chore(release): v1.3.0

Update wcdb_api.dll for SNS image decrypt
feat(sns): 朋友圈页支持联系人侧栏、导出与 Live Photo
2026-06-18 15:54:08 +08:00 · 2026-02-18 01:18:16 +08:00 · 2026-02-18 00:59:49 +08:00 · 2026-02-17 23:41:34 +08:00 · 2026-02-17 23:40:58 +08:00 · 2026-02-17 23:40:36 +08:00
56 changed files with 20948 additions and 930 deletions
@@ -5,14 +5,13 @@
 <div align="center">
    <h1>WeChatDataAnalysis - 微信数据库解密与分析工具</h1>
    <p>一个专门用于微信4.x版本数据库解密的工具（支持聊天记录实时更新）</p>
-    <p><b>特别致谢</b>：<a href="https://github.com/ycccccccy/echotrace">echotrace</a>、<a href="https://github.com/hicccc77/WeFlow">WeFlow</a>（本项目大量功能参考其实现，提供了重要技术支持）</p>
+    <p><b>特别致谢</b>：<a href="https://github.com/H3CoF6">H3CoF6</a>（密钥与朋友圈等核心内容的技术支持）、<a href="https://github.com/ycccccccy/echotrace">echotrace</a>、<a href="https://github.com/hicccc77/WeFlow">WeFlow</a>（本项目大量功能参考其实现）</p>
    <img src="https://img.shields.io/github/v/tag/LifeArchiveProject/WeChatDataAnalysis" alt="Version" />
    <img src="https://img.shields.io/github/stars/LifeArchiveProject/WeChatDataAnalysis" alt="Stars" />
    <img src="https://gh-down-badges.linkof.link/LifeArchiveProject/WeChatDataAnalysis" alt="Downloads" />
    <img src="https://img.shields.io/github/forks/LifeArchiveProject/WeChatDataAnalysis" alt="Forks" />
    <a href="https://qm.qq.com/q/VQEQ7PcGkk"><img src="https://img.shields.io/badge/QQ%20Group-WeChatDataAnalysis-12B7F5?logo=tencentqq&logoColor=white" alt="QQ Group" /></a>
    <img src="https://img.shields.io/badge/Python-3776AB?logo=Python&logoColor=white" alt="Python" />
-    <img src="https://img.shields.io/badge/FastAPI-009688?logo=FastAPI&logoColor=white" alt="FastAPI" />
    <img src="https://img.shields.io/badge/Vue.js-4FC08D?logo=Vue.js&logoColor=white" alt="Vue.js" />
    <img src="https://img.shields.io/badge/SQLite-003B57?logo=SQLite&logoColor=white" alt="SQLite" />
 </div>
@@ -189,8 +188,6 @@ npm run dist

 本项目的开发过程中参考了以下优秀的开源项目和资源：

-### 主要参考项目
-
 1. **[echotrace](https://github.com/ycccccccy/echotrace)** - 微信数据解析/取证工具
   - 本项目大量功能参考并复用其实现思路，提供了重要技术支持

@@ -215,12 +212,6 @@ npm run dist
 7. **[wx-dat](https://github.com/waaaaashi/wx-dat)** - 微信图片密钥获取工具
   - 实现真正的无头获取图片密钥，不再依赖扫描微信内存与点击朋友圈大图

-8. **PR #24 贡献者 [H3CoF6](https://github.com/H3CoF6)** - 微信密钥获取能力增强
-   - 无第三方工具依赖实现微信密钥获取能力
-   - 实现数据库密钥获取：实现形式参考 [wx_key](https://github.com/ycccccccy/wx_key) 项目，完成 Python 预编译 wheel 封装，详情见 [py_wx_key](https://github.com/H3CoF6/py_wx_key)
-   - 特征码不在 C++ 内硬编码，而由 Python 模块传入，减少 wheel 更新次数
-   - 实现真正的无头获取图片密钥，不再依赖扫描微信内存（以及点击朋友圈大图），感谢项目 [wx-dat](https://github.com/waaaaashi/wx-dat)
-
 ## Star History

 [![Star History Chart](https://api.star-history.com/svg?repos=LifeArchiveProject/WeChatDataAnalysis&type=Date)](https://www.star-history.com/#LifeArchiveProject/WeChatDataAnalysis&Date)
@@ -1,12 +1,12 @@
 {
  "name": "wechat-data-analysis-desktop",
-  "version": "0.2.1",
+  "version": "1.3.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "wechat-data-analysis-desktop",
-      "version": "0.2.1",
+      "version": "1.3.0",
      "devDependencies": {
        "concurrently": "^9.2.1",
        "cross-env": "^10.1.0",
@@ -1,7 +1,7 @@
 {
  "name": "wechat-data-analysis-desktop",
  "private": true,
-  "version": "0.2.1",
+  "version": "1.3.0",
  "main": "src/main.cjs",
  "scripts": {
    "dev": "concurrently -k -s first \"cd ..\\\\frontend && npm run dev\" \"cross-env ELECTRON_START_URL=http://localhost:3000 electron .\"",
@@ -57,7 +57,12 @@ const contentClass = computed(() =>
    : 'flex-1 overflow-auto min-h-0'
 )

-const showSidebar = computed(() => !String(route.path || '').startsWith('/wrapped'))
+const showSidebar = computed(() => {
+  const path = String(route.path || '')
+  if (path === '/') return false
+  if (path === '/decrypt' || path === '/detection-result' || path === '/decrypt-result') return false
+  return !(path === '/wrapped' || path.startsWith('/wrapped/'))
+})
 </script>

