/lib/providers/auth_provider.dart
+++ b/app/lib/providers/auth_provider.dart
@@ -36,6 +36,13 @@ class AuthNotifier extends StateNotifier<AuthState> {
       state = state.copyWith(restored: true);
       return;
     }
+    // 数据完整性防线：有 access 无 refresh 是不完整登录态（2h 后必然 401
+    // 且无法静默刷新），直接清理回游客态引导重新登录，避免僵尸登录态
+    if (TokenStore.refreshToken == null || TokenStore.refreshToken!.isEmpty) {
+      await TokenStore.clear();
+      state = state.copyWith(restored: true);
+      return;
+    }
     try {
       final user = await UserService.fetchMe();
       state = AuthState(user: user, restored: true);
diff --git a/app/lib/providers/feed_provider.dart b/app/lib/providers/feed_provider.dart
index bfec70a..b26fc95 100644
--- a/app/lib/providers/feed_provider.dart
+++ b/app/lib/providers/feed_provider.dart
@@ -14,7 +14,9 @@ import 'auth_provider.dart';
 enum FeedStrategy {
   recommend('recommend', '推荐'),
   latest('latest', '最新'),
-  hot('hot', '热度');
+  hot('hot', '热度'),
+  liked('liked', '口碑'),
+  viewed('viewed', '热播');
 
   const FeedStrategy(this.apiValue, this.label);
 
@@ -22,6 +24,15 @@ enum FeedStrategy {
   final String label;
 }
 
+/// Feed 顶部当前选中的策略：HomeShell 切底部 Tab 回来时，
+/// 只恢复该策略对应的播放器池（其余池保持挂起，防止幽灵声）
+final activeFeedStrategyProvider =
+    StateProvider<FeedStrategy>((_) => FeedStrategy.recommend);
+
+/// 首页底部 Tab 当前是否可见：App 回前台时仅在可见状态下恢复播放
+/// （否则在"我的"等页面退后台再回来会误恢复声音）
+final feedTabVisibleProvider = StateProvider<bool>((_) => true);
+
 /// Feed 页 UI 事件（Notifier 不持有 BuildContext，通过事件流驱动弹窗/Toast）
 sealed class FeedEvent {
   const FeedEvent();
@@ -148,6 +159,17 @@ class FeedNotifier extends StateNotifier<FeedState> {
     }
   }
 
+  /// 从全屏播放器返回后恢复：stopAll 清空了槽位，重新绑定当前页并播放。
+  /// 不上报观看（本次进入 Feed 时已上报过，且 _bindAndReport 有按日去重）。
+  Future<void> rebindCurrent() async {
+    final index = state.currentIndex;
+    if (index < 0 || index >= state.items.length) return;
+    await pool.bindWindow(
+      index,
+      [for (final v in state.items) (videoId: v.videoId, url: resolvePlayUrl(v))],
+    );
+  }
+
   /// 翻页：滑出即暂停、滑入自动播放并上报观看计费（《01-开发文档》5.3）
   void onPageChanged(int index) {
     // 立即静音全部非目标槽位，防止翻页动画期间多个视频同时出声
diff --git a/app/lib/router.dart b/app/lib/router.dart
index 4eaf6d4..7268adb 100644
--- a/app/lib/router.dart
+++ b/app/lib/router.dart
@@ -8,6 +8,7 @@ import '../screens/assets/assets_screen.dart';
 import '../screens/assets/withdraw_screen.dart';
 import '../screens/auth/login_screen.dart';
 import '../screens/auth/register_screen.dart';
+import '../screens/downloads/downloads_screen.dart';
 import '../screens/home/home_shell.dart';
 import '../screens/membership/membership_screen.dart';
 import '../screens/notification/notifications_screen.dart';
@@ -94,6 +95,11 @@ final routerProvider = Provider<GoRouter>((ref) {
         builder: (_, __) => VideoGridScreen.favorites(),
       ),
       GoRoute(path: '/mine/history', builder: (_, __) => const HistoryScreen()),
+      // 已下载（离线可看）
+      GoRoute(
+        path: '/mine/downloads',
+        builder: (_, __) => const DownloadsScreen(),
+      ),
       // 编辑资料 / 头像（页面内兜底未登录引导）
       GoRoute(
         path: '/profile/edit',
diff --git a/app/lib/screens/downloads/downloads_screen.dart b/app/lib/screens/downloads/downloads_screen.dart
new file mode 100644
index 0000000..d034389
--- /dev/null
+++ b/app/lib/screens/downloads/downloads_screen.dart
@@ -0,0 +1,135 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../core/media/download_manager.dart';
+import '../../core/theme/app_theme.dart';
+import '../../models/video_item.dart';
+
+/// 已下载视频列表（我的 → 已下载）：
+/// 下载中任务（进度/取消）+ 已完成列表（点击播放 / 左滑或长按删除）
+class DownloadsScreen extends ConsumerWidget {
+  const DownloadsScreen({super.key});
+
+  static String _fmtSize(int bytes) {
+    if (bytes >= 1 << 30) return '${(bytes / (1 << 30)).toStringAsFixed(2)} GB';
+    if (bytes >= 1 << 20) return '${(bytes / (1 << 20)).toStringAsFixed(1)} MB';
+    return '${(bytes / 1024).toStringAsFixed(0)} KB';
+  }
+
+  static String _fmtDuration(int seconds) {
+    final m = seconds ~/ 60;
+    final s = seconds % 60;
+    return '$m:${s.toString().padLeft(2, '0')}';
+  }
+
+  void _play(BuildContext context, DownloadItem item) {
+    context.push('/player',
+        extra: VideoItem(
+          videoId: item.videoId,
+          title: item.title,
+          coverUrl: item.coverUrl,
+          videoUrl: item.playUrl,
+          duration: item.duration,
+          author: VideoAuthor(userId: 0),
+        ));
+  }
+
+  Future<void> _confirmDelete(
+      BuildContext context, WidgetRef ref, DownloadItem item) async {
+    final ok = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('删除下载'),
+        content: Text('删除「${item.title}」？'),
+        actions: [
+          TextButton(
+              onPressed: () => Navigator.pop(ctx, false),
+              child: const Text('取消')),
+          TextButton(
+              onPressed: () => Navigator.pop(ctx, true),
+              child: const Text('删除', style: TextStyle(color: Colors.red))),
+        ],
+      ),
+    );
+    if (ok == true) {
+      ref.read(downloadManagerProvider.notifier).delete(item.videoId);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final state = ref.watch(downloadManagerProvider);
+    final downloading = state.progress.entries.toList();
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('已下载')),
+      body: ListView(
+        children: [
+          // 下载中
+          for (final e in downloading)
+            ListTile(
+              leading: const SizedBox(
+                width: 56, height: 56,
+                child: Center(child: CircularProgressIndicator(strokeWidth: 2)),
+              ),
+              title: Text('视频 #${e.key}',
+                  maxLines: 1, overflow: TextOverflow.ellipsis),
+              subtitle: Padding(
+                padding: const EdgeInsets.only(top: 6),
+                child: LinearProgressIndicator(value: e.value),
+              ),
+              trailing: Text('${(e.value * 100).toStringAsFixed(0)}%'),
+              onLongPress: () =>
+                  ref.read(downloadManagerProvider.notifier).cancel(e.key),
+            ),
+
+          if (downloading.isNotEmpty) const Divider(),
+
+          // 已完成
+          if (state.items.isEmpty && downloading.isEmpty)
+            const Padding(
+              padding: EdgeInsets.only(top: 120),
+              child: Center(
+                child: Text('暂无下载\n长按视频可下载',
+                    textAlign: TextAlign.center,
+                    style: TextStyle(color: AppColors.textWeak)),
+              ),
+            ),
+          for (final item in state.items)
+            ListTile(
+              contentPadding:
+                  const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
+              leading: ClipRRect(
+                borderRadius: BorderRadius.circular(6),
+                child: SizedBox(
+                  width: 72, height: 48,
+                  child: item.coverUrl.isNotEmpty
+                      ? CachedNetworkImage(
+                          imageUrl: item.coverUrl, fit: BoxFit.cover)
+                      : Container(
+                          color: Colors.grey[800],
+                          child: const Icon(Icons.play_circle_outline,
+                              color: Colors.white54),
+                        ),
+                ),
+              ),
+              title: Text(item.title.isEmpty ? '视频 #${item.videoId}' : item.title,
+                  maxLines: 1, overflow: TextOverflow.ellipsis),
+              subtitle: Text(
+                '${_fmtDuration(item.duration)} · ${_fmtSize(item.sizeBytes)}',
+                style: const TextStyle(fontSize: 12),
+              ),
+              trailing: IconButton(
+                icon: const Icon(Icons.delete_outline,
+                    color: AppColors.textWeak),
+                onPressed: () => _confirmDelete(context, ref, item),
+              ),
+              onTap: () => _play(context, item),
+            ),
+        ],
+      ),
+    );
+  }
+}
diff --git a/app/lib/screens/feed/feed_screen.dart b/app/lib/screens/feed/feed_screen.dart
index 2386d36..b3a2ba4 100644
--- a/app/lib/screens/feed/feed_screen.dart
+++ b/app/lib/screens/feed/feed_screen.dart
@@ -32,30 +32,46 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
   void initState() {
     super.initState();
     WidgetsBinding.instance.addObserver(this);
+    // 登记当前策略，HomeShell 切回首页时只恢复这个策略的播放器池
+    ref.read(activeFeedStrategyProvider.notifier).state = _strategy;
     // 监听计费/UI 事件（弹窗与 Toast 由 Notifier 事件流驱动）
     _eventSub = ref
         .read(feedProvider(_strategy).notifier)
         .events
         .listen(_handleEvent);
+    // 从登录页等返回时恢复播放：provider 全局常驻保留了列表，
+    // 但槽位已在 dispose 时 stopAll，需重新绑定（冷启动列表为空时为 no-op）
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (mounted) ref.read(feedProvider(_strategy).notifier).rebindCurrent();
+    });
   }
 
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
     _eventSub?.cancel();
+    // 离开 Feed 路由（如跳登录页）：彻底停止播放（断音+断缓存下载）。
+    // feedProvider 是全局常驻，不处理则播放器池在后台继续出声
+    ref.read(feedProvider(_strategy).notifier).pool.stopAll();
     _pageController.dispose();
     super.dispose();
   }
 
-  /// App 退后台暂停、回前台恢复播放
+  /// App 退后台挂起、回前台恢复播放（suspend/resume 防在途 open 竞态）
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     final notifier = ref.read(feedProvider(_strategy).notifier);
     if (state == AppLifecycleState.paused ||
         state == AppLifecycleState.inactive) {
-      notifier.pool.pauseCurrent();
+      notifier.pool.suspend();
     } else if (state == AppLifecycleState.resumed) {
-      notifier.pool.playCurrent();
+      // 仅在首页 Tab 可见时恢复（在"我的"等页面回前台不播）
+      if (ref.read(feedTabVisibleProvider)) {
+        unawaited(() async {
+          await notifier.pool.resume();
+          await notifier.rebindCurrent();
+        }());
+      }
     }
   }
 
