diff --git a/frontend/components/GlobalExportDialog.vue b/frontend/components/GlobalExportDialog.vue
new file mode 100644
index 0000000..8791bf9
--- /dev/null
+++ b/frontend/components/GlobalExportDialog.vue
@@ -0,0 +1,1482 @@
+<template>
+  <div v-if="open" class="fixed inset-0 z-[135] flex items-center justify-center px-4 py-6">
+    <div class="absolute inset-0 bg-black/40 backdrop-blur-[2px]" @click="requestClose"></div>
+
+    <div class="relative flex max-h-[88vh] w-full max-w-[1180px] flex-col overflow-hidden rounded-[16px] border border-[#e6e6e6] bg-white shadow-2xl">
+      <div class="flex items-center gap-3 border-b border-[#efefef] px-5 py-4">
+        <div>
+          <div class="text-[16px] font-semibold text-[#222]">批量导出</div>
+          <div class="mt-1 text-[12px] text-[#7a7a7a]">
+            统一导出聊天记录、朋友圈和联系人，可按模块多选并分别设置导出粒度。
+          </div>
+        </div>
+        <button
+          type="button"
+          class="ml-auto flex h-8 w-8 items-center justify-center rounded-md text-[#888] transition hover:bg-[#f4f4f4] hover:text-[#222] disabled:cursor-not-allowed disabled:opacity-50"
+          :disabled="running"
+          title="关闭"
+          @click="requestClose"
+        >
+          <svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true">
+            <path d="M6 6l12 12M18 6L6 18" />
+          </svg>
+        </button>
+      </div>
+
+      <div class="flex-1 overflow-y-auto px-5 py-5">
+        <div class="space-y-5">
+          <div v-if="!selectedAccount" class="rounded-[12px] border border-amber-200 bg-amber-50 px-4 py-3 text-[13px] text-amber-900">
+            当前未选择账号，请先导入或切换到一个已解密账号后再导出。
+          </div>
+
+          <div v-if="globalError" class="rounded-[12px] border border-red-200 bg-red-50 px-4 py-3 text-[13px] text-red-700 whitespace-pre-wrap">
+            {{ globalError }}
+          </div>
+
+          <div v-if="globalMessage" class="rounded-[12px] border border-emerald-200 bg-emerald-50 px-4 py-3 text-[13px] text-emerald-700 whitespace-pre-wrap">
+            {{ globalMessage }}
+          </div>
+
+          <div v-if="privacyMode" class="rounded-[12px] border border-amber-200 bg-amber-50 px-4 py-3 text-[13px] text-amber-900">
+            已开启隐私模式：聊天记录导出会隐藏会话/用户名/内容，且不会打包头像与多媒体文件。
+          </div>
+
+          <div class="rounded-[14px] border border-[#ececec] bg-[#fafafa] p-4">
+            <div class="flex flex-wrap items-start gap-4">
+              <div class="min-w-[180px] flex-1">
+                <div class="text-[13px] font-medium text-[#222]">导出目录</div>
+                <div class="mt-1 text-[12px] text-[#7a7a7a]">
+                  桌面端会直接写入目标目录；浏览器端会在任务完成后自动保存到选中的浏览器目录。
+                </div>
+                <div class="mt-3 min-h-[44px] rounded-[10px] border border-[#e4e4e4] bg-white px-3 py-2 text-[12px] leading-5 text-[#555] break-all">
+                  {{ exportFolder || '未选择' }}
+                </div>
+              </div>
+
+              <div class="flex shrink-0 flex-wrap gap-2">
+                <button
+                  type="button"
+                  class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[13px] text-[#333] transition hover:bg-[#f4f4f4] disabled:cursor-not-allowed disabled:opacity-50"
+                  :disabled="running"
+                  @click="chooseExportFolder"
+                >
+                  选择文件夹
+                </button>
+                <button
+                  v-if="exportFolder"
+                  type="button"
+                  class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[13px] text-[#333] transition hover:bg-[#f4f4f4] disabled:cursor-not-allowed disabled:opacity-50"
+                  :disabled="running"
+                  @click="clearExportFolderSelection"
+                >
+                  清空
+                </button>
+              </div>
+            </div>
+          </div>
+
+          <div v-if="sourceError" class="rounded-[12px] border border-red-200 bg-red-50 px-4 py-3 text-[13px] text-red-700 whitespace-pre-wrap">
+            {{ sourceError }}
+          </div>
+
+          <div v-if="loadingSources" class="rounded-[12px] border border-[#ececec] bg-[#fafafa] px-4 py-3 text-[13px] text-[#666]">
+            正在加载导出数据源...
+          </div>
+
+          <section class="rounded-[14px] border border-[#ececec] bg-white p-4">
+            <div class="flex items-start gap-3">
+              <input v-model="moduleSelection.chat" type="checkbox" class="mt-1 h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+              <div class="min-w-0 flex-1">
+                <div class="flex flex-wrap items-center gap-2">
+                  <div class="text-[15px] font-semibold text-[#222]">聊天记录</div>
+                  <div class="rounded-full bg-[#07C160]/10 px-2 py-0.5 text-[11px] text-[#07C160]">
+                    支持 JSON / TXT / HTML
+                  </div>
+                </div>
+                <div class="mt-1 text-[12px] text-[#7a7a7a]">
+                  可按全部、群聊、单聊或自定义会话导出，并支持多选消息类型。
+                </div>
+
+                <div class="mt-4 space-y-4" :class="moduleSelection.chat ? '' : 'pointer-events-none select-none opacity-50'">
+                  <div class="flex flex-wrap gap-4">
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">导出范围</div>
+                      <div class="flex flex-wrap gap-2">
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="chatScope === 'all' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setChatScope('all')"
+                        >
+                          全部 {{ chatSessionCounts.total }}
+                        </button>
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="chatScope === 'groups' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setChatScope('groups')"
+                        >
+                          群聊 {{ chatSessionCounts.groups }}
+                        </button>
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="chatScope === 'singles' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setChatScope('singles')"
+                        >
+                          单聊 {{ chatSessionCounts.singles }}
+                        </button>
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="chatScope === 'custom' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setChatScope('custom')"
+                        >
+                          自定义多选
+                        </button>
+                      </div>
+                    </div>
+
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">导出格式</div>
+                      <div class="flex flex-wrap gap-2">
+                        <label
+                          v-for="format in chatFormats"
+                          :key="format.value"
+                          class="cursor-pointer rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="chatFormat === format.value ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                        >
+                          <input v-model="chatFormat" type="radio" class="hidden" :value="format.value" />
+                          <span>{{ format.label }}</span>
+                        </label>
+                      </div>
+                    </div>
+                  </div>
+
+                  <div class="grid gap-4 xl:grid-cols-[minmax(0,1fr)_320px]">
+                    <div class="space-y-3">
+                      <div class="text-[13px] font-medium text-[#333]">时间范围（可选）</div>
+                      <div class="flex flex-wrap items-center gap-2">
+                        <input
+                          v-model="chatStartLocal"
+                          type="datetime-local"
+                          class="min-w-[220px] rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                        />
+                        <span class="text-[#999]">至</span>
+                        <input
+                          v-model="chatEndLocal"