 <style>
@@ -786,6 +786,128 @@
    @apply px-3 py-3 border-b border-gray-100;
  }

+  /* 时间侧边栏（按日期定位） */
+  .time-sidebar {
+    @apply w-[420px] h-full flex flex-col bg-white border-l border-gray-200 flex-shrink-0;
+  }
+
+  .time-sidebar-header {
+    @apply flex items-center justify-between px-4 py-3 border-b border-gray-200 bg-gray-50;
+  }
+
+  .time-sidebar-title {
+    @apply flex items-center gap-2 text-sm font-medium text-gray-800;
+  }
+
+  .time-sidebar-close {
+    @apply p-1.5 text-gray-500 hover:text-gray-700 hover:bg-gray-200 rounded-md transition-colors;
+  }
+
+  .time-sidebar-body {
+    @apply flex-1 overflow-y-auto min-h-0;
+  }
+
+  .time-sidebar-status {
+    @apply px-4 py-2 text-xs text-gray-600 border-b border-gray-100;
+  }
+
+  .time-sidebar-status-error {
+    @apply text-red-600;
+  }
+
+  .calendar-header {
+    @apply flex items-center justify-between px-4 py-3;
+  }
+
+  .calendar-nav-btn {
+    @apply p-1.5 text-gray-500 hover:text-gray-700 hover:bg-gray-100 rounded-md transition-colors disabled:opacity-50 disabled:cursor-not-allowed;
+  }
+
+  .calendar-month-label {
+    @apply text-sm font-medium text-gray-800;
+  }
+
+  .calendar-month-label-selects {
+    @apply flex items-center gap-2;
+  }
+
+  .calendar-ym-select {
+    @apply text-xs px-2 py-1 rounded-md border border-gray-200 bg-white text-gray-800 hover:border-gray-300 focus:outline-none focus:ring-2 focus:ring-[#03C160]/20 disabled:opacity-60 disabled:cursor-not-allowed;
+  }
+
+  .calendar-weekdays {
+    @apply grid grid-cols-7 gap-1 px-4 pt-1;
+  }
+
+  .calendar-weekday {
+    @apply text-[11px] text-gray-400 text-center py-1;
+  }
+
+  .calendar-grid {
+    @apply grid grid-cols-7 gap-1 px-4 pb-4;
+  }
+
+  .calendar-day {
+    @apply h-9 rounded-md flex items-center justify-center text-xs font-medium transition-colors border border-gray-200 bg-white disabled:cursor-not-allowed;
+  }
+
+  .calendar-day-outside {
+    @apply bg-transparent border-transparent;
+  }
+
+  .calendar-day-empty {
+    @apply bg-gray-100 text-gray-400 border-gray-100;
+  }
+
+  .calendar-day-selected {
+    /* Keep background as-is (heatmap), but emphasize with a ring/outline. */
+    box-shadow: 0 0 0 2px rgba(3, 193, 96, 0.85);
+    border-color: rgba(3, 193, 96, 0.95) !important;
+  }
+
+  .calendar-day-l1 {
+    background: rgba(3, 193, 96, 0.12);
+    border-color: rgba(3, 193, 96, 0.18);
+    color: #065f46;
+  }
+
+  .calendar-day-l2 {
+    background: rgba(3, 193, 96, 0.24);
+    border-color: rgba(3, 193, 96, 0.28);
+    color: #065f46;
+  }
+
+  .calendar-day-l3 {
+    background: rgba(3, 193, 96, 0.38);
+    border-color: rgba(3, 193, 96, 0.40);
+    color: #064e3b;
+  }
+
+  .calendar-day-l4 {
+    background: rgba(3, 193, 96, 0.55);
+    border-color: rgba(3, 193, 96, 0.55);
+    color: #053d2e;
+  }
+
+  .calendar-day-l1:hover,
+  .calendar-day-l2:hover,
+  .calendar-day-l3:hover,
+  .calendar-day-l4:hover {
+    filter: brightness(0.98);
+  }
+
+  .calendar-day-number {
+    @apply select-none;
+  }
+
+  .time-sidebar-actions {
+    @apply px-4 pb-4;
+  }
+
+  .time-sidebar-action-btn {
+    @apply w-full text-xs px-3 py-2 rounded-md bg-[#03C160] text-white hover:bg-[#02a650] transition-colors disabled:opacity-60 disabled:cursor-not-allowed;
+  }
+
  /* 整合搜索框样式 */
  .search-input-combined {
    @apply flex items-center bg-white border-2 border-gray-200 rounded-lg overflow-hidden transition-all duration-200;
@@ -0,0 +1,29 @@
+<template>
+  <svg
+    :width="size"
+    :height="size"
+    viewBox="0 0 24 24"
+    version="1.1"
+    xmlns="http://www.w3.org/2000/svg"
+    aria-hidden="true"
+  >
+    <!-- Keep the SVG identical to WeFlow/src/components/LivePhotoIcon.tsx for visual consistency -->
+    <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round">
+      <g stroke="currentColor" stroke-width="2">
+        <circle fill="currentColor" stroke="none" cx="12" cy="12" r="2.5" />
+        <circle cx="12" cy="12" r="5.5" />
+        <circle cx="12" cy="12" r="9" stroke-dasharray="1 3.7" />
+      </g>
+    </g>
+  </svg>
+</template>
+
+<script setup>
+defineProps({
+  size: {
+    type: [Number, String],
+    default: 24
+  }
+})
+</script>
+
@@ -0,0 +1,793 @@
+<template>
+  <div ref="cardRoot" class="h-full w-full">
+    <WrappedCardShell :card-id="card.id" :title="card.title" :narrative="''" :variant="variant">
+      <template #narrative>
+        <div class="mt-1 wrapped-body text-sm sm:text-base text-[#6F6F6F] leading-relaxed">
+          <p class="whitespace-normal">
+            <template v-for="(seg, idx) in narrativeSegments" :key="`n-${idx}`">
+              <img
+                v-if="seg.type === 'emoji'"
+                :src="seg.src"
+                class="inline-block align-[-0.18em] rounded-[3px] wx-inline-emoji"
+                :style="{ width: `${seg.sizeEm}em`, height: `${seg.sizeEm}em` }"
+                :alt="seg.alt || 'emoji'"
+              />
+              <img
+                v-else-if="seg.type === 'sticker'"
+                :src="seg.src"
+                class="inline-block align-[-0.16em] rounded-[4px] wx-inline-emoji"
+                :style="{ width: `${seg.sizeEm}em`, height: `${seg.sizeEm}em` }"
+                :alt="seg.alt || 'sticker'"
+              />
+              <span
+                v-else-if="seg.type === 'num'"
+                class="wrapped-number text-[#07C160] font-semibold"
+              >
+                {{ seg.content }}
+              </span>
+              <span v-else>{{ seg.content }}</span>
+            </template>
+          </p>
+        </div>
+      </template>
+
+      <div class="w-full -mt-1 sm:-mt-2">
+        <div class="grid grid-cols-1 lg:grid-cols-12 gap-2">
+          <div class="lg:col-span-7 space-y-2 sm:space-y-2.5">
+            <div class="rounded-2xl border border-[#EDEDED] bg-white/65 p-2.5 sm:p-3">
+              <div class="wrapped-label text-xs text-[#00000066]">高频表情卡堆（Vue Bits）</div>
+              <div v-if="stackCardsData.length > 0" class="mt-2">
+                <div class="relative h-[9.4rem] sm:h-[9.8rem] rounded-xl overflow-visible">
+                  <div class="absolute inset-0 flex items-center justify-center">
+                    <Stack
+                      :randomRotation="true"
+                      :sensitivity="180"
+                      :sendToBackOnClick="false"
+                      :cardDimensions="stackCardDimensions"
+                      :cardsData="stackCardsData"
+                    />
+                  </div>
+                </div>
+
+                <div class="mt-2 flex flex-col items-center justify-center text-center">
+                  <div class="wrapped-number text-base text-[#07C160] font-semibold leading-tight">
+                    {{ formatInt(Number(stackTopCount || 0)) }} 次
+                  </div>
+
+                  <div
+                    class="mt-0.5 inline-flex items-center gap-1.5 rounded-md bg-[#00000008] px-1.5 py-1 max-w-full"
+                    :title="heroStickerOwnerName ? `常发送给 ${heroStickerOwnerName}` : '常发送给：未知'"
+                  >
+                    <span class="w-4 h-4 rounded-md overflow-hidden bg-[#0000000d] flex items-center justify-center flex-shrink-0">
+                      <img
+                        v-if="heroStickerOwnerAvatarUrl && avatarOk.topStickerOwner"
+                        :src="heroStickerOwnerAvatarUrl"
+                        class="w-full h-full object-cover"
+                        alt="avatar"
+                        @error="avatarOk.topStickerOwner = false"
+                      />
+                      <span v-else class="wrapped-number text-[10px] text-[#00000066]">
+                        {{ avatarFallback(heroStickerOwnerName) }}
+                      </span>
+                    </span>
+                    <span class="wrapped-body text-[11px] text-[#00000080] truncate">
+                      常发送给 <span class="text-[#07C160] font-semibold">{{ heroStickerOwnerName || '未知' }}</span>
+                    </span>
+                  </div>
+
+                  <div class="mt-1 wrapped-label text-[10px] text-[#00000055]">拖动表情卡片翻一翻</div>
+                </div>
+              </div>
+              <div v-else class="mt-2 wrapped-body text-xs text-[#00000055]">
+                暂无可展示的高频表情图片。
+              </div>
+            </div>
+
+            <div class="rounded-2xl border border-[#EDEDED] bg-white/65 p-2.5 sm:p-3">
+              <div class="flex items-center justify-between gap-3">
+                <div class="wrapped-label text-xs text-[#00000066]">Emoji Top（小黄脸 + Unicode）</div>
+                <div class="flex items-center gap-2 flex-shrink-0">
+                  <span class="wrapped-label text-[10px] px-2 py-0.5 rounded-md border bg-[#07C160]/10 text-[#07C160] border-[#07C160]/25">
+                    小黄脸
+                  </span>
+                  <span class="wrapped-label text-[10px] px-2 py-0.5 rounded-md border bg-[#0EA5E9]/10 text-[#0EA5E9] border-[#0EA5E9]/25">
+                    Unicode
+                  </span>
+                </div>
+              </div>
+
+              <div v-if="emojiBubbleRows.length > 0" class="mt-2">
+                <div class="grid grid-cols-4 sm:grid-cols-8 gap-2 sm:gap-2.5 place-items-end">
+                  <div
+                    v-for="row in emojiBubbleRows"
+                    :key="row.id"
+                    class="min-w-0 flex flex-col items-center gap-1"
+                    :title="`${row.label} · ${formatInt(row.count)}次`"
+                  >
+                    <div
+                      class="flex items-center justify-center rounded-full shadow-sm"
+                      :class="row.kind === 'wechat' ? 'bg-[#07C160]/14' : 'bg-[#0EA5E9]/12'"
+                      :style="{ width: `${row.size}px`, height: `${row.size}px` }"
+                    >
+                      <img
+                        v-if="row.kind === 'wechat' && row.assetPath && emojiAssetOk[row.key] !== false"
+                        :src="resolveEmojiAsset(row.assetPath)"
+                        class="w-3/4 h-3/4 object-contain"
+                        alt="emoji"
+                        @error="emojiAssetOk[row.key] = false"
+                      />
+                      <span v-else class="text-xl leading-none">
+                        {{ row.kind === 'unicode' ? row.label : '🙂' }}
+                      </span>
+                    </div>
+                    <div
+                      class="wrapped-number text-[10px] font-semibold leading-none"
+                      :class="row.kind === 'wechat' ? 'text-[#07C160]' : 'text-[#0EA5E9]'"
+                    >
+                      {{ formatInt(row.count) }}
+                    </div>
+                  </div>
+                </div>
+              </div>
+              <div v-else class="mt-2 wrapped-body text-xs text-[#00000066]">
+                今年没有统计到可识别的 Emoji（小黄脸/Unicode）。
+              </div>
+            </div>
+          </div>
+
+          <div class="lg:col-span-5 h-full min-h-[20rem] sm:min-h-[21.5rem] rounded-2xl border border-[#EDEDED] bg-white/65 p-2.5 sm:p-3 relative overflow-hidden">
+            <div class="relative z-[1] h-full flex flex-col">
+              <div class="wrapped-label text-xs text-[#00000066]">斗图热力时段</div>
+              <div class="mt-1 wrapped-body text-sm text-[#000000e6]">
+                <template v-if="peakHour !== null && peakWeekdayName">
+                  高峰在
+                  <span class="wrapped-number text-[#07C160] font-semibold">{{ peakWeekdayName }} {{ peakHour }}:00</span>
+                </template>
+                <template v-else>
+                  今年没有明显的斗图高峰时段
+                </template>
+              </div>
+
+              <div class="mt-2.5 h-16 sm:h-20 flex items-end gap-[2px]">
+                <div
+                  v-for="item in hourBars"
+                  :key="`hour-${item.hour}`"
+                  class="flex-1 min-w-0 rounded-sm bg-[#07C160]/20"
+                  :style="{ height: `${item.heightPct}%` }"
+                  :title="`${item.hour}:00 · ${formatInt(item.count)}次`"
+                />
+              </div>
+              <div class="mt-1.5 flex items-center justify-between wrapped-label text-[10px] text-[#00000055]">
+                <span>00</span>
+                <span>06</span>
+                <span>12</span>
+                <span>18</span>
+                <span>23</span>
+              </div>
+
+              <div class="mt-3 rounded-xl border border-[#EDEDED] bg-white/60 p-2.5 flex-1 flex flex-col">
+                <div class="wrapped-label text-[11px] text-[#00000066]">表情新鲜度</div>
+                <div class="mt-2 grid grid-cols-1 gap-2.5">
+                  <div class="rounded-lg bg-[#07C160]/10 px-3 py-2.5 flex items-center justify-between gap-3">
+                    <div class="min-w-0">
+                      <div class="wrapped-label text-[11px] text-[#00000066]">年度新解锁</div>
+                      <div class="mt-1.5 wrapped-number text-lg text-[#07C160] font-semibold leading-tight">
+                        {{ formatInt(newStickerCountThisYear) }}
+                      </div>
+                      <div class="wrapped-label text-[11px] text-[#00000055]">
+                        占类型 {{ newStickerSharePct }}%
+                      </div>
+                    </div>
+                    <div v-if="newStickerDecorDisplayItems.length > 0" class="grid grid-cols-3 gap-2 flex-shrink-0">
+                      <div
+                        v-for="item in newStickerDecorDisplayItems"
+                        :key="`new-chip-${item.id}`"
+                        class="w-11 h-11 sm:w-12 sm:h-12 rounded-[10px] overflow-hidden ring-1 ring-[#00000014] bg-white/60"
+                      >
+                        <img
+                          v-if="item.src && stickerDecorOk[item.id] !== false"
+                          :src="item.src"
+                          class="w-full h-full object-cover"
+                          alt=""
+                          @error="stickerDecorOk[item.id] = false"
+                        />
+                      </div>
+                    </div>
+                  </div>
+
+                  <div class="rounded-lg bg-[#0EA5E9]/10 px-3 py-2.5 flex items-center justify-between gap-3">
+                    <div class="min-w-0">
+                      <div class="wrapped-label text-[11px] text-[#00000066]">回温表情</div>
+                      <div class="mt-1.5 wrapped-number text-lg text-[#0EA5E9] font-semibold leading-tight">
+                        {{ formatInt(revivedStickerCount) }}
+                      </div>
+                      <div class="wrapped-label text-[11px] text-[#00000055] leading-tight">
+                        间隔≥{{ formatInt(revivedMinGapDays) }}天，最长 {{ formatInt(revivedMaxGapDays) }} 天
+                      </div>
+                    </div>
+                    <div v-if="revivedStickerDecorDisplayItems.length > 0" class="grid grid-cols-3 gap-2 flex-shrink-0">
+                      <div
+                        v-for="item in revivedStickerDecorDisplayItems"
+                        :key="`rev-chip-${item.id}`"
+                        class="w-11 h-11 sm:w-12 sm:h-12 rounded-[10px] overflow-hidden ring-1 ring-[#00000014] bg-white/60"
+                      >
+                        <img
+                          v-if="item.src && stickerDecorOk[item.id] !== false"
+                          :src="item.src"
+                          class="w-full h-full object-cover"
+                          alt=""
+                          @error="stickerDecorOk[item.id] = false"
+                        />
+                      </div>
+                    </div>
+                  </div>
+                </div>
+
+                <div class="mt-2 wrapped-body text-[11px] text-[#00000066]">
+                  今年共用过 <span class="wrapped-number text-[#07C160] font-semibold">{{ formatInt(uniqueStickerTypeCount) }}</span> 种表情，
+                  回温占比 <span class="wrapped-number text-[#0EA5E9] font-semibold">{{ revivedStickerSharePct }}</span>%。
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </WrappedCardShell>
+
+    <Teleport to="body">
+      <div v-if="cursorFxEnabled && isCardVisible && cursorTrails.length > 0" class="emoji-cursor-layer" aria-hidden="true">
+        <img
+          v-for="item in cursorTrails"
+          :key="item.id"
+          class="emoji-cursor-item"
+          :style="{
+            left: `${item.x}px`,
+            top: `${item.y}px`,
+            width: `${item.size}px`,
+            height: `${item.size}px`,
+            '--drift-x': `${item.driftX}px`,
+            '--drift-y': `${item.driftY}px`
+          }"
+          :src="item.src"
+          alt=""
+          draggable="false"
+        />
+      </div>
+    </Teleport>
+  </div>
+</template>
+
+<script setup>
+import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue'
+import Stack from '~/components/wrapped/shared/VueBitsStack.vue'
+import WechatEmojiTable, { parseTextWithEmoji } from '~/utils/wechat-emojis'
+
+const props = defineProps({
+  card: { type: Object, required: true },
+  variant: { type: String, default: 'panel' } // 'panel' | 'slide'
+})
+
+const nfInt = new Intl.NumberFormat('zh-CN', { maximumFractionDigits: 0 })
+const formatInt = (n) => nfInt.format(Math.round(Number(n) || 0))
+
+const mediaBase = process.client ? 'http://localhost:8000' : ''
+const resolveMediaUrl = (value, opts = { backend: false }) => {
+  const raw = String(value || '').trim()
+  if (!raw) return ''
+  if (/^https?:\/\//i.test(raw)) {
+    try {
+      const host = new URL(raw).hostname.toLowerCase()
+      if (host.endsWith('.qpic.cn') || host.endsWith('.qlogo.cn')) {
+        return `${mediaBase}/api/chat/media/proxy_image?url=${encodeURIComponent(raw)}`
+      }
+    } catch {}
+    return raw
+  }
+  if (opts.backend || raw.startsWith('/api/')) {
+    return `${mediaBase}${raw.startsWith('/') ? '' : '/'}${raw}`
+  }
+  return raw.startsWith('/') ? raw : `/${raw}`
+}
+
+const resolveEmojiAsset = (value) => {
+  const raw = String(value || '').trim()
+  if (!raw) return ''
+  if (/^https?:\/\//i.test(raw)) return raw
+  if (raw.startsWith('/wxemoji/')) return raw
+  if (raw.startsWith('/')) return raw
+  return `/wxemoji/${raw}`
+}
+
+const resolveStickerUrl = (st) => {
+  const remote = resolveMediaUrl(st?.emojiUrl, { backend: true })
+  if (remote) return remote
+  const asset = resolveEmojiAsset(st?.emojiAssetPath)
+  return asset || ''
+}
+
+const splitTextByNumbers = (text) => {
+  const raw = String(text || '')
+  if (!raw) return []
+  const parts = raw.split(/(\d[\d,.]*)/g)
+  const out = []
+  for (const p of parts) {
+    if (!p) continue
+    if (/^\d[\d,.]*$/.test(p)) out.push({ type: 'num', content: p })
+    else out.push({ type: 'text', content: p })
+  }
+  return out
+}
+
+const appendParsedText = (segments, text) => {
+  const parsed = parseTextWithEmoji(String(text || ''))
+  for (const seg of parsed) {
+    if (seg?.type === 'emoji' && seg.emojiSrc) {
+      segments.push({
+        type: 'emoji',
+        src: resolveEmojiAsset(seg.emojiSrc),
+        alt: seg.content || 'emoji',
+        sizeEm: 1.12
+      })
+      continue
+    }
+    const inner = splitTextByNumbers(seg?.content || '')
+    for (const x of inner) segments.push(x)
+  }
+}
+
+const sentStickerCount = computed(() => Number(props.card?.data?.sentStickerCount || 0))
+const stickerActiveDays = computed(() => Number(props.card?.data?.stickerActiveDays || 0))
+const peakHour = computed(() => {
+  const h = props.card?.data?.peakHour
+  return Number.isFinite(Number(h)) ? Number(h) : null
+})
+const peakWeekdayName = computed(() => String(props.card?.data?.peakWeekdayName || '').trim())
+
+const stickerPerActiveDayText = computed(() => {
+  const v = Number(props.card?.data?.stickerPerActiveDay || 0)
+  return Number.isFinite(v) ? v.toFixed(1) : '0.0'
+})
+const uniqueStickerTypeCount = computed(() => Number(props.card?.data?.uniqueStickerTypeCount || 0))
+const newStickerCountThisYear = computed(() => Number(props.card?.data?.newStickerCountThisYear || 0))
+const revivedStickerCount = computed(() => Number(props.card?.data?.revivedStickerCount || 0))
+const revivedMinGapDays = computed(() => Number(props.card?.data?.revivedMinGapDays || 60))
+const revivedMaxGapDays = computed(() => Number(props.card?.data?.revivedMaxGapDays || 0))
+const newStickerSharePct = computed(() => {
+  const v = Number(props.card?.data?.newStickerShare)
+  if (Number.isFinite(v) && v >= 0) return Math.max(0, Math.min(100, Math.round(v * 100)))
+  const total = Math.max(0, Number(uniqueStickerTypeCount.value || 0))
+  if (total <= 0) return 0
+  return Math.max(0, Math.min(100, Math.round((Number(newStickerCountThisYear.value || 0) / total) * 100)))
+})
+const revivedStickerSharePct = computed(() => {
+  const v = Number(props.card?.data?.revivedStickerShare)
+  if (Number.isFinite(v) && v >= 0) return Math.max(0, Math.min(100, Math.round(v * 100)))
+  const total = Math.max(0, Number(uniqueStickerTypeCount.value || 0))
+  if (total <= 0) return 0
+  return Math.max(0, Math.min(100, Math.round((Number(revivedStickerCount.value || 0) / total) * 100)))
+})
+const newStickerSamples = computed(() => {
+  const arr = props.card?.data?.newStickerSamples
+  return Array.isArray(arr) ? arr : []
+})
+const revivedStickerSamples = computed(() => {
+  const arr = props.card?.data?.revivedStickerSamples
+  return Array.isArray(arr) ? arr : []
+})
+
+const buildDecorStickerItems = (rows, prefix) => {
+  const out = []
+  const seen = new Set()
+  for (let idx = 0; idx < rows.length; idx += 1) {
+    const st = rows[idx] || {}
+    const rawId = String(st?.md5 || st?.emojiAssetPath || st?.emojiUrl || `${prefix}-${idx}`).trim()
+    if (!rawId || seen.has(rawId)) continue
+    seen.add(rawId)
+    out.push({
+      id: `${prefix}-${rawId}`,
+      src: resolveStickerUrl(st),
+      count: Math.max(0, Number(st?.count || 0)),
+      gapDays: Math.max(0, Number(st?.gapDays || 0))
+    })
+    if (out.length >= 4) break
+  }
+  return out
+}
+
+const topStickers = computed(() => {
+  const arr = props.card?.data?.topStickers
+  return Array.isArray(arr) ? arr : []
+})
+
+const newStickerDecorItems = computed(() => buildDecorStickerItems(newStickerSamples.value, 'new'))
+const revivedStickerDecorItems = computed(() => buildDecorStickerItems(revivedStickerSamples.value, 'revived'))
+const topStickerDecorItems = computed(() => buildDecorStickerItems(topStickers.value, 'top'))
+const toRenderableDecor = (items) => items.filter((x) => String(x?.src || '').trim())
+const decorFallbackPool = computed(() => {
+  const out = []
+  const seen = new Set()
+  for (const item of [
+    ...toRenderableDecor(newStickerDecorItems.value),
+    ...toRenderableDecor(revivedStickerDecorItems.value),
+    ...toRenderableDecor(topStickerDecorItems.value)
+  ]) {
+    const key = String(item?.src || '').trim()
+    if (!key || seen.has(key)) continue
+    seen.add(key)
+    out.push(item)
+    if (out.length >= 6) break
+  }
+  return out
+})
+const newStickerDecorDisplayItems = computed(() => {
+  const own = toRenderableDecor(newStickerDecorItems.value).slice(0, 3)
+  if (own.length > 0) return own
+  return decorFallbackPool.value.slice(0, 3)
+})
+const revivedStickerDecorDisplayItems = computed(() => {
+  const own = toRenderableDecor(revivedStickerDecorItems.value).slice(0, 3)
+  if (own.length > 0) return own
+  const fallback = decorFallbackPool.value.slice(3, 6)
+  return fallback.length > 0 ? fallback : decorFallbackPool.value.slice(0, 3)
+})
+
+const heroSticker = computed(() => {
+  const arr = topStickers.value
+  return Array.isArray(arr) && arr.length > 0 ? arr[0] : null
+})
+
+const heroStickerUrl = computed(() => resolveStickerUrl(heroSticker.value))
+const heroStickerOwnerName = computed(() => String(heroSticker.value?.sampleDisplayName || heroSticker.value?.sampleUsername || '').trim())
+const heroStickerOwnerAvatarUrl = computed(() => resolveMediaUrl(heroSticker.value?.sampleAvatarUrl, { backend: true }))
+
+const stackCardDimensions = { width: 140, height: 140 }
+
+const stackCardsData = computed(() => {
+  const seen = new Set()
+  const out = []
+  for (const st of topStickers.value) {
+    const key = String(st?.md5 || st?.emojiAssetPath || st?.emojiUrl || '').trim()
+    if (!key || seen.has(key)) continue
+    const src = resolveStickerUrl(st)
+    if (!src) continue
+    seen.add(key)
+    out.push({ id: key, img: src })
+    if (out.length >= 4) break
+  }
+  if (out.length > 0) return out
+  return allWechatEmojiAssets.value.slice(0, 4).map((img, idx) => ({ id: `wx-${idx}`, img }))
+})
+
+const stackTopCount = computed(() => Number(heroSticker.value?.count || 0))
+
+const hourBars = computed(() => {
+  const raw = Array.isArray(props.card?.data?.stickerHourCounts) ? props.card.data.stickerHourCounts : []
+  const counts = Array.from({ length: 24 }, (_, i) => Math.max(0, Number(raw[i] || 0)))
+  const maxV = Math.max(1, ...counts)
+  return counts.map((count, hour) => ({
+    hour,
+    count,
+    heightPct: Math.max(8, Math.round((count / maxV) * 100))
+  }))
+})
+
+const topTextEmojis = computed(() => {
+  const arr = props.card?.data?.topTextEmojis
+  return Array.isArray(arr) ? arr : []
+})
+const topWechatEmojis = computed(() => {
+  const arr = props.card?.data?.topWechatEmojis
+  return Array.isArray(arr) ? arr : []
+})
+const topUnicodeEmojis = computed(() => {
+  const arr = props.card?.data?.topUnicodeEmojis
+  return Array.isArray(arr) ? arr : []
+})
+
+const smallWechatEmojiChips = computed(() => {
+  if (topWechatEmojis.value.length > 0) {
+    return topWechatEmojis.value.map((x) => ({
+      key: String(x?.key || ''),
+      count: Number(x?.count || 0),
+      assetPath: String(x?.assetPath || '')
+    }))
+  }
+  return topTextEmojis.value.map((x) => ({
+    key: String(x?.key || ''),
+    count: Number(x?.count || 0),
+    assetPath: String(x?.assetPath || '')
+  }))
+})
+
+const emojiAssetOk = reactive({})
+watch(
+  smallWechatEmojiChips,
+  (arr) => {
+    for (const k of Object.keys(emojiAssetOk)) delete emojiAssetOk[k]
+    if (!Array.isArray(arr)) return
+    for (const em of arr) {
+      const key = String(em?.key || '').trim()
+      if (key) emojiAssetOk[key] = true
+    }
+  },
+  { immediate: true }
+)
+
+const emojiChartRows = computed(() => {
+  const wechat = smallWechatEmojiChips.value
+    .slice(0, 4)
+    .map((x, idx) => ({
+      id: `w-${String(x?.key || idx)}`,
+      kind: 'wechat',
+      key: String(x?.key || idx),
+      label: String(x?.key || '').trim() || '微信表情',
+      count: Math.max(0, Number(x?.count || 0)),
+      assetPath: String(x?.assetPath || '').trim()
+    }))
+
+  const unicode = topUnicodeEmojis.value
+    .slice(0, 4)
+    .map((x, idx) => ({
+      id: `u-${String(x?.emoji || idx)}`,
+      kind: 'unicode',
+      key: String(x?.emoji || idx),
+      label: String(x?.emoji || '').trim() || '😀',
+      count: Math.max(0, Number(x?.count || 0)),
+      assetPath: ''
+    }))
+
+  const rows = [...wechat, ...unicode].filter((x) => x.count > 0 && x.label)
+  const maxV = Math.max(1, ...rows.map((x) => x.count))
+  return rows
+    .sort((a, b) => b.count - a.count)
+    .map((x) => ({
+      ...x,
+      pct: Math.max(8, Math.round((x.count / maxV) * 100))
+    }))
+})
+
+const emojiBubbleRows = computed(() => {
+  const rows = emojiChartRows.value
+  if (!rows.length) return []
+  const maxV = Math.max(1, ...rows.map((x) => x.count))
+  return rows.map((x) => {
+    const ratio = Math.max(0, Math.min(1, x.count / maxV))
+    const size = Math.round(32 + Math.sqrt(ratio) * 36)
+    return { ...x, size: Math.max(28, Math.min(72, size)) }
+  })
+})
+
+const stickerDecorOk = reactive({})
+watch(
+  () => [...newStickerDecorItems.value, ...revivedStickerDecorItems.value],
+  (arr) => {
+    for (const k of Object.keys(stickerDecorOk)) delete stickerDecorOk[k]
+    if (!Array.isArray(arr)) return
+    for (const x of arr) {
+      const key = String(x?.id || '').trim()
+      if (key) stickerDecorOk[key] = true
+    }
+  },
+  { immediate: true }
+)
+
+const avatarOk = reactive({ topStickerOwner: true })
+watch(heroStickerOwnerAvatarUrl, () => { avatarOk.topStickerOwner = true })
+
+const avatarFallback = (name) => {
+  const s = String(name || '').trim()
+  return s ? s[0] : '?'
+}
+
+const narrativeSegments = computed(() => {
+  const out = []
+
+  if (sentStickerCount.value > 0) {
+    appendParsedText(
+      out,
+      `这一年，你用 ${formatInt(sentStickerCount.value)} 张表情包把聊天变得更有温度；在 ${formatInt(
+        stickerActiveDays.value
+      )} 个活跃日里，日均 ${stickerPerActiveDayText.value} 张。`
+    )
+  } else {
+    appendParsedText(out, '这一年你几乎没发过表情包。')
+  }
+
+  if (peakHour.value !== null && peakWeekdayName.value) {
+    appendParsedText(out, `你最活跃的时刻是 ${peakWeekdayName.value} ${peakHour.value}:00。`)
+  }
+
+  let hasTail = false
+  if (heroSticker.value) {
+    appendParsedText(out, '年度 C 位表情是 ')
+    if (heroStickerUrl.value) {
+      out.push({ type: 'sticker', src: heroStickerUrl.value, alt: '年度 C 位表情', sizeEm: 1.22 })
+    } else {
+      appendParsedText(out, '（图片缺失）')
+    }
+    appendParsedText(out, `（${formatInt(Number(heroSticker.value?.count || 0))} 次）`)
+    hasTail = true
+  }
+
+  const topWechat = topWechatEmojis.value[0]
+  const topText = topTextEmojis.value[0]
+  if (topWechat) {
+    appendParsedText(out, `${hasTail ? '，' : ''}你最常用的小黄脸是 `)
+    if (topWechat.assetPath) {
+      out.push({
+        type: 'emoji',
+        src: resolveEmojiAsset(topWechat.assetPath),
+        alt: topWechat.key || 'emoji',
+        sizeEm: 1.16
+      })
+    } else {
+      appendParsedText(out, topWechat.key || '')
+    }
+    appendParsedText(out, `（${formatInt(Number(topWechat.count || 0))} 次）`)
+    hasTail = true
+  } else if (topText) {
+    appendParsedText(out, `${hasTail ? '，' : ''}在文字聊天里，你最常打的小黄脸是 `)
+    if (topText.assetPath) {
+      out.push({
+        type: 'emoji',
+        src: resolveEmojiAsset(topText.assetPath),
+        alt: topText.key || 'emoji',
+        sizeEm: 1.16
+      })
+    } else {
+      appendParsedText(out, topText.key || '')
+    }
+    appendParsedText(out, `（${formatInt(Number(topText.count || 0))} 次）`)
+    hasTail = true
+  } else {
+    appendParsedText(out, `${hasTail ? '，' : ''}今年没有命中可识别的小黄脸`)
+    hasTail = true
+  }
+
+  const topUnicode = topUnicodeEmojis.value[0]
+  if (topUnicode) {
+    appendParsedText(
+      out,
+      `${hasTail ? '，' : ''}普通 Emoji 最常用 ${topUnicode.emoji}（${formatInt(Number(topUnicode.count || 0))} 次）。`
+    )
+  } else if (hasTail) {
+    appendParsedText(out, '。')
+  }
+  return out
+})
+
+const cardRoot = ref(null)
+const isCardVisible = ref(false)
+const cursorTrails = ref([])
+const cursorFxEnabled = ref(true)
+const allWechatEmojiAssets = computed(() => {
+  const values = Object.values(WechatEmojiTable || {})
+  const uniq = new Set()
+  for (const x of values) {
+    const p = resolveEmojiAsset(String(x || '').trim())
+    if (p) uniq.add(p)
+  }
+  return Array.from(uniq)
+})
+
+let trailSeq = 0
+let lastSpawnAt = 0
+let lastSpawnX = -9999
+let lastSpawnY = -9999
+const TRAIL_LIFETIME_MS = 780
+const MIN_SPAWN_INTERVAL_MS = 28
+const MIN_SPAWN_DISTANCE = 10
+const MAX_TRAIL_COUNT = 32
+
+const checkCardVisible = () => {
+  if (!process.client) return false
+  const rect = cardRoot.value?.getBoundingClientRect?.()
+  if (!rect) return false
+  const vh = window.innerHeight || 0
+  const vw = window.innerWidth || 0
+  return rect.bottom > vh * 0.12 && rect.top < vh * 0.88 && rect.right > 0 && rect.left < vw
+}
+
+const spawnCursorTrail = (x, y) => {
+  const pool = allWechatEmojiAssets.value
+  if (!pool.length) return
+  const src = pool[Math.floor(Math.random() * pool.length)]
+  const item = {
+    id: ++trailSeq,
+    x,
+    y,
+    src,
+    size: 18 + Math.floor(Math.random() * 8),
+    driftX: Math.round((Math.random() - 0.5) * 30),
+    driftY: 20 + Math.floor(Math.random() * 20)
+  }
+  cursorTrails.value = [...cursorTrails.value.slice(-MAX_TRAIL_COUNT), item]
+  setTimeout(() => {
+    cursorTrails.value = cursorTrails.value.filter((t) => t.id !== item.id)
+  }, TRAIL_LIFETIME_MS)
+}
+
+const onWindowPointerMove = (e) => {
+  if (!process.client || !cursorFxEnabled.value) return
+  if (e?.pointerType === 'touch') return
+  const visible = checkCardVisible()
+  isCardVisible.value = visible
+  if (!visible) return
+
+  const x = Number(e.clientX)
+  const y = Number(e.clientY)
+  if (!Number.isFinite(x) || !Number.isFinite(y)) return
+
+  const now = performance.now()
+  const dx = x - lastSpawnX
+  const dy = y - lastSpawnY
+  const dist = Math.hypot(dx, dy)
+  if ((now - lastSpawnAt) < MIN_SPAWN_INTERVAL_MS && dist < MIN_SPAWN_DISTANCE) return
+
+  lastSpawnAt = now
+  lastSpawnX = x
+  lastSpawnY = y
+  spawnCursorTrail(x, y)
+}
+
+const onWindowPointerLeave = () => {
+  lastSpawnX = -9999
+  lastSpawnY = -9999
+}
+
+onMounted(() => {
+  if (!process.client) return
+  try {
+    const mq = window.matchMedia('(prefers-reduced-motion: reduce)')
+    cursorFxEnabled.value = !mq.matches
+  } catch {
+    cursorFxEnabled.value = true
+  }
+  isCardVisible.value = checkCardVisible()
+  window.addEventListener('pointermove', onWindowPointerMove, { passive: true })
+  window.addEventListener('pointerleave', onWindowPointerLeave, { passive: true })
+})
+
+onBeforeUnmount(() => {
+  if (process.client) {
+    window.removeEventListener('pointermove', onWindowPointerMove)
+    window.removeEventListener('pointerleave', onWindowPointerLeave)
+  }
+  cursorTrails.value = []
+})
+</script>
+
+<style scoped>
+.wx-inline-emoji {
+  object-fit: contain;
+}
+
+.emoji-cursor-layer {
+  position: fixed;
+  inset: 0;
+  pointer-events: none;
+  overflow: hidden;
+  z-index: 80;
+}
+
+.emoji-cursor-item {
+  position: fixed;
+  pointer-events: none;
+  user-select: none;
+  transform: translate(-50%, -50%);
+  opacity: 0.94;
+  animation: emoji-cursor-float 780ms ease-out forwards;
+  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.18));
+}
+
+@keyframes emoji-cursor-float {
+  0% {
+    opacity: 0.94;
+    transform: translate(-50%, -50%) scale(0.88);
+  }
+  100% {
+    opacity: 0;
+    transform: translate(calc(-50% + var(--drift-x)), calc(-50% - var(--drift-y))) scale(1.16);
+  }
+}
+</style>
@@ -0,0 +1,294 @@
+<template>
+  <div class="vb-stack relative select-none" :style="stackStyle">
+    <div
+      v-for="(card, index) in cards"
+      :key="String(card.id)"
+      class="vb-stack-card absolute top-1/2 left-1/2 overflow-hidden rounded-2xl bg-white/80 shadow-sm"
+      :style="{
+        width: `${dims.width}px`,
+        height: `${dims.height}px`,
+        touchAction: index === cards.length - 1 ? 'none' : 'auto',
+        pointerEvents: index === cards.length - 1 ? 'auto' : 'none'
+      }"
+      :ref="(el) => onCardRef(card.id, el)"
+      @pointerdown="(e) => onPointerDown(e, card.id, index)"
+      @pointermove="onPointerMove"
+      @pointerup="onPointerUp"
+      @pointercancel="onPointerCancel"
+    >
+      <img :src="card.img" class="w-full h-full object-cover" alt="" draggable="false" />
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, nextTick, onMounted, ref, watch } from 'vue'
+import { gsap } from 'gsap'
+
+type StackCard = {
+  id: string | number
+  img: string
+}
+
+const props = withDefaults(
+  defineProps<{
+    randomRotation?: boolean
+    sensitivity?: number
+    sendToBackOnClick?: boolean
+    cardDimensions?: { width?: number; height?: number }
+    cardsData?: StackCard[]
+  }>(),
+  {
+    randomRotation: false,
+    sensitivity: 180,
+    sendToBackOnClick: true,
+    cardDimensions: () => ({ width: 200, height: 200 }),
+    cardsData: () => []
+  }
+)
+
+const dims = computed(() => {
+  const w = Number(props.cardDimensions?.width)
+  const h = Number(props.cardDimensions?.height)
+  return {
+    width: Number.isFinite(w) && w > 0 ? Math.floor(w) : 200,
+    height: Number.isFinite(h) && h > 0 ? Math.floor(h) : 200
+  }
+})
+
+const stackStyle = computed(() => ({
+  width: `${dims.value.width}px`,
+  height: `${dims.value.height}px`
+}))
+
+const cards = ref<StackCard[]>([])
+const elMap = new Map<string, HTMLDivElement>()
+const rotationMap = ref(new Map<string, number>())
+const mounted = ref(false)
+
+const ROT_RANGE_DEG = 7
+const STACK_OFFSET_X = 2
+const STACK_OFFSET_Y = 4
+const STACK_SCALE_STEP = 0.03
+const MAX_TILT_DEG = 22
+
+function normalizeCards(data: unknown): StackCard[] {
+  const raw = Array.isArray(data) ? data : []
+  const out: StackCard[] = []
+  for (const item of raw) {
+    const id = (item as any)?.id
+    const img = String((item as any)?.img || '').trim()
+    if (id === null || id === undefined) continue
+    if (!img) continue
+    out.push({ id, img })
+  }
+  return out
+}
+
+function ensureRotations(list: StackCard[]) {
+  const next = new Map(rotationMap.value)
+  if (!props.randomRotation) {
+    for (const c of list) next.set(String(c.id), 0)
+    rotationMap.value = next
+    return
+  }
+  for (const c of list) {
+    const key = String(c.id)
+    if (next.has(key)) continue
+    next.set(key, Math.round((Math.random() * 2 - 1) * ROT_RANGE_DEG))
+  }
+  rotationMap.value = next
+}
+
+function onCardRef(id: StackCard['id'], el: Element | null) {
+  const key = String(id)
+  if (el && el instanceof HTMLDivElement) elMap.set(key, el)
+  else elMap.delete(key)
+}
+
+function applyLayout(animate: boolean) {
+  if (!mounted.value) return
+  const total = cards.value.length
+  if (total === 0) return
+
+  cards.value.forEach((card, idx) => {
+    const key = String(card.id)
+    const el = elMap.get(key)
+    if (!el) return
+
+    const orderFromTop = total - 1 - idx
+    const x = orderFromTop * STACK_OFFSET_X
+    const y = orderFromTop * STACK_OFFSET_Y
+    const scale = Math.max(0.88, 1 - orderFromTop * STACK_SCALE_STEP)
+    const rotation = rotationMap.value.get(key) ?? 0
+
+    const tweenVars: gsap.TweenVars = {
+      x,
+      y,
+      rotation,
+      rotationX: 0,
+      rotationY: 0,
+      scale,
+      xPercent: -50,
+      yPercent: -50,
+      zIndex: idx + 1,
+      transformOrigin: 'center center',
+      ease: 'power3.out',
+      duration: animate ? 0.32 : 0
+    }
+
+    gsap.killTweensOf(el)
+    if (animate) gsap.to(el, tweenVars)
+    else gsap.set(el, tweenVars)
+  })
+}
+
+watch(
+  () => props.cardsData,
+  (val) => {
+    const nextCards = normalizeCards(val)
+    cards.value = nextCards
+    ensureRotations(nextCards)
+    nextTick(() => applyLayout(false))
+  },
+  { immediate: true }
+)
+
+watch(
+  () => [props.randomRotation, props.cardDimensions?.width, props.cardDimensions?.height] as const,
+  () => {
+    ensureRotations(cards.value)
+    nextTick(() => applyLayout(false))
+  }
+)
+
+onMounted(() => {
+  mounted.value = true
+  applyLayout(false)
+})
+
+const clamp = (v: number, min: number, max: number) => Math.min(max, Math.max(min, v))
+
+let activePointerId: number | null = null
+let activeCardId: string | null = null
+let startClientX = 0
+let startClientY = 0
+let startX = 0
+let startY = 0
+let startRotationZ = 0
+let startScale = 1
+let lastDx = 0
+let lastDy = 0
+
+function sendToBack(id: string) {
+  if (cards.value.length < 2) return
+  const list = cards.value.slice()
+  const idx = list.findIndex((c) => String(c.id) === id)
+  if (idx < 0) return
+  const [card] = list.splice(idx, 1)
+  if (!card) return
+  cards.value = [card, ...list]
+}
+
+function onPointerDown(e: PointerEvent, id: StackCard['id'], index: number) {
+  if (activePointerId !== null) return
+  if (index !== cards.value.length - 1) return
+
+  const key = String(id)
+  const el = elMap.get(key)
+  if (!el) return
+
+  activePointerId = e.pointerId
+  activeCardId = key
+  startClientX = e.clientX
+  startClientY = e.clientY
+  startX = Number(gsap.getProperty(el, 'x')) || 0
+  startY = Number(gsap.getProperty(el, 'y')) || 0
+  startRotationZ = Number(gsap.getProperty(el, 'rotation')) || 0
+  startScale = Number(gsap.getProperty(el, 'scale')) || 1
+  lastDx = 0
+  lastDy = 0
+
+  try {
+    el.setPointerCapture(e.pointerId)
+  } catch {}
+
+  gsap.killTweensOf(el)
+  gsap.set(el, { zIndex: 999 })
+  gsap.to(el, { scale: startScale * 1.03, duration: 0.12, ease: 'power2.out' })
+}
+
+function onPointerMove(e: PointerEvent) {
+  if (activePointerId === null || e.pointerId !== activePointerId) return
+  const key = activeCardId
+  if (!key) return
+  const el = elMap.get(key)
+  if (!el) return
+
+  const dx = e.clientX - startClientX
+  const dy = e.clientY - startClientY
+  lastDx = dx
+  lastDy = dy
+
+  const w = Math.max(1, dims.value.width)
+  const h = Math.max(1, dims.value.height)
+  const nx = dx / (w * 0.55)
+  const ny = dy / (h * 0.55)
+  const tiltY = clamp(Math.tanh(nx) * MAX_TILT_DEG, -MAX_TILT_DEG, MAX_TILT_DEG)
+  const tiltX = clamp(-Math.tanh(ny) * MAX_TILT_DEG, -MAX_TILT_DEG, MAX_TILT_DEG)
+
+  gsap.set(el, {
+    x: startX + dx,
+    y: startY + dy,
+    rotation: startRotationZ + dx / 18,
+    rotationX: tiltX,
+    rotationY: tiltY
+  })
+}
+
+function finishPointer(id: number, shouldSendBack: boolean) {
+  const key = activeCardId
+  activePointerId = null
+  activeCardId = null
+
+  const el = key ? elMap.get(key) : null
+  if (el) {
+    try {
+      el.releasePointerCapture(id)
+    } catch {}
+  }
+
+  if (shouldSendBack && key) sendToBack(key)
+  applyLayout(true)
+}
+
+function onPointerUp(e: PointerEvent) {
+  if (activePointerId === null || e.pointerId !== activePointerId) return
+  const dist = Math.hypot(lastDx, lastDy)
+  const clickLike = dist < 6
+  const shouldSendBack = dist > Number(props.sensitivity || 0) || (props.sendToBackOnClick && clickLike)
+  finishPointer(e.pointerId, shouldSendBack)
+}
+
+function onPointerCancel(e: PointerEvent) {
+  if (activePointerId === null || e.pointerId !== activePointerId) return
+  finishPointer(e.pointerId, false)
+}
+</script>
+
+<style scoped>
+.vb-stack {
+  perspective: 1000px;
+}
+
+.vb-stack-card {
+  will-change: transform;
+  transform-style: preserve-3d;
+  backface-visibility: hidden;
+  cursor: grab;
+}
+
+.vb-stack-card:active {
+  cursor: grabbing;
+}
+</style>
@@ -329,6 +329,10 @@ const PREVIEW_BY_KIND = {
  'chat/reply_speed': {
    summary: '回复速度',
    question: '谁是你愿意秒回的那个人？'
+  },
+  'emoji/annual_universe': {
+    summary: '梗图年鉴',
+    question: '你这一年最常丢出的表情包是哪张？'
  }
 }