@@ -73,15 +89,23 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
 
   void _switchStrategy(FeedStrategy next) {
     if (next == _strategy) return;
-    // 暂停旧策略播放，切换后新策略独立维护状态与播放器池
-    ref.read(feedProvider(_strategy).notifier).pool.pauseCurrent();
+    // 挂起旧策略池（防在途 open 完成后自动出声）
+    ref.read(feedProvider(_strategy).notifier).pool.suspend();
     setState(() => _strategy = next);
+    ref.read(activeFeedStrategyProvider.notifier).state = next;
     _eventSub?.cancel();
     _eventSub = ref
         .read(feedProvider(_strategy).notifier)
         .events
         .listen(_handleEvent);
     _pageController.jumpToPage(0);
+    // jumpToPage 触发新策略 bindWindow 后再 resume：等其在途 open 完成再播放，
+    // 同时解除新策略池可能残留的挂起态
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (mounted) {
+        unawaited(ref.read(feedProvider(_strategy).notifier).pool.resume());
+      }
+    });
   }
 
   /// 打开评论弹层：打开期间暂停当前播放，关闭后恢复
@@ -142,6 +166,7 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
                     onLike: notifier.toggleLike,
                     onFavorite: notifier.toggleFavorite,
                     onComment: _openComments,
+                    onReturnFromPlayer: notifier.rebindCurrent,
                   );
                 },
               ),
diff --git a/app/lib/screens/feed/widgets/feed_video_page.dart b/app/lib/screens/feed/widgets/feed_video_page.dart
index eb2b4be..db2a3e4 100644
--- a/app/lib/screens/feed/widgets/feed_video_page.dart
+++ b/app/lib/screens/feed/widgets/feed_video_page.dart
@@ -3,6 +3,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:share_plus/share_plus.dart';
 
+import '../../../core/media/download_manager.dart';
 import '../../../core/player/feed_player_pool.dart';
 import '../../../core/theme/app_theme.dart';
 import '../../../models/video_item.dart';
@@ -25,6 +26,7 @@ class FeedVideoPage extends ConsumerStatefulWidget {
     required this.onLike,
     this.onFavorite,
     this.onComment,
+    this.onReturnFromPlayer,
   });
 
   final VideoItem item;
@@ -35,6 +37,9 @@ class FeedVideoPage extends ConsumerStatefulWidget {
   final void Function(int videoId)? onFavorite;
   final void Function(VideoItem item)? onComment;
 
+  /// 从全屏播放器返回后的恢复回调（重新绑定 Feed 当前页）
+  final VoidCallback? onReturnFromPlayer;
+
   @override
   ConsumerState<FeedVideoPage> createState() => _FeedVideoPageState();
 }
@@ -89,7 +94,10 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
       shape: const RoundedRectangleBorder(
         borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
       ),
-      builder: (sheetContext) => Padding(
+      builder: (sheetContext) => Theme(
+        // 弹窗是白底，APP 主题为暗色（默认白字），需显式套用亮色主题
+        data: ThemeData.light(),
+        child: Padding(
         padding: const EdgeInsets.fromLTRB(20, 20, 20, 12),
         child: Column(
           mainAxisSize: MainAxisSize.min,
@@ -165,8 +173,38 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
                 _share();
               },
             ),
+
+            // 下载（已下载/下载中置灰）
+            Builder(builder: (_) {
+              final dm = ref.read(downloadManagerProvider);
+              final downloaded = dm.items
+                  .any((e) => e.videoId == widget.item.videoId);
+              final downloading =
+                  dm.progress.containsKey(widget.item.videoId);
+              return ListTile(
+                contentPadding: EdgeInsets.zero,
+                leading: Icon(downloaded
+                    ? Icons.check_circle_outline
+                    : Icons.download_outlined),
+                title: Text(downloaded
+                    ? '已下载'
+                    : (downloading ? '下载中…' : '下载')),
+                enabled: !downloaded && !downloading,
+                onTap: () {
+                  Navigator.of(sheetContext).pop();
+                  showTopToast(context, '开始下载，可在「我的 → 已下载」查看');
+                  ref
+                      .read(downloadManagerProvider.notifier)
+                      .start(widget.item)
+                      .catchError((_) {
+                    if (mounted) showTopToast(context, '下载失败，请重试');
+                  });
+                },
+              );
+            }),
           ],
         ),
+        ),
       ),
     );
   }
@@ -185,7 +223,9 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
       shape: const RoundedRectangleBorder(
         borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
       ),
-      builder: (_) => DraggableScrollableSheet(
+      builder: (_) => Theme(
+        data: ThemeData.light(),
+        child: DraggableScrollableSheet(
         initialChildSize: 0.6,
         minChildSize: 0.4,
         maxChildSize: 0.9,
@@ -273,6 +313,7 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
             ),
           ],
         ),
+        ),
       ),
     );
   }
@@ -287,10 +328,13 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
       duration: (ep['duration'] as num?)?.toInt() ?? 0,
       author: widget.item.author,
     );
-    // 先暂停 Feed 页播放器，再打开 SimplePlayerScreen
-    widget.pool.pauseExcept(slotIndex: -1);
+    // 彻底停止 Feed 层播放器：stopAll 断音 + 断缓存下载（pause 不停止缓冲）
+    widget.pool.stopAll();
     // ignore: use_build_context_synchronously
-    context.push('/player', extra: newItem);
+    context.push('/player', extra: newItem).then((_) {
+      // 从播放器返回：恢复 Feed 当前页（槽位已清空，需重新绑定）
+      if (mounted) widget.onReturnFromPlayer?.call();
+    });
   }
 
   @override
@@ -327,6 +371,7 @@ class _FeedVideoPageState extends ConsumerState<FeedVideoPage> {
               slotIndex: widget.slotIndex,
               coverUrl: widget.item.coverUrl,
               isCurrent: widget.isCurrent,
+              durationSeconds: widget.item.duration,
             ),
 
             // 双击爱心动画
diff --git a/app/lib/screens/feed/widgets/video_info_section.dart b/app/lib/screens/feed/widgets/video_info_section.dart
index 47bbe35..3fd397b 100644
--- a/app/lib/screens/feed/widgets/video_info_section.dart
+++ b/app/lib/screens/feed/widgets/video_info_section.dart
@@ -18,6 +18,13 @@ class VideoInfoSection extends StatefulWidget {
 class _VideoInfoSectionState extends State<VideoInfoSection> {
   bool _expanded = false;
 
+  static String _fmtSeconds(int seconds) {
+    final h = seconds ~/ 3600;
+    final m = ((seconds % 3600) ~/ 60).toString().padLeft(2, '0');
+    final s = (seconds % 60).toString().padLeft(2, '0');
+    return h > 0 ? '$h:$m:$s' : '$m:$s';
+  }
+
   @override
   Widget build(BuildContext context) {
     final item = widget.item;
@@ -37,7 +44,7 @@ class _VideoInfoSectionState extends State<VideoInfoSection> {
         ),
         const SizedBox(height: 8),
 
-        // 标题 + #标签（点击标签跳转标签视频页）
+        // 标题 + 时长 + #标签（点击标签跳转标签视频页）
         Wrap(
           crossAxisAlignment: WrapCrossAlignment.center,
           spacing: 6,
@@ -52,6 +59,25 @@ class _VideoInfoSectionState extends State<VideoInfoSection> {
                   shadows: [Shadow(color: Colors.black54, blurRadius: 4)],
                 ),
               ),
+            // 标题后显示视频时长
+            if (item.duration > 0)
+              Container(
+                padding:
+                    const EdgeInsets.symmetric(horizontal: 5, vertical: 1),
+                decoration: BoxDecoration(
+                  color: Colors.black38,
+                  borderRadius: BorderRadius.circular(4),
+                  border: Border.all(color: Colors.white24, width: 0.5),
+                ),
+                child: Text(
+                  _fmtSeconds(item.duration),
+                  style: const TextStyle(
+                    color: Colors.white70,
+                    fontSize: 11,
+                    shadows: [Shadow(color: Colors.black54, blurRadius: 4)],
+                  ),
+                ),
+              ),
             for (final tag in item.tags)
               GestureDetector(
                 onTap: () => context.push('/tags/${Uri.encodeComponent(tag)}'),
diff --git a/app/lib/screens/feed/widgets/video_player_view.dart b/app/lib/screens/feed/widgets/video_player_view.dart
index 98b48ba..56e67ee 100644
--- a/app/lib/screens/feed/widgets/video_player_view.dart
+++ b/app/lib/screens/feed/widgets/video_player_view.dart
@@ -14,6 +14,7 @@ class VideoPlayerView extends StatefulWidget {
     required this.slotIndex,
     required this.coverUrl,
     required this.isCurrent,
+    this.durationSeconds = 0,
   });
 
   final FeedPlayerPool pool;
@@ -23,6 +24,10 @@ class VideoPlayerView extends StatefulWidget {
   /// 该页是否为当前页（暂停图标只在当前页显示，避免划走后旧页残留大图标）
   final bool isCurrent;
 
+  /// DB 里的视频时长（秒）：流 duration 异常（如被当直播流报 0）时兜底，
+  /// 保证进度条/拖动可用
+  final int durationSeconds;
+
   @override
   State<VideoPlayerView> createState() => _VideoPlayerViewState();
 }
@@ -45,9 +50,15 @@ class _VideoPlayerViewState extends State<VideoPlayerView> {
     });
   }
 
+  /// 有效时长：流上报优先，异常（duration=0）回退 DB 时长
+  int get _totalMs {
+    final streamMs = _duration.inMilliseconds;
+    return streamMs > 0 ? streamMs : widget.durationSeconds * 1000;
+  }
+
   double get _value {
     if (_seeking) return _seekValue;
-    final total = _duration.inMilliseconds;
+    final total = _totalMs;
     if (total <= 0) return 0;
     final cur = _position.inMilliseconds.clamp(0, total);
     return cur / total;
@@ -66,7 +77,7 @@ class _VideoPlayerViewState extends State<VideoPlayerView> {
 
   void _onSeekEnd(double v) {
     setState(() => _seeking = false);
-    final totalMs = _duration.inMilliseconds;
+    final totalMs = _totalMs;
     if (totalMs > 0) {
       _slot.player.seek(Duration(milliseconds: (v * totalMs).round()));
     }
@@ -120,7 +131,7 @@ class _VideoPlayerViewState extends State<VideoPlayerView> {
             ),
           ),
 
-        // 抖音风格细进度条（贴底，常驻）
+        // 抖音风格细进度条（贴底，常驻；拖动时显示目标时间气泡）
         Positioned(
           left: 0, right: 0, bottom: 0,
           child: _ThinProgressBar(
@@ -128,6 +139,7 @@ class _VideoPlayerViewState extends State<VideoPlayerView> {
             onChanged: _onSeek,
             onChangeStart: _onSeekStart,
             onChangeEnd: _onSeekEnd,
+            totalMs: _totalMs,
           ),
         ),
       ],
@@ -141,16 +153,29 @@ class _ThinProgressBar extends StatefulWidget {
     required this.onChanged,
     required this.onChangeStart,
     required this.onChangeEnd,
+    this.totalMs = 0,
   });
   final double value;
   final ValueChanged<double> onChanged;
   final ValueChanged<double> onChangeStart;
   final ValueChanged<double> onChangeEnd;
 