+                          type="datetime-local"
+                          class="min-w-[220px] rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                        />
+                      </div>
+                    </div>
+
+                    <div class="space-y-2 rounded-[12px] border border-[#ededed] bg-[#fafafa] p-3">
+                      <label class="flex items-center gap-2 text-[13px] text-[#333]">
+                        <input v-model="chatIncludeOfficial" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                        <span>包含公众号/官方账号会话</span>
+                      </label>
+                      <label class="flex items-center gap-2 text-[13px] text-[#333]">
+                        <input v-model="chatIncludeHidden" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                        <span>包含隐藏会话</span>
+                      </label>
+                    </div>
+                  </div>
+
+                  <div v-if="chatScope === 'custom'" class="rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3">
+                    <div class="flex flex-wrap items-center gap-2">
+                      <input
+                        v-model="chatSearchQuery"
+                        type="text"
+                        placeholder="搜索会话（名称 / username）"
+                        class="min-w-[220px] flex-1 rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                      />
+                      <button
+                        type="button"
+                        class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[12px] text-[#333] transition hover:bg-[#f4f4f4]"
+                        @click="selectAllChatFiltered"
+                      >
+                        全选筛选结果
+                      </button>
+                      <button
+                        type="button"
+                        class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[12px] text-[#333] transition hover:bg-[#f4f4f4]"
+                        @click="clearChatSelection"
+                      >
+                        清空
+                      </button>
+                    </div>
+
+                    <div class="mt-3 max-h-[240px] overflow-y-auto rounded-[10px] border border-[#e7e7e7] bg-white">
+                      <label
+                        v-for="item in chatFilteredSessions"
+                        :key="item.username"
+                        class="flex cursor-pointer items-center gap-3 border-b border-[#f1f1f1] px-3 py-2 transition hover:bg-[#f8f8f8]"
+                        :class="isChatSelected(item.username) ? 'bg-[#07C160]/5' : ''"
+                      >
+                        <input v-model="chatSelectedUsernames" type="checkbox" :value="item.username" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                        <div class="h-9 w-9 overflow-hidden rounded-[10px] bg-[#e9e9e9]">
+                          <img v-if="item.avatar" :src="item.avatar" :alt="item.name" class="h-full w-full object-cover" referrerpolicy="no-referrer" />
+                          <div v-else class="flex h-full w-full items-center justify-center text-[12px] font-semibold text-[#666]">
+                            {{ (item.name || item.username || '?').charAt(0) }}
+                          </div>
+                        </div>
+                        <div class="min-w-0 flex-1">
+                          <div class="truncate text-[13px] text-[#222]">
+                            {{ item.name }}
+                            <span v-if="item.isGroup" class="text-[11px] text-[#999]">（群）</span>
+                          </div>
+                          <div class="truncate text-[12px] text-[#8a8a8a]">{{ item.username }}</div>
+                        </div>
+                      </label>
+                      <div v-if="chatFilteredSessions.length === 0" class="px-3 py-4 text-[12px] text-[#888]">没有匹配的会话</div>
+                    </div>
+
+                    <div class="mt-2 text-[12px] text-[#7a7a7a]">已选 {{ chatSelectedUsernames.length }} 个会话</div>
+                  </div>
+
+                  <div>
+                    <div class="mb-2 text-[13px] font-medium text-[#333]">消息类型（可多选）</div>
+                    <div class="grid gap-2 rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3 sm:grid-cols-2 xl:grid-cols-4">
+                      <label
+                        v-for="item in chatMessageTypeOptions"
+                        :key="item.value"
+                        class="flex items-center gap-2 text-[13px] text-[#444]"
+                      >
+                        <input v-model="chatMessageTypes" type="checkbox" :value="item.value" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                        <span>{{ item.label }}</span>
+                      </label>
+                    </div>
+                  </div>
+
+                  <div v-if="chatFormat === 'html'" class="rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3">
+                    <div class="text-[13px] font-medium text-[#333]">HTML 选项</div>
+                    <div class="mt-3 space-y-3">
+                      <label class="flex items-start gap-2 text-[13px] text-[#444]">
+                        <input
+                          v-model="chatDownloadRemoteMedia"
+                          type="checkbox"
+                          class="mt-0.5 h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]"
+                          :disabled="privacyMode"
+                        />
+                        <span>允许联网下载链接 / 引用缩略图（隐私模式下自动忽略）</span>
+                      </label>
+
+                      <div class="flex flex-wrap items-center gap-2">
+                        <span class="text-[13px] text-[#444]">每页消息数</span>
+                        <input
+                          v-model.number="chatHtmlPageSize"
+                          type="number"
+                          min="0"
+                          step="100"
+                          class="w-[140px] rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                        />
+                        <span class="text-[12px] text-[#888]">推荐 1000，0 表示单文件</span>
+                      </div>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </section>
+
+          <section class="rounded-[14px] border border-[#ececec] bg-white p-4">
+            <div class="flex items-start gap-3">
+              <input v-model="moduleSelection.sns" type="checkbox" class="mt-1 h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+              <div class="min-w-0 flex-1">
+                <div class="flex flex-wrap items-center gap-2">
+                  <div class="text-[15px] font-semibold text-[#222]">朋友圈</div>
+                  <div class="rounded-full bg-[#576b95]/10 px-2 py-0.5 text-[11px] text-[#576b95]">
+                    支持 HTML / JSON / TXT
+                  </div>
+                </div>
+                <div class="mt-1 text-[12px] text-[#7a7a7a]">
+                  可导出全部联系人朋友圈，或按联系人自定义多选。
+                </div>
+
+                <div class="mt-4 space-y-4" :class="moduleSelection.sns ? '' : 'pointer-events-none select-none opacity-50'">
+                  <div class="flex flex-wrap gap-4">
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">导出范围</div>
+                      <div class="flex flex-wrap gap-2">
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="snsScope === 'all' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setSnsScope('all')"
+                        >
+                          全部 {{ snsUsers.length }}
+                        </button>
+                        <button
+                          type="button"
+                          class="rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="snsScope === 'custom' ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                          @click="setSnsScope('custom')"