@@ -180,6 +180,46 @@ export const useApi = () => {
    return await request(url)
  }

+  // 聊天记录日历热力图：某月每日消息数
+  const getChatMessageDailyCounts = async (params = {}) => {
+    const query = new URLSearchParams()
+    if (params && params.account) query.set('account', params.account)
+    if (params && params.username) query.set('username', params.username)
+    if (params && params.year != null) query.set('year', String(params.year))
+    if (params && params.month != null) query.set('month', String(params.month))
+    const url = '/chat/messages/daily_counts' + (query.toString() ? `?${query.toString()}` : '')
+    return await request(url)
+  }
+
+  // 聊天记录定位锚点：某日第一条 / 会话最早一条
+  const getChatMessageAnchor = async (params = {}) => {
+    const query = new URLSearchParams()
+    if (params && params.account) query.set('account', params.account)
+    if (params && params.username) query.set('username', params.username)
+    if (params && params.kind) query.set('kind', String(params.kind))
+    if (params && params.date) query.set('date', String(params.date))
+    const url = '/chat/messages/anchor' + (query.toString() ? `?${query.toString()}` : '')
+    return await request(url)
+  }
+
+  // 解析嵌套合并转发聊天记录（通过 server_id）
+  const resolveNestedChatHistory = async (params = {}) => {
+    const query = new URLSearchParams()
+    if (params && params.account) query.set('account', params.account)
+    if (params && params.server_id != null) query.set('server_id', String(params.server_id))
+    const url = '/chat/chat_history/resolve' + (query.toString() ? `?${query.toString()}` : '')
+    return await request(url)
+  }
+
+  // 解析卡片/小程序等 App 消息（通过 server_id）
+  const resolveAppMsg = async (params = {}) => {
+    const query = new URLSearchParams()
+    if (params && params.account) query.set('account', params.account)
+    if (params && params.server_id != null) query.set('server_id', String(params.server_id))
+    const url = '/chat/appmsg/resolve' + (query.toString() ? `?${query.toString()}` : '')
+    return await request(url)
+  }
+
  // 朋友圈时间线
  const listSnsTimeline = async (params = {}) => {
    const query = new URLSearchParams()
@@ -196,6 +236,16 @@ export const useApi = () => {
    return await request(url)
  }

+  // 朋友圈联系人列表（按发圈数统计）
+  const listSnsUsers = async (params = {}) => {
+    const query = new URLSearchParams()
+    if (params && params.account) query.set('account', params.account)
+    if (params && params.keyword) query.set('keyword', String(params.keyword))
+    if (params && params.limit != null) query.set('limit', String(params.limit))
+    const url = '/sns/users' + (query.toString() ? `?${query.toString()}` : '')
+    return await request(url)
+  }
+
  // 朋友圈图片本地缓存候选（用于错图时手动选择）
  const listSnsMediaCandidates = async (params = {}) => {
    const query = new URLSearchParams()
@@ -294,6 +344,8 @@ export const useApi = () => {
        media_kinds: Array.isArray(data.media_kinds) ? data.media_kinds : ['image', 'emoji', 'video', 'video_thumb', 'voice', 'file'],
        output_dir: data.output_dir == null ? null : String(data.output_dir || '').trim(),
        allow_process_key_extract: !!data.allow_process_key_extract,
+        download_remote_media: !!data.download_remote_media,
+        html_page_size: data.html_page_size != null ? Number(data.html_page_size) : 1000,
        privacy_mode: !!data.privacy_mode,
        file_name: data.file_name || null
      }
@@ -314,6 +366,31 @@ export const useApi = () => {
    return await request(`/chat/exports/${encodeURIComponent(String(exportId))}`, { method: 'DELETE' })
  }

+  // 朋友圈导出（离线 HTML zip）
+  const createSnsExport = async (data = {}) => {
+    return await request('/sns/exports', {
+      method: 'POST',
+      body: {
+        account: data.account || null,
+        scope: data.scope || 'selected',
+        usernames: Array.isArray(data.usernames) ? data.usernames : [],
+        use_cache: data.use_cache == null ? true : !!data.use_cache,
+        output_dir: data.output_dir == null ? null : String(data.output_dir || '').trim(),
+        file_name: data.file_name || null
+      }
+    })
+  }
+
+  const getSnsExport = async (exportId) => {
+    if (!exportId) throw new Error('Missing exportId')
+    return await request(`/sns/exports/${encodeURIComponent(String(exportId))}`)
+  }
+
+  const cancelSnsExport = async (exportId) => {
+    if (!exportId) throw new Error('Missing exportId')
+    return await request(`/sns/exports/${encodeURIComponent(String(exportId))}`, { method: 'DELETE' })
+  }
+
  // 联系人
  const listChatContacts = async (params = {}) => {
    const query = new URLSearchParams()
@@ -407,7 +484,12 @@ export const useApi = () => {
    buildChatSearchIndex,
    listChatSearchSenders,
    getChatMessagesAround,
+    getChatMessageDailyCounts,
+    getChatMessageAnchor,
+    resolveNestedChatHistory,
+    resolveAppMsg,
    listSnsTimeline,
+    listSnsUsers,
    listSnsMediaCandidates,
    saveSnsMediaPicks,
    openChatMediaFolder,
@@ -419,6 +501,9 @@ export const useApi = () => {
    getChatExport,
    listChatExports,
    cancelChatExport,
+    createSnsExport,
+    getSnsExport,
+    cancelSnsExport,
    listChatContacts,
    exportChatContacts,
    getWrappedAnnual,
@@ -46,29 +46,34 @@
              <div v-else-if="error" class="p-4 text-sm text-red-500 whitespace-pre-wrap">{{ error }}</div>
              <div v-else-if="contacts.length === 0" class="p-4 text-sm text-gray-500">暂无联系人</div>
              <div v-else>
-                <div
-                  v-for="contact in contacts"
-                  :key="contact.username"
-                  class="px-3 py-2 border-b border-gray-100 flex items-center gap-3"
-                >
-                  <div class="w-10 h-10 rounded-md overflow-hidden bg-gray-300 shrink-0" :class="{ 'privacy-blur': privacyMode }">
-                    <img v-if="contact.avatar" :src="contact.avatar" :alt="contact.displayName" class="w-full h-full object-cover" referrerpolicy="no-referrer" />
-                    <div v-else class="w-full h-full flex items-center justify-center text-white text-xs font-bold" style="background-color:#4B5563">{{ contact.displayName?.charAt(0) || '?' }}</div>
+                <div v-for="group in groupedContacts" :key="group.key">
+                  <div class="px-3 py-1 text-xs font-semibold text-gray-500 bg-gray-50 border-b border-gray-100">
+                    {{ group.key }}
                  </div>
-                  <div class="min-w-0 flex-1" :class="{ 'privacy-blur': privacyMode }">
-                    <div class="text-sm text-gray-900 truncate">{{ contact.displayName }}</div>
-                    <div class="text-xs text-gray-500 truncate">{{ contact.username }}</div>
-                    <div class="text-[11px] text-gray-500 truncate" v-if="contact.type !== 'group' && (contact.region || contact.source)">
-                      <span v-if="contact.region">地区：{{ contact.region }}</span>
-                      <span v-if="contact.region && contact.source"> · </span>
-                      <span
-                        v-if="contact.source"
-                        :title="contact.sourceScene != null ? `来源场景码：${contact.sourceScene}` : ''"
-                      >来源：{{ contact.source }}</span>
+                  <div
+                    v-for="contact in group.items"
+                    :key="contact.username"
+                    class="px-3 py-2 border-b border-gray-100 flex items-center gap-3"
+                  >
+                    <div class="w-10 h-10 rounded-md overflow-hidden bg-gray-300 shrink-0" :class="{ 'privacy-blur': privacyMode }">
+                      <img v-if="contact.avatar" :src="contact.avatar" :alt="contact.displayName" class="w-full h-full object-cover" referrerpolicy="no-referrer" />
+                      <div v-else class="w-full h-full flex items-center justify-center text-white text-xs font-bold" style="background-color:#4B5563">{{ contact.displayName?.charAt(0) || '?' }}</div>
+                    </div>
+                    <div class="min-w-0 flex-1" :class="{ 'privacy-blur': privacyMode }">
+                      <div class="text-sm text-gray-900 truncate">{{ contact.displayName }}</div>
+                      <div class="text-xs text-gray-500 truncate">{{ contact.username }}</div>
+                      <div class="text-[11px] text-gray-500 truncate" v-if="contact.type !== 'group' && (contact.region || contact.source)">
+                        <span v-if="contact.region">地区：{{ contact.region }}</span>
+                        <span v-if="contact.region && contact.source"> · </span>
+                        <span
+                          v-if="contact.source"
+                          :title="contact.sourceScene != null ? `来源场景码：${contact.sourceScene}` : ''"
+                        >来源：{{ contact.source }}</span>
+                      </div>
+                    </div>
+                    <div class="text-xs px-2 py-0.5 rounded" :class="typeBadgeClass(contact.type)">
+                      {{ typeLabel(contact.type) }}
                    </div>
-                  </div>
-                  <div class="text-xs px-2 py-0.5 rounded" :class="typeBadgeClass(contact.type)">
-                    {{ typeLabel(contact.type) }}
                  </div>
                </div>
              </div>
@@ -184,6 +189,54 @@ const typeBadgeClass = (type) => {
  return 'bg-gray-100 text-gray-600'
 }

+const normalizeContactGroupKey = (value) => {
+  const key = String(value || '').trim().toUpperCase()
+  if (key.length === 1 && key >= 'A' && key <= 'Z') return key
+  return '#'
+}
+
+const buildContactSortKey = (contact) => {
+  const pinyinKey = String(contact?.pinyinKey || '').trim().toLowerCase()
+  if (pinyinKey) return pinyinKey
+  const nameKey = String(contact?.displayName || '').trim().toLowerCase()
+  if (nameKey) return nameKey
+  return String(contact?.username || '').trim().toLowerCase()
+}
+
+const groupedContacts = computed(() => {
+  const list = Array.isArray(contacts.value) ? contacts.value : []
+  const rows = list.map((contact) => {
+    return {
+      contact,
+      groupKey: normalizeContactGroupKey(contact?.pinyinInitial),
+      sortKey: buildContactSortKey(contact),
+      usernameKey: String(contact?.username || '').trim().toLowerCase(),
+    }
+  })
+
+  rows.sort((a, b) => {
+    if (a.groupKey !== b.groupKey) {
+      if (a.groupKey === '#') return 1
+      if (b.groupKey === '#') return -1
+      return a.groupKey.localeCompare(b.groupKey)
+    }
+    const cmpKey = a.sortKey.localeCompare(b.sortKey)
+    if (cmpKey !== 0) return cmpKey
+    return a.usernameKey.localeCompare(b.usernameKey)
+  })
+
+  const groups = []
+  for (const row of rows) {
+    const last = groups[groups.length - 1]
+    if (!last || last.key !== row.groupKey) {
+      groups.push({ key: row.groupKey, items: [row.contact] })
+    } else {
+      last.items.push(row.contact)
+    }
+  }
+  return groups
+})
+
 const isDesktopExportRuntime = () => {
  return !!(process.client && window?.wechatDesktop?.chooseDirectory)
 }
@@ -89,6 +89,26 @@
                  </div>
                </div>
              </div>
+
+              <div class="rounded-lg border border-gray-200">
+                <div class="px-4 py-3 border-b border-gray-200 bg-gray-50">
+                  <div class="text-sm font-medium text-gray-900">朋友圈</div>
+                </div>
+                <div class="px-4 py-3 space-y-4">
+                  <div class="flex items-center justify-between gap-4">
+                    <div class="min-w-0">
+                      <div class="text-sm font-medium text-gray-900">朋友圈图片使用缓存</div>
+                      <div class="text-xs text-gray-500">开启：下载解密失败时回退本地缓存（默认开启）；关闭：每次都走下载+解密</div>
+                    </div>
+                    <input
+                      type="checkbox"
+                      class="h-4 w-4"
+                      :checked="snsUseCache"
+                      @change="onSnsUseCacheToggle"
+                    />
+                  </div>
+                </div>
+              </div>
            </div>
          </div>
        </div>
@@ -98,7 +118,7 @@
 </template>