+  /// 视频总时长（毫秒）：拖动气泡显示目标位置用时/分/秒
+  final int totalMs;
+
   @override
   State<_ThinProgressBar> createState() => _ThinProgressBarState();
 }
 
+/// 拖动气泡时间：>1 小时显示 x时xx分xx秒，否则 xx分xx秒
+String _seekBubbleText(double value, int totalMs) {
+  final d = Duration(milliseconds: (value * totalMs).round());
+  final h = d.inHours;
+  final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
+  final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
+  return h > 0 ? '$h时$m分$s秒' : '$m分$s秒';
+}
+
 class _ThinProgressBarState extends State<_ThinProgressBar> {
   bool _dragging = false;
   double _dragValue = 0;
@@ -187,15 +212,44 @@ class _ThinProgressBarState extends State<_ThinProgressBar> {
             setState(() => _dragging = false);
             widget.onChangeEnd(_dragValue.clamp(0.0, 1.0));
           },
-          child: Container(
+          child: SizedBox(
             height: 32, // 触摸热区 32px（视觉 2px，好点）
-            alignment: Alignment.bottomCenter,
-            child: CustomPaint(
-              painter: _ProgressPainter(
-                value: _dragging ? _dragValue : widget.value,
-                dragging: _dragging,
-              ),
-              size: Size(w, _dragging ? 20 : 4),
+            child: Stack(
+              clipBehavior: Clip.none,
+              alignment: Alignment.bottomCenter,
+              children: [
+                Align(
+                  alignment: Alignment.bottomCenter,
+                  child: CustomPaint(
+                    painter: _ProgressPainter(
+                      value: _dragging ? _dragValue : widget.value,
+                      dragging: _dragging,
+                    ),
+                    size: Size(w, _dragging ? 20 : 4),
+                  ),
+                ),
+                // 拖动中的时间气泡（跟随 thumb，两端自动夹在屏内）
+                if (_dragging && widget.totalMs > 0)
+                  Positioned(
+                    bottom: 14,
+                    left: (_dragValue * w - 38)
+                        .clamp(0.0, (w - 76).clamp(0.0, w)),
+                    child: Container(
+                      width: 76,
+                      height: 24,
+                      alignment: Alignment.center,
+                      decoration: BoxDecoration(
+                        color: Colors.black.withValues(alpha: 0.82),
+                        borderRadius: BorderRadius.circular(6),
+                      ),
+                      child: Text(
+                        _seekBubbleText(_dragValue, widget.totalMs),
+                        style: const TextStyle(
+                            color: Colors.white, fontSize: 11.5),
+                      ),
+                    ),
+                  ),
+              ],
             ),
           ),
         );
diff --git a/app/lib/screens/home/home_shell.dart b/app/lib/screens/home/home_shell.dart
index 94786c8..274b545 100644
--- a/app/lib/screens/home/home_shell.dart
+++ b/app/lib/screens/home/home_shell.dart
@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
@@ -26,16 +28,24 @@ class _HomeShellState extends ConsumerState<HomeShell> {
 
   void _onTabSelected(int i) {
     if (i == _index) return;
-    // 切到非首页：暂停所有 Feed 策略的播放器池（IndexedStack 保活，否则声音会继续）
+    // 切到非首页：挂起所有 Feed 策略的播放器池（IndexedStack 保活，
+    // suspend 会同时阻止在途 open 完成后自动播放，杜绝后台幽灵声）
     if (i != 0) {
       for (final s in _feedStrategies) {
-        ref.read(feedProvider(s).notifier).pool.pauseCurrent();
+        ref.read(feedProvider(s).notifier).pool.suspend();
       }
     }
+    ref.read(feedTabVisibleProvider.notifier).state = i == 0;
     setState(() => _index = i);
-    // 切回首页：恢复当前策略播放（FeedScreen 内部 _strategy 是 recommend）
+    // 切回首页：只恢复当前选中策略的池（其余保持挂起）
     if (i == 0) {
-      ref.read(feedProvider(FeedStrategy.recommend).notifier).pool.playCurrent();
+      final active = ref.read(activeFeedStrategyProvider);
+      final notifier = ref.read(feedProvider(active).notifier);
+      unawaited(() async {
+        await notifier.pool.resume();
+        // 兜底：挂起期间首屏 bind 可能尚未发生，补一次当前页绑定播放
+        await notifier.rebindCurrent();
+      }());
     }
   }
 
diff --git a/app/lib/screens/player/simple_player_screen.dart b/app/lib/screens/player/simple_player_screen.dart
index 6c5b9de..ede8470 100644
--- a/app/lib/screens/player/simple_player_screen.dart
+++ b/app/lib/screens/player/simple_player_screen.dart
@@ -8,6 +8,8 @@ import 'package:media_kit_video/media_kit_video.dart';
 import 'package:share_plus/share_plus.dart';
 
 import '../../core/config/test_stream.dart';
+import '../../core/media/download_manager.dart';
+import '../../core/media/local_media_server.dart';
 import '../../core/network/api_exception.dart';
 import '../../core/storage/watch_dedup_store.dart';
 import '../../core/theme/app_theme.dart';
@@ -100,7 +102,9 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
   }
 
   void _open(VideoItem item) {
-    _player.open(Media(resolvePlayUrl(item)), play: true);
+    // 本地已下载地址（127.0.0.1）原样播放；网络 m3u8 经本地代理走 1G 分片缓存
+    _player.open(Media(LocalMediaServer.I.wrap(resolvePlayUrl(item))),
+        play: true);
   }
 
   void _toggle() {
@@ -317,7 +321,10 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
       shape: const RoundedRectangleBorder(
         borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
       ),
-      builder: (sheetContext) => Padding(
+      builder: (sheetContext) => Theme(
+        // 弹窗是白底，APP 主题为暗色（默认白字），需显式套用亮色主题
+        data: ThemeData.light(),
+        child: Padding(
         padding: const EdgeInsets.fromLTRB(20, 20, 20, 12),
         child: Column(
           mainAxisSize: MainAxisSize.min,
@@ -395,21 +402,64 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
                 _share();
               },
             ),
+
+            // 下载（已下载/下载中置灰；本地已下载视频不再重复下载）
+            Builder(builder: (_) {
+              final dm = ref.read(downloadManagerProvider);
+              final downloaded =
+                  dm.items.any((e) => e.videoId == _currentItem.videoId);
+              final downloading =
+                  dm.progress.containsKey(_currentItem.videoId);
+              final isLocal = _currentItem.videoUrl.contains('127.0.0.1');
+              return ListTile(
+                contentPadding: EdgeInsets.zero,
+                leading: Icon(downloaded || isLocal
+                    ? Icons.check_circle_outline
+                    : Icons.download_outlined),
+                title: Text(downloaded || isLocal
+                    ? '已下载'
+                    : (downloading ? '下载中…' : '下载')),
+                enabled: !downloaded && !downloading && !isLocal,
+                onTap: () {
+                  Navigator.of(sheetContext).pop();
+                  showTopToast(context, '开始下载，可在「我的 → 已下载」查看');
+                  ref
+                      .read(downloadManagerProvider.notifier)
+                      .start(_currentItem)
+                      .catchError((_) {
+                    if (mounted) showTopToast(context, '下载失败，请重试');
+                  });
+                },
+              );
+            }),
           ],
         ),
+        ),
       ),
     );
   }
 
   // ---------- 进度条 ----------
 
+  /// 有效时长：流上报优先，异常（如被当直播 duration=0）回退到 DB 时长
+  Duration get _effectiveDuration => _duration.inMilliseconds > 0
+      ? _duration
+      : Duration(seconds: _currentItem.duration);
+
   double get _sliderValue {
     if (_seeking) return _seekValue;
-    if (_duration.inMilliseconds <= 0) return 0;
-    return (_position.inMilliseconds / _duration.inMilliseconds)
+    if (_effectiveDuration.inMilliseconds <= 0) return 0;
+    return (_position.inMilliseconds / _effectiveDuration.inMilliseconds)
         .clamp(0.0, 1.0);
   }
 
+  static String _fmtDuration(Duration d) {
+    final h = d.inHours;
+    final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
+    final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
+    return h > 0 ? '$h:$m:$s' : '$m:$s';
+  }
+
   void _onSeekStart(double v) {
     setState(() {
       _seeking = true;
@@ -423,9 +473,9 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
 
   void _onSeekEnd(double v) {
     setState(() => _seeking = false);
-    if (_duration.inMilliseconds > 0) {
+    if (_effectiveDuration.inMilliseconds > 0) {
       final target = Duration(
-        milliseconds: (v * _duration.inMilliseconds).round(),
+        milliseconds: (v * _effectiveDuration.inMilliseconds).round(),
       );
       _player.seek(target);
     }
@@ -591,14 +641,45 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
             ),
           ),
 
-          // ---------- 进度条：抖音风格一条细线 ----------
+          // ---------- 进度条：抖音风格一条细线 + 时间刻度 ----------
           Positioned(
             left: 0, right: 0, bottom: 0,
-            child: _ThinProgressBar(
-              value: _sliderValue,
-              onChanged: _onSeek,
-              onChangeStart: _onSeekStart,
-              onChangeEnd: _onSeekEnd,
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                // 时间刻度：左当前（拖动时为目标位置），右总时长
+                Padding(
+                  padding:
+                      const EdgeInsets.symmetric(horizontal: 14, vertical: 2),
+                  child: Row(
+                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                    children: [
+                      Text(
+                        _fmtDuration(_seeking
+                            ? Duration(
+                                milliseconds: (_seekValue *
+                                        _effectiveDuration.inMilliseconds)
+                                    .round())
+                            : _position),
+                        style: const TextStyle(
+                            color: Colors.white70, fontSize: 11),
+                      ),
+                      Text(
+                        _fmtDuration(_effectiveDuration),
+                        style: const TextStyle(
+                            color: Colors.white70, fontSize: 11),
+                      ),
+                    ],
+                  ),
+                ),
+                _ThinProgressBar(
+                  value: _sliderValue,
+                  onChanged: _onSeek,
+                  onChangeStart: _onSeekStart,
+                  onChangeEnd: _onSeekEnd,
+                  totalMs: _effectiveDuration.inMilliseconds,
+                ),
+              ],
             ),
           ),
         ],
@@ -648,7 +729,9 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
       shape: const RoundedRectangleBorder(
         borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
       ),
-      builder: (_) => DraggableScrollableSheet(
+      builder: (_) => Theme(
+        data: ThemeData.light(),
+        child: DraggableScrollableSheet(
         initialChildSize: 0.6,
         minChildSize: 0.4,
         maxChildSize: 0.9,
@@ -744,6 +827,7 @@ class _SimplePlayerScreenState extends ConsumerState<SimplePlayerScreen> {
             ),
           ],
         ),
+        ),
       ),
     );
   }
@@ -757,6 +841,7 @@ class _ThinProgressBar extends StatefulWidget {
     required this.onChanged,
     required this.onChangeStart,
     required this.onChangeEnd,
+    this.totalMs = 0,
   });
 
   final double value;
@@ -764,10 +849,22 @@ class _ThinProgressBar extends StatefulWidget {
   final ValueChanged<double> onChangeStart;
   final ValueChanged<double> onChangeEnd;
 