+                        >
+                          自定义多选
+                        </button>
+                      </div>
+                    </div>
+
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">导出格式</div>
+                      <div class="flex flex-wrap gap-2">
+                        <label
+                          v-for="format in snsFormats"
+                          :key="format.value"
+                          class="cursor-pointer rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="snsFormat === format.value ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                        >
+                          <input v-model="snsFormat" type="radio" class="hidden" :value="format.value" />
+                          <span>{{ format.label }}</span>
+                        </label>
+                      </div>
+                    </div>
+
+                    <label class="flex items-center gap-2 rounded-[12px] border border-[#ececec] bg-[#fafafa] px-3 py-2 text-[13px] text-[#444]">
+                      <input v-model="snsUseCache" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                      <span>复用缓存</span>
+                    </label>
+                  </div>
+
+                  <div v-if="snsScope === 'custom'" class="rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3">
+                    <div class="flex flex-wrap items-center gap-2">
+                      <input
+                        v-model="snsSearchQuery"
+                        type="text"
+                        placeholder="搜索朋友圈联系人"
+                        class="min-w-[220px] flex-1 rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                      />
+                      <button
+                        type="button"
+                        class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[12px] text-[#333] transition hover:bg-[#f4f4f4]"
+                        @click="selectAllSnsFiltered"
+                      >
+                        全选筛选结果
+                      </button>
+                      <button
+                        type="button"
+                        class="rounded-[10px] border border-[#dcdcdc] bg-white px-3 py-2 text-[12px] text-[#333] transition hover:bg-[#f4f4f4]"
+                        @click="clearSnsSelection"
+                      >
+                        清空
+                      </button>
+                    </div>
+
+                    <div class="mt-3 max-h-[240px] overflow-y-auto rounded-[10px] border border-[#e7e7e7] bg-white">
+                      <label
+                        v-for="item in snsFilteredUsers"
+                        :key="item.username"
+                        class="flex cursor-pointer items-center gap-3 border-b border-[#f1f1f1] px-3 py-2 transition hover:bg-[#f8f8f8]"
+                        :class="isSnsSelected(item.username) ? 'bg-[#07C160]/5' : ''"
+                      >
+                        <input v-model="snsSelectedUsernames" type="checkbox" :value="item.username" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                        <div class="h-9 w-9 overflow-hidden rounded-[10px] bg-[#e9e9e9]">
+                          <img v-if="item.avatar" :src="item.avatar" :alt="item.displayName" class="h-full w-full object-cover" referrerpolicy="no-referrer" />
+                          <div v-else class="flex h-full w-full items-center justify-center text-[12px] font-semibold text-[#666]">
+                            {{ (item.displayName || item.username || '?').charAt(0) }}
+                          </div>
+                        </div>
+                        <div class="min-w-0 flex-1">
+                          <div class="truncate text-[13px] text-[#222]">{{ item.displayName || item.username }}</div>
+                          <div class="truncate text-[12px] text-[#8a8a8a]">{{ item.username }} · {{ item.postCount || 0 }} 条</div>
+                        </div>
+                      </label>
+                      <div v-if="snsFilteredUsers.length === 0" class="px-3 py-4 text-[12px] text-[#888]">没有匹配的联系人</div>
+                    </div>
+
+                    <div class="mt-2 text-[12px] text-[#7a7a7a]">已选 {{ snsSelectedUsernames.length }} 个联系人</div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </section>
+
+          <section class="rounded-[14px] border border-[#ececec] bg-white p-4">
+            <div class="flex items-start gap-3">
+              <input v-model="moduleSelection.contacts" type="checkbox" class="mt-1 h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+              <div class="min-w-0 flex-1">
+                <div class="flex flex-wrap items-center gap-2">
+                  <div class="text-[15px] font-semibold text-[#222]">联系人</div>
+                  <div class="rounded-full bg-[#0ea5e9]/10 px-2 py-0.5 text-[11px] text-[#0ea5e9]">
+                    支持 JSON / CSV
+                  </div>
+                </div>
+                <div class="mt-1 text-[12px] text-[#7a7a7a]">
+                  可按联系人类型多选导出，也支持关键词过滤。
+                </div>
+
+                <div class="mt-4 space-y-4" :class="moduleSelection.contacts ? '' : 'pointer-events-none select-none opacity-50'">
+                  <div class="flex flex-wrap gap-4">
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">导出格式</div>
+                      <div class="flex flex-wrap gap-2">
+                        <label
+                          v-for="format in contactFormats"
+                          :key="format.value"
+                          class="cursor-pointer rounded-[999px] border px-3 py-1.5 text-[12px] transition"
+                          :class="contactsFormat === format.value ? 'border-[#07C160] bg-[#07C160] text-white' : 'border-[#e1e1e1] bg-white text-[#444] hover:bg-[#f7f7f7]'"
+                        >
+                          <input v-model="contactsFormat" type="radio" class="hidden" :value="format.value" />
+                          <span>{{ format.label }}</span>
+                        </label>
+                      </div>
+                    </div>
+
+                    <label class="flex items-center gap-2 rounded-[12px] border border-[#ececec] bg-[#fafafa] px-3 py-2 text-[13px] text-[#444]">
+                      <input v-model="contactsIncludeAvatarLink" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                      <span>包含头像链接</span>
+                    </label>
+                  </div>
+
+                  <div class="grid gap-4 md:grid-cols-[minmax(0,1fr)_320px]">
+                    <div>
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">关键词过滤（可选）</div>
+                      <input
+                        v-model="contactsKeyword"
+                        type="text"
+                        placeholder="例如：备注名、昵称、username"
+                        class="w-full rounded-[10px] border border-[#e1e1e1] px-3 py-2 text-[13px] text-[#333] outline-none focus:border-[#07C160] focus:ring-2 focus:ring-[#07C160]/15"
+                      />
+                    </div>
+
+                    <div class="rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3">
+                      <div class="mb-2 text-[13px] font-medium text-[#333]">联系人类型（可多选）</div>
+                      <div class="space-y-2">
+                        <label class="flex items-center gap-2 text-[13px] text-[#444]">
+                          <input v-model="contactTypes.friends" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                          <span>好友</span>
+                        </label>
+                        <label class="flex items-center gap-2 text-[13px] text-[#444]">
+                          <input v-model="contactTypes.groups" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                          <span>群聊</span>
+                        </label>
+                        <label class="flex items-center gap-2 text-[13px] text-[#444]">