 <script setup>
-import { DESKTOP_SETTING_AUTO_REALTIME_KEY, DESKTOP_SETTING_DEFAULT_TO_CHAT_KEY, readLocalBoolSetting, writeLocalBoolSetting } from '~/utils/desktop-settings'
+import { DESKTOP_SETTING_AUTO_REALTIME_KEY, DESKTOP_SETTING_DEFAULT_TO_CHAT_KEY, SNS_SETTING_USE_CACHE_KEY, readLocalBoolSetting, writeLocalBoolSetting } from '~/utils/desktop-settings'

 useHead({ title: '设置 - 微信数据分析助手' })

@@ -106,6 +126,7 @@ const isDesktopEnv = ref(false)

 const desktopAutoRealtime = ref(false)
 const desktopDefaultToChatWhenData = ref(false)
+const snsUseCache = ref(true)

 const desktopAutoLaunch = ref(false)
 const desktopAutoLaunchLoading = ref(false)
@@ -198,6 +219,12 @@ const onDesktopDefaultToChatToggle = (ev) => {
  writeLocalBoolSetting(DESKTOP_SETTING_DEFAULT_TO_CHAT_KEY, checked)
 }

+const onSnsUseCacheToggle = (ev) => {
+  const checked = !!ev?.target?.checked
+  snsUseCache.value = checked
+  writeLocalBoolSetting(SNS_SETTING_USE_CACHE_KEY, checked)
+}
+
 onMounted(async () => {
  if (process.client && typeof window !== 'undefined') {
    isDesktopEnv.value = !!window.wechatDesktop
@@ -205,6 +232,7 @@ onMounted(async () => {

  desktopAutoRealtime.value = readLocalBoolSetting(DESKTOP_SETTING_AUTO_REALTIME_KEY, false)
  desktopDefaultToChatWhenData.value = readLocalBoolSetting(DESKTOP_SETTING_DEFAULT_TO_CHAT_KEY, false)
+  snsUseCache.value = readLocalBoolSetting(SNS_SETTING_USE_CACHE_KEY, true)

  if (isDesktopEnv.value) {
    await refreshDesktopAutoLaunch()
@@ -13,6 +13,27 @@
    <!-- 左上角：刷新 + 复古模式开关 -->
    <div class="absolute top-6 left-6 z-20 select-none">
      <div class="flex items-center gap-3">
+        <button
+          type="button"
+          class="pointer-events-auto inline-flex items-center justify-center w-9 h-9 rounded-full bg-transparent text-[#07C160] hover:bg-[#07C160]/10 focus:outline-none focus-visible:ring-2 focus-visible:ring-[#07C160]/30 transition"
+          aria-label="返回上一级"
+          title="返回上一级"
+          @click="goBack"
+        >
+          <svg
+            class="w-4 h-4"
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            stroke-width="2"
+            stroke-linecap="round"
+            stroke-linejoin="round"
+            aria-hidden="true"
+          >
+            <path d="M10 19l-7-7m0 0l7-7m-7 7h18" />
+          </svg>
+        </button>
+
        <button
          type="button"
          class="pointer-events-auto inline-flex items-center justify-center w-9 h-9 rounded-full bg-transparent text-[#07C160] hover:bg-[#07C160]/10 focus:outline-none focus-visible:ring-2 focus-visible:ring-[#07C160]/30 disabled:opacity-60 disabled:cursor-not-allowed transition"
@@ -163,6 +184,12 @@
          variant="slide"
          class="h-full w-full"
        />
+        <Card04EmojiUniverse
+          v-else-if="c && (c.kind === 'emoji/annual_universe' || c.id === 4)"
+          :card="c"
+          variant="slide"
+          class="h-full w-full"
+        />
        <WrappedCardShell
          v-else
          :card-id="Number(c?.id || (idx + 1))"
@@ -285,6 +312,10 @@ const goTo = (i) => {
  activeIndex.value = clampIndex(i)
 }

+const goBack = async () => {
+  await router.push('/chat')
+}
+
 const next = () => goTo(activeIndex.value + 1)
 const prev = () => goTo(activeIndex.value - 1)

@@ -1,5 +1,7 @@
 export const DESKTOP_SETTING_AUTO_REALTIME_KEY = 'desktop.settings.autoRealtime'
 export const DESKTOP_SETTING_DEFAULT_TO_CHAT_KEY = 'desktop.settings.defaultToChatWhenData'
+// 朋友圈图片：是否允许使用缓存（默认开启）。关闭后会尽量每次都走下载+解密流程。
+export const SNS_SETTING_USE_CACHE_KEY = 'sns.settings.useCache'

 export const readLocalBoolSetting = (key, fallback = false) => {
  if (!process.client) return !!fallback
@@ -6,6 +6,7 @@

 import sqlite3
 import json
+import argparse
 from pathlib import Path
 from typing import Dict, List, Any
 from collections import defaultdict
@@ -127,6 +128,82 @@ class ConfigTemplateGenerator:
        
        try:
            cursor = conn.cursor()
+
+            def parse_columns_from_create_sql(create_sql: str) -> list[tuple[str, str]]:
+                """
+                从建表 SQL 中尽力解析列名（用于 FTS5/缺失 tokenizer 扩展导致 PRAGMA 失败的情况）。
+                返回 (name, type)；类型缺失时默认 TEXT。
+                """
+                out: list[tuple[str, str]] = []
+                if not create_sql:
+                    return out
+                try:
+                    start = create_sql.find("(")
+                    end = create_sql.rfind(")")
+                    if start == -1 or end == -1 or end <= start:
+                        return out
+                    inner = create_sql[start + 1:end]
+
+                    parts: list[str] = []
+                    buf = ""
+                    depth = 0
+                    for ch in inner:
+                        if ch == "(":
+                            depth += 1
+                        elif ch == ")":
+                            depth -= 1
+                        if ch == "," and depth == 0:
+                            parts.append(buf.strip())
+                            buf = ""
+                        else:
+                            buf += ch
+                    if buf.strip():
+                        parts.append(buf.strip())
+
+                    for part in parts:
+                        token = part.strip()
+                        if not token:
+                            continue
+                        low = token.lower()
+                        # 跳过约束/外键等
+                        if low.startswith(("constraint", "primary", "unique", "foreign", "check")):
+                            continue
+                        # fts5 选项（tokenize/prefix/content/content_rowid 等）
+                        if "=" in token:
+                            key = token.split("=", 1)[0].strip().lower()
+                            if key in ("tokenize", "prefix", "content", "content_rowid", "compress", "uncompress"):
+                                continue
+                        tokens = token.split()
+                        if not tokens:
+                            continue
+                        name = tokens[0].strip("`\"[]")
+                        typ = tokens[1].upper() if len(tokens) > 1 and "=" not in tokens[1] else "TEXT"
+                        out.append((name, typ))
+                except Exception:
+                    return out
+                return out
+
+            def get_table_columns(table_name: str) -> list[tuple[str, str]]:
+                # 先尝试 PRAGMA
+                try:
+                    cursor.execute(f"PRAGMA table_info({table_name})")
+                    columns = cursor.fetchall()
+                    if columns:
+                        return [(col[1], col[2]) for col in columns]
+                except Exception:
+                    pass
+
+                # 兜底：从 sqlite_master.sql 解析
+                try:
+                    cursor.execute(
+                        "SELECT sql FROM sqlite_master WHERE type='table' AND name=?",
+                        (table_name,),
+                    )
+                    row = cursor.fetchone()
+                    create_sql = row[0] if row and len(row) > 0 else ""
+                    return parse_columns_from_create_sql(create_sql or "")
+                except Exception:
+                    return []
            
            # 获取所有表名
            cursor.execute("SELECT name FROM sqlite_master WHERE type='table'")
@@ -152,13 +229,10 @@ class ConfigTemplateGenerator:
                    table_key = f"{prefix}_*"  # 使用模式名
                    
                    # 获取代表表的字段信息
-                    cursor.execute(f"PRAGMA table_info({representative_table})")
-                    columns = cursor.fetchall()
+                    columns = get_table_columns(representative_table)
                    
                    fields = {}
-                    for col in columns:
-                        field_name = col[1]
-                        field_type = col[2]
+                    for field_name, field_type in columns:
                        fields[field_name] = {
                            "type": field_type,
                            "meaning": "",  # 留空供用户填写
@@ -188,13 +262,10 @@ class ConfigTemplateGenerator:
                
                try:
                    # 获取表字段信息
-                    cursor.execute(f"PRAGMA table_info({table_name})")
-                    columns = cursor.fetchall()
+                    columns = get_table_columns(table_name)
                    
                    fields = {}
-                    for col in columns:
-                        field_name = col[1]
-                        field_type = col[2]
+                    for field_name, field_type in columns:
                        fields[field_name] = {
                            "type": field_type,
                            "meaning": "",  # 留空供用户填写
@@ -219,16 +290,23 @@ class ConfigTemplateGenerator:
        finally:
            conn.close()
    
-    def generate_template(self, output_file: str = "wechat_db_config_template.json"):
+    def generate_template(
+        self,
+        output_file: str = "wechat_db_config_template.json",
+        *,
+        include_excluded: bool = False,
+        include_message_shards: bool = False,
+        exclude_db_stems: set[str] | None = None,
+    ):
        """生成配置模板"""
        print("开始生成微信数据库配置模板...")
        
        # 定义要排除的数据库模式和描述
-        excluded_patterns = {
-            r'biz_message_\d+\.db$': '企业微信聊天记录数据库',
-            r'bizchat\.db$': '企业微信联系人数据库',
-            r'contact_fts\.db$': '搜索联系人数据库',
-            r'favorite_fts\.db$': '搜索收藏数据库'
+        excluded_patterns = {} if include_excluded else {
+            r'biz_message_\d+\.db$': '公众号/企业微信聊天记录数据库（通常不参与个人聊天分析）',
+            r'bizchat\.db$': '企业微信联系人/会话数据库（通常不参与个人聊天分析）',
+            r'contact_fts\.db$': '联系人搜索索引数据库（FTS）',
+            r'favorite_fts\.db$': '收藏搜索索引数据库（FTS）'
        }
        
        # 查找所有数据库文件
@@ -263,29 +341,38 @@ class ConfigTemplateGenerator:
            for excluded_file, description in excluded_files:
                print(f"  - {excluded_file.name} ({description})")
        
+        # 显式排除指定 stem（不含 .db）
+        if exclude_db_stems:
+            before = len(db_files)
+            db_files = [p for p in db_files if p.stem not in exclude_db_stems]
+            after = len(db_files)
+            if before != after:
+                print(f"\n按 --exclude-db-stem 排除 {before - after} 个数据库: {sorted(exclude_db_stems)}")
+
        print(f"\n实际处理 {len(db_files)} 个数据库文件")
        
        # 过滤message数据库，只保留倒数第二个（与主脚本逻辑一致）
-        message_numbered_dbs = []
-        message_other_dbs = []
-        
-        for db in db_files:
-            if re.match(r'message_\d+$', db.stem):  # message_{数字}.db
-                message_numbered_dbs.append(db)
-            elif db.stem.startswith('message_'):  # message_fts.db, message_resource.db等
-                message_other_dbs.append(db)
-        
-        if len(message_numbered_dbs) > 1:
-            # 按数字编号排序（提取数字进行排序）
-            message_numbered_dbs.sort(key=lambda x: int(re.search(r'message_(\d+)', x.stem).group(1)))
-            # 选择倒数第二个（按编号排序）
-            selected_message_db = message_numbered_dbs[-2]  # 倒数第二个
-            print(f"检测到 {len(message_numbered_dbs)} 个message_{{数字}}.db数据库")
-            print(f"选择倒数第二个: {selected_message_db.name}")
-            
-            # 从db_files中移除其他message_{数字}.db数据库，但保留message_fts.db等
-            db_files = [db for db in db_files if not re.match(r'message_\d+$', db.stem)]
-            db_files.append(selected_message_db)
+        if not include_message_shards:
+            message_numbered_dbs = []
+            message_other_dbs = []
+
+            for db in db_files:
+                if re.match(r'message_\d+$', db.stem):  # message_{数字}.db
+                    message_numbered_dbs.append(db)
+                elif db.stem.startswith('message_'):  # message_fts.db, message_resource.db等
+                    message_other_dbs.append(db)
+
+            if len(message_numbered_dbs) > 1:
+                # 按数字编号排序（提取数字进行排序）
+                message_numbered_dbs.sort(key=lambda x: int(re.search(r'message_(\d+)', x.stem).group(1)))
+                # 选择倒数第二个（按编号排序）
+                selected_message_db = message_numbered_dbs[-2]  # 倒数第二个
+                print(f"检测到 {len(message_numbered_dbs)} 个message_{{数字}}.db数据库")
+                print(f"选择倒数第二个: {selected_message_db.name}")
+
+                # 从db_files中移除其他message_{数字}.db数据库，但保留message_fts.db等
+                db_files = [db for db in db_files if not re.match(r'message_\d+$', db.stem)]
+                db_files.append(selected_message_db)
        
        print(f"实际分析 {len(db_files)} 个数据库文件")
        
@@ -370,11 +457,24 @@ class ConfigTemplateGenerator:

 def main():
    """主函数"""
+    parser = argparse.ArgumentParser(description="微信数据库字段配置模板生成器")
+    parser.add_argument("--databases-path", default="output/databases", help="解密后的数据库根目录（按账号分目录）")
+    parser.add_argument("--output", default="wechat_db_config_template.json", help="输出 JSON 模板路径")
+    parser.add_argument("--include-excluded", action="store_true", help="包含默认会被排除的数据库（如 bizchat/contact_fts/favorite_fts 等）")
+    parser.add_argument("--include-message-shards", action="store_true", help="包含所有 message_{n}.db（否则仅保留倒数第二个作代表）")
+    parser.add_argument("--exclude-db-stem", action="append", default=[], help="按 stem（不含 .db）排除数据库，可重复，例如: --exclude-db-stem digital_twin")
+    args = parser.parse_args()
+
    print("微信数据库配置模板生成器")
    print("=" * 50)
-    
-    generator = ConfigTemplateGenerator()
-    generator.generate_template()
+
+    generator = ConfigTemplateGenerator(databases_path=args.databases_path)
+    generator.generate_template(
+        output_file=args.output,
+        include_excluded=bool(args.include_excluded),
+        include_message_shards=bool(args.include_message_shards),
+        exclude_db_stems=set(args.exclude_db_stem or []),
+    )

 if __name__ == "__main__":
-    main()
+    main()
@@ -1,6 +1,6 @@
 [project]
 name = "wechat-decrypt-tool"
-version = "0.2.1"
+version = "1.3.0"
 description = "Modern WeChat database decryption tool with React frontend"
 readme = "README.md"
 requires-python = ">=3.11"
@@ -1,5 +1,5 @@
 """微信数据库解密工具
 """

-__version__ = "0.1.0"
-__author__ = "WeChat Decrypt Tool"
+__version__ = "1.3.0"
+__author__ = "WeChat Decrypt Tool"
@@ -9,6 +9,7 @@ from starlette.exceptions import HTTPException as StarletteHTTPException
 from starlette.responses import FileResponse
 from starlette.staticfiles import StaticFiles

+from . import __version__ as APP_VERSION
 from .logging_config import setup_logging, get_logger
 from .path_fix import PathFixRoute
 from .chat_realtime_autosync import CHAT_REALTIME_AUTOSYNC
@@ -21,6 +22,7 @@ from .routers.health import router as _health_router
 from .routers.keys import router as _keys_router
 from .routers.media import router as _media_router
 from .routers.sns import router as _sns_router
+from .routers.sns_export import router as _sns_export_router
 from .routers.wechat_detection import router as _wechat_detection_router
 from .routers.wrapped import router as _wrapped_router
 from .wcdb_realtime import WCDB_REALTIME, shutdown as _wcdb_shutdown
@@ -32,7 +34,7 @@ logger = get_logger(__name__)
 app = FastAPI(
    title="微信数据库解密工具",
    description="现代化的微信数据库解密工具，支持微信信息检测和数据库解密功能",
-    version="0.1.0",
+    version=APP_VERSION,
 )

 # 设置自定义路由类
@@ -57,6 +59,7 @@ app.include_router(_chat_contacts_router)
 app.include_router(_chat_export_router)
 app.include_router(_chat_media_router)
 app.include_router(_sns_router)
+app.include_router(_sns_export_router)
 app.include_router(_wrapped_router)


@@ -8,7 +8,7 @@ from collections import Counter
 from datetime import datetime
 from pathlib import Path
 from typing import Any, Optional
-from urllib.parse import quote, urlparse
+from urllib.parse import parse_qs, quote, urlparse

 from fastapi import HTTPException

@@ -634,6 +634,32 @@ def _is_mp_weixin_article_url(url: str) -> bool:
    return "mp.weixin.qq.com/" in lu


+def _is_mp_weixin_feed_article_url(url: str) -> bool:
+    """Detect WeChat's PC feed/recommendation mp.weixin.qq.com share URLs.
+
+    These links often carry an `exptype` like:
+      masonry_feed_brief_content_elite_for_pcfeeds_u2i
+
+    WeChat desktop tends to render them in a cover-card style (image + bottom title),
+    so we use this as a hint to choose the 'cover' linkStyle.
+    """
+
+    u = str(url or "").strip()
+    if not u:
+        return False
+
+    try:
+        parsed = urlparse(u)
+        q = parse_qs(parsed.query or "")
+        for v in (q.get("exptype") or []):
+            if "masonry_feed" in str(v or "").lower():
+                return True
+    except Exception:
+        pass
+
+    return "exptype=masonry_feed" in u.lower()
+
+
 def _classify_link_share(*, app_type: int, url: str, source_username: str, desc: str) -> tuple[str, str]:
    src = str(source_username or "").strip().lower()
    is_official_article = bool(
@@ -647,7 +673,15 @@ def _classify_link_share(*, app_type: int, url: str, source_username: str, desc:
    hashtag_count = len(re.findall(r"#[^#\s]+", d))

    # 公众号文章中「封面图 + 底栏标题」卡片特征：摘要以 #话题# 风格为主。
-    link_style = "cover" if (is_official_article and (d.startswith("#") or hashtag_count >= 2)) else "default"
+    cover_like = bool(
+        is_official_article
+        and (
+            d.startswith("#")
+            or hashtag_count >= 2
+            or _is_mp_weixin_feed_article_url(url)
+        )
+    )
+    link_style = "cover" if cover_like else "default"
    return link_type, link_style


@@ -948,8 +982,12 @@ def _parse_app_message(text: str) -> dict[str, Any]:
            "recordItem": record_item or "",
        }

-    if app_type in (5, 68) and url:
-        thumb_url = _normalize_xml_url(_extract_xml_tag_text(text, "thumburl"))
+    if app_type in (4, 5, 68) and url:
+        # Many appmsg link cards (notably Bilibili shares with <type>4</type>) include a <patMsg> metadata block.
+        # DO NOT treat "<patmsg" presence as a pat message: it would misclassify normal link cards as "[拍一拍]".
+        thumb_url = _normalize_xml_url(
+            _extract_xml_tag_text(text, "thumburl") or _extract_xml_tag_text(text, "cdnthumburl")
+        )
        link_type, link_style = _classify_link_share(
            app_type=app_type,
            url=url,
@@ -1093,7 +1131,10 @@ def _parse_app_message(text: str) -> dict[str, Any]:
            "quoteVoiceLength": quote_voice_length,
        }