+  /// 视频总时长（毫秒）：拖动时气泡显示目标位置用时/分/秒
+  final int totalMs;
+
   @override
   State<_ThinProgressBar> createState() => _ThinProgressBarState();
 }
 
+/// 拖动气泡时间：>1 小时显示 x时xx分xx秒，否则 xx分xx秒
+String _seekBubbleText(double value, int totalMs) {
+  final d = Duration(milliseconds: (value * totalMs).round());
+  final h = d.inHours;
+  final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
+  final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
+  return h > 0 ? '$h时$m分$s秒' : '$m分$s秒';
+}
+
 class _ThinProgressBarState extends State<_ThinProgressBar> {
   bool _dragging = false;
   double _dragValue = 0;
@@ -805,19 +902,48 @@ class _ThinProgressBarState extends State<_ThinProgressBar> {
             _start(d.localPosition, w);
           },
           onTapUp: (_) => _end(w),
-          child: Container(
+          child: SizedBox(
             height: 32, // 触摸热区 32px（比视觉线条大，提升交互）
-            alignment: Alignment.bottomCenter,
-            child: AnimatedContainer(
-              duration: const Duration(milliseconds: 150),
-              height: _dragging ? 4 : 2,
-              width: double.infinity,
-              child: CustomPaint(
-                painter: _ProgressPainter(
-                  value: _dragging ? _dragValue : widget.value,
-                  dragging: _dragging,
+            child: Stack(
+              clipBehavior: Clip.none,
+              alignment: Alignment.bottomCenter,
+              children: [
+                Align(
+                  alignment: Alignment.bottomCenter,
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 150),
+                    height: _dragging ? 4 : 2,
+                    width: double.infinity,
+                    child: CustomPaint(
+                      painter: _ProgressPainter(
+                        value: _dragging ? _dragValue : widget.value,
+                        dragging: _dragging,
+                      ),
+                    ),
+                  ),
                 ),
-              ),
+                // 拖动中的时间气泡（跟随 thumb，两端自动夹在屏内）
+                if (_dragging && widget.totalMs > 0)
+                  Positioned(
+                    bottom: 14,
+                    left: (_dragValue * w - 38)
+                        .clamp(0.0, (w - 76).clamp(0.0, w)),
+                    child: Container(
+                      width: 76,
+                      height: 24,
+                      alignment: Alignment.center,
+                      decoration: BoxDecoration(
+                        color: Colors.black.withValues(alpha: 0.82),
+                        borderRadius: BorderRadius.circular(6),
+                      ),
+                      child: Text(
+                        _seekBubbleText(_dragValue, widget.totalMs),
+                        style: const TextStyle(
+                            color: Colors.white, fontSize: 11.5),
+                      ),
+                    ),
+                  ),
+              ],
             ),
           ),
         );
diff --git a/app/lib/screens/profile/mine_screen.dart b/app/lib/screens/profile/mine_screen.dart
index 052c3b2..2920abb 100644
--- a/app/lib/screens/profile/mine_screen.dart
+++ b/app/lib/screens/profile/mine_screen.dart
@@ -142,6 +142,11 @@ class _MineScreenState extends ConsumerState<MineScreen> {
             label: '观看历史',
             onTap: () => context.push('/mine/history'),
           ),
+          _Entry(
+            icon: Icons.download_outlined,
+            label: '已下载',
+            onTap: () => context.push('/mine/downloads'),
+          ),
           _Entry(
             icon: Icons.account_balance_wallet_outlined,
             label: '钱包',
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 9153c4d..8ddce93 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -2,7 +2,7 @@ name: video_app
 description: "短视频应用（Flutter，iOS/Android 双端）"
 publish_to: 'none'
 
-version: 1.2.0+13
+version: 1.3.7+23
 
 environment:
   sdk: ^3.9.2
@@ -59,6 +59,11 @@ dependencies:
   image_picker: ^1.1.2
   # 外部浏览器/商店跳转（强制更新下载页）
   url_launcher: ^6.3.1
+  # 本地媒体服务：HLS 分片缓存（1G LRU）+ 已下载视频离线播放
+  shelf: ^1.4.2
+  shelf_router: ^1.1.4
+  path_provider: ^2.1.5
+  path: ^1.9.0
   tobias: ^5.3.4
   fluwx: ^5.7.7
 
diff --git a/deploy.sh b/deploy.sh
index 7eb3b9f..bbea093 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -41,10 +41,10 @@ VERSION_CODE="${PUBSPEC_VERSION##*+}"      # 2
 echo "   pubspec: $VERSION_NAME  versionCode=$VERSION_CODE"
 
 # DB 当前 latest_version_code（用于参考）
-DB_CURRENT_CODE=$(mysql -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -Nse \
+DB_CURRENT_CODE=$(mysql -h 127.0.0.1 -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -Nse \
   "SELECT JSON_UNQUOTE(JSON_EXTRACT(config_value, '$.latest_version_code')) \
    FROM system_configs WHERE config_key='app.version.android';" 2>/dev/null || echo "0")
-DB_CURRENT_VER=$(mysql -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -Nse \
+DB_CURRENT_VER=$(mysql -h 127.0.0.1 -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -Nse \
   "SELECT JSON_UNQUOTE(JSON_EXTRACT(config_value, '$.latest_version')) \
    FROM system_configs WHERE config_key='app.version.android';" 2>/dev/null || echo "unknown")
 echo "   DB 当前 latest: $DB_CURRENT_VER  code=$DB_CURRENT_CODE"
@@ -65,6 +65,10 @@ cd "$APP_DIR"
 flutter build apk --release 2>&1 | tail -5
 echo
 
+# 停掉 Gradle Daemon（编译残留常驻 ~3GB 内存，下次编译会自动重启）
+echo "▶ 清理 Gradle Daemon..."
+(cd "$APP_DIR/android" && ./gradlew --stop >/dev/null 2>&1) || true
+
 # --------------------------------------------------------------------------
 # 4. 部署 APK
 # --------------------------------------------------------------------------
@@ -84,15 +88,21 @@ if [ -n "${1:-}" ]; then
   NEW_CODE="$1"
 fi
 
-UPDATE_JSON="{\"latest_version\":\"$VERSION_NAME\",\"latest_version_code\":$NEW_CODE,\"min_version_code\":1,\"update_url\":\"https://h5.256kb.top/downloads/video-app.apk\",\"notice\":\"\"}"
+# 读出当前 min_version_code，发版时保留不重置
+MIN_CODE=$(mysql -h 127.0.0.1 -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -Nse \
+  "SELECT JSON_UNQUOTE(JSON_EXTRACT(config_value, '$.min_version_code')) \
+   FROM system_configs WHERE config_key='app.version.android';" 2>/dev/null || echo "")
+MIN_CODE="${MIN_CODE:-1}"
+
+UPDATE_JSON="{\"latest_version\":\"$VERSION_NAME\",\"latest_version_code\":$NEW_CODE,\"min_version_code\":$MIN_CODE,\"update_url\":\"https://h5.256kb.top/downloads/video-app.apk\",\"notice\":\"\"}"
 
 echo "▶ 同步 DB app.version.android → $UPDATE_JSON"
-mysql -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -e "
+mysql -h 127.0.0.1 -u "$DB_USER" -p"$DB_PASS" -P "$DB_PORT" "$DB_NAME" -e "
   INSERT INTO system_configs (config_key, config_value, description)
   VALUES ('app.version.android', '$UPDATE_JSON', 'Android 版本检查配置')
   ON DUPLICATE KEY UPDATE config_value=VALUES(config_value), updated_at=NOW();
 " 2>/dev/null
-redis-cli DEL config:system >/dev/null 2>&1 || true
+docker exec my-redis redis-cli DEL config:system >/dev/null 2>&1 || true
 
 echo
 echo "✅ 发版完成"
diff --git a/server/alembic/versions/b3c7d9e21f4a_add_collection_records.py b/server/alembic/versions/b3c7d9e21f4a_add_collection_records.py
new file mode 100644
index 0000000..6e341fa
--- /dev/null
+++ b/server/alembic/versions/b3c7d9e21f4a_add_collection_records.py
@@ -0,0 +1,33 @@
+"""add collection_records
+
+Revision ID: b3c7d9e21f4a
+Revises: d659ecc1b6e7
+Create Date: 2026-10-17 12:00:00.000000
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+revision = 'b3c7d9e21f4a'
+down_revision = 'd659ecc1b6e7'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table('collection_records',
+    sa.Column('id', mysql.BIGINT(unsigned=True), autoincrement=True, nullable=False),
+    sa.Column('source_key', sa.String(length=50), nullable=False, comment='内容源标识'),
+    sa.Column('source_id', mysql.BIGINT(unsigned=True), nullable=False, comment='源站内容 id'),
+    sa.Column('series_id', mysql.BIGINT(unsigned=True), nullable=False, comment='本站系列 id'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('now()'), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index('uk_source', 'collection_records', ['source_key', 'source_id'], unique=True)
+    op.create_index('idx_record_series', 'collection_records', ['series_id'], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index('idx_record_series', table_name='collection_records')
+    op.drop_index('uk_source', table_name='collection_records')
+    op.drop_table('collection_records')
diff --git a/server/alembic/versions/c8f2a15e93b7_add_collection_sources.py b/server/alembic/versions/c8f2a15e93b7_add_collection_sources.py
new file mode 100644
index 0000000..f497576
--- /dev/null
+++ b/server/alembic/versions/c8f2a15e93b7_add_collection_sources.py
@@ -0,0 +1,37 @@
+"""add collection_sources + collection_records.video_id
+
+Revision ID: c8f2a15e93b7
+Revises: b3c7d9e21f4a
+Create Date: 2026-10-17 13:00:00.000000
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+revision = 'c8f2a15e93b7'
+down_revision = 'b3c7d9e21f4a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table('collection_sources',
+    sa.Column('id', mysql.BIGINT(unsigned=True), autoincrement=True, nullable=False),
+    sa.Column('name', sa.String(length=50), nullable=False, comment='分类名'),
+    sa.Column('list_url', sa.String(length=500), nullable=False, comment='列表URL模板, {{page}}为页码占位'),
+    sa.Column('category_id', mysql.INTEGER(unsigned=True), nullable=False, comment='本站分类id'),
+    sa.Column('status', mysql.SMALLINT(), nullable=False, server_default='1', comment='1启用 0停用'),
+    sa.Column('last_sync_at', sa.DateTime(), nullable=True),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('now()'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('now()'), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('list_url', name='uk_list_url')
+    )
+    op.add_column('collection_records', sa.Column('video_id', mysql.BIGINT(unsigned=True), nullable=True, comment='本站视频id(单视频类采集)'))
+    op.alter_column('collection_records', 'series_id', existing_type=mysql.BIGINT(unsigned=True), nullable=True)
+
+
+def downgrade() -> None:
+    op.alter_column('collection_records', 'series_id', existing_type=mysql.BIGINT(unsigned=True), nullable=False)
+    op.drop_column('collection_records', 'video_id')
+    op.drop_table('collection_sources')
diff --git a/server/app/api/v1/__pycache__/videos.cpython-311.pyc b/server/app/api/v1/__pycache__/videos.cpython-311.pyc
index ef714821f15e559c641efff8056a99686c485737..f74b24296712363d3d09744950b0c1fc2b8f7ada 100644
GIT binary patch
delta 80
zcmdm0e!QG_IWI340}#|3U(Wiyk@r2fifWujQEGC2Zf<H`N=;5;NosLPO-6o6O-^QZ
jYD!I6W@>qA%4T66aSg7-3-U=9<&&<+Cv7${X=4Wfv6&s@

delta 67
zcmX?JzN?&fIWI340}!0mzm)ZEBky}|afvvMqSWO4+}zZ>l$xBxlGNgonvDFC%?do?
W8eAb4<U=pYhhC8n-Rx-6#tr~Iu^49n

diff --git a/server/app/api/v1/admin.py b/server/app/api/v1/admin.py
index e443fa2..d016d8b 100644
--- a/server/app/api/v1/admin.py
+++ b/server/app/api/v1/admin.py
@@ -5,6 +5,8 @@
 - operator：套餐、活动、看板 → 仪表盘 / 套餐 CRUD / 赠送
 - 其余接口仅 super
 """
+import logging
+
 import redis.asyncio as aioredis
 from fastapi import APIRouter, Depends, Query, Request
 from pydantic import BaseModel, BaseModel as _BM, Field as _F, Field as _Field
@@ -19,6 +21,8 @@ from app.services import admin_service
 
 router = APIRouter(prefix="/admin", tags=["管理后台"])
 