+                          <input v-model="contactTypes.officials" type="checkbox" class="h-4 w-4 rounded border-[#d0d0d0] text-[#07C160] focus:ring-[#07C160]" />
+                          <span>公众号</span>
+                        </label>
+                      </div>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </section>
+
+          <section v-if="taskRuns.length > 0" class="rounded-[14px] border border-[#ececec] bg-white p-4">
+            <div class="text-[15px] font-semibold text-[#222]">导出进度</div>
+            <div class="mt-3 space-y-3">
+              <div v-for="task in taskRuns" :key="task.key" class="rounded-[12px] border border-[#ececec] bg-[#fafafa] p-3">
+                <div class="flex flex-wrap items-center gap-2">
+                  <div class="text-[14px] font-medium text-[#222]">{{ task.label }}</div>
+                  <span class="rounded-full px-2 py-0.5 text-[11px]" :class="taskStatusClass(task.status)">
+                    {{ taskStatusLabel(task.status) }}
+                  </span>
+                </div>
+
+                <div v-if="task.percent != null" class="mt-3">
+                  <div class="flex items-center justify-between text-[12px] text-[#666]">
+                    <span>{{ task.detail || task.message || '处理中...' }}</span>
+                    <span>{{ task.percent }}%</span>
+                  </div>
+                  <div class="mt-1 h-2 overflow-hidden rounded-full bg-white">
+                    <div class="h-full rounded-full bg-[#07C160] transition-all duration-300" :style="{ width: `${task.percent}%` }"></div>
+                  </div>
+                </div>
+
+                <div v-else-if="task.detail || task.message" class="mt-2 text-[12px] text-[#666] whitespace-pre-wrap">
+                  {{ task.detail || task.message }}
+                </div>
+
+                <div v-if="task.backendPath" class="mt-2 text-[12px] text-[#666] break-all">
+                  <span class="font-medium text-[#333]">后端产物：</span>{{ task.backendPath }}
+                </div>
+                <div v-if="task.outputPath" class="mt-1 text-[12px] text-[#666] break-all">
+                  <span class="font-medium text-[#333]">最终位置：</span>{{ task.outputPath }}
+                </div>
+                <div v-if="task.error" class="mt-2 text-[12px] text-red-600 whitespace-pre-wrap">
+                  {{ task.error }}
+                </div>
+              </div>
+            </div>
+          </section>
+        </div>
+      </div>
+
+      <div class="flex items-center justify-end gap-2 border-t border-[#efefef] px-5 py-4">
+        <button
+          type="button"
+          class="rounded-[10px] border border-[#dcdcdc] bg-white px-4 py-2 text-[13px] text-[#333] transition hover:bg-[#f4f4f4] disabled:cursor-not-allowed disabled:opacity-50"
+          :disabled="running"
+          @click="requestClose"
+        >
+          关闭
+        </button>
+        <button
+          type="button"
+          class="rounded-[10px] bg-[#07C160] px-4 py-2 text-[13px] font-medium text-white transition hover:bg-[#06ad56] disabled:cursor-not-allowed disabled:opacity-60"
+          :disabled="!canStartExport"
+          @click="startBatchExport"
+        >
+          {{ running ? '导出中...' : '开始批量导出' }}
+        </button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue'
+import { storeToRefs } from 'pinia'
+import { useChatAccountsStore } from '~/stores/chatAccounts'
+import { usePrivacyStore } from '~/stores/privacy'
+import { toUnixSeconds } from '~/lib/chat/formatters'
+
+const props = defineProps({
+  open: {
+    type: Boolean,
+    default: false
+  }
+})
+
+const emit = defineEmits(['close'])
+
+const api = useApi()
+const apiBase = useApiBase()
+
+const chatAccounts = useChatAccountsStore()
+const { selectedAccount } = storeToRefs(chatAccounts)
+
+const privacyStore = usePrivacyStore()
+const { privacyMode } = storeToRefs(privacyStore)
+
+const loadingSources = ref(false)
+const sourceError = ref('')
+const globalError = ref('')
+const globalMessage = ref('')
+const running = ref(false)
+
+const exportFolder = ref('')
+const exportFolderHandle = ref(null)
+
+const moduleSelection = reactive({
+  chat: true,
+  sns: true,
+  contacts: true
+})
+
+const chatFormats = [
+  { value: 'json', label: 'JSON' },
+  { value: 'txt', label: 'TXT' },
+  { value: 'html', label: 'HTML' }
+]
+
+const snsFormats = [
+  { value: 'html', label: 'HTML' },
+  { value: 'json', label: 'JSON' },
+  { value: 'txt', label: 'TXT' }
+]
+
+const contactFormats = [
+  { value: 'json', label: 'JSON' },
+  { value: 'csv', label: 'CSV' }
+]
+
+const chatMessageTypeOptions = [
+  { value: 'text', label: '文本' },
+  { value: 'image', label: '图片' },
+  { value: 'emoji', label: '表情' },
+  { value: 'video', label: '视频' },
+  { value: 'voice', label: '语音' },
+  { value: 'chatHistory', label: '聊天记录' },
+  { value: 'transfer', label: '转账' },
+  { value: 'redPacket', label: '红包' },
+  { value: 'file', label: '文件' },
+  { value: 'link', label: '链接' },
+  { value: 'quote', label: '引用' },
+  { value: 'system', label: '系统' },
+  { value: 'voip', label: '通话' }
+]
+
+const chatScope = ref('all')
+const chatFormat = ref('json')
+const chatIncludeOfficial = ref(true)
+const chatIncludeHidden = ref(false)
+const chatDownloadRemoteMedia = ref(true)
+const chatHtmlPageSize = ref(1000)
+const chatStartLocal = ref('')
+const chatEndLocal = ref('')
+const chatSearchQuery = ref('')
+const chatSelectedUsernames = ref([])
+const chatMessageTypes = ref(chatMessageTypeOptions.map((item) => item.value))
+const chatSessions = ref([])
+
+const snsFormat = ref('html')
+const snsScope = ref('all')
+const snsUseCache = ref(true)
+const snsSearchQuery = ref('')
+const snsSelectedUsernames = ref([])
+const snsUsers = ref([])
+
+const contactsFormat = ref('json')
+const contactsIncludeAvatarLink = ref(true)
+const contactsKeyword = ref('')
+const contactTypes = reactive({
+  friends: true,
+  groups: true,
+  officials: true
+})
+
+const taskRuns = ref([])
+
+const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms))
+
+const asNumber = (value) => {
+  const next = Number(value)
+  return Number.isFinite(next) ? next : 0
+}
+
+const clamp01 = (value) => Math.min(1, Math.max(0, value))
+
+const formatBytes = (value) => {
+  const bytes = Number(value)
+  if (!Number.isFinite(bytes) || bytes <= 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB', 'TB']
+  let size = bytes
+  let index = 0
+  while (size >= 1024 && index < units.length - 1) {
+    size /= 1024
+    index += 1
+  }
+  const digits = size >= 100 || index === 0 ? 0 : size >= 10 ? 1 : 2
+  return `${size.toFixed(digits)} ${units[index]}`
+}
+
+const buildExportTimestamp = () => {
+  const now = new Date()
+  const pad = (n) => String(n).padStart(2, '0')
+  return `${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}_${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}`
+}
+
+const sanitizeFileNamePart = (value, fallback = 'export') => {
+  const cleaned = String(value || '')
+    .trim()
+    .replace(/[^0-9A-Za-z._-]+/g, '_')
+    .replace(/^[._-]+|[._-]+$/g, '')
+  return cleaned || fallback
+}
+
+const normalizeUniqueUsernames = (list) => {
+  const seen = new Set()
+  return (Array.isArray(list) ? list : []).reduce((acc, item) => {
+    const username = String(item || '').trim()
+    if (!username || seen.has(username)) return acc
+    seen.add(username)
+    acc.push(username)
+    return acc
+  }, [])
+}
+
+const isDesktopExportRuntime = () => {
+  return !!(process.client && typeof window !== 'undefined' && window?.wechatDesktop?.chooseDirectory)
+}
+
+const isWebDirectoryPickerSupported = () => {
+  return !!(process.client && typeof window !== 'undefined' && typeof window.showDirectoryPicker === 'function')
+}
+
+const hasExportTarget = computed(() => {
+  return isDesktopExportRuntime()
+    ? !!String(exportFolder.value || '').trim()