-    if app_type == 62 or "<patmsg" in lower or 'type="patmsg"' in lower or "type='patmsg'" in lower:
+    # Some versions may mark pat messages via sysmsg/appmsg tag attribute: <sysmsg type="patmsg">...</sysmsg>.
+    # Be strict here: lots of non-pat appmsg payloads still carry a nested <patMsg>...</patMsg> metadata block.
+    patmsg_attr = bool(re.search(r"<(sysmsg|appmsg)\b[^>]*\btype=['\"]patmsg['\"]", lower))
+    if app_type == 62 or patmsg_attr:
        return {"renderType": "system", "content": "[拍一拍]"}

    if app_type == 2000 or (
@@ -0,0 +1,169 @@
+from __future__ import annotations
+
+"""ISAAC-64 PRNG (WeFlow compatible).
+
+WeChat SNS live photo/video decryption uses a keystream generated by ISAAC-64 and
+XORs the first 128KB of the mp4 file. WeFlow's implementation reverses the
+generated byte array, so we mirror that behavior for compatibility.
+"""
+
+from typing import Any
+
+_MASK_64 = 0xFFFFFFFFFFFFFFFF
+
+
+def _u64(v: int) -> int:
+    return int(v) & _MASK_64
+
+
+class Isaac64:
+    def __init__(self, seed: Any):
+        seed_text = str(seed).strip()
+        if not seed_text:
+            seed_val = 0
+        else:
+            try:
+                # WeFlow seeds with BigInt(seed), where seed is usually a decimal string.
+                seed_val = int(seed_text, 0)
+            except Exception:
+                seed_val = 0
+
+        self.mm = [_u64(0) for _ in range(256)]
+        self.aa = _u64(0)
+        self.bb = _u64(0)
+        self.cc = _u64(0)
+        self.randrsl = [_u64(0) for _ in range(256)]
+        self.randrsl[0] = _u64(seed_val)
+        self.randcnt = 0
+        self._init(True)
+
+    def _init(self, flag: bool) -> None:
+        a = b = c = d = e = f = g = h = _u64(0x9E3779B97F4A7C15)
+
+        def mix() -> tuple[int, int, int, int, int, int, int, int]:
+            nonlocal a, b, c, d, e, f, g, h
+            a = _u64(a - e)
+            f = _u64(f ^ (h >> 9))
+            h = _u64(h + a)
+
+            b = _u64(b - f)
+            g = _u64(g ^ _u64(a << 9))
+            a = _u64(a + b)
+
+            c = _u64(c - g)
+            h = _u64(h ^ (b >> 23))
+            b = _u64(b + c)
+
+            d = _u64(d - h)
+            a = _u64(a ^ _u64(c << 15))
+            c = _u64(c + d)
+
+            e = _u64(e - a)
+            b = _u64(b ^ (d >> 14))
+            d = _u64(d + e)
+
+            f = _u64(f - b)
+            c = _u64(c ^ _u64(e << 20))
+            e = _u64(e + f)
+
+            g = _u64(g - c)
+            d = _u64(d ^ (f >> 17))
+            f = _u64(f + g)
+
+            h = _u64(h - d)
+            e = _u64(e ^ _u64(g << 14))
+            g = _u64(g + h)
+            return a, b, c, d, e, f, g, h
+
+        for _ in range(4):
+            mix()
+
+        for i in range(0, 256, 8):
+            if flag:
+                a = _u64(a + self.randrsl[i])
+                b = _u64(b + self.randrsl[i + 1])
+                c = _u64(c + self.randrsl[i + 2])
+                d = _u64(d + self.randrsl[i + 3])
+                e = _u64(e + self.randrsl[i + 4])
+                f = _u64(f + self.randrsl[i + 5])
+                g = _u64(g + self.randrsl[i + 6])
+                h = _u64(h + self.randrsl[i + 7])
+            mix()
+            self.mm[i] = a
+            self.mm[i + 1] = b
+            self.mm[i + 2] = c
+            self.mm[i + 3] = d
+            self.mm[i + 4] = e
+            self.mm[i + 5] = f
+            self.mm[i + 6] = g
+            self.mm[i + 7] = h
+
+        if flag:
+            for i in range(0, 256, 8):
+                a = _u64(a + self.mm[i])
+                b = _u64(b + self.mm[i + 1])
+                c = _u64(c + self.mm[i + 2])
+                d = _u64(d + self.mm[i + 3])
+                e = _u64(e + self.mm[i + 4])
+                f = _u64(f + self.mm[i + 5])
+                g = _u64(g + self.mm[i + 6])
+                h = _u64(h + self.mm[i + 7])
+                mix()
+                self.mm[i] = a
+                self.mm[i + 1] = b
+                self.mm[i + 2] = c
+                self.mm[i + 3] = d
+                self.mm[i + 4] = e
+                self.mm[i + 5] = f
+                self.mm[i + 6] = g
+                self.mm[i + 7] = h
+
+        self._isaac64()
+        self.randcnt = 256
+
+    def _isaac64(self) -> None:
+        self.cc = _u64(self.cc + 1)
+        self.bb = _u64(self.bb + self.cc)
+
+        for i in range(256):
+            x = self.mm[i]
+            if (i & 3) == 0:
+                # aa ^= ~(aa << 21)
+                self.aa = _u64(self.aa ^ (_u64(self.aa << 21) ^ _MASK_64))
+            elif (i & 3) == 1:
+                self.aa = _u64(self.aa ^ (self.aa >> 5))
+            elif (i & 3) == 2:
+                self.aa = _u64(self.aa ^ _u64(self.aa << 12))
+            else:
+                self.aa = _u64(self.aa ^ (self.aa >> 33))
+
+            self.aa = _u64(self.mm[(i + 128) & 255] + self.aa)
+            y = _u64(self.mm[(x >> 3) & 255] + self.aa + self.bb)
+            self.mm[i] = y
+            self.bb = _u64(self.mm[(y >> 11) & 255] + x)
+            self.randrsl[i] = self.bb
+
+    def get_next(self) -> int:
+        if self.randcnt == 0:
+            self._isaac64()
+            self.randcnt = 256
+        idx = 256 - self.randcnt
+        self.randcnt -= 1
+        return _u64(self.randrsl[idx])
+
+    def generate_keystream(self, size: int) -> bytes:
+        """Generate a keystream of `size` bytes (must be multiple of 8)."""
+        if size <= 0:
+            return b""
+        if size % 8 != 0:
+            raise ValueError("ISAAC64 keystream size must be multiple of 8 bytes.")
+
+        out = bytearray()
+        count = size // 8
+        for _ in range(count):
+            out.extend(int(self.get_next()).to_bytes(8, "little", signed=False))
+
+        # WeFlow reverses the entire byte array (Uint8Array.reverse()).
+        out.reverse()
+        return bytes(out)
+
@@ -14,8 +14,10 @@ import subprocess
 import hashlib
 import os
 import json
+import re
 import random
 import logging
+import asyncio
 import httpx
 from pathlib import Path
 from typing import Optional, List, Dict, Any
@@ -203,7 +205,56 @@ def get_db_key_workflow():

 # 远程 API 配置
 REMOTE_URL = "https://view.free.c3o.re/dashboard"
-NEXT_ACTION_ID = "7c8f99280c70626ccf5960cc4a68f368197e15f8e9"
+BASE_URL = "https://view.free.c3o.re"  # 用于拼接js
+
+# NEXT_ACTION_ID = "7c8f99280c70626ccf5960cc4a68f368197e15f8e9"  # 不可以硬编码
+
+
+async def fetch_js_and_scan(client: httpx.AsyncClient, js_path: str) -> Optional[str]:
+    """
+    异步下载单个 JS 文件并匹配 Action ID
+    """
+    full_url = f"{BASE_URL}{js_path}" if js_path.startswith("/") else js_path
+    try:
+        response = await client.get(full_url)
+        if response.status_code != 200:
+            return None
+
+        content = response.text
+
+        action_id_pattern = re.compile(r'createServerReference.*?["\']([a-f0-9]{42})["\'].*?["\']getUserConfigFromBytes["\']')
+
+        match = action_id_pattern.search(content)
+        if match:
+            found_id = match.group(1)
+            return found_id
+
+    except Exception as e:
+        logger.error(f"Error fetching {js_path}: {e}")
+    return None
+
+
+async def _get_next_action_id_async() -> str:
+    async with httpx.AsyncClient(timeout=10.0) as client:
+
+        resp = await client.get(REMOTE_URL)
+        html = resp.text
+
+        js_file_pattern = re.compile(r'src="(/_next/static/chunks/[^"]+\.js)"')
+        js_files = set(js_file_pattern.findall(html))
+
+        if not js_files:
+            raise Exception("未找到任何 Next.js chunk 文件，可能页面结构已变动。")
+
+        tasks = [fetch_js_and_scan(client, js_path) for js_path in js_files]
+
+        results = await asyncio.gather(*tasks)
+
+        for res in results:
+            if res:
+                return res
+
+        raise Exception("遍历了所有 JS 文件，但未找到匹配的 createServerReference ID。")


 def get_wechat_internal_global_config(wx_dir: Path, file_name1) -> bytes:
@@ -221,41 +272,20 @@ def get_wechat_internal_global_config(wx_dir: Path, file_name1) -> bytes:
    return Path(target_path).read_bytes()


-# def get_local_config_sha3_224() -> bytes:
-#     """
-#     不要在意，抽象的实现 哈哈哈
-#     """
-#     content = json.dumps({
-#         "wxfile_dir": "C:\\Users\\17078\\xwechat_files",
-#         "weixin_id_folder": "wxid_lnyf4hdo9csb12_f1c4",
-#         "cache_dir": "C:\\Users\\17078\\Desktop\\wxDBHook\\test\\wx-dat\\wx-dat\\.cache",
-#         "db_key": "",
-#         "port": 8001
-#     }, indent=4).encode("utf-8")
-#
-#     # 计算 SHA3-224
-#     digest = hashlib.sha3_224(content).digest()
-#     return digest
-
-# async def log_request(request):
-#     print(f"--- Request Raw ---")
-#     print(f"{request.method} {request.url} {request.extensions.get('http_version', b'HTTP/1.1').decode()}")
-#     for name, value in request.headers.items():
-#         print(f"{name}: {value}")
-#
-#     print()
-#
-#     body = request.read()
-#     if body:
-#         print(body.decode(errors='replace'))
-#     print(f"-------------------\n")
-

 async def fetch_and_save_remote_keys(account: Optional[str] = None) -> Dict[str, Any]:
    account_dir = _resolve_account_dir(account)
    wx_id_dir = _resolve_account_wxid_dir(account_dir)
    wxid = wx_id_dir.name

+    logger.info("尝试获取next_action_id")
+    try:
+        next_action_id = await _get_next_action_id_async()
+        logger.info(f"获取next_action_id成功: {next_action_id}")
+    except Exception as e:
+        raise RuntimeError(f"获取next_action_id失败：{e}")
+
+
    logger.info(f"正在为账号 {wxid} 获取密钥...")

    try:
@@ -274,7 +304,7 @@ async def fetch_and_save_remote_keys(account: Optional[str] = None) -> Dict[str,

    headers = {
        "Accept": "text/x-component",
-        "Next-Action": NEXT_ACTION_ID,
+        "Next-Action": next_action_id,
        "Next-Router-State-Tree": "%5B%22%22%2C%7B%22children%22%3A%5B%22dashboard%22%2C%7B%22children%22%3A%5B%22__PAGE__%22%2C%7B%7D%2Cnull%2Cnull%5D%7D%2Cnull%2Cnull%5D%7D%2Cnull%2Cnull%2Ctrue%5D",
        "Origin": "https://view.free.c3o.re",
        "Referer": "https://view.free.c3o.re/dashboard",
@@ -3,10 +3,12 @@ import json
 import re
 import sqlite3
 from datetime import datetime, timezone
+from functools import lru_cache
 from pathlib import Path
 from typing import Any, Literal, Optional

 from fastapi import APIRouter, HTTPException, Request
+from pypinyin import Style, lazy_pinyin
 from pydantic import BaseModel, Field

 from ..chat_helpers import (
@@ -96,6 +98,76 @@ def _to_optional_int(v: Any) -> Optional[int]:
        return None


+_PINYIN_CLEAN_RE = re.compile(r"[^a-z0-9]+")
+_PINYIN_ALPHA_RE = re.compile(r"[A-Za-z]")
+
+# 多音字姓氏：pypinyin 对单字默认读音不一定是姓氏读音（例如：曾= ceng / zeng）。
+# 这里在“姓名首字”场景优先采用常见姓氏读音，用于联系人列表的分组/排序。
+_SURNAME_PINYIN_OVERRIDES: dict[str, str] = {
+    "曾": "zeng",
+    "区": "ou",
+    "仇": "qiu",
+    "解": "xie",
+    "单": "shan",
+    "查": "zha",
+    "乐": "yue",
+    "朴": "piao",
+    "盖": "ge",
+    "缪": "miao",
+}
+
+
+@lru_cache(maxsize=4096)
+def _build_contact_pinyin_key(name: str) -> str:
+    text = _normalize_text(name)
+    if not text:
+        return ""
+
+    # Keep non-CJK segments so English names can be sorted/grouped as expected.
+    first = text[0]
+    override = _SURNAME_PINYIN_OVERRIDES.get(first)
+    if override:
+        rest = text[1:]
+        parts = [override]
+        if rest:
+            parts.extend(lazy_pinyin(rest, style=Style.NORMAL, errors="default"))
+    else:
+        parts = lazy_pinyin(text, style=Style.NORMAL, errors="default")
+    out: list[str] = []
+    for part in parts:
+        cleaned = _PINYIN_CLEAN_RE.sub("", _normalize_text(part).lower())
+        if cleaned:
+            out.append(cleaned)
+    return "".join(out)
+
+
+@lru_cache(maxsize=4096)
+def _build_contact_pinyin_initial(name: str) -> str:
+    text = _normalize_text(name).lstrip()
+    if not text:
+        return "#"
+
+    first = text[0]
+    if "A" <= first <= "Z":
+        return first
+    if "a" <= first <= "z":
+        return first.upper()
+
+    override = _SURNAME_PINYIN_OVERRIDES.get(first)
+    if override:
+        return override[0].upper()
+
+    # For CJK, try to convert the first character to pinyin initial.
+    parts = lazy_pinyin(first, style=Style.NORMAL, errors="ignore")
+    if parts:
+        m = _PINYIN_ALPHA_RE.search(parts[0])
+        if m:
+            return m.group(0).upper()
+
+    # Emoji / digits / symbols, etc.
+    return "#"
+
+
 def _decode_varint(raw: bytes, offset: int) -> tuple[Optional[int], int]:
    value = 0
    shift = 0
@@ -125,6 +197,7 @@ def _decode_proto_text(raw: bytes) -> str:

 def _parse_contact_extra_buffer(extra_buffer: Any) -> dict[str, Any]:
    out = {
+        "gender": 0,
        "signature": "",
        "country": "",
        "province": "",
@@ -160,6 +233,9 @@ def _parse_contact_extra_buffer(extra_buffer: Any) -> dict[str, Any]:
            if val is None:
                break
            idx = idx_next
+            if field_no == 2:
+                # 性别: 1=男, 2=女, 0=未知
+                out["gender"] = int(val)
            if field_no == 8:
                out["source_scene"] = int(val)
            continue
@@ -327,6 +403,8 @@ def _load_contact_rows_map(contact_db_path: Path) -> dict[str, dict[str, Any]]:
                    "verify_flag": _to_int(row["verify_flag"] if "verify_flag" in row.keys() else 0),
                    "big_head_url": _normalize_text(row["big_head_url"] if "big_head_url" in row.keys() else ""),
                    "small_head_url": _normalize_text(row["small_head_url"] if "small_head_url" in row.keys() else ""),
+                    "gender": _to_int(extra_info.get("gender")),
+                    "signature": _normalize_text(extra_info.get("signature")),
                    "country": _normalize_text(extra_info.get("country")),
                    "province": _normalize_text(extra_info.get("province")),
                    "city": _normalize_text(extra_info.get("city")),
@@ -481,6 +559,8 @@ def _collect_contacts_for_account(
        province = _normalize_text(row.get("province"))
        city = _normalize_text(row.get("city"))
        source_scene = _to_optional_int(row.get("source_scene"))
+        gender = _to_int(row.get("gender"))
+        signature = _normalize_text(row.get("signature"))

        item = {
            "username": username,
@@ -488,6 +568,8 @@ def _collect_contacts_for_account(
            "remark": _normalize_text(row.get("remark")),
            "nickname": _normalize_text(row.get("nick_name")),
            "alias": _normalize_text(row.get("alias")),
+            "gender": gender,
+            "signature": signature,
            "type": contact_type,
            "country": country,
            "province": province,
@@ -520,6 +602,8 @@ def _collect_contacts_for_account(
                "remark": "",
                "nickname": "",
                "alias": "",
+                "gender": 0,
+                "signature": "",
                "type": "group",
                "country": "",
                "province": "",
@@ -545,6 +629,9 @@ def _collect_contacts_for_account(
    )
    for item in contacts:
        item.pop("_sortTs", None)
+        name_for_pinyin = _normalize_text(item.get("displayName")) or _normalize_text(item.get("username"))
+        item["pinyinKey"] = _build_contact_pinyin_key(name_for_pinyin)
+        item["pinyinInitial"] = _build_contact_pinyin_initial(name_for_pinyin)
    return contacts


@@ -12,17 +12,31 @@ from ..path_fix import PathFixRoute

 router = APIRouter(route_class=PathFixRoute)

-ExportFormat = Literal["json", "txt"]
+ExportFormat = Literal["json", "txt", "html"]
 ExportScope = Literal["selected", "all", "groups", "singles"]
 MediaKind = Literal["image", "emoji", "video", "video_thumb", "voice", "file"]
-MessageType = Literal["text", "image", "emoji", "video", "voice", "file", "link", "transfer", "redPacket", "system", "quote", "voip"]
+MessageType = Literal[
+    "text",
+    "image",
+    "emoji",
+    "video",
+    "voice",
+    "chatHistory",
+    "file",
+    "link",
+    "transfer",
+    "redPacket",
+    "system",
+    "quote",
+    "voip",
+]


 class ChatExportCreateRequest(BaseModel):
    account: Optional[str] = Field(None, description="账号目录名（可选，默认使用第一个）")
    scope: ExportScope = Field("selected", description="导出范围：selected=指定会话；all=全部；groups=仅群聊；singles=仅单聊")
    usernames: list[str] = Field(default_factory=list, description="会话 username 列表（scope=selected 时使用）")
-    format: ExportFormat = Field("json", description="导出格式：json 或 txt（zip 内每个会话一个文件）")
+    format: ExportFormat = Field("json", description="导出格式：json/txt/html（zip 内每个会话一个文件；html 可离线打开 index.html 查看）")
    start_time: Optional[int] = Field(None, description="起始时间（Unix 秒，含）")
    end_time: Optional[int] = Field(None, description="结束时间（Unix 秒，含）")
    include_hidden: bool = Field(False, description="是否包含隐藏会话（scope!=selected 时）")
@@ -41,6 +55,14 @@ class ChatExportCreateRequest(BaseModel):
        False,
        description="预留字段：本项目不从微信进程提取媒体密钥，请使用 wx_key 获取并保存/批量解密",
    )
+    download_remote_media: bool = Field(
+        False,
+        description="HTML 导出时允许联网下载链接/引用缩略图等远程媒体（提高离线完整性）",
+    )
+    html_page_size: int = Field(
+        1000,
+        description="HTML 导出分页大小（每页消息数）；<=0 表示禁用分页（单文件，打开大聊天可能很卡）",
+    )
    privacy_mode: bool = Field(
        False,
        description="隐私模式导出：隐藏会话/用户名/内容，不打包头像与媒体",
@@ -64,6 +86,8 @@ async def create_chat_export(req: ChatExportCreateRequest):
        message_types=req.message_types,
        output_dir=req.output_dir,
        allow_process_key_extract=req.allow_process_key_extract,
+        download_remote_media=req.download_remote_media,
+        html_page_size=req.html_page_size,
        privacy_mode=req.privacy_mode,
        file_name=req.file_name,
    )
@@ -1019,6 +1019,171 @@ async def proxy_image(url: str):
    return resp