+logger = logging.getLogger(__name__)
+
 # 角色依赖：super 自动放行
 require_reviewer = require_roles("reviewer")
 require_operator = require_roles("operator")
@@ -341,6 +345,15 @@ async def set_user_status(user_id: int, req: schema.UserStatusReq, request: Requ
     return ok(await admin_service.set_user_status(db, redis, admin, user_id, req, _ip(request)))
 
 
+@router.put("/users/{user_id}/password")
+async def reset_user_password(user_id: int, req: schema.UserPasswordResetReq, request: Request,
+                              db: AsyncSession = Depends(get_db),
+                              redis: aioredis.Redis = Depends(get_redis),
+                              admin: AdminIdentity = Depends(require_super)):
+    await admin_service.reset_user_password(db, redis, admin, user_id, req, _ip(request))
+    return ok()
+
+
 @router.post("/points/adjust")
 async def adjust_points(req: schema.PointsAdjustReq, request: Request,
                         db: AsyncSession = Depends(get_db),
@@ -558,6 +571,19 @@ async def list_series(keyword: str = "", page: int = 1, page_size: int = 20,
     rows = (await db.execute(
         stmt.order_by(Series.id.desc()).offset((page - 1) * page_size).limit(page_size)
     )).scalars().all()
+
+    # 关联采集记录（标记采集来源，供"同步更新"按钮使用）
+    from app.models.video import CollectionRecord
+    series_ids = [s.id for s in rows]
+    source_map: dict[int, int] = {}
+    if series_ids:
+        recs = (await db.execute(
+            select(CollectionRecord.series_id, CollectionRecord.source_id).where(
+                CollectionRecord.series_id.in_(series_ids)
+            )
+        )).all()
+        source_map = {r.series_id: r.source_id for r in recs}
+
     return ok({
         "total": total,
         "list": [{
@@ -565,6 +591,7 @@ async def list_series(keyword: str = "", page: int = 1, page_size: int = 20,
             "description": s.description or "",
             "category_id": s.category_id or 0,
             "total_episodes": s.total_episodes, "status": s.status,
+            "source_id": source_map.get(s.id),
             "created_at": s.created_at.strftime("%Y-%m-%d %H:%M:%S"),
         } for s in rows],
     })
@@ -664,6 +691,306 @@ async def bind_video_series(video_id: int, req: _VideoSeriesBind,
     return ok()
 
 
+# ---------- 短剧采集 ----------
+
+_collect_sync_running = False
+
+
+@router.post("/collection/sync/{series_id}")
+async def collect_sync_one(series_id: int, request: Request, db: AsyncSession = Depends(get_db),
+                           admin: AdminIdentity = Depends(require_operator)):
+    """手动同步单部采集短剧（补充源站新出的集数）"""
+    from app.models.admin import AdminLog
+    from app.models.video import CollectionRecord
+    from app.services import collection_service
+    from sqlalchemy import select
+
+    source_id = (await db.execute(
+        select(CollectionRecord.source_id).where(
+            CollectionRecord.source_key == collection_service.SOURCE_KEY,
+            CollectionRecord.series_id == series_id,
+        )
+    )).scalar_one_or_none()
+    if not source_id:
+        raise BizException(errors.NOT_FOUND, "该系列不是采集内容")
+
+    stat = await collection_service.sync_drama_by_id(db, source_id)
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_sync",
+                    target=f"series:{series_id}", detail=str(stat), ip=_ip(request)))
+    await db.commit()
+    return ok(stat)
+
+
+class _CollectSyncAllReq(BaseModel):
+    pages: int = _Field(2, ge=1, le=20)  # 增量同步的列表页数
+
+
+@router.post("/collection/sync-all")
+async def collect_sync_all(req: _CollectSyncAllReq, request: Request,
+                           db: AsyncSession = Depends(get_db),
+                           admin: AdminIdentity = Depends(require_operator)):
+    """触发增量同步（后台异步执行，立即返回）"""
+    import asyncio
+
+    from app.database import SessionFactory
+    from app.models.admin import AdminLog
+    from app.services import collection_service
+
+    global _collect_sync_running
+    if _collect_sync_running:
+        raise BizException(errors.RATE_LIMITED, "已有同步任务进行中")
+
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_sync_all",
+                    target="", detail=f"pages={req.pages}", ip=_ip(request)))
+    await db.commit()
+
+    async def _run() -> None:
+        global _collect_sync_running
+        _collect_sync_running = True
+        try:
+            async with SessionFactory() as s:
+                await collection_service.sync_short_dramas(s, max_pages=req.pages)
+        finally:
+            _collect_sync_running = False
+
+    asyncio.create_task(_run())
+    return ok({"started": True, "pages": req.pages})
+
+
+# ---------- 采集源管理（单视频类，自助添加）----------
+
+
+class _SourceCreate(BaseModel):
+    name: str = _Field(min_length=1, max_length=50)
+    list_url: str = _Field(min_length=10, max_length=500)
+
+
+class _SourceUpdate(BaseModel):
+    name: str | None = _Field(None, min_length=1, max_length=50)
+    list_url: str | None = _Field(None, min_length=10, max_length=500)
+    status: int | None = _Field(None, ge=0, le=1)
+
+
+def _source_dict(s) -> dict:
+    return {
+        "id": s.id, "name": s.name, "list_url": s.list_url,
+        "category_id": s.category_id, "status": s.status,
+        "last_sync_at": s.last_sync_at.strftime("%Y-%m-%d %H:%M:%S") if s.last_sync_at else "",
+        "created_at": s.created_at.strftime("%Y-%m-%d %H:%M:%S"),
+    }
+
+
+async def _resolve_category(db: AsyncSession, name: str) -> int:
+    """按名称找分类，不存在则创建"""
+    from app.models.video import Category
+    from sqlalchemy import func, select
+
+    cid = (await db.execute(select(Category.id).where(Category.name == name))).scalar_one_or_none()
+    if cid:
+        return cid
+    max_sort = (await db.execute(select(func.coalesce(func.max(Category.sort), 0)))).scalar_one()
+    c = Category(name=name, sort=max_sort + 1, status=1)
+    db.add(c)
+    await db.flush()
+    return c.id
+
+
+@router.get("/collection/sources")
+async def list_sources(db: AsyncSession = Depends(get_db),
+                       admin: AdminIdentity = Depends(require_operator)):
+    from app.models.video import CollectionSource
+    from sqlalchemy import select
+
+    rows = (await db.execute(select(CollectionSource).order_by(CollectionSource.id.desc()))).scalars().all()
+    return ok({"list": [_source_dict(s) for s in rows]})
+
+
+@router.post("/collection/sources")
+async def create_source(req: _SourceCreate, request: Request, db: AsyncSession = Depends(get_db),
+                        admin: AdminIdentity = Depends(require_operator)):
+    """添加采集源：自动按名称建/找分类"""
+    from app.models.admin import AdminLog
+    from app.models.video import CollectionSource
+
+    if "{{page}}" not in req.list_url:
+        raise BizException(errors.PARAM_ERROR, "URL 需包含 {{page}} 页码占位符")
+
+    cid = await _resolve_category(db, req.name.strip())
+    s = CollectionSource(name=req.name.strip(), list_url=req.list_url.strip(), category_id=cid)
+    db.add(s)
+    await db.flush()
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_source_create",
+                    target=f"source:{s.id}", detail=f"{s.name} {s.list_url}", ip=_ip(request)))
+    await db.commit()
+    await db.refresh(s)
+    return ok(_source_dict(s))
+
+
+@router.put("/collection/sources/{source_id}")
+async def update_source(source_id: int, req: _SourceUpdate, db: AsyncSession = Depends(get_db),
+                        admin: AdminIdentity = Depends(require_operator)):
+    from app.models.video import CollectionSource
+
+    s = await db.get(CollectionSource, source_id)
+    if not s:
+        raise BizException(errors.NOT_FOUND, "采集源不存在")
+    d = req.model_dump(exclude_unset=True)
+    if "list_url" in d and "{{page}}" not in d["list_url"]:
+        raise BizException(errors.PARAM_ERROR, "URL 需包含 {{page}} 页码占位符")
+    if "name" in d:
+        d["category_id"] = await _resolve_category(db, d["name"].strip())
+        d["name"] = d["name"].strip()
+    for k, v in d.items():
+        setattr(s, k, v)
+    await db.commit()
+    await db.refresh(s)
+    return ok(_source_dict(s))
+
+
+@router.delete("/collection/sources/{source_id}")
+async def delete_source(source_id: int, db: AsyncSession = Depends(get_db),
+                        admin: AdminIdentity = Depends(require_super)):
+    from app.models.video import CollectionSource
+
+    s = await db.get(CollectionSource, source_id)
+    if not s:
+        raise BizException(errors.NOT_FOUND, "采集源不存在")
+    await db.delete(s)
+    await db.commit()
+    return ok()
+
+
+class _SourceBatchReq(BaseModel):
+    text: str = _Field(min_length=1, max_length=20000)
+
+
+@router.post("/collection/sources/batch")
+async def batch_create_sources(req: _SourceBatchReq, request: Request, db: AsyncSession = Depends(get_db),
+                               admin: AdminIdentity = Depends(require_operator)):
+    """批量添加采集源：每行一条，格式 "分类名 URL"（URL 可带反引号），成功后自动触发采集"""
+    import re
+
+    from app.models.admin import AdminLog
+    from app.models.video import CollectionSource
+    from sqlalchemy import select
+
+    line_re = re.compile(r"^\s*(?P<name>.+?)[\s]+[`'\"]*(?P<url>https?://[^\s`'\"]+)[`'\"]*\s*$")
+    created, skipped, failed = [], [], []
+
+    for raw in req.text.splitlines():
+        line = raw.strip()
+        if not line:
+            continue
+        m = line_re.match(line)
+        if not m or "{{page}}" not in m.group("url"):
+            failed.append({"line": line[:80], "reason": "格式错误或缺少 {{page}} 占位"})
+            continue
+        name, url = m.group("name").strip().strip("`'\" "), m.group("url")
+        if not name or len(name) > 50:
+            failed.append({"line": line[:80], "reason": "分类名为空或过长"})
+            continue
+        exists = (await db.execute(
+            select(CollectionSource.id).where(CollectionSource.list_url == url)
+        )).scalar_one_or_none()
+        if exists:
+            skipped.append({"name": name, "reason": "URL 已存在"})
+            continue
+        cid = await _resolve_category(db, name)
+        s = CollectionSource(name=name, list_url=url, category_id=cid)
+        db.add(s)
+        await db.flush()
+        created.append({"id": s.id, "name": name})
+
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_source_batch",
+                    target="", detail=f"created={len(created)} skipped={len(skipped)} failed={len(failed)}",
+                    ip=_ip(request)))
+    await db.commit()
+
+    # 新建的源自动触发后台采集
+    if created:
+        import asyncio
+        for c in created:
+            if c["id"] not in _sync_running_sources:
+                _sync_running_sources.add(c["id"])
+                asyncio.create_task(_run_source_sync(c["id"], 0))
+
+    return ok({"created": created, "skipped": skipped, "failed": failed,
+               "sync_started": [c["id"] for c in created]})
+
+
+_sync_running_sources: set[int] = set()
+
+
+async def _run_source_sync(source_id: int, max_pages: int) -> None:
+    from app.database import SessionFactory
+    from app.models.video import CollectionSource
+    from app.services import collection_service
+
+    try:
+        async with SessionFactory() as s:
+            source = await s.get(CollectionSource, source_id)
+            if source:
+                stat = await collection_service.sync_source(s, source, max_pages=max_pages)
+                logger.info("采集源 %s 同步完成: %s", source_id, stat)
+    except Exception:
+        logger.exception("采集源 %s 同步失败", source_id)
+    finally:
+        _sync_running_sources.discard(source_id)
+
+
+class _SourceSyncReq(BaseModel):
+    max_pages: int = _Field(0, ge=0, le=200)  # 0=不限(增量会自动提前停止)
+
+
+@router.post("/collection/sources/{source_id}/sync")
+async def sync_one_source(source_id: int, req: _SourceSyncReq, request: Request,
+                          db: AsyncSession = Depends(get_db),
+                          admin: AdminIdentity = Depends(require_operator)):
+    """同步单个采集源（后台异步，立即返回）"""
+    import asyncio
+
+    from app.models.admin import AdminLog
+    from app.models.video import CollectionSource
+
+    s = await db.get(CollectionSource, source_id)
+    if not s:
+        raise BizException(errors.NOT_FOUND, "采集源不存在")
+    if source_id in _sync_running_sources:
+        raise BizException(errors.RATE_LIMITED, "该源正在同步中")
+
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_source_sync",
+                    target=f"source:{source_id}", detail=f"max_pages={req.max_pages}", ip=_ip(request)))
+    await db.commit()
+
+    _sync_running_sources.add(source_id)
+    asyncio.create_task(_run_source_sync(source_id, req.max_pages))
+    return ok({"started": True, "source_id": source_id})
+
+
+@router.post("/collection/sources/sync-all")
+async def sync_all_sources(request: Request, db: AsyncSession = Depends(get_db),
+                           admin: AdminIdentity = Depends(require_operator)):
+    """同步全部启用的采集源（后台异步）"""
+    import asyncio
+
+    from app.models.admin import AdminLog
+    from app.models.video import CollectionSource
+    from sqlalchemy import select
+
+    ids = (await db.execute(
+        select(CollectionSource.id).where(CollectionSource.status == 1)
+    )).scalars().all()
+    started = [i for i in ids if i not in _sync_running_sources]
+    for i in started:
+        _sync_running_sources.add(i)
+        asyncio.create_task(_run_source_sync(i, 0))
+
+    db.add(AdminLog(admin_id=admin.admin_id, action="collection_sources_sync_all",
+                    target="", detail=f"sources={started}", ip=_ip(request)))
+    await db.commit()
+    return ok({"started": started, "skipped_running": [i for i in ids if i not in started]})
+
+
 # ---------- 分类管理 ----------
 