+    : !!exportFolderHandle.value
+})
+
+const activeModuleCount = computed(() => {
+  return ['chat', 'sns', 'contacts'].filter((key) => !!moduleSelection[key]).length
+})
+
+const canStartExport = computed(() => {
+  if (running.value) return false
+  if (!selectedAccount.value) return false
+  if (!hasExportTarget.value) return false
+  return activeModuleCount.value > 0
+})
+
+const normalizeChatSession = (session) => {
+  return {
+    id: session?.id || session?.username || '',
+    username: String(session?.username || '').trim(),
+    name: String(session?.name || session?.username || '').trim(),
+    avatar: String(session?.avatar || '').trim(),
+    isGroup: !!session?.isGroup
+  }
+}
+
+const chatFilteredSessions = computed(() => {
+  const query = String(chatSearchQuery.value || '').trim().toLowerCase()
+  if (!query) return chatSessions.value
+  return chatSessions.value.filter((item) => {
+    const name = String(item?.name || '').toLowerCase()
+    const username = String(item?.username || '').toLowerCase()
+    return name.includes(query) || username.includes(query)
+  })
+})
+
+const chatSessionCounts = computed(() => {
+  const total = chatSessions.value.length
+  const groups = chatSessions.value.filter((item) => !!item?.isGroup).length
+  return {
+    total,
+    groups,
+    singles: total - groups
+  }
+})
+
+const snsFilteredUsers = computed(() => {
+  const query = String(snsSearchQuery.value || '').trim().toLowerCase()
+  if (!query) return snsUsers.value
+  return snsUsers.value.filter((item) => {
+    const name = String(item?.displayName || '').toLowerCase()
+    const username = String(item?.username || '').toLowerCase()
+    return name.includes(query) || username.includes(query)
+  })
+})
+
+const ensureAccountReady = async () => {
+  privacyStore.init()
+  await chatAccounts.ensureLoaded()
+}
+
+const loadChatSessions = async () => {
+  const account = String(selectedAccount.value || '').trim()
+  if (!account) {
+    chatSessions.value = []
+    return
+  }
+  const response = await api.listChatSessions({
+    account,
+    limit: 5000,
+    include_hidden: true,
+    include_official: true
+  })
+  const sessions = Array.isArray(response?.sessions) ? response.sessions : []
+  chatSessions.value = sessions
+    .map(normalizeChatSession)
+    .filter((item) => !!item.username)
+}
+
+const loadSnsUsers = async () => {
+  const account = String(selectedAccount.value || '').trim()
+  if (!account) {
+    snsUsers.value = []
+    return
+  }
+  const response = await api.listSnsUsers({ account, limit: 5000 })
+  const items = Array.isArray(response?.items) ? response.items : []
+  snsUsers.value = items
+    .map((item) => ({
+      username: String(item?.username || '').trim(),
+      displayName: String(item?.displayName || item?.username || '').trim(),
+      avatar: String(item?.avatar || '').trim(),
+      postCount: asNumber(item?.postCount)
+    }))
+    .filter((item) => !!item.username)
+}
+
+const ensureSourcesLoaded = async () => {
+  if (!selectedAccount.value) {
+    chatSessions.value = []
+    snsUsers.value = []
+    return
+  }
+  loadingSources.value = true
+  sourceError.value = ''
+  try {
+    await Promise.all([loadChatSessions(), loadSnsUsers()])
+  } catch (error) {
+    sourceError.value = error?.message || '加载导出数据源失败'
+  } finally {
+    loadingSources.value = false
+  }
+}
+
+const setChatScope = (scope) => {
+  chatScope.value = String(scope || 'all')
+  if (chatScope.value === 'custom' && chatSelectedUsernames.value.length === 0) {
+    chatSelectedUsernames.value = chatFilteredSessions.value.map((item) => item.username)
+  }
+}
+
+const setSnsScope = (scope) => {
+  snsScope.value = String(scope || 'all')
+  if (snsScope.value === 'custom' && snsSelectedUsernames.value.length === 0) {
+    snsSelectedUsernames.value = snsFilteredUsers.value.map((item) => item.username)
+  }
+}
+
+const isChatSelected = (username) => {
+  return normalizeUniqueUsernames(chatSelectedUsernames.value).includes(String(username || '').trim())
+}
+
+const isSnsSelected = (username) => {
+  return normalizeUniqueUsernames(snsSelectedUsernames.value).includes(String(username || '').trim())
+}
+
+const selectAllChatFiltered = () => {
+  const merged = [
+    ...normalizeUniqueUsernames(chatSelectedUsernames.value),
+    ...chatFilteredSessions.value.map((item) => item.username)
+  ]
+  chatSelectedUsernames.value = normalizeUniqueUsernames(merged)
+}
+
+const clearChatSelection = () => {
+  chatSelectedUsernames.value = []
+}
+
+const selectAllSnsFiltered = () => {
+  const merged = [
+    ...normalizeUniqueUsernames(snsSelectedUsernames.value),
+    ...snsFilteredUsers.value.map((item) => item.username)
+  ]
+  snsSelectedUsernames.value = normalizeUniqueUsernames(merged)
+}
+
+const clearSnsSelection = () => {
+  snsSelectedUsernames.value = []
+}
+
+const chooseExportFolder = async () => {
+  globalError.value = ''
+  globalMessage.value = ''
+  try {
+    if (!process.client) {
+      globalError.value = '当前环境不支持选择导出目录'
+      return
+    }
+
+    if (isDesktopExportRuntime()) {
+      const result = await window.wechatDesktop.chooseDirectory({ title: '选择导出目录' })
+      if (result && !result.canceled && Array.isArray(result.filePaths) && result.filePaths.length > 0) {
+        exportFolder.value = String(result.filePaths[0] || '').trim()
+        exportFolderHandle.value = null
+      }
+      return
+    }
+
+    if (isWebDirectoryPickerSupported()) {
+      const handle = await window.showDirectoryPicker()
+      if (handle) {
+        exportFolderHandle.value = handle
+        exportFolder.value = `浏览器目录：${String(handle.name || '已选择')}`
+      }
+      return
+    }
+
+    globalError.value = '当前浏览器不支持目录选择，请使用桌面端或 Chromium 新版浏览器'
+  } catch (error) {
+    const message = String(error?.message || '').trim()
+    if (error?.name === 'AbortError' || message.includes('The user aborted a request')) {
+      return
+    }
+    globalError.value = error?.message || '选择导出目录失败'
+  }
+}
+
+const clearExportFolderSelection = () => {
+  exportFolder.value = ''
+  exportFolderHandle.value = null
+}
+
+const taskStatusLabel = (status) => {
+  if (status === 'running') return '进行中'
+  if (status === 'done') return '已完成'
+  if (status === 'error') return '失败'
+  return '等待中'
+}
+
+const taskStatusClass = (status) => {
+  if (status === 'running') return 'bg-sky-100 text-sky-700'
+  if (status === 'done') return 'bg-emerald-100 text-emerald-700'
+  if (status === 'error') return 'bg-red-100 text-red-700'
+  return 'bg-gray-100 text-gray-600'
+}
+
+const createTask = (key, label) => ({
+  key,
+  label,
+  status: 'pending',
+  message: '',
+  detail: '',
+  percent: null,
+  error: '',
+  backendPath: '',
+  outputPath: ''
+})
+
+const guessZipFileName = (job, fallback) => {
+  const raw = String(job?.zipPath || '').trim()
+  if (raw) {
+    const name = raw.replace(/\\/g, '/').split('/').pop()
+    if (name) return name
+  }
+  return fallback
+}
+
+const buildBrowserOutputLabel = (fileName) => {
+  const folderLabel = String(exportFolder.value || '浏览器目录').trim()
+  return `${folderLabel}/${fileName}`
+}
+
+const saveResponseToBrowserFolder = async ({ response, fileName, task }) => {
+  if (!exportFolderHandle.value || typeof exportFolderHandle.value.getFileHandle !== 'function') {
+    throw new Error('请先选择浏览器导出目录')
+  }
+
+  const safeName = sanitizeFileNamePart(fileName, 'export')
+  const fileHandle = await exportFolderHandle.value.getFileHandle(safeName, { create: true })
+  const writable = await fileHandle.createWritable()
+
+  const totalBytes = asNumber(response.headers.get('Content-Length'))
+  let writtenBytes = 0
+
+  if (response.body && typeof response.body.getReader === 'function') {
+    const reader = response.body.getReader()
+    try {
+      while (true) {
+        const { done, value } = await reader.read()
+        if (done) break