+def _origin_favicon_url(page_url: str) -> str:
+    """Best-effort favicon URL for a given page URL (origin + /favicon.ico)."""
+    u = str(page_url or "").strip()
+    if not u:
+        return ""
+    try:
+        p = urlparse(u)
+    except Exception:
+        return ""
+    if not p.scheme or not p.netloc:
+        return ""
+    return f"{p.scheme}://{p.netloc}/favicon.ico"
+
+
+def _resolve_final_url_for_favicon(page_url: str) -> str:
+    """Resolve final URL for redirects (used for favicon host inference)."""
+    u = str(page_url or "").strip()
+    if not u:
+        return ""
+
+    headers = {
+        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120 Safari/537.36",
+        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
+    }
+
+    # Prefer HEAD (no body). Some hosts reject HEAD; fall back to GET+stream.
+    try:
+        r = requests.head(u, headers=headers, timeout=10, allow_redirects=True)
+        try:
+            final = str(getattr(r, "url", "") or "").strip()
+            return final or u
+        finally:
+            try:
+                r.close()
+            except Exception:
+                pass
+    except Exception:
+        pass
+
+    try:
+        r = requests.get(u, headers=headers, timeout=10, allow_redirects=True, stream=True)
+        try:
+            final = str(getattr(r, "url", "") or "").strip()
+            return final or u
+        finally:
+            try:
+                r.close()
+            except Exception:
+                pass
+    except Exception:
+        return u
+
+
+@router.get("/api/chat/media/favicon", summary="获取网站 favicon（用于链接卡片来源头像）")
+async def get_favicon(url: str):
+    page_url = html.unescape(str(url or "")).strip()
+    if not page_url:
+        raise HTTPException(status_code=400, detail="Missing url.")
+    if not _is_safe_http_url(page_url):
+        raise HTTPException(status_code=400, detail="Invalid url (only public http/https allowed).")
+
+    # Resolve redirects first (e.g. b23.tv -> www.bilibili.com), so cached favicons are hit early.
+    final_url = _resolve_final_url_for_favicon(page_url)
+    candidates: list[str] = []
+    for u in (final_url, page_url):
+        fav = _origin_favicon_url(u)
+        if fav and fav not in candidates:
+            candidates.append(fav)
+
+    proxy_account = "_favicon"
+    max_bytes = 512 * 1024  # favicons should be small; protect against huge downloads.
+
+    for cand in candidates:
+        if not _is_safe_http_url(cand):
+            continue
+        source_url = normalize_avatar_source_url(cand)
+
+        cache_entry = get_avatar_cache_url_entry(proxy_account, source_url) if is_avatar_cache_enabled() else None
+        cache_file = avatar_cache_entry_file_exists(proxy_account, cache_entry)
+        if cache_entry and cache_file and avatar_cache_entry_is_fresh(cache_entry):
+            logger.info(f"[avatar_cache_hit] kind=favicon account={proxy_account} url={source_url}")
+            touch_avatar_cache_entry(proxy_account, cache_key_for_avatar_url(source_url))
+            headers = build_avatar_cache_response_headers(cache_entry)
+            return FileResponse(
+                str(cache_file),
+                media_type=str(cache_entry.get("media_type") or "application/octet-stream"),
+                headers=headers,
+            )
+
+        # Download favicon bytes (best-effort)
+        headers = {
+            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120 Safari/537.36",
+            "Accept": "image/avif,image/webp,image/apng,image/*,*/*;q=0.8",
+        }
+        r = None
+        try:
+            r = requests.get(source_url, headers=headers, timeout=20, stream=True, allow_redirects=True)
+            if int(getattr(r, "status_code", 0) or 0) != 200:
+                continue
+
+            ct = str((getattr(r, "headers", {}) or {}).get("Content-Type") or "").strip()
+            try:
+                cl = int((getattr(r, "headers", {}) or {}).get("content-length") or 0)
+            except Exception:
+                cl = 0
+            if cl and cl > max_bytes:
+                raise HTTPException(status_code=413, detail="Remote favicon too large.")
+
+            chunks: list[bytes] = []
+            total = 0
+            for chunk in r.iter_content(chunk_size=64 * 1024):
+                if not chunk:
+                    continue
+                chunks.append(chunk)
+                total += len(chunk)
+                if total > max_bytes:
+                    raise HTTPException(status_code=413, detail="Remote favicon too large.")
+            data = b"".join(chunks)
+        except HTTPException:
+            raise
+        except Exception:
+            continue
+        finally:
+            if r is not None:
+                try:
+                    r.close()
+                except Exception:
+                    pass
+
+        if not data:
+            continue
+
+        payload, media_type, _ext = _detect_media_type_and_ext(data)
+        if media_type == "application/octet-stream" and ct:
+            try:
+                mt = ct.split(";")[0].strip()
+                if mt.startswith("image/"):
+                    media_type = mt
+            except Exception:
+                pass
+
+        if not str(media_type or "").startswith("image/"):
+            continue
+
+        if is_avatar_cache_enabled():
+            entry, out_path = write_avatar_cache_payload(
+                proxy_account,
+                source_kind="url",
+                source_url=source_url,
+                payload=payload,
+                media_type=media_type,
+                ttl_seconds=AVATAR_CACHE_TTL_SECONDS,
+            )
+            if entry and out_path:
+                logger.info(f"[avatar_cache_download] kind=favicon account={proxy_account} url={source_url}")
+                headers = build_avatar_cache_response_headers(entry)
+                return FileResponse(str(out_path), media_type=media_type, headers=headers)
+
+        resp = Response(content=payload, media_type=media_type)
+        resp.headers["Cache-Control"] = f"public, max-age={AVATAR_CACHE_TTL_SECONDS}"
+        return resp
+
+    raise HTTPException(status_code=404, detail="favicon not found.")
+
+
@router.post("/api/chat/media/emoji/download", summary="下载表情消息资源到本地 resource")
 async def download_chat_emoji(req: EmojiDownloadRequest):
    md5 = str(req.md5 or "").strip().lower()
@@ -0,0 +1,114 @@
+import asyncio
+import json
+import time
+from typing import Literal, Optional
+
+from fastapi import APIRouter, HTTPException, Request
+from fastapi.responses import FileResponse, StreamingResponse
+from pydantic import BaseModel, Field
+
+from ..path_fix import PathFixRoute
+from ..sns_export_service import SNS_EXPORT_MANAGER
+
+router = APIRouter(route_class=PathFixRoute)
+
+ExportScope = Literal["selected", "all"]
+
+
+class SnsExportCreateRequest(BaseModel):
+    account: Optional[str] = Field(None, description="账号目录名（可选，默认使用第一个）")
+    scope: ExportScope = Field("selected", description="导出范围：selected=指定联系人；all=全部联系人")
+    usernames: list[str] = Field(default_factory=list, description="朋友圈 username 列表（scope=selected 时使用）")
+    use_cache: bool = Field(True, description="是否复用导出过程中的本地缓存（默认开启）")
+    output_dir: Optional[str] = Field(None, description="导出目录绝对路径（可选；不填时使用默认目录）")
+    file_name: Optional[str] = Field(None, description="导出 zip 文件名（可选，不含/含 .zip 都可）")
+
+
+@router.post("/api/sns/exports", summary="创建朋友圈导出任务（离线 HTML zip）")
+async def create_sns_export(req: SnsExportCreateRequest):
+    job = SNS_EXPORT_MANAGER.create_job(
+        account=req.account,
+        scope=req.scope,
+        usernames=req.usernames,
+        use_cache=bool(req.use_cache),
+        output_dir=req.output_dir,
+        file_name=req.file_name,
+    )
+    return {"status": "success", "job": job.to_public_dict()}
+
+
+@router.get("/api/sns/exports", summary="列出导出任务（内存）")
+async def list_sns_exports():
+    jobs = [j.to_public_dict() for j in SNS_EXPORT_MANAGER.list_jobs()]
+    jobs.sort(key=lambda x: int(x.get("createdAt") or 0), reverse=True)
+    return {"status": "success", "jobs": jobs}
+
+
+@router.get("/api/sns/exports/{export_id}", summary="获取导出任务状态")
+async def get_sns_export(export_id: str):
+    job = SNS_EXPORT_MANAGER.get_job(str(export_id or "").strip())
+    if not job:
+        raise HTTPException(status_code=404, detail="Export not found.")
+    return {"status": "success", "job": job.to_public_dict()}
+
+
+@router.get("/api/sns/exports/{export_id}/download", summary="下载导出 zip")
+async def download_sns_export(export_id: str):
+    job = SNS_EXPORT_MANAGER.get_job(str(export_id or "").strip())
+    if not job:
+        raise HTTPException(status_code=404, detail="Export not found.")
+    if not job.zip_path or (not job.zip_path.exists()):
+        raise HTTPException(status_code=409, detail="Export not ready.")
+    return FileResponse(
+        str(job.zip_path),
+        media_type="application/zip",
+        filename=job.zip_path.name,
+    )
+
+
+@router.get("/api/sns/exports/{export_id}/events", summary="导出任务进度 SSE")
+async def stream_sns_export_events(export_id: str, request: Request):
+    export_id = str(export_id or "").strip()
+    job0 = SNS_EXPORT_MANAGER.get_job(export_id)
+    if not job0:
+        raise HTTPException(status_code=404, detail="Export not found.")
+
+    async def gen():
+        last_payload = ""
+        last_heartbeat = 0.0
+
+        while True:
+            if await request.is_disconnected():
+                break
+
+            job = SNS_EXPORT_MANAGER.get_job(export_id)
+            if not job:
+                yield "event: error\ndata: " + json.dumps({"error": "Export not found."}, ensure_ascii=False) + "\n\n"
+                break
+
+            payload = json.dumps(job.to_public_dict(), ensure_ascii=False)
+            if payload != last_payload:
+                last_payload = payload
+                yield f"data: {payload}\n\n"
+
+            now = time.time()
+            if now - last_heartbeat > 15:
+                last_heartbeat = now
+                yield ": ping\n\n"
+
+            if job.status in {"done", "error", "cancelled"}:
+                break
+
+            await asyncio.sleep(0.6)
+
+    headers = {"Cache-Control": "no-cache", "X-Accel-Buffering": "no"}
+    return StreamingResponse(gen(), media_type="text/event-stream", headers=headers)
+
+
+@router.delete("/api/sns/exports/{export_id}", summary="取消导出任务")
+async def cancel_sns_export(export_id: str):
+    ok = SNS_EXPORT_MANAGER.cancel_job(str(export_id or "").strip())
+    if not ok:
+        raise HTTPException(status_code=404, detail="Export not found.")
+    return {"status": "success"}
+
@@ -0,0 +1,274 @@
+"""SNS (Moments) realtime -> decrypted sqlite incremental sync.
+
+Why:
+- We can read the latest Moments via WCDB realtime, but the decrypted snapshot (`output/databases/{account}/sns.db`)
+  can lag behind or miss data (e.g. you viewed it when it was visible, then it became "only last 3 days").
+- For export/offline browsing, we want to keep a local append-only cache of Moments that were visible at some point.
+
+This module runs a lightweight background poller that watches db_storage/sns*.db mtime changes and triggers a cheap
+incremental sync of the latest N Moments into the decrypted snapshot.
+"""
+
+from __future__ import annotations
+
+import os
+import threading
+import time
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any, Optional
+
+from fastapi import HTTPException
+
+from .chat_helpers import _list_decrypted_accounts, _resolve_account_dir
+from .logging_config import get_logger
+from .wcdb_realtime import WCDB_REALTIME
+
+logger = get_logger(__name__)
+
+
+def _env_bool(name: str, default: bool) -> bool:
+    raw = str(os.environ.get(name, "") or "").strip().lower()
+    if not raw:
+        return default
+    return raw not in {"0", "false", "no", "off"}
+
+
+def _env_int(name: str, default: int, *, min_v: int, max_v: int) -> int:
+    raw = str(os.environ.get(name, "") or "").strip()
+    try:
+        v = int(raw)
+    except Exception:
+        v = int(default)
+    if v < min_v:
+        v = min_v
+    if v > max_v:
+        v = max_v
+    return v
+
+
+def _mtime_ns(path: Path) -> int:
+    try:
+        st = path.stat()
+        m_ns = int(getattr(st, "st_mtime_ns", 0) or 0)
+        if m_ns <= 0:
+            m_ns = int(float(getattr(st, "st_mtime", 0.0) or 0.0) * 1_000_000_000)
+        return int(m_ns)
+    except Exception:
+        return 0
+
+
+def _scan_sns_db_mtime_ns(db_storage_dir: Path) -> int:
+    """Best-effort "latest mtime" signal for sns.db buckets."""
+    base = Path(db_storage_dir)
+    candidates: list[Path] = [
+        base / "sns" / "sns.db",
+        base / "sns" / "sns.db-wal",
+        base / "sns" / "sns.db-shm",
+        base / "sns.db",
+        base / "sns.db-wal",
+        base / "sns.db-shm",
+    ]
+    max_ns = 0
+    for p in candidates:
+        v = _mtime_ns(p)
+        if v > max_ns:
+            max_ns = v
+    return int(max_ns)
+
+
+@dataclass
+class _AccountState:
+    last_mtime_ns: int = 0
+    due_at: float = 0.0
+    last_sync_end_at: float = 0.0
+    thread: Optional[threading.Thread] = None
+
+
+class SnsRealtimeAutoSyncService:
+    def __init__(self) -> None:
+        self._enabled = _env_bool("WECHAT_TOOL_SNS_AUTOSYNC", True)
+        self._interval_ms = _env_int("WECHAT_TOOL_SNS_AUTOSYNC_INTERVAL_MS", 2000, min_v=500, max_v=60_000)
+        self._debounce_ms = _env_int("WECHAT_TOOL_SNS_AUTOSYNC_DEBOUNCE_MS", 800, min_v=0, max_v=60_000)
+        self._min_sync_interval_ms = _env_int(
+            "WECHAT_TOOL_SNS_AUTOSYNC_MIN_SYNC_INTERVAL_MS", 5000, min_v=0, max_v=300_000
+        )
+        self._workers = _env_int("WECHAT_TOOL_SNS_AUTOSYNC_WORKERS", 1, min_v=1, max_v=4)
+        self._max_scan = _env_int("WECHAT_TOOL_SNS_AUTOSYNC_MAX_SCAN", 200, min_v=20, max_v=2000)
+
+        self._mu = threading.Lock()
+        self._states: dict[str, _AccountState] = {}
+        self._stop = threading.Event()
+        self._thread: Optional[threading.Thread] = None
+
+    def start(self) -> None:
+        if not self._enabled:
+            logger.info("[sns-autosync] disabled by env WECHAT_TOOL_SNS_AUTOSYNC=0")
+            return
+        with self._mu:
+            if self._thread is not None and self._thread.is_alive():
+                return
+            self._stop.clear()
+            th = threading.Thread(target=self._run, name="sns-realtime-autosync", daemon=True)
+            self._thread = th
+            th.start()
+        logger.info(
+            "[sns-autosync] started interval_ms=%s debounce_ms=%s min_sync_interval_ms=%s max_scan=%s workers=%s",
+            int(self._interval_ms),
+            int(self._debounce_ms),
+            int(self._min_sync_interval_ms),
+            int(self._max_scan),
+            int(self._workers),
+        )
+
+    def stop(self) -> None:
+        self._stop.set()
+        with self._mu:
+            self._thread = None
+
+    def _run(self) -> None:
+        while not self._stop.is_set():
+            tick_t0 = time.perf_counter()
+            try:
+                self._tick()
+            except Exception:
+                logger.exception("[sns-autosync] tick failed")
+
+            elapsed_ms = (time.perf_counter() - tick_t0) * 1000.0
+            sleep_ms = max(200.0, float(self._interval_ms) - elapsed_ms)
+            self._stop.wait(timeout=sleep_ms / 1000.0)
+
+    def _tick(self) -> None:
+        accounts = _list_decrypted_accounts()
+        now = time.time()
+        if not accounts:
+            return
+
+        for acc in accounts:
+            if self._stop.is_set():
+                break
+            try:
+                account_dir = _resolve_account_dir(acc)
+            except HTTPException:
+                continue
+            except Exception:
+                continue
+
+            info = WCDB_REALTIME.get_status(account_dir)
+            available = bool(info.get("dll_present") and info.get("key_present") and info.get("db_storage_dir"))
+            if not available:
+                continue
+
+            db_storage_dir = Path(str(info.get("db_storage_dir") or "").strip())
+            if not db_storage_dir.exists() or not db_storage_dir.is_dir():
+                continue
+
+            mtime_ns = _scan_sns_db_mtime_ns(db_storage_dir)
+            with self._mu:
+                st = self._states.setdefault(acc, _AccountState())
+                if mtime_ns and mtime_ns != st.last_mtime_ns:
+                    st.last_mtime_ns = int(mtime_ns)
+                    st.due_at = now + (float(self._debounce_ms) / 1000.0)
+
+        # Schedule daemon threads.
+        to_start: list[threading.Thread] = []
+        with self._mu:
+            keep = set(accounts)
+            for acc in list(self._states.keys()):
+                if acc not in keep:
+                    self._states.pop(acc, None)
+
+            running = 0
+            for st in self._states.values():
+                th = st.thread
+                if th is not None and th.is_alive():
+                    running += 1
+                elif th is not None and (not th.is_alive()):
+                    st.thread = None
+
+            for acc, st in self._states.items():
+                if running >= int(self._workers):
+                    break
+                if st.due_at <= 0 or st.due_at > now:
+                    continue
+                if st.thread is not None and st.thread.is_alive():
+                    continue
+
+                since = now - float(st.last_sync_end_at or 0.0)
+                min_interval = float(self._min_sync_interval_ms) / 1000.0
+                if min_interval > 0 and since < min_interval:
+                    st.due_at = now + (min_interval - since)
+                    continue
+
+                st.due_at = 0.0
+                th = threading.Thread(
+                    target=self._sync_account_runner,
+                    args=(acc,),
+                    name=f"sns-autosync-{acc}",
+                    daemon=True,
+                )
+                st.thread = th
+                to_start.append(th)
+                running += 1
+
+        for th in to_start:
+            if self._stop.is_set():
+                break
+            try:
+                th.start()
+            except Exception:
+                with self._mu:
+                    for acc, st in self._states.items():
+                        if st.thread is th:
+                            st.thread = None
+                            break
+
+    def _sync_account_runner(self, account: str) -> None:
+        account = str(account or "").strip()
+        try:
+            if self._stop.is_set() or (not account):
+                return
+            res = self._sync_account(account)
+            upserted = int((res or {}).get("upserted") or 0)
+            logger.info("[sns-autosync] sync done account=%s upserted=%s", account, upserted)
+        except Exception:
+            logger.exception("[sns-autosync] sync failed account=%s", account)
+        finally:
+            with self._mu:
+                st = self._states.get(account)
+                if st is not None:
+                    st.thread = None
+                    st.last_sync_end_at = time.time()
+
+    def _sync_account(self, account: str) -> dict[str, Any]:
+        account = str(account or "").strip()
+        if not account:
+            return {"status": "skipped", "reason": "missing account"}
+
+        try:
+            account_dir = _resolve_account_dir(account)
+        except Exception as e:
+            return {"status": "skipped", "reason": f"resolve account failed: {e}"}
+
+        info = WCDB_REALTIME.get_status(account_dir)
+        available = bool(info.get("dll_present") and info.get("key_present") and info.get("db_storage_dir"))
+        if not available:
+            return {"status": "skipped", "reason": "realtime not available"}
+
+        # Import lazily to avoid startup import ordering issues.
+        from .routers.sns import sync_sns_realtime_timeline_latest
+
+        try:
+            return sync_sns_realtime_timeline_latest(
+                account=account,
+                max_scan=int(self._max_scan),
+                force=0,
+            )
+        except HTTPException as e:
+            return {"status": "error", "error": str(e.detail or "")}
+        except Exception as e:
+            return {"status": "error", "error": str(e)}
+
+
+SNS_REALTIME_AUTOSYNC = SnsRealtimeAutoSyncService()
+
@@ -1,6 +1,8 @@
 import ctypes
+import binascii
 import json
 import os
+import re
 import sys
 import threading
 import time
@@ -20,7 +22,51 @@ class WCDBRealtimeError(RuntimeError):


 _NATIVE_DIR = Path(__file__).resolve().parent / "native"
-_WCDB_API_DLL = _NATIVE_DIR / "wcdb_api.dll"
+_DEFAULT_WCDB_API_DLL = _NATIVE_DIR / "wcdb_api.dll"
+_WCDB_API_DLL_SELECTED: Optional[Path] = None
+
+
+def _candidate_wcdb_api_dll_paths() -> list[Path]:
+    """Return possible locations for wcdb_api.dll (prefer WeFlow's newer build when present)."""
+    cands: list[Path] = []
+
+    env = str(os.environ.get("WECHAT_TOOL_WCDB_API_DLL_PATH", "") or "").strip()
+    if env:
+        cands.append(Path(env))
+
+    # Repo checkout convenience: reuse bundled WeFlow / echotrace DLLs when available.
+    try:
+        repo_root = Path(__file__).resolve().parents[2]
+    except Exception:
+        repo_root = Path.cwd()
+
+    for p in [
+        repo_root / "WeFlow" / "resources" / "wcdb_api.dll",
+        repo_root / "echotrace" / "assets" / "dll" / "wcdb_api.dll",
+        _DEFAULT_WCDB_API_DLL,
+    ]:
+        if p not in cands:
+            cands.append(p)
+
+    return cands
+
+
+def _resolve_wcdb_api_dll_path() -> Path:
+    global _WCDB_API_DLL_SELECTED
+    if _WCDB_API_DLL_SELECTED is not None:
+        return _WCDB_API_DLL_SELECTED
+
+    for p in _candidate_wcdb_api_dll_paths():
+        try:
+            if p.exists() and p.is_file():
+                _WCDB_API_DLL_SELECTED = p
+                return p
+        except Exception:
+            continue
+
+    # Fall back to the default path even if it doesn't exist; caller will raise a clear error.
+    _WCDB_API_DLL_SELECTED = _DEFAULT_WCDB_API_DLL
+    return _WCDB_API_DLL_SELECTED

 _lib_lock = threading.Lock()
 _lib: Optional[ctypes.CDLL] = None
@@ -40,16 +86,18 @@ def _load_wcdb_lib() -> ctypes.CDLL:
        if not _is_windows():
            raise WCDBRealtimeError("WCDB realtime mode is only supported on Windows.")