 from pydantic import BaseModel as _BM
diff --git a/server/app/api/v1/media.py b/server/app/api/v1/media.py
new file mode 100644
index 0000000..f538ccd
--- /dev/null
+++ b/server/app/api/v1/media.py
@@ -0,0 +1,34 @@
+"""媒体代理：m3u8 播放列表转发（源站 playlist 内 TS 链接带时效签名，每次回源拉取新鲜版本）"""
+import re
+
+import httpx
+from fastapi import APIRouter, Query, Response
+
+from app.core.errors import NOT_FOUND, PARAM_ERROR
+from app.core.response import BizException
+from app.services.collection_service import HEADERS, UPSTREAM
+
+router = APIRouter(prefix="/m3u8", tags=["媒体"])
+
+# 只允许相对资源路径，防 SSRF
+_PATH_RE = re.compile(r"^[A-Za-z0-9][A-Za-z0-9/._-]*$")
+
+
+@router.get("/proxy")
+async def m3u8_proxy(path: str = Query(min_length=1, max_length=300)):
+    if ".." in path or not _PATH_RE.match(path):
+        raise BizException(PARAM_ERROR, "非法路径")
+
+    url = f"{UPSTREAM}/api/v1/m3u8/proxy"
+    async with httpx.AsyncClient(follow_redirects=True) as client:
+        resp = await client.get(url, params={"path": path}, headers=HEADERS, timeout=20)
+
+    text = resp.text
+    if resp.status_code != 200 or not text.lstrip().startswith("#EXTM3U"):
+        raise BizException(NOT_FOUND, "播放列表获取失败")
+
+    return Response(
+        content=text,
+        media_type="application/vnd.apple.mpegurl",
+        headers={"Cache-Control": "no-cache", "Access-Control-Allow-Origin": "*"},
+    )
diff --git a/server/app/api/v1/videos.py b/server/app/api/v1/videos.py
index 6bac7ba..1ca1349 100644
--- a/server/app/api/v1/videos.py
+++ b/server/app/api/v1/videos.py
@@ -25,7 +25,7 @@ UPLOAD_RATE_LIMIT = 5
 @router.get("/feed")
 async def get_feed(cursor: str | None = Query(None), limit: int = Query(10, ge=1, le=20),
                    category_id: int | None = Query(None),
-                   type: str = Query("recommend", pattern="^(recommend|latest|hot)$"),
+                   type: str = Query("recommend", pattern="^(recommend|latest|hot|liked|viewed)$"),
                    db: AsyncSession = Depends(get_db), redis: aioredis.Redis = Depends(get_redis),
                    identity: Identity = Depends(get_identity)):
     return ok(await video_service.get_feed(db, redis, identity, type, cursor, limit, category_id))
diff --git a/server/app/main.py b/server/app/main.py
index a7204d6..dbcf68a 100644
--- a/server/app/main.py
+++ b/server/app/main.py
@@ -69,8 +69,9 @@ from app.config import BASE_DIR
 app.mount("/static", StaticFiles(directory=BASE_DIR / "uploads"), name="static")
 
 # 业务路由（按模块逐步注册）
-from app.api.v1 import admin, auth, common, incentives, interactions, invite, membership, payments, users, videos
+from app.api.v1 import admin, auth, common, incentives, interactions, invite, media, membership, payments, users, videos
 
+app.include_router(media.router, prefix="/api/v1")
 app.include_router(auth.router, prefix="/api/v1")
 app.include_router(users.router, prefix="/api/v1")
 app.include_router(videos.router, prefix="/api/v1")
diff --git a/server/app/models/__pycache__/video.cpython-311.pyc b/server/app/models/__pycache__/video.cpython-311.pyc
index a21a135a1425632f428759fac4fc8a3effb217d2..151cb7fbcb07fe66409e298911567a1a840ba609 100644
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diff --git a/server/app/models/video.py b/server/app/models/video.py
index 1345ed6..ba5d9ff 100644
--- a/server/app/models/video.py
+++ b/server/app/models/video.py
@@ -114,3 +114,37 @@ class Series(Base):
         Index("idx_series_cat_status", "category_id", "status"),
         Index("idx_series_status_created", "status", "created_at"),
     )
+
+
+class CollectionRecord(Base):
+    """采集记录：外部内容源 → 本站系列的映射（幂等导入）"""
+
+    __tablename__ = "collection_records"
+
+    id: Mapped[int] = mapped_column(BIGINT(unsigned=True), primary_key=True, autoincrement=True)
+    source_key: Mapped[str] = mapped_column(String(50), comment="内容源标识")
+    source_id: Mapped[int] = mapped_column(BIGINT(unsigned=True), comment="源站内容 id")
+    series_id: Mapped[int | None] = mapped_column(BIGINT(unsigned=True), comment="本站系列 id")
+    video_id: Mapped[int | None] = mapped_column(BIGINT(unsigned=True), comment="本站视频 id(单视频类)")
+    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
+
+    __table_args__ = (
+        Index("uk_source", "source_key", "source_id", unique=True),
+        Index("idx_record_series", "series_id"),
+        Index("idx_record_video", "video_id"),
+    )
+
+
+class CollectionSource(Base):
+    """采集源配置：分类名 + 列表URL模板（后台自助添加）"""
+
+    __tablename__ = "collection_sources"
+
+    id: Mapped[int] = mapped_column(BIGINT(unsigned=True), primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(50), comment="分类名")
+    list_url: Mapped[str] = mapped_column(String(500), comment="列表URL模板，{{page}}为页码占位")
+    category_id: Mapped[int] = mapped_column(INTEGER(unsigned=True), comment="本站分类 id")
+    status: Mapped[int] = mapped_column(SmallInteger, default=1, comment="1启用 0停用")
+    last_sync_at: Mapped[datetime | None] = mapped_column(DateTime)
+    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
+    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now())
diff --git a/server/app/schemas/__pycache__/admin.cpython-311.pyc b/server/app/schemas/__pycache__/admin.cpython-311.pyc
index 54a3bfc3e8e58b2c592a1f41f84dc885d6903c03..4e3af2b8469a97e6c9fc7863cf2f06554c1a5e01 100644
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diff --git a/server/app/schemas/admin.py b/server/app/schemas/admin.py
index 1786e04..e0643fb 100644
--- a/server/app/schemas/admin.py
+++ b/server/app/schemas/admin.py
@@ -37,6 +37,13 @@ class PointsAdjustReq(BaseModel):
     reason: str = Field(min_length=1, max_length=200)
 