+        if (!value || !value.byteLength) continue
+        await writable.write(value)
+        writtenBytes += value.byteLength
+        task.detail = totalBytes > 0
+          ? `正在保存到浏览器目录：${formatBytes(writtenBytes)} / ${formatBytes(totalBytes)}`
+          : `正在保存到浏览器目录：${formatBytes(writtenBytes)}`
+      }
+      await writable.close()
+    } catch (error) {
+      try {
+        await reader.cancel()
+      } catch {}
+      try {
+        await writable.abort()
+      } catch {}
+      throw error
+    }
+  } else {
+    const blob = await response.blob()
+    writtenBytes = asNumber(blob.size)
+    task.detail = `正在保存到浏览器目录：${formatBytes(writtenBytes)}`
+    await writable.write(blob)
+    await writable.close()
+  }
+
+  return buildBrowserOutputLabel(safeName)
+}
+
+const downloadJobToBrowserFolder = async ({ url, fileName, task }) => {
+  const response = await fetch(url)
+  if (!response.ok) {
+    throw new Error(`下载导出文件失败（${response.status}）`)
+  }
+  return await saveResponseToBrowserFolder({ response, fileName, task })
+}
+
+const computeChatPercent = (job) => {
+  const progress = job?.progress || {}
+  const total = asNumber(progress.conversationsTotal)
+  const done = asNumber(progress.conversationsDone)
+  if (total <= 0) return null
+  const currentTotal = asNumber(progress.currentConversationMessagesTotal)
+  const currentDone = asNumber(progress.currentConversationMessagesExported)
+  const currentFraction = currentTotal > 0 ? clamp01(currentDone / currentTotal) : 0
+  const percent = clamp01((done + (String(job?.status || '') === 'running' ? currentFraction : 0)) / total)
+  return Math.round(percent * 100)
+}
+
+const updateChatTaskFromJob = (task, job) => {
+  const progress = job?.progress || {}
+  task.percent = computeChatPercent(job)
+  const convDone = asNumber(progress.conversationsDone)
+  const convTotal = asNumber(progress.conversationsTotal)
+  const msgDone = asNumber(progress.messagesExported)
+  const mediaCopied = asNumber(progress.mediaCopied)
+  const mediaMissing = asNumber(progress.mediaMissing)
+  const currentName = String(progress.currentConversationName || progress.currentConversationUsername || '').trim()
+  const currentDone = asNumber(progress.currentConversationMessagesExported)
+  const currentTotal = asNumber(progress.currentConversationMessagesTotal)
+  task.detail = `会话 ${convDone}/${convTotal} · 消息 ${msgDone} · 媒体 ${mediaCopied} · 缺失 ${mediaMissing}`
+  if (currentName && String(job?.status || '') === 'running') {
+    task.message = `当前：${currentName}（${currentDone}/${currentTotal}）`
+  }
+  task.backendPath = String(job?.zipPath || '').trim()
+}
+
+const computeSnsPercent = (job) => {
+  const progress = job?.progress || {}
+  const totalUsers = asNumber(progress.usersTotal)
+  const doneUsers = asNumber(progress.usersDone)
+  if (totalUsers <= 0) return null
+  const currentTotal = asNumber(progress.currentUserPostsTotal)
+  const currentDone = asNumber(progress.currentUserPostsDone)
+  const currentFraction = currentTotal > 0 ? clamp01(currentDone / currentTotal) : 0
+  const percent = clamp01((doneUsers + (String(job?.status || '') === 'running' ? currentFraction : 0)) / totalUsers)
+  return Math.round(percent * 100)
+}
+
+const updateSnsTaskFromJob = (task, job) => {
+  const progress = job?.progress || {}
+  task.percent = computeSnsPercent(job)
+  const usersDone = asNumber(progress.usersDone)
+  const usersTotal = asNumber(progress.usersTotal)
+  const postsDone = asNumber(progress.postsExported)
+  const postsTotal = asNumber(progress.postsTotal)
+  const mediaCopied = asNumber(progress.mediaCopied)
+  const mediaMissing = asNumber(progress.mediaMissing)
+  const currentName = String(progress.currentUserDisplayName || progress.currentUserUsername || '').trim()
+  const currentDone = asNumber(progress.currentUserPostsDone)
+  const currentTotal = asNumber(progress.currentUserPostsTotal)
+  task.detail = `联系人 ${usersDone}/${usersTotal} · 朋友圈 ${postsDone}/${postsTotal} · 媒体 ${mediaCopied} · 缺失 ${mediaMissing}`
+  if (currentName && String(job?.status || '') === 'running') {
+    task.message = `当前：${currentName}（${currentDone}/${currentTotal}）`
+  }
+  task.backendPath = String(job?.zipPath || '').trim()
+}
+
+const waitForJobDone = async ({ exportId, task, getter, updater, kind }) => {
+  let continuousFailures = 0
+  while (true) {
+    try {
+      const response = await getter(exportId)
+      const job = response?.job || null
+      if (!job) throw new Error('导出任务不存在')
+      continuousFailures = 0
+      updater(task, job)
+      const status = String(job?.status || '').trim()
+      if (status === 'done') return job
+      if (status === 'cancelled') throw new Error('导出任务已取消')
+      if (status === 'error') throw new Error(job?.error || `${kind}导出失败`)
+    } catch (error) {
+      continuousFailures += 1
+      if (continuousFailures >= 5) {
+        throw error
+      }
+      task.detail = `轮询状态失败，正在重试（${continuousFailures}/5）`
+    }
+    await sleep(1200)
+  }
+}
+
+const buildChatMediaKinds = (messageTypes) => {
+  const selectedTypeSet = new Set(messageTypes.map((item) => String(item || '').trim()))
+  const mediaKindSet = new Set()
+  if (selectedTypeSet.has('chatHistory')) {
+    mediaKindSet.add('image')
+    mediaKindSet.add('emoji')
+    mediaKindSet.add('video')
+    mediaKindSet.add('video_thumb')
+    mediaKindSet.add('voice')
+    mediaKindSet.add('file')
+  }
+  if (selectedTypeSet.has('image')) mediaKindSet.add('image')
+  if (selectedTypeSet.has('emoji')) mediaKindSet.add('emoji')
+  if (selectedTypeSet.has('video')) {
+    mediaKindSet.add('video')
+    mediaKindSet.add('video_thumb')
+  }
+  if (selectedTypeSet.has('voice')) mediaKindSet.add('voice')
+  if (selectedTypeSet.has('file')) mediaKindSet.add('file')
+  return Array.from(mediaKindSet)
+}
+
+const runChatExport = async (task, stamp) => {
+  task.status = 'running'
+  task.message = '正在创建聊天导出任务...'
+  task.detail = ''
+  task.error = ''
+
+  const messageTypes = normalizeUniqueUsernames(chatMessageTypes.value)
+  const mediaKinds = buildChatMediaKinds(messageTypes)
+  const includeMedia = !privacyMode.value && mediaKinds.length > 0
+  const startTime = toUnixSeconds(chatStartLocal.value)
+  const endTime = toUnixSeconds(chatEndLocal.value)
+
+  let scope = String(chatScope.value || 'all')
+  let usernames = []
+  if (scope === 'custom') {
+    scope = 'selected'
+    usernames = normalizeUniqueUsernames(chatSelectedUsernames.value)
+  }
+
+  const response = await api.createChatExport({
+    account: selectedAccount.value,
+    scope,
+    usernames,
+    format: chatFormat.value,
+    start_time: startTime,
+    end_time: endTime,
+    include_hidden: !!chatIncludeHidden.value,
+    include_official: !!chatIncludeOfficial.value,
+    message_types: messageTypes,
+    include_media: includeMedia,
+    media_kinds: mediaKinds,
+    download_remote_media: chatFormat.value === 'html' && !privacyMode.value && !!chatDownloadRemoteMedia.value,
+    html_page_size: Math.max(0, Math.floor(Number(chatHtmlPageSize.value || 1000))),
+    output_dir: isDesktopExportRuntime() ? String(exportFolder.value || '').trim() : null,
+    privacy_mode: !!privacyMode.value,
+    file_name: isDesktopExportRuntime() ? null : `wechat_chat_export_${stamp}.zip`
+  })
+
+  const exportId = String(response?.job?.exportId || '').trim()
+  if (!exportId) throw new Error('聊天导出任务创建失败')
+
+  const job = await waitForJobDone({
+    exportId,
+    task,
+    getter: api.getChatExport,
+    updater: updateChatTaskFromJob,
+    kind: '聊天记录'
+  })
+
+  task.percent = 100
+  task.backendPath = String(job?.zipPath || '').trim()
+
+  if (isDesktopExportRuntime()) {
+    task.outputPath = task.backendPath
+    task.detail = `导出完成，共 ${asNumber(job?.progress?.messagesExported)} 条消息`
+    return
+  }
+
+  const fileName = guessZipFileName(job, `wechat_chat_export_${stamp}.zip`)
+  task.message = '正在保存到浏览器目录...'