-        if not _WCDB_API_DLL.exists():
-            raise WCDBRealtimeError(f"Missing wcdb_api.dll at: {_WCDB_API_DLL}")
+        wcdb_api_dll = _resolve_wcdb_api_dll_path()
+        if not wcdb_api_dll.exists():
+            raise WCDBRealtimeError(f"Missing wcdb_api.dll at: {wcdb_api_dll}")

        # Ensure dependent DLLs (e.g. WCDB.dll) can be found.
        try:
-            os.add_dll_directory(str(_NATIVE_DIR))
+            os.add_dll_directory(str(wcdb_api_dll.parent))
        except Exception:
            pass

-        lib = ctypes.CDLL(str(_WCDB_API_DLL))
+        lib = ctypes.CDLL(str(wcdb_api_dll))
+        logger.info("[wcdb] using wcdb_api.dll: %s", wcdb_api_dll)

        # Signatures
        lib.wcdb_init.argtypes = []
@@ -144,6 +192,19 @@ def _load_wcdb_lib() -> ctypes.CDLL:
            # Older wcdb_api.dll may not expose this export.
            pass

+        # Optional (newer DLLs): wcdb_decrypt_sns_image(encrypted_data, len, key, out_hex)
+        # WeFlow uses this to decrypt Moments CDN images.
+        try:
+            lib.wcdb_decrypt_sns_image.argtypes = [
+                ctypes.c_void_p,
+                ctypes.c_int32,
+                ctypes.c_char_p,
+                ctypes.POINTER(ctypes.c_void_p),
+            ]
+            lib.wcdb_decrypt_sns_image.restype = ctypes.c_int32
+        except Exception:
+            pass
+
        lib.wcdb_get_logs.argtypes = [ctypes.POINTER(ctypes.c_char_p)]
        lib.wcdb_get_logs.restype = ctypes.c_int

@@ -488,6 +549,63 @@ def get_sns_timeline(
    return []


+def decrypt_sns_image(encrypted_data: bytes, key: str) -> bytes:
+    """Decrypt Moments CDN image bytes using WCDB DLL (WeFlow compatible).
+
+    Notes:
+    - Requires a newer wcdb_api.dll export: wcdb_decrypt_sns_image.
+    - On failure, returns the original encrypted_data (best-effort behavior like WeFlow).
+    """
+    _ensure_initialized()
+    lib = _load_wcdb_lib()
+    fn = getattr(lib, "wcdb_decrypt_sns_image", None)
+    if not fn:
+        raise WCDBRealtimeError("Current wcdb_api.dll does not support sns image decryption.")
+
+    raw = bytes(encrypted_data or b"")
+    if not raw:
+        return b""
+
+    k = str(key or "").strip()
+    if not k:
+        return raw
+
+    out_ptr = ctypes.c_void_p()
+    buf = ctypes.create_string_buffer(raw, len(raw))
+    rc = 0
+    try:
+        rc = int(
+            fn(
+                ctypes.cast(buf, ctypes.c_void_p),
+                ctypes.c_int32(len(raw)),
+                k.encode("utf-8"),
+                ctypes.byref(out_ptr),
+            )
+        )
+
+        if rc != 0 or not out_ptr.value:
+            return raw
+
+        hex_bytes = ctypes.cast(out_ptr, ctypes.c_char_p).value or b""
+        if not hex_bytes:
+            return raw
+
+        # Defensive: keep only hex chars (some builds may include whitespace).
+        hex_clean = re.sub(rb"[^0-9a-fA-F]", b"", hex_bytes)
+        if not hex_clean:
+            return raw
+        try:
+            return binascii.unhexlify(hex_clean)
+        except Exception:
+            return raw
+    finally:
+        try:
+            if out_ptr.value:
+                lib.wcdb_free_string(ctypes.cast(out_ptr, ctypes.c_char_p))
+        except Exception:
+            pass
+
+
 def shutdown() -> None:
    global _initialized
    lib = _load_wcdb_lib()
@@ -573,11 +691,16 @@ class WCDBRealtimeManager:
        except Exception as e:
            err = str(e)

-        dll_ok = _WCDB_API_DLL.exists()
+        dll_path = _resolve_wcdb_api_dll_path()
+        try:
+            dll_ok = bool(dll_path.exists())
+        except Exception:
+            dll_ok = False
        connected = self.is_connected(account)
        return {
            "account": account,
            "dll_present": bool(dll_ok),
+            "wcdb_api_dll": str(dll_path),
            "key_present": bool(key_ok),
            "db_storage_dir": str(db_storage_dir) if db_storage_dir else "",
            "session_db_path": str(session_db_path) if session_db_path else "",
@@ -16,15 +16,16 @@ from .cards.card_00_global_overview import build_card_00_global_overview
 from .cards.card_01_cyber_schedule import WeekdayHourHeatmap, build_card_01_cyber_schedule, compute_weekday_hour_heatmap
 from .cards.card_02_message_chars import build_card_02_message_chars
 from .cards.card_03_reply_speed import build_card_03_reply_speed
+from .cards.card_04_emoji_universe import build_card_04_emoji_universe

 logger = get_logger(__name__)


 # We use this number to version the cache filename so adding more cards won't accidentally serve
 # an older partial cache.
-_IMPLEMENTED_UPTO_ID = 3
+_IMPLEMENTED_UPTO_ID = 4
 # Bump this when we change card payloads/ordering while keeping the same implemented_upto.
-_CACHE_VERSION = 9
+_CACHE_VERSION = 15


 # "Manifest" is used by the frontend to render the deck quickly, then lazily fetch each card.
@@ -58,6 +59,13 @@ _WRAPPED_CARD_MANIFEST: tuple[dict[str, Any], ...] = (
        "category": "B",
        "kind": "chat/reply_speed",
    },
+    {
+        "id": 4,
+        "title": "这一年，你的表情包里藏了多少心情？",
+        "scope": "global",
+        "category": "B",
+        "kind": "emoji/annual_universe",
+    },
 )
 _WRAPPED_CARD_ID_SET = {int(c["id"]) for c in _WRAPPED_CARD_MANIFEST}

@@ -274,7 +282,7 @@ def build_wrapped_annual_response(
 ) -> dict[str, Any]:
    """Build annual wrapped response for the given account/year.

-    For now we implement cards up to id=3 (plus a meta overview card id=0).
+    For now we implement cards up to id=4 (plus a meta overview card id=0).
    """

    account_dir = _resolve_account_dir(account)
@@ -317,6 +325,8 @@ def build_wrapped_annual_response(
    cards.append(build_card_02_message_chars(account_dir=account_dir, year=y))
    # Page 5: reply speed / best chat buddy.
    cards.append(build_card_03_reply_speed(account_dir=account_dir, year=y))
+    # Page 6: annual emoji universe / meme almanac.
+    cards.append(build_card_04_emoji_universe(account_dir=account_dir, year=y))