 
+class UserPasswordResetReq(BaseModel):
+    """后台重置用户密码"""
+
+    new_password: str = Field(min_length=6, max_length=100)
+    reason: str = Field(min_length=1, max_length=200)
+
+
 class ResettleReq(BaseModel):
     """人工补单（11.12）"""
 
diff --git a/server/app/services/__pycache__/admin_service.cpython-311.pyc b/server/app/services/__pycache__/admin_service.cpython-311.pyc
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diff --git a/server/app/services/__pycache__/video_service.cpython-311.pyc b/server/app/services/__pycache__/video_service.cpython-311.pyc
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diff --git a/server/app/services/admin_service.py b/server/app/services/admin_service.py
index 28414b8..47de06f 100644
--- a/server/app/services/admin_service.py
+++ b/server/app/services/admin_service.py
@@ -462,6 +462,26 @@ async def set_user_status(
     return {"user_id": user_id, "status": req.status, "status_text": USER_STATUS_TEXT[req.status]}
 
 
+async def reset_user_password(
+    db: AsyncSession, redis: aioredis.Redis, admin: AdminIdentity,
+    user_id: int, req, ip: str,
+) -> None:
+    """后台重置用户密码【敏感】：重置后全端 Token 立即失效"""
+    user = await db.get(User, user_id)
+    if user is None:
+        raise BizException(errors.NOT_FOUND, "用户不存在")
+    if user.status == 3:
+        raise BizException(errors.PARAM_ERROR, "账号已注销，不可操作")
+
+    user.password_hash = hash_password(req.new_password)
+    # 全端 Token 失效：递增令牌纪元 + 清 refresh 白名单
+    await redis.incr(f"auth:epoch:{user_id}")
+    await redis.delete(f"auth:refresh:{user_id}")
+    await _log(db, admin.admin_id, "user_password_reset", target=str(user_id),
+               detail=req.reason, ip=ip)
+    await db.commit()
+
+
 # ---------- 积分 ----------
 
 async def adjust_points(
diff --git a/server/app/services/collection_service.py b/server/app/services/collection_service.py
new file mode 100644
index 0000000..c68d629
--- /dev/null
+++ b/server/app/services/collection_service.py
@@ -0,0 +1,269 @@
+"""短剧采集服务：从内容源拉取短剧列表/详情，导入为 series + videos（幂等）"""
+import asyncio
+import logging
+from datetime import datetime
+from urllib.parse import quote
+
+import httpx
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.video import CollectionRecord, CollectionSource, Series, Video
+
+logger = logging.getLogger(__name__)
+
+# 内容源配置（域名轮换时只需改这里）
+SOURCE_KEY = "mdcmai4"
+UPSTREAM = "https://mdcmai4.xyz"
+PRODUCT_ID = 1
+CATEGORY_ID = 12          # 本站分类：AI短剧
+AUTHOR_USER_ID = 1        # 导入内容归属用户
+SELF_API_BASE = "https://vapi.256kb.top"  # 本站 API 对外地址
+
+HEADERS = {"User-Agent": "Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36"}
+
+
+async def _fetch_json(client: httpx.AsyncClient, url: str, params: dict | None = None) -> dict:
+    resp = await client.get(url, params=params, headers=HEADERS, timeout=20)
+    resp.raise_for_status()
+    body = resp.json()
+    if body.get("code") != 200 or not isinstance(body.get("data"), dict):
+        raise RuntimeError(f"上游响应异常: {url} -> {str(body)[:200]}")
+    return body["data"]
+
+
+def _proxy_url(path: str) -> str:
+    """把源站相对 m3u8 路径转为本站代理地址（域名轮换只改 SELF_API_BASE/上游常量）"""
+    return f"{SELF_API_BASE}/api/v1/m3u8/proxy?path={quote(path, safe='')}"
+
+
+async def _import_drama(client: httpx.AsyncClient, db: AsyncSession, drama_id: int) -> tuple[int, int]:
+    """导入单部短剧，返回 (新增集数, 跳过集数)"""
+    detail = await _fetch_json(client, f"{UPSTREAM}/api/v1/short-dramas/{drama_id}", {"productId": PRODUCT_ID})
+
+    record = (
+        await db.execute(
+            select(CollectionRecord).where(
+                CollectionRecord.source_key == SOURCE_KEY, CollectionRecord.source_id == drama_id
+            )
+        )
+    ).scalar_one_or_none()
+
+    published_at = None
+    try:
+        published_at = datetime.fromisoformat(detail.get("publishedAt", "")) or None
+    except ValueError:
+        pass
+
+    series = await db.get(Series, record.series_id) if record else None
+    if series is None:
+        series = Series(
+            title=(detail.get("title") or f"短剧{drama_id}")[:100],
+            cover_url=f"{UPSTREAM}{detail.get('coverUrl', '')}",
+            description=(detail.get("description") or "")[:500],
+            author_id=AUTHOR_USER_ID,
+            category_id=CATEGORY_ID,
+            total_episodes=0,
+            view_count=int(detail.get("heatCount") or 0),
+            status=1,
+        )
+        db.add(series)
+        await db.flush()
+        if record:  # 系列曾被删除：重挂映射
+            record.series_id = series.id
+        else:
+            db.add(CollectionRecord(source_key=SOURCE_KEY, source_id=drama_id, series_id=series.id))
+        await db.flush()
+
+    # 已有集数去重
+    existing = set(
+        (
+            await db.execute(
+                select(Video.episode_no).where(Video.series_id == series.id, Video.episode_no.is_not(None))
+            )
+        ).scalars().all()
+    )
+
+    created = skipped = 0
+    for ep in detail.get("episodes", []):
+        ep_no = int(ep.get("episodeNo") or 0)
+        if not ep_no or ep_no in existing:
+            skipped += 1
+            continue
+        db.add(
+            Video(
+                user_id=AUTHOR_USER_ID,
+                category_id=CATEGORY_ID,
+                series_id=series.id,
+                episode_no=ep_no,
+                title=(ep.get("titleOverride") or ep.get("title") or f"第{ep_no}集")[:100],
+                description=(detail.get("description") or "")[:500],
+                cover_url=f"{UPSTREAM}{detail.get('coverUrl', '')}",
+                video_url=_proxy_url(ep.get("videoUrl", "")),
+                duration=int(ep.get("durationSec") or 0),
+                status=2,
+                published_at=published_at,
+            )
+        )
+        existing.add(ep_no)
+        created += 1
+
+    series.total_episodes = len(existing)
+    return created, skipped
+
+
+async def sync_drama_by_id(db: AsyncSession, drama_id: int) -> dict:
+    """手动同步单部短剧（新增或补充缺失集数）；返回统计"""
+    async with httpx.AsyncClient(follow_redirects=True) as client:
+        created, skipped = await _import_drama(client, db, drama_id)
+        await db.commit()
+    return {"drama_id": drama_id, "episodes_created": created, "episodes_skipped": skipped}
+
+
+async def sync_short_dramas(
+    db: AsyncSession,
+    max_pages: int = 0,
+    page_size: int = 20,
+    sort_by: str = "heat",
+    delay: float = 0.25,
+) -> dict:
+    """按列表页增量同步短剧；返回统计"""
+    stat = {"dramas_new": 0, "dramas_exist": 0, "episodes_created": 0, "episodes_skipped": 0, "pages": 0}
+    async with httpx.AsyncClient(follow_redirects=True) as client:
+        page = 1
+        while True:
+            data = await _fetch_json(
+                client,
+                f"{UPSTREAM}/api/v1/short-dramas",
+                {"productId": PRODUCT_ID, "sortBy": sort_by, "page": page, "size": page_size},
+            )
+            items = data.get("items", [])
+            stat["pages"] = page
+            logger.info("列表第 %s/%s 页，%s 部", page, data.get("totalPages"), len(items))
+
+            for item in items:
+                drama_id = int(item.get("id") or 0)
+                if not drama_id:
+                    continue
+                exists = (
+                    await db.execute(
+                        select(CollectionRecord.id).where(
+                            CollectionRecord.source_key == SOURCE_KEY, CollectionRecord.source_id == drama_id
+                        )
+                    )
+                ).scalar_one_or_none()
+                if exists:
+                    stat["dramas_exist"] += 1
+                    continue
+                try:
+                    created, skipped = await _import_drama(client, db, drama_id)
+                    await db.commit()
+                    stat["dramas_new"] += 1
+                    stat["episodes_created"] += created
+                    stat["episodes_skipped"] += skipped
+                    logger.info("导入短剧 %s《%s》：新增 %s 集", drama_id, item.get("title"), created)
+                except Exception:
+                    await db.rollback()
+                    logger.exception("导入短剧 %s 失败，跳过", drama_id)
+                await asyncio.sleep(delay)
+
+            total_pages = int(data.get("totalPages") or 1)
+            if page >= total_pages or (max_pages and page >= max_pages):
+                break
+            page += 1
+            await asyncio.sleep(delay)
+    return stat
+
+
+# ---------- 单视频采集（通用 URL 模板，后台自助配置的采集源）----------
+
+def _abs_cover(item: dict) -> str:
+    """封面转绝对地址：源站 /api/... 代理路径或 /uploads/... 静态路径"""
+    u = item.get("coverUrl") or ""
+    if u.startswith("http"):
+        return u
+    return f"{UPSTREAM}{u}" if u else ""
+
+
+async def _import_video_item(db: AsyncSession, source: CollectionSource, item: dict) -> bool:
+    """导入单条视频，已存在返回 False"""
+    vid = int(item.get("id") or 0)
+    if not vid or not (item.get("videoUrl") or "").endswith(".m3u8"):
+        return False
+    exists = (
+        await db.execute(
+            select(CollectionRecord.id).where(
+                CollectionRecord.source_key == SOURCE_KEY, CollectionRecord.source_id == vid
+            )
+        )
+    ).scalar_one_or_none()
+    if exists:
+        return False
+
+    published_at = None
+    try:
+        published_at = datetime.fromisoformat(item.get("publishedAt", "")) or None
+    except ValueError:
+        pass
+
+    v = Video(
+        user_id=AUTHOR_USER_ID,
+        category_id=source.category_id,
+        title=(item.get("title") or f"视频{vid}")[:100],
+        description=(item.get("description") or "")[:500],
+        cover_url=_abs_cover(item)[:500],
+        video_url=_proxy_url(item["videoUrl"]),
+        duration=int(item.get("durationSec") or 0),
+        status=2,
+        view_count=int(item.get("viewCount") or 0),
+        like_count=int(item.get("likeCount") or 0),
+        favorite_count=int(item.get("favoriteCount") or 0),
+        published_at=published_at,
+    )
+    db.add(v)
+    await db.flush()
+    db.add(CollectionRecord(source_key=SOURCE_KEY, source_id=vid, video_id=v.id))
+    return True
+
+
+async def sync_source(
+    db: AsyncSession,
+    source: CollectionSource,
+    max_pages: int = 0,
+    stop_after_existing: int = 30,
+    delay: float = 0.25,
+) -> dict:
+    """按源的 URL 模板翻页采集；连续 stop_after_existing 条已存在则提前停止（增量）"""
+    stat = {"created": 0, "skipped": 0, "pages": 0, "stopped_early": False}
+    consecutive_existing = 0
+    async with httpx.AsyncClient(follow_redirects=True) as client:
+        page = 1
+        while True:
+            url = source.list_url.replace("{{page}}", str(page))
+            data = await _fetch_json(client, url)
+            items = data.get("items", [])
+            if not items:
+                break
+            stat["pages"] = page
+            for item in items:
+                if await _import_video_item(db, source, item):
+                    stat["created"] += 1
+                    consecutive_existing = 0
+                else:
+                    stat["skipped"] += 1
+                    consecutive_existing += 1
+                if consecutive_existing >= stop_after_existing:
+                    stat["stopped_early"] = True
+                    break
+            await db.commit()
+            if stat["stopped_early"]:
+                break
+            total_pages = int(data.get("totalPages") or page)
+            if page >= total_pages or (max_pages and page >= max_pages):
+                break
+            page += 1
+            await asyncio.sleep(delay)
+
+    source.last_sync_at = datetime.now()
+    await db.commit()
+    return stat
diff --git a/server/app/services/video_service.py b/server/app/services/video_service.py
index 0ce79b8..442a721 100644
--- a/server/app/services/video_service.py
+++ b/server/app/services/video_service.py
@@ -160,9 +160,37 @@ async def get_feed(
 ) -> dict:
     if feed_type == "latest":
         return await _feed_latest(db, identity, cursor, limit, category_id)
+    if feed_type in ("liked", "viewed"):
+        return await _feed_ranked(db, identity, feed_type, cursor, limit, category_id)
     return await _feed_scored(db, redis, identity, feed_type, cursor, limit, category_id)
 