+  task.outputPath = await downloadJobToBrowserFolder({
+    url: `${apiBase}/chat/exports/${encodeURIComponent(exportId)}/download`,
+    fileName,
+    task
+  })
+  task.detail = `浏览器目录保存完成，共 ${asNumber(job?.progress?.messagesExported)} 条消息`
+}
+
+const runSnsExport = async (task, stamp) => {
+  task.status = 'running'
+  task.message = '正在创建朋友圈导出任务...'
+  task.detail = ''
+  task.error = ''
+
+  let scope = String(snsScope.value || 'all')
+  let usernames = []
+  if (scope === 'custom') {
+    scope = 'selected'
+    usernames = normalizeUniqueUsernames(snsSelectedUsernames.value)
+  }
+
+  const response = await api.createSnsExport({
+    account: selectedAccount.value,
+    scope,
+    usernames,
+    format: snsFormat.value,
+    use_cache: !!snsUseCache.value,
+    output_dir: isDesktopExportRuntime() ? String(exportFolder.value || '').trim() : null,
+    file_name: isDesktopExportRuntime() ? null : `wechat_sns_export_${stamp}.zip`
+  })
+
+  const exportId = String(response?.job?.exportId || '').trim()
+  if (!exportId) throw new Error('朋友圈导出任务创建失败')
+
+  const job = await waitForJobDone({
+    exportId,
+    task,
+    getter: api.getSnsExport,
+    updater: updateSnsTaskFromJob,
+    kind: '朋友圈'
+  })
+
+  task.percent = 100
+  task.backendPath = String(job?.zipPath || '').trim()
+
+  if (isDesktopExportRuntime()) {
+    task.outputPath = task.backendPath
+    task.detail = `导出完成，共 ${asNumber(job?.progress?.postsExported)} 条朋友圈`
+    return
+  }
+
+  const fileName = guessZipFileName(job, `wechat_sns_export_${stamp}.zip`)
+  task.message = '正在保存到浏览器目录...'
+  task.outputPath = await downloadJobToBrowserFolder({
+    url: `${apiBase}/sns/exports/${encodeURIComponent(exportId)}/download`,
+    fileName,
+    task
+  })
+  task.detail = `浏览器目录保存完成，共 ${asNumber(job?.progress?.postsExported)} 条朋友圈`
+}
+
+const escapeCsvCell = (value) => {
+  const text = String(value == null ? '' : value)
+  if (/[",\n\r]/.test(text)) return `"${text.replace(/"/g, '""')}"`
+  return text
+}
+
+const buildContactsWebPayload = async () => {
+  const response = await api.listChatContacts({
+    account: selectedAccount.value,
+    keyword: contactsKeyword.value || '',
+    include_friends: contactTypes.friends,
+    include_groups: contactTypes.groups,
+    include_officials: contactTypes.officials
+  })
+
+  const contacts = Array.isArray(response?.contacts) ? response.contacts : []
+  const rows = contacts.map((item) => {
+    const row = {
+      username: String(item?.username || ''),
+      displayName: String(item?.displayName || ''),
+      remark: String(item?.remark || ''),
+      nickname: String(item?.nickname || ''),
+      alias: String(item?.alias || ''),
+      type: String(item?.type || ''),
+      region: String(item?.region || ''),
+      country: String(item?.country || ''),
+      province: String(item?.province || ''),
+      city: String(item?.city || ''),
+      source: String(item?.source || ''),
+      sourceScene: item?.sourceScene == null ? '' : String(item?.sourceScene)
+    }
+    if (contactsIncludeAvatarLink.value) {
+      row.avatarLink = String(item?.avatarLink || '')
+    }
+    return row
+  })
+
+  return {
+    account: String(selectedAccount.value || '').trim(),
+    count: rows.length,
+    contacts: rows
+  }
+}
+
+const writeTextFileToBrowserFolder = async ({ fileName, content, task }) => {
+  if (!exportFolderHandle.value || typeof exportFolderHandle.value.getFileHandle !== 'function') {
+    throw new Error('请先选择浏览器导出目录')
+  }
+  const safeName = sanitizeFileNamePart(fileName, 'contacts')
+  task.detail = '正在保存到浏览器目录...'
+  const fileHandle = await exportFolderHandle.value.getFileHandle(safeName, { create: true })
+  const writable = await fileHandle.createWritable()
+  await writable.write(content)
+  await writable.close()
+  return buildBrowserOutputLabel(safeName)
+}
+
+const runContactsExport = async (task, stamp) => {
+  task.status = 'running'
+  task.message = '正在导出联系人...'
+  task.detail = ''
+  task.error = ''
+  task.percent = null
+
+  if (isDesktopExportRuntime()) {
+    const response = await api.exportChatContacts({
+      account: selectedAccount.value,
+      output_dir: String(exportFolder.value || '').trim(),
+      format: contactsFormat.value,
+      include_avatar_link: contactsIncludeAvatarLink.value,
+      keyword: contactsKeyword.value || '',
+      contact_types: {
+        friends: contactTypes.friends,
+        groups: contactTypes.groups,
+        officials: contactTypes.officials
+      }
+    })
+    task.outputPath = String(response?.outputPath || '').trim()
+    task.detail = `导出完成，共 ${asNumber(response?.count)} 个联系人`
+    return
+  }
+
+  const payload = await buildContactsWebPayload()
+  const extension = contactsFormat.value === 'csv' ? 'csv' : 'json'
+  const fileName = `contacts_${sanitizeFileNamePart(payload.account, 'account')}_${stamp}.${extension}`
+
+  if (contactsFormat.value === 'csv') {
+    const columns = [
+      ['username', '用户名'],
+      ['displayName', '显示名称'],
+      ['remark', '备注'],
+      ['nickname', '昵称'],
+      ['alias', '微信号'],
+      ['type', '类型'],
+      ['region', '地区'],
+      ['country', '国家/地区码'],
+      ['province', '省份'],
+      ['city', '城市'],
+      ['source', '来源'],
+      ['sourceScene', '来源场景码']
+    ]
+    if (contactsIncludeAvatarLink.value) {
+      columns.push(['avatarLink', '头像链接'])
+    }
+    const lines = [columns.map(([, label]) => escapeCsvCell(label)).join(',')]
+    for (const row of payload.contacts) {
+      lines.push(columns.map(([key]) => escapeCsvCell(row[key])).join(','))
+    }
+    task.outputPath = await writeTextFileToBrowserFolder({
+      fileName,
+      content: `\uFEFF${lines.join('\n')}`,
+      task
+    })
+  } else {
+    const jsonPayload = {
+      exportedAt: new Date().toISOString().replace(/\.\d{3}Z$/, 'Z'),
+      account: payload.account,
+      count: payload.count,
+      filters: {
+        keyword: String(contactsKeyword.value || ''),
+        contactTypes: {
+          friends: !!contactTypes.friends,
+          groups: !!contactTypes.groups,
+          officials: !!contactTypes.officials
+        },
+        includeAvatarLink: !!contactsIncludeAvatarLink.value
+      },
+      contacts: payload.contacts
+    }
+    task.outputPath = await writeTextFileToBrowserFolder({
+      fileName,
+      content: JSON.stringify(jsonPayload, null, 2),
+      task
+    })
+  }
+
+  task.detail = `浏览器目录保存完成，共 ${payload.count} 个联系人`
+}
+
+const validateSelections = () => {
+  const errors = []
+
+  if (!selectedAccount.value) {
+    errors.push('未选择账号')
+  }
+  if (!hasExportTarget.value) {
+    errors.push('请先选择导出目录')
+  }
+  if (activeModuleCount.value <= 0) {
+    errors.push('请至少勾选一个导出模块')
+  }
+
+  const startTime = toUnixSeconds(chatStartLocal.value)
+  const endTime = toUnixSeconds(chatEndLocal.value)
+  if (moduleSelection.chat && startTime && endTime && startTime > endTime) {
+    errors.push('聊天记录时间范围不合法：开始时间不能晚于结束时间')
+  }
+
+  if (moduleSelection.chat && normalizeUniqueUsernames(chatMessageTypes.value).length <= 0) {
+    errors.push('聊天记录至少勾选一个消息类型')
+  }
+
+  if (moduleSelection.chat && chatScope.value === 'custom' && normalizeUniqueUsernames(chatSelectedUsernames.value).length <= 0) {
+    errors.push('聊天记录已选择自定义会话，请至少勾选一个会话')
+  }
+
+  if (moduleSelection.sns && snsScope.value === 'custom' && normalizeUniqueUsernames(snsSelectedUsernames.value).length <= 0) {
+    errors.push('朋友圈已选择自定义联系人，请至少勾选一个联系人')
+  }
+
+  if (moduleSelection.contacts && !contactTypes.friends && !contactTypes.groups && !contactTypes.officials) {
+    errors.push('联系人导出至少勾选一种联系人类型')
+  }
+
+  return errors
+}
+
+const startBatchExport = async () => {
+  globalError.value = ''
+  globalMessage.value = ''
+
+  const errors = validateSelections()
+  if (errors.length > 0) {
+    globalError.value = errors.join('\n')
+    return
+  }
+
+  const queue = []
+  if (moduleSelection.chat) queue.push(createTask('chat', '聊天记录'))
+  if (moduleSelection.sns) queue.push(createTask('sns', '朋友圈'))
+  if (moduleSelection.contacts) queue.push(createTask('contacts', '联系人'))
+
+  taskRuns.value = queue
+  running.value = true
+
+  const stamp = buildExportTimestamp()
+
+  try {
+    for (const task of taskRuns.value) {
+      try {
+        if (task.key === 'chat') {
+          await runChatExport(task, stamp)
+        } else if (task.key === 'sns') {
+          await runSnsExport(task, stamp)
+        } else if (task.key === 'contacts') {
+          await runContactsExport(task, stamp)
+        }
+        task.status = 'done'
+        task.error = ''
+      } catch (error) {
+        task.status = 'error'
+        task.percent = null
+        task.error = error?.message || '导出失败'
+      }
+    }
+
+    const successCount = taskRuns.value.filter((item) => item.status === 'done').length
+    const failedCount = taskRuns.value.filter((item) => item.status === 'error').length
+    globalMessage.value = `批量导出已结束：成功 ${successCount} 项，失败 ${failedCount} 项。`
+    if (failedCount > 0) {
+      globalError.value = '部分导出任务失败，请查看下方任务详情。'
+    }
+  } finally {
+    running.value = false
+  }
+}
+
+const requestClose = () => {
+  if (running.value) return
+  emit('close')
+}
+
+const onWindowKeydown = (event) => {
+  if (event?.key !== 'Escape') return
+  if (!props.open || running.value) return
+  event.preventDefault()
+  requestClose()
+}
+
+watch(
+  () => props.open,
+  async (open) => {
+    if (!open) return
+    globalError.value = ''
+    globalMessage.value = ''
+    await ensureAccountReady()
+    await ensureSourcesLoaded()
+  }
+)
+
+watch(selectedAccount, async () => {
+  chatSelectedUsernames.value = []
+  snsSelectedUsernames.value = []
+  if (props.open) {
+    await ensureSourcesLoaded()
+  }
+})
+
+onMounted(async () => {
+  await ensureAccountReady()
+  if (process.client && typeof window !== 'undefined') {
+    window.addEventListener('keydown', onWindowKeydown)
+  }
+})
+
+onBeforeUnmount(() => {
+  if (!process.client || typeof window === 'undefined') return
+  window.removeEventListener('keydown', onWindowKeydown)
+})
+</script>
diff --git a/frontend/components/SidebarRail.vue b/frontend/components/SidebarRail.vue
index c83b4d4..02ad116 100644
--- a/frontend/components/SidebarRail.vue
+++ b/frontend/components/SidebarRail.vue
@@ -144,6 +144,33 @@
         </div>
       </div>
 
+      <!-- Export -->
+      <div
+        v-if="showGlobalExportEntry"
+        class="sidebar-rail-action w-full h-[var(--sidebar-rail-step)] flex items-center justify-center cursor-pointer group"
+        title="批量导出"
+        @click="openExportDialog"
+      >
+        <div class="sidebar-rail-plate w-[var(--sidebar-rail-btn)] h-[var(--sidebar-rail-btn)] rounded-md flex items-center justify-center transition-colors bg-transparent">
+          <div class="sidebar-rail-icon w-[var(--sidebar-rail-icon)] h-[var(--sidebar-rail-icon)]" :class="{ 'sidebar-rail-icon-active': exportDialogOpen }">
+            <svg
+              class="w-full h-full"
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              stroke-width="1.8"
+              stroke-linecap="round"
+              stroke-linejoin="round"
+              aria-hidden="true"
+            >
+              <path d="M12 3v11" />
+              <path d="M7.5 10.5L12 15l4.5-4.5" />
+              <path d="M4 19h16" />
+            </svg>
+          </div>
+        </div>
+      </div>
+
       <!-- Realtime -->
       <div
         class="sidebar-rail-action w-full h-[var(--sidebar-rail-step)] flex items-center justify-center group"
@@ -333,6 +360,8 @@
       </div>
     </div>
   </div>
+
+  <GlobalExportDialog v-if="showGlobalExportEntry" :open="exportDialogOpen" @close="closeExportDialog" />
 </template>
 
 <script setup>
@@ -358,7 +387,9 @@ const { enabled: realtimeEnabled, available: realtimeAvailable, checking: realti
 const { open: settingsDialogOpen, openDialog: openSettingsDialog } = useSettingsDialog()
 const { getChatAccountInfo, deleteChatAccount } = useApi()
 
+const showGlobalExportEntry = false
 const accountDialogOpen = ref(false)
+const exportDialogOpen = ref(false)
 const accountInfoLoading = ref(false)
 const accountInfoError = ref('')
 const accountInfo = ref(null)
@@ -460,11 +491,19 @@ const openAccountDialog = async () => {
   await loadAccountInfo()
 }
 
+const openExportDialog = () => {
+  exportDialogOpen.value = true
+}
+
 const closeAccountDialog = () => {
   if (accountDeleteLoading.value) return
   accountDialogOpen.value = false
 }
 
+const closeExportDialog = () => {
+  exportDialogOpen.value = false
+}
+
 watch(selectedAccount, () => {
   if (!accountDialogOpen.value) return
   void loadAccountInfo()
@@ -508,9 +547,13 @@ const goSettings = () => { openSettingsDialog() }
 
 const onWindowKeydown = (event) => {
   if (event?.key !== 'Escape') return
-  if (!accountDialogOpen.value) return
+  if (exportDialogOpen.value) {
+    return
+  }
   event.preventDefault()
-  closeAccountDialog()
+  if (accountDialogOpen.value) {
+    closeAccountDialog()
+  }
 }
 
 const deleteCurrentAccountData = async () => {