 
+async def _feed_ranked(
+    db: AsyncSession, identity: Identity, feed_type: str, cursor: str | None,
+    limit: int, category_id: int | None,
+) -> dict:
+    """liked / viewed：按点赞量 / 播放量严格倒序（值 + id 打破并列游标）"""
+    col = Video.like_count if feed_type == "liked" else Video.view_count
+    stmt = await _base_pool_stmt(category_id)
+    c = _decode_cursor(cursor)
+    if c:
+        val, vid = int(c["n"]), int(c["i"])
+        stmt = stmt.where((col < val) | ((col == val) & (Video.id < vid)))
+    rows = list(
+        (await db.execute(stmt.order_by(col.desc(), Video.id.desc()).limit(limit + 1))).scalars()
+    )
+    page, rows = (len(rows) > limit), rows[:limit]
+    next_cursor = None
+    if page and rows:
+        last = rows[-1]
+        last_val = last.like_count if feed_type == "liked" else last.view_count
+        next_cursor = _encode_cursor({"n": last_val, "i": last.id})
+    return {
+        "next_cursor": next_cursor,
+        "list": await serialize_videos(db, rows, identity.user_id),
+    }
+
+
 async def _base_pool_stmt(category_id: int | None):
     stmt = select(Video).where(Video.status == STATUS_PUBLISHED, Video.published_at.isnot(None))
     if category_id:
diff --git a/server/scripts/build_tags_from_titles.py b/server/scripts/build_tags_from_titles.py
new file mode 100644
index 0000000..aa1b03d
--- /dev/null
+++ b/server/scripts/build_tags_from_titles.py
@@ -0,0 +1,157 @@
+"""一次性脚本：根据现有视频标题拆分关键词写入 tags / video_tags。
+
+用法：
+    cd /root/project/video/server
+    .venv/bin/python scripts/build_tags_from_titles.py [--dry-run]
+
+提取规则：
+    1. 番号（如 CAWD-601）及其系列前缀（CAWD）
+    2. 书名号/方括号内容（≤12 字，去掉「无码破解」「中文字幕」等标记词）
+    3. jieba TF-IDF 关键词 topK=6（过滤停用词、纯数字、单字）
+"""
+import argparse
+import asyncio
+import logging
+import re
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+
+import jieba.analyse  # noqa: E402
+from sqlalchemy import select  # noqa: E402
+
+from app.database import SessionFactory, engine  # noqa: E402
+from app.models.video import Tag, Video, VideoTag  # noqa: E402
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(message)s")
+log = logging.getLogger(__name__)
+
+STOP = set(
+    "第 集 部 篇 全集 完结 中文字幕 无码 破解 无码破解 字幕 高清 最新 精选 视频 在线 观看 "
+    "一个 一起 没有 为了 开始 结果 只能 直接 就是 没想到 真爽".split()
+)
+
+CODE_RE = re.compile(r"[A-Za-z]{2,6}-\d{2,4}")
+EPISODE_RE = re.compile(r"第[0-9一二三四五六七八九十百千零]+[集部期话卷章]")
+PUNCT_RE = re.compile(r"[《》「」『』\[\]【】()（）_\-:：,，.。!！?？…、/\\|~～\s]+")
+BRACKET_RE = re.compile(r"[《「『\[【(（]([^《》「」『』\[\]【】()（）]{2,30})[》」』\]】)）]")
+
+
+def extract_keywords(title: str) -> list[str]:
+    kws: list[str] = []
+
+    # 1. 番号 + 系列前缀
+    for code in CODE_RE.findall(title.upper()):
+        kws.append(code)
+        prefix = code.split("-")[0]
+        if len(prefix) >= 2:
+            kws.append(prefix)
+
+    # 2. 书名号/括号内容（剧名/主题）
+    for inner in BRACKET_RE.findall(title):
+        inner = inner.strip()
+        if 2 <= len(inner) <= 12 and inner not in STOP and not CODE_RE.search(inner):
+            kws.append(inner)
+
+    # 3. jieba TF-IDF
+    t = EPISODE_RE.sub(" ", title)
+    t = PUNCT_RE.sub(" ", t)
+    for w in jieba.analyse.extract_tags(t, topK=6):
+        w = w.strip()
+        if not (2 <= len(w) <= 12):
+            continue
+        if w in STOP or re.fullmatch(r"\d+", w):
+            continue
+        kws.append(w)
+
+    # 去重保序（按 casefold 键，避免 MySQL 不区分大小写的唯一键冲突）
+    seen: set[str] = set()
+    out: list[str] = []
+    for k in kws:
+        if k.isascii():
+            k = k.upper()
+        key = k.casefold()
+        if key not in seen:
+            seen.add(key)
+            out.append(k)
+    return out
+
+
+async def main(dry_run: bool) -> None:
+    async with SessionFactory() as db:
+        videos = (await db.execute(select(Video.id, Video.title))).all()
+        log.info("共 %d 个视频", len(videos))
+
+        tag_map: dict[str, int] = {}  # name -> tag_id（含新建暂存）
+        video_count: dict[str, int] = {}  # name -> 关联视频数
+        links: list[tuple[int, str]] = []  # (video_id, tag_name)
+
+        for vid, title in videos:
+            if not title:
+                continue
+            kws = extract_keywords(title)
+            for k in kws:
+                links.append((vid, k))
+                video_count[k] = video_count.get(k, 0) + 1
+
+        log.info("提取出 %d 个不同标签，%d 条视频-标签关联", len(video_count), len(links))
+        top = sorted(video_count.items(), key=lambda x: -x[1])[:15]
+        log.info("Top15 标签: %s", top)
+
+        if dry_run:
+            await engine.dispose()
+            return
+
+        # 预载已存在的 tags（运行中的后端也可能并发写 tags，全程幂等）
+        existing = (await db.execute(select(Tag.name, Tag.id))).all()
+        tag_map: dict[str, int] = {n.casefold(): i for n, i in existing}
+
+        # 写入 tags：INSERT IGNORE 防并发/重复，再取回 id
+        from sqlalchemy import text
+        new_names = [n[:20] for n in video_count if n[:20].casefold() not in tag_map]
+        for i in range(0, len(new_names), 500):
+            chunk = new_names[i:i + 500]
+            await db.execute(
+                text("INSERT IGNORE INTO tags (name, video_count) VALUES " +
+                     ",".join("(:n%d, 0)" % j for j in range(len(chunk)))),
+                {f"n{j}": v for j, v in enumerate(chunk)},
+            )
+        await db.flush()
+
+        existing = (await db.execute(select(Tag.name, Tag.id))).all()
+        tag_map = {n.casefold(): i for n, i in existing}
+
+        # 写入 video_tags：INSERT IGNORE（uk_video_tag 自动去重）
+        seen_link: set[tuple[int, int]] = set()
+        rows: list[dict] = []
+        for vid, name in links:
+            tid = tag_map.get(name[:20].casefold())
+            if tid is None or (vid, tid) in seen_link:
+                continue
+            seen_link.add((vid, tid))
+            rows.append({"v": vid, "t": tid})
+        for i in range(0, len(rows), 1000):
+            chunk = rows[i:i + 1000]
+            await db.execute(
+                text("INSERT IGNORE INTO video_tags (video_id, tag_id) VALUES " +
+                     ",".join("(:v%d, :t%d)" % (j, j) for j in range(len(chunk)))),
+                {**{f"v{j}": r["v"] for j, r in enumerate(chunk)},
+                 **{f"t{j}": r["t"] for j, r in enumerate(chunk)}},
+            )
+
+        # 统一回算冗余计数
+        await db.execute(text(
+            "UPDATE tags t SET t.video_count = "
+            "(SELECT COUNT(*) FROM video_tags vt WHERE vt.tag_id = t.id)"
+        ))
+        await db.commit()
+        log.info("写入完成：tags=%d（新增 %d），video_tags=%d", len(tag_map), len(new_names), len(rows))
+        await engine.dispose()
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--dry-run", action="store_true", help="只打印统计不写库")
+    args = parser.parse_args()
+    asyncio.run(main(args.dry_run))
diff --git a/server/scripts/collect_short_dramas.py b/server/scripts/collect_short_dramas.py
new file mode 100644
index 0000000..89d20de
--- /dev/null
+++ b/server/scripts/collect_short_dramas.py
@@ -0,0 +1,41 @@
+"""短剧采集 CLI
+用法:
+  .venv/bin/python scripts/collect_short_dramas.py                # 全量增量同步
+  .venv/bin/python scripts/collect_short_dramas.py --pages 1 --size 3   # 试跑
+  .venv/bin/python scripts/collect_short_dramas.py --drama-id 130       # 手动更新单部
+"""
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+
+from app.database import SessionFactory  # noqa: E402
+from app.services.collection_service import sync_drama_by_id, sync_short_dramas  # noqa: E402
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
+
+
+async def main() -> None:
+    parser = argparse.ArgumentParser(description="短剧采集")
+    parser.add_argument("--drama-id", type=int, default=0, help="只同步指定源站短剧 id")
+    parser.add_argument("--pages", type=int, default=0, help="最多同步的列表页数，0=全部")
+    parser.add_argument("--size", type=int, default=20, help="每页条数")
+    parser.add_argument("--sort", choices=["heat", "latest"], default="heat")
+    parser.add_argument("--delay", type=float, default=0.25, help="上游请求间隔秒")
+    args = parser.parse_args()
+
+    async with SessionFactory() as db:
+        if args.drama_id:
+            stat = await sync_drama_by_id(db, args.drama_id)
+        else:
+            stat = await sync_short_dramas(
+                db, max_pages=args.pages, page_size=args.size, sort_by=args.sort, delay=args.delay
+            )
+    print("同步完成:", stat)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())