    obj: dict[str, Any] = {
        "account": account_dir.name,
@@ -508,6 +518,8 @@ def build_wrapped_annual_card(
            card = build_card_02_message_chars(account_dir=account_dir, year=y)
        elif cid == 3:
            card = build_card_03_reply_speed(account_dir=account_dir, year=y)
+        elif cid == 4:
+            card = build_card_04_emoji_universe(account_dir=account_dir, year=y)
        else:
            # Should be unreachable due to _WRAPPED_CARD_ID_SET check.
            raise ValueError(f"Unknown Wrapped card id: {cid}")
@@ -0,0 +1,50 @@
+import sys
+import unittest
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+from wechat_decrypt_tool.chat_helpers import _parse_app_message
+
+
+class TestChatAppMessageType4PatMsgRegression(unittest.TestCase):
+    def test_type4_link_with_patmsg_metadata_is_not_misclassified_as_pat(self):
+        raw_text = (
+            "<msg>"
+            '<appmsg appid="wxcb8d4298c6a09bcb" sdkver="0">'
+            "<title>【中配】抽象可能让你的代码变差 - CodeAesthetic</title>"
+            "<des>UP主：黑纹白斑马</des>"
+            "<type>4</type>"
+            "<url>https://b23.tv/au68guF</url>"
+            "<appname>哔哩哔哩</appname>"
+            "<appattach><cdnthumburl>3057020100044b30</cdnthumburl></appattach>"
+            "<patMsg><chatUser /></patMsg>"
+            "</appmsg>"
+            "</msg>"
+        )
+
+        parsed = _parse_app_message(raw_text)
+        self.assertEqual(parsed.get("renderType"), "link")
+        self.assertEqual(parsed.get("url"), "https://b23.tv/au68guF")
+        self.assertEqual(parsed.get("title"), "【中配】抽象可能让你的代码变差 - CodeAesthetic")
+        self.assertEqual(parsed.get("from"), "哔哩哔哩")
+        self.assertNotEqual(parsed.get("content"), "[拍一拍]")
+
+    def test_type62_is_still_pat(self):
+        raw_text = '<msg><appmsg><title>"A" 拍了拍 "B"</title><type>62</type></appmsg></msg>'
+        parsed = _parse_app_message(raw_text)
+        self.assertEqual(parsed.get("renderType"), "system")
+        self.assertEqual(parsed.get("content"), "[拍一拍]")
+
+    def test_sysmsg_type_patmsg_attr_is_still_pat(self):
+        raw_text = '<sysmsg type="patmsg"><foo>bar</foo></sysmsg>'
+        parsed = _parse_app_message(raw_text)
+        self.assertEqual(parsed.get("renderType"), "system")
+        self.assertEqual(parsed.get("content"), "[拍一拍]")
+
+
+if __name__ == "__main__":
+    unittest.main()
+
@@ -0,0 +1,218 @@
+import os
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestChatExportChatHistoryModal(unittest.TestCase):
+    _MD5 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "测试好友", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            record_item = (
+                "<recorditem>"
+                "<datalist>"
+                "<dataitem>"
+                "<datatype>2</datatype>"
+                f"<fullmd5>{self._MD5}</fullmd5>"
+                "</dataitem>"
+                "</datalist>"
+                "</recorditem>"
+            )
+            chat_history_xml = (
+                "<msg><appmsg>"
+                "<type>19</type>"
+                "<title>聊天记录</title>"
+                "<des>记录预览</des>"
+                f"<recorditem><![CDATA[{record_item}]]></recorditem>"
+                "</appmsg></msg>"
+            )
+
+            conn.execute(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (1, 1001, 49, 1, 2, 1735689601, chat_history_xml, None),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_media_files(self, account_dir: Path) -> None:
+        resource_root = account_dir / "resource"
+        (resource_root / "aa").mkdir(parents=True, exist_ok=True)
+        (resource_root / "aa" / f"{self._MD5}.jpg").write_bytes(b"\xff\xd8\xff\xd9")
+
+    def _prepare_account(self, root: Path, *, account: str, username: str) -> Path:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        self._seed_message_db(account_dir / "message_0.db", account=account, username=username)
+        self._seed_media_files(account_dir)
+        return account_dir
+
+    def _create_job(self, manager, *, account: str, username: str):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=True,
+            media_kinds=["image"],
+            message_types=["chatHistory", "image"],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=False,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        for _ in range(200):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_chat_history_modal_has_media_index_and_record_item(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            self._prepare_account(root, account=account, username=username)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+                job = self._create_job(svc.CHAT_EXPORT_MANAGER, account=account, username=username)
+                self.assertEqual(job.status, "done", msg=job.error)
+
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+                    self.assertIn(f"media/images/{self._MD5}.jpg", names)
+
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+                    html_text = zf.read(html_path).decode("utf-8")
+                    self.assertIn('id="chatHistoryModal"', html_text)
+                    self.assertIn('data-wce-chat-history="1"', html_text)
+                    self.assertIn('data-record-item-b64="', html_text)
+                    self.assertIn('id="wceMediaIndex"', html_text)
+                    self.assertIn(self._MD5, html_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
@@ -0,0 +1,353 @@
+import os
+import json
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestChatExportHtmlFormat(unittest.TestCase):
+    _FILE_MD5 = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
+    _VOICE_SERVER_ID = 2001
+
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "测试好友", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            image_xml = '<msg><img md5="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" cdnthumburl="img_file_id_1" /></msg>'
+            voice_xml = '<msg><voicemsg voicelength="3000" /></msg>'
+            file_md5 = self._FILE_MD5
+            file_xml = (
+                "<msg><appmsg>"
+                "<type>6</type>"
+                "<title>demo.pdf</title>"
+                "<totallen>2048</totallen>"
+                f"<md5>{file_md5}</md5>"
+                "</appmsg></msg>"
+            )
+            link_xml = (
+                "<msg><appmsg>"
+                "<type>5</type>"
+                "<title>示例链接</title>"
+                "<des>这是描述</des>"
+                "<url>https://example.com/</url>"
+                "<thumburl>https://example.com/thumb.jpg</thumburl>"
+                "<sourceusername>gh_test</sourceusername>"
+                "<sourcedisplayname>测试公众号</sourcedisplayname>"
+                "</appmsg></msg>"
+            )
+            chat_history_xml = (
+                "<msg><appmsg>"
+                "<type>19</type>"
+                "<title>聊天记录</title>"
+                "<des>记录预览</des>"
+                "<recorditem><desc>张三: hi\n李四: ok</desc></recorditem>"
+                "</appmsg></msg>"
+            )
+            transfer_xml = (
+                "<msg><appmsg>"
+                "<type>2000</type>"
+                "<title>微信转账</title>"
+                "<wcpayinfo>"
+                "<pay_memo>转账备注</pay_memo>"
+                "<feedesc>￥1.23</feedesc>"
+                "<paysubtype>3</paysubtype>"
+                "<transferid>transfer_123</transferid>"
+                "</wcpayinfo>"
+                "</appmsg></msg>"
+            )
+            red_packet_xml = (
+                "<msg><appmsg>"
+                "<type>2001</type>"
+                "<title>红包</title>"
+                "<wcpayinfo>"
+                "<sendertitle>恭喜发财，大吉大利</sendertitle>"
+                "<senderdes>微信红包</senderdes>"
+                "</wcpayinfo>"
+                "</appmsg></msg>"
+            )
+            voip_xml = (
+                "<msg><VoIPBubbleMsg>"
+                "<room_type>1</room_type>"
+                "<msg>语音通话</msg>"
+                "</VoIPBubbleMsg></msg>"
+            )
+            quote_voice_xml = (
+                "<msg><appmsg>"
+                "<type>57</type>"
+                "<title>回复语音</title>"
+                "<refermsg>"
+                "<type>34</type>"
+                f"<svrid>{self._VOICE_SERVER_ID}</svrid>"
+                "<fromusr>wxid_friend</fromusr>"
+                "<displayname>测试好友</displayname>"
+                "<content>wxid_friend:3000:1:</content>"
+                "</refermsg>"
+                "</appmsg></msg>"
+            )
+            rows = [
+                (1, 1001, 3, 1, 2, 1735689601, image_xml, None),
+                (2, 1002, 1, 2, 2, 1735689602, "普通文本消息[微笑]", None),
+                (3, 1003, 49, 3, 1, 1735689603, transfer_xml, None),
+                (4, 1004, 49, 4, 2, 1735689604, red_packet_xml, None),
+                (5, 1005, 49, 5, 1, 1735689605, file_xml, None),
+                (6, 1006, 49, 6, 2, 1735689606, link_xml, None),
+                (7, 1007, 49, 7, 2, 1735689607, chat_history_xml, None),
+                (8, 1008, 50, 8, 2, 1735689608, voip_xml, None),
+                (9, self._VOICE_SERVER_ID, 34, 9, 1, 1735689609, voice_xml, None),
+                (10, 1010, 49, 10, 1, 1735689610, quote_voice_xml, None),
+            ]
+            conn.executemany(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                rows,
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_media_files(self, account_dir: Path) -> None:
+        resource_root = account_dir / "resource"
+        (resource_root / "aa").mkdir(parents=True, exist_ok=True)
+        (resource_root / "aa" / "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.jpg").write_bytes(b"\xff\xd8\xff\xd9")
+        (resource_root / "bb").mkdir(parents=True, exist_ok=True)
+        (resource_root / "bb" / f"{self._FILE_MD5}.dat").write_bytes(b"dummy")
+
+        conn = sqlite3.connect(str(account_dir / "media_0.db"))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE VoiceInfo (
+                    svr_id INTEGER,
+                    create_time INTEGER,
+                    voice_data BLOB
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO VoiceInfo VALUES (?, ?, ?)",
+                (self._VOICE_SERVER_ID, 1735689609, b"SILK_VOICE_DATA"),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _prepare_account(self, root: Path, *, account: str, username: str) -> Path:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        self._seed_message_db(account_dir / "message_0.db", account=account, username=username)
+        self._seed_media_files(account_dir)
+        return account_dir
+
+    def _create_job(self, manager, *, account: str, username: str):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=True,
+            media_kinds=["image", "emoji", "video", "video_thumb", "voice", "file"],
+            message_types=[],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=False,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        for _ in range(200):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_html_export_contains_index_and_conversation_page(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            self._prepare_account(root, account=account, username=username)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+                job = self._create_job(svc.CHAT_EXPORT_MANAGER, account=account, username=username)
+                self.assertEqual(job.status, "done", msg=job.error)
+
+                self.assertTrue(job.zip_path and job.zip_path.exists())
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+
+                    self.assertIn("index.html", names)
+                    self.assertIn("assets/wechat-chat-export.css", names)
+                    self.assertIn("assets/wechat-chat-export.js", names)
+
+                    manifest = json.loads(zf.read("manifest.json").decode("utf-8"))
+                    self.assertEqual(manifest.get("format"), "html")
+
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+
+                    html_text = zf.read(html_path).decode("utf-8")
+                    self.assertIn('data-wce-rail-avatar="1"', html_text)
+                    self.assertIn('data-wce-session-list="1"', html_text)
+                    self.assertIn('id="sessionSearchInput"', html_text)
+                    self.assertIn('data-wce-time-divider="1"', html_text)
+                    self.assertIn('id="messageTypeFilter"', html_text)
+                    self.assertIn('value="chatHistory"', html_text)
+                    self.assertIn('id="chatHistoryModal"', html_text)
+                    self.assertIn('data-wce-chat-history="1"', html_text)
+                    self.assertIn('data-record-item-b64="', html_text)
+                    self.assertIn('id="wceMediaIndex"', html_text)
+                    self.assertIn('data-wce-quote-voice-btn="1"', html_text)
+                    self.assertNotIn('title="刷新消息"', html_text)
+                    self.assertNotIn('title="导出聊天记录"', html_text)
+                    self.assertNotIn("搜索聊天记录", html_text)
+                    self.assertNotIn("朋友圈", html_text)
+                    self.assertNotIn("年度总结", html_text)
+                    self.assertNotIn("设置", html_text)
+                    self.assertNotIn("隐私模式", html_text)
+
+                    self.assertTrue(any(n.startswith("media/images/") for n in names))
+                    self.assertIn("../../media/images/", html_text)
+
+                    self.assertIn("wechat-transfer-card", html_text)
+                    self.assertIn("wechat-redpacket-card", html_text)
+                    self.assertIn("wechat-chat-history-card", html_text)
+                    self.assertIn("wechat-voip-bubble", html_text)
+                    self.assertIn("wechat-link-card", html_text)
+                    self.assertIn("wechat-file-card", html_text)
+                    self.assertIn("wechat-voice-wrapper", html_text)
+
+                    css_text = zf.read("assets/wechat-chat-export.css").decode("utf-8", errors="ignore")
+                    self.assertIn("wechat-transfer-card", css_text)
+                    self.assertNotIn("wechat-transfer-card[data-v-", css_text)
+
+                    js_text = zf.read("assets/wechat-chat-export.js").decode("utf-8", errors="ignore")
+                    self.assertIn("wechat-voice-bubble", js_text)
+                    self.assertIn("voice-playing", js_text)
+                    self.assertIn("data-wce-quote-voice-btn", js_text)
+
+                    self.assertIn("assets/images/wechat/wechat-trans-icon1.png", names)
+                    self.assertIn("assets/images/wechat/zip.png", names)
+                    self.assertIn("assets/images/wechat/WeChat-Icon-Logo.wine.svg", names)
+                    self.assertTrue(any(n.startswith("fonts/") and n.endswith(".woff2") for n in names))
+                    self.assertIn("wxemoji/Expression_1@2x.png", names)
+                    self.assertIn("../../wxemoji/Expression_1@2x.png", html_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
@@ -0,0 +1,221 @@
+import os
+import json
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestChatExportHtmlPaging(unittest.TestCase):
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "Me", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "Friend", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str, total: int) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            # Generate lots of plain text messages with unique markers.
+            rows = []
+            base_ts = 1735689600
+            for i in range(1, total + 1):
+                marker = f"MSG{i:04d}"
+                real_sender_id = 1 if (i % 2 == 0) else 2
+                rows.append((i, 100000 + i, 1, i, real_sender_id, base_ts + i, marker, None))
+
+            conn.executemany(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) "
+                "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                rows,
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _prepare_account(self, root: Path, *, account: str, username: str, total: int) -> Path:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        self._seed_message_db(account_dir / "message_0.db", account=account, username=username, total=total)
+        return account_dir
+
+    def _create_job(self, manager, *, account: str, username: str, html_page_size: int):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=False,
+            media_kinds=[],
+            message_types=[],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=False,
+            html_page_size=html_page_size,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        # Export is async (thread). Allow enough time for a few thousand messages + zip writes.
+        for _ in range(600):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_html_export_paging_inlines_latest_page_only(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+
+            total_messages = 2300
+            page_size = 1000
+            self._prepare_account(root, account=account, username=username, total=total_messages)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+                job = self._create_job(
+                    svc.CHAT_EXPORT_MANAGER,
+                    account=account,
+                    username=username,
+                    html_page_size=page_size,
+                )
+                self.assertEqual(job.status, "done", msg=job.error)
+
+                self.assertTrue(job.zip_path and job.zip_path.exists())
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path, msg="missing messages.html")
+                    html_text = zf.read(html_path).decode("utf-8", errors="ignore")
+
+                    # Paging UI + meta should exist for multi-page exports.
+                    self.assertIn('id="wcePageMeta"', html_text)
+                    self.assertIn('id="wcePager"', html_text)
+                    self.assertIn('id="wceMessageList"', html_text)
+                    self.assertIn('id="wceLoadPrevBtn"', html_text)
+
+                    # Latest page is inlined; earliest page should not be present in messages.html.
+                    self.assertIn("MSG2300", html_text)
+                    self.assertNotIn("MSG0001", html_text)
+
+                    conv_dir = html_path.rsplit("/", 1)[0]
+                    page1_js = f"{conv_dir}/pages/page-0001.js"
+                    self.assertIn(page1_js, names)
+                    page1_text = zf.read(page1_js).decode("utf-8", errors="ignore")
+                    self.assertIn("MSG0001", page1_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
@@ -0,0 +1,199 @@
+import os
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestChatExportImageMd5CandidateFallback(unittest.TestCase):
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "测试好友", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            good_md5 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+            bad_md5 = "ffffffffffffffffffffffffffffffff"
+            image_xml = f'<msg><img md5="{bad_md5}" hdmd5="{good_md5}" cdnthumburl="img_file_id_1" /></msg>'
+
+            conn.execute(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (1, 1001, 3, 1, 2, 1735689601, image_xml, None),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_decrypted_resource(self, account_dir: Path) -> None:
+        resource_root = account_dir / "resource"
+        (resource_root / "aa").mkdir(parents=True, exist_ok=True)
+        (resource_root / "aa" / "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.jpg").write_bytes(b"\xff\xd8\xff\xd9")
+
+    def _prepare_account(self, root: Path, *, account: str, username: str) -> Path:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        self._seed_message_db(account_dir / "message_0.db", account=account, username=username)
+        self._seed_decrypted_resource(account_dir)
+        return account_dir
+
+    def _create_job(self, manager, *, account: str, username: str):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=True,
+            media_kinds=["image"],
+            message_types=[],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=False,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        for _ in range(200):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_falls_back_to_secondary_md5_candidate(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            self._prepare_account(root, account=account, username=username)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+                job = self._create_job(svc.CHAT_EXPORT_MANAGER, account=account, username=username)
+                self.assertEqual(job.status, "done", msg=job.error)
+
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+                    self.assertIn("media/images/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.jpg", names)
+                    self.assertFalse(any("ffffffffffffffffffffffffffffffff" in n for n in names if n.startswith("media/images/")))
+
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+                    html_text = zf.read(html_path).decode("utf-8", errors="ignore")
+                    self.assertIn("../../media/images/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.jpg", html_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
+
@@ -0,0 +1,235 @@
+import os
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestChatExportImageMd5PrefersMessageResource(unittest.TestCase):
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_source_info(self, account_dir: Path) -> None:
+        wxid_dir = account_dir / "_wxid_dummy"
+        db_storage_dir = account_dir / "_db_storage_dummy"
+        wxid_dir.mkdir(parents=True, exist_ok=True)
+        db_storage_dir.mkdir(parents=True, exist_ok=True)
+        (account_dir / "_source.json").write_text(
+            '{"wxid_dir": "' + str(wxid_dir).replace("\\", "\\\\") + '", "db_storage_path": "' + str(db_storage_dir).replace("\\", "\\\\") + '"}',
+            encoding="utf-8",
+        )
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "测试好友", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str, bad_md5: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            image_xml = f'<msg><img md5="{bad_md5}" /></msg>'
+            conn.execute(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (1, 1001, 3, 1, 2, 1735689601, image_xml, None),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_resource_db(self, path: Path, *, good_md5: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE MessageResourceInfo (
+                    message_id INTEGER,
+                    message_svr_id INTEGER,
+                    message_local_type INTEGER,
+                    chat_id INTEGER,
+                    message_local_id INTEGER,
+                    message_create_time INTEGER,
+                    packed_info BLOB
+                )
+                """
+            )
+            # packed_info may contain multiple tokens; include a realistic *.dat reference so the extractor prefers it.
+            packed_info = f"{good_md5}_t.dat".encode("ascii")
+            conn.execute(
+                "INSERT INTO MessageResourceInfo VALUES (?, ?, ?, ?, ?, ?, ?)",
+                (1, 1001, 3, 0, 1, 1735689601, packed_info),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_decrypted_resource(self, account_dir: Path, *, good_md5: str) -> None:
+        resource_root = account_dir / "resource"
+        (resource_root / good_md5[:2]).mkdir(parents=True, exist_ok=True)
+        # Minimal JPEG payload (valid SOI/EOI).
+        (resource_root / good_md5[:2] / f"{good_md5}.jpg").write_bytes(b"\xff\xd8\xff\xd9")
+
+    def _prepare_account(self, root: Path, *, account: str, username: str, bad_md5: str, good_md5: str) -> Path:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+        self._seed_source_info(account_dir)
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        self._seed_message_db(account_dir / "message_0.db", account=account, username=username, bad_md5=bad_md5)
+        self._seed_message_resource_db(account_dir / "message_resource.db", good_md5=good_md5)
+        self._seed_decrypted_resource(account_dir, good_md5=good_md5)
+        return account_dir
+
+    def _create_job(self, manager, *, account: str, username: str):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=True,
+            media_kinds=["image"],
+            message_types=["image"],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=False,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        for _ in range(200):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_prefers_message_resource_md5_over_xml_md5(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            bad_md5 = "ffffffffffffffffffffffffffffffff"
+            good_md5 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+            self._prepare_account(root, account=account, username=username, bad_md5=bad_md5, good_md5=good_md5)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+                job = self._create_job(svc.CHAT_EXPORT_MANAGER, account=account, username=username)
+                self.assertEqual(job.status, "done", msg=job.error)
+
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+                    self.assertIn(f"media/images/{good_md5}.jpg", names)
+
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+                    html_text = zf.read(html_path).decode("utf-8", errors="ignore")
+                    self.assertIn(f"../../media/images/{good_md5}.jpg", html_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
+
@@ -198,6 +198,7 @@ class TestChatExportMessageTypesSemantics(unittest.TestCase):
            message_types=message_types,
            output_dir=None,
            allow_process_key_extract=False,
+            download_remote_media=False,
            privacy_mode=privacy_mode,
            file_name=None,
        )
@@ -0,0 +1,304 @@
+import os
+import hashlib
+import sqlite3
+import sys
+import unittest
+import zipfile
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from unittest import mock
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class _FakeResponse:
+    def __init__(self, body: bytes, *, content_type: str) -> None:
+        self.status_code = 200
+        self.headers = {
+            "Content-Type": str(content_type or "").strip(),
+            "Content-Length": str(len(body)),
+        }
+        self._body = body
+
+    def iter_content(self, chunk_size=65536):
+        data = self._body or b""
+        for i in range(0, len(data), int(chunk_size or 65536)):
+            yield data[i : i + int(chunk_size or 65536)]
+
+    def close(self):
+        return None
+
+
+class TestChatExportRemoteThumbOption(unittest.TestCase):
+    def _reload_export_modules(self):
+        import wechat_decrypt_tool.app_paths as app_paths
+        import wechat_decrypt_tool.chat_helpers as chat_helpers
+        import wechat_decrypt_tool.media_helpers as media_helpers
+        import wechat_decrypt_tool.chat_export_service as chat_export_service
+
+        importlib.reload(app_paths)
+        importlib.reload(chat_helpers)
+        importlib.reload(media_helpers)
+        importlib.reload(chat_export_service)
+        return chat_export_service
+
+    def _seed_contact_db(self, path: Path, *, account: str, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (username, "", "测试好友", "", 1, 0, "", ""),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, username: str) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO SessionTable VALUES (?, ?, ?)",
+                (username, 0, 1735689600),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(self, path: Path, *, account: str, username: str) -> tuple[str, str]:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+
+            table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB
+                )
+                """
+            )
+
+            link_thumb = "https://1.1.1.1/thumb.png"
+            quote_thumb = "https://1.1.1.1/quote.png"
+
+            link_xml = (
+                "<msg><appmsg>"
+                "<type>5</type>"
+                "<title>示例链接</title>"
+                "<des>这是描述</des>"
+                "<url>https://example.com/</url>"
+                f"<thumburl>{link_thumb}</thumburl>"
+                "</appmsg></msg>"
+            )
+            quote_xml = (
+                "<msg><appmsg>"
+                "<type>57</type>"
+                "<title>回复</title>"
+                "<refermsg>"
+                "<type>49</type>"
+                "<svrid>8888</svrid>"
+                "<fromusr>wxid_other</fromusr>"
+                "<displayname>对方</displayname>"
+                "<content>"
+                "<msg><appmsg><type>5</type><title>被引用链接</title><url>https://example.com/</url>"
+                f"<thumburl>{quote_thumb}</thumburl>"
+                "</appmsg></msg>"
+                "</content>"
+                "</refermsg>"
+                "</appmsg></msg>"
+            )
+
+            rows = [
+                (1, 1001, 49, 1, 2, 1735689601, link_xml, None),
+                (2, 1002, 49, 2, 2, 1735689602, quote_xml, None),
+            ]
+            conn.executemany(
+                f"INSERT INTO {table_name} (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                rows,
+            )
+            conn.commit()
+            return link_thumb, quote_thumb
+        finally:
+            conn.close()
+
+    def _prepare_account(self, root: Path, *, account: str, username: str) -> tuple[Path, str, str]:
+        account_dir = root / "output" / "databases" / account
+        account_dir.mkdir(parents=True, exist_ok=True)
+
+        self._seed_contact_db(account_dir / "contact.db", account=account, username=username)
+        self._seed_session_db(account_dir / "session.db", username=username)
+        link_thumb, quote_thumb = self._seed_message_db(account_dir / "message_0.db", account=account, username=username)
+        return account_dir, link_thumb, quote_thumb
+
+    def _create_job(self, manager, *, account: str, username: str, download_remote_media: bool):
+        job = manager.create_job(
+            account=account,
+            scope="selected",
+            usernames=[username],
+            export_format="html",
+            start_time=None,
+            end_time=None,
+            include_hidden=False,
+            include_official=False,
+            include_media=True,
+            media_kinds=["image", "emoji", "video", "video_thumb", "voice", "file"],
+            message_types=["link", "quote", "image"],
+            output_dir=None,
+            allow_process_key_extract=False,
+            download_remote_media=download_remote_media,
+            privacy_mode=False,
+            file_name=None,
+        )
+
+        for _ in range(200):
+            latest = manager.get_job(job.export_id)
+            if latest and latest.status in {"done", "error", "cancelled"}:
+                return latest
+            import time as _time
+
+            _time.sleep(0.05)
+        self.fail("export job did not finish in time")
+
+    def test_remote_thumb_disabled_does_not_download(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            _, link_thumb, quote_thumb = self._prepare_account(root, account=account, username=username)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+
+                with mock.patch.object(
+                    svc.requests,
+                    "get",
+                    side_effect=AssertionError("requests.get should not be called when download_remote_media=False"),
+                ) as m_get:
+                    job = self._create_job(
+                        svc.CHAT_EXPORT_MANAGER,
+                        account=account,
+                        username=username,
+                        download_remote_media=False,
+                    )
+                    self.assertEqual(job.status, "done", msg=job.error)
+                    self.assertEqual(m_get.call_count, 0)
+
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+                    html_text = zf.read(html_path).decode("utf-8")
+                    self.assertIn(f'src="{link_thumb}"', html_text)
+                    self.assertIn(f'src="{quote_thumb}"', html_text)
+                    self.assertFalse(any(n.startswith("media/remote/") for n in names))
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
+
+    def test_remote_thumb_enabled_downloads_and_rewrites(self):
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_test"
+            username = "wxid_friend"
+            _, link_thumb, quote_thumb = self._prepare_account(root, account=account, username=username)
+
+            prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+            try:
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                svc = self._reload_export_modules()
+
+                fake_png = b"\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01\x08\x02\x00\x00\x00\x90wS\xde"
+
+                def _fake_get(url, **_kwargs):
+                    return _FakeResponse(fake_png, content_type="image/png")
+
+                with mock.patch.object(svc.requests, "get", side_effect=_fake_get) as m_get:
+                    job = self._create_job(
+                        svc.CHAT_EXPORT_MANAGER,
+                        account=account,
+                        username=username,
+                        download_remote_media=True,
+                    )
+                    self.assertEqual(job.status, "done", msg=job.error)
+                    self.assertGreaterEqual(m_get.call_count, 1)
+
+                with zipfile.ZipFile(job.zip_path, "r") as zf:
+                    names = set(zf.namelist())
+                    html_path = next((n for n in names if n.endswith("/messages.html")), "")
+                    self.assertTrue(html_path)
+                    html_text = zf.read(html_path).decode("utf-8")
+
+                    h1 = hashlib.sha256(link_thumb.encode("utf-8", errors="ignore")).hexdigest()
+                    arc1 = f"media/remote/{h1[:32]}.png"
+                    self.assertIn(arc1, names)
+                    self.assertIn(f"../../{arc1}", html_text)
+                    self.assertNotIn(f'src="{link_thumb}"', html_text)
+
+                    h2 = hashlib.sha256(quote_thumb.encode("utf-8", errors="ignore")).hexdigest()
+                    arc2 = f"media/remote/{h2[:32]}.png"
+                    self.assertIn(arc2, names)
+                    self.assertIn(f"../../{arc2}", html_text)
+                    self.assertNotIn(f'src="{quote_thumb}"', html_text)
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
+
@@ -0,0 +1,133 @@
+import os
+import sqlite3
+import sys
+import unittest
+import importlib
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from unittest.mock import patch
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class _FakeResponse:
+    def __init__(self, *, status_code: int = 200, headers: dict | None = None, url: str = "", body: bytes = b""):
+        self.status_code = int(status_code)
+        self.headers = dict(headers or {})
+        self.url = str(url or "")
+        self._body = bytes(body or b"")
+
+    def iter_content(self, chunk_size: int = 64 * 1024):
+        yield self._body
+
+    def close(self) -> None:
+        return None
+
+
+class TestChatMediaFavicon(unittest.TestCase):
+    def test_chat_media_favicon_caches(self):
+        from fastapi import FastAPI
+        from fastapi.testclient import TestClient
+
+        # 1x1 PNG (same as other avatar cache tests)
+        png = bytes.fromhex(
+            "89504E470D0A1A0A"
+            "0000000D49484452000000010000000108060000001F15C489"
+            "0000000D49444154789C6360606060000000050001A5F64540"
+            "0000000049454E44AE426082"
+        )
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+
+            prev_data = None
+            prev_cache = None
+            try:
+                prev_data = os.environ.get("WECHAT_TOOL_DATA_DIR")
+                prev_cache = os.environ.get("WECHAT_TOOL_AVATAR_CACHE_ENABLED")
+                os.environ["WECHAT_TOOL_DATA_DIR"] = str(root)
+                os.environ["WECHAT_TOOL_AVATAR_CACHE_ENABLED"] = "1"
+
+                import wechat_decrypt_tool.app_paths as app_paths
+                import wechat_decrypt_tool.avatar_cache as avatar_cache
+                import wechat_decrypt_tool.routers.chat_media as chat_media
+
+                importlib.reload(app_paths)
+                importlib.reload(avatar_cache)
+                importlib.reload(chat_media)
+
+                def fake_head(url, **_kwargs):
+                    # Pretend short-link resolves to bilibili.
+                    return _FakeResponse(
+                        status_code=200,
+                        headers={},
+                        url="https://www.bilibili.com/video/BV1Au4tzNEq2",
+                        body=b"",
+                    )
+
+                def fake_get(url, **_kwargs):
+                    u = str(url or "")
+                    if "www.bilibili.com/favicon.ico" in u:
+                        return _FakeResponse(
+                            status_code=200,
+                            headers={"Content-Type": "image/png", "content-length": str(len(png))},
+                            url=u,
+                            body=png,
+                        )
+                    return _FakeResponse(
+                        status_code=404,
+                        headers={"Content-Type": "text/html"},
+                        url=u,
+                        body=b"",
+                    )
+
+                app = FastAPI()
+                app.include_router(chat_media.router)
+                client = TestClient(app)
+
+                with patch("wechat_decrypt_tool.routers.chat_media.requests.head", side_effect=fake_head) as mock_head, patch(
+                    "wechat_decrypt_tool.routers.chat_media.requests.get", side_effect=fake_get
+                ) as mock_get:
+                    resp = client.get("/api/chat/media/favicon", params={"url": "https://b23.tv/au68guF"})
+                    self.assertEqual(resp.status_code, 200)
+                    self.assertTrue(resp.headers.get("content-type", "").startswith("image/"))
+                    self.assertEqual(resp.content, png)
+
+                    # Second call should hit disk cache (no extra favicon download).
+                    resp2 = client.get("/api/chat/media/favicon", params={"url": "https://b23.tv/au68guF"})
+                    self.assertEqual(resp2.status_code, 200)
+                    self.assertEqual(resp2.content, png)
+
+                    self.assertGreaterEqual(mock_head.call_count, 1)
+                    self.assertEqual(mock_get.call_count, 1)
+
+                cache_db = root / "output" / "avatar_cache" / "favicon" / "avatar_cache.db"
+                self.assertTrue(cache_db.exists())
+
+                conn = sqlite3.connect(str(cache_db))
+                try:
+                    row = conn.execute(
+                        "SELECT source_kind, source_url, media_type FROM avatar_cache_entries WHERE source_kind = 'url' LIMIT 1"
+                    ).fetchone()
+                    self.assertIsNotNone(row)
+                    self.assertEqual(str(row[0] or ""), "url")
+                    self.assertIn("favicon.ico", str(row[1] or ""))
+                    self.assertTrue(str(row[2] or "").startswith("image/"))
+                finally:
+                    conn.close()
+            finally:
+                if prev_data is None:
+                    os.environ.pop("WECHAT_TOOL_DATA_DIR", None)
+                else:
+                    os.environ["WECHAT_TOOL_DATA_DIR"] = prev_data
+                if prev_cache is None:
+                    os.environ.pop("WECHAT_TOOL_AVATAR_CACHE_ENABLED", None)
+                else:
+                    os.environ["WECHAT_TOOL_AVATAR_CACHE_ENABLED"] = prev_cache
+
+
+if __name__ == "__main__":
+    unittest.main()
+
@@ -0,0 +1,292 @@
+import hashlib
+import sqlite3
+import sys
+import unittest
+from datetime import datetime
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from unittest.mock import patch
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+from wechat_decrypt_tool.routers import chat as chat_router
+
+
+def _msg_table_name(username: str) -> str:
+    md5_hex = hashlib.md5(username.encode("utf-8")).hexdigest()
+    return f"Msg_{md5_hex}"
+
+
+def _seed_message_db(path: Path, *, username: str, rows: list[tuple[int, int]]) -> None:
+    """rows: [(create_time, sort_seq), ...]"""
+    table = _msg_table_name(username)
+    conn = sqlite3.connect(str(path))
+    try:
+        conn.execute(
+            f"""
+            CREATE TABLE "{table}"(
+                local_id INTEGER PRIMARY KEY AUTOINCREMENT,
+                create_time INTEGER,
+                sort_seq INTEGER
+            )
+            """
+        )
+        for create_time, sort_seq in rows:
+            conn.execute(
+                f'INSERT INTO "{table}"(create_time, sort_seq) VALUES (?, ?)',
+                (int(create_time), int(sort_seq)),
+            )
+        conn.commit()
+    finally:
+        conn.close()
+
+
+def _seed_message_db_full(path: Path, *, username: str, rows: list[tuple[int, int, str]]) -> None:
+    """rows: [(create_time, sort_seq, text), ...] - minimal schema for /api/chat/messages/around."""
+
+    table = _msg_table_name(username)
+    conn = sqlite3.connect(str(path))
+    try:
+        conn.execute(
+            f"""
+            CREATE TABLE "{table}"(
+                local_id INTEGER PRIMARY KEY AUTOINCREMENT,
+                server_id INTEGER,
+                local_type INTEGER,
+                sort_seq INTEGER,
+                real_sender_id INTEGER,
+                create_time INTEGER,
+                message_content TEXT,
+                compress_content BLOB
+            )
+            """
+        )
+        for create_time, sort_seq, text in rows:
+            conn.execute(
+                f'INSERT INTO "{table}"(server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content) '
+                "VALUES (?, ?, ?, ?, ?, ?, ?)",
+                (0, 1, int(sort_seq), 0, int(create_time), str(text), None),
+            )
+        conn.commit()
+    finally:
+        conn.close()
+
+
+def _seed_contact_db_minimal(path: Path) -> None:
+    conn = sqlite3.connect(str(path))
+    try:
+        conn.execute(
+            """
+            CREATE TABLE contact (
+                username TEXT,
+                remark TEXT,
+                nick_name TEXT,
+                alias TEXT,
+                big_head_url TEXT,
+                small_head_url TEXT
+            )
+            """
+        )
+        conn.execute(
+            """
+            CREATE TABLE stranger (
+                username TEXT,
+                remark TEXT,
+                nick_name TEXT,
+                alias TEXT,
+                big_head_url TEXT,
+                small_head_url TEXT
+            )
+            """
+        )
+        conn.commit()
+    finally:
+        conn.close()
+
+
+class TestChatMessageCalendarHeatmap(unittest.TestCase):
+    def test_daily_counts_aggregates_per_day_and_respects_month_range(self):
+        with TemporaryDirectory() as td:
+            account_dir = Path(td) / "acc"
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            username = "wxid_test_user"
+
+            ts_jan31_23 = int(datetime(2026, 1, 31, 23, 0, 0).timestamp())
+            ts_feb01_10 = int(datetime(2026, 2, 1, 10, 0, 0).timestamp())
+            ts_feb14_12 = int(datetime(2026, 2, 14, 12, 0, 0).timestamp())
+
+            _seed_message_db(
+                account_dir / "message.db",
+                username=username,
+                rows=[
+                    (ts_jan31_23, 0),
+                    (ts_feb01_10, 5),
+                    (ts_feb01_10, 2),
+                    (ts_feb14_12, 0),
+                ],
+            )
+
+            with patch.object(chat_router, "_resolve_account_dir", return_value=account_dir):
+                resp = chat_router.get_chat_message_daily_counts(
+                    username=username,
+                    year=2026,
+                    month=2,
+                    account="acc",
+                )
+
+            self.assertEqual(resp.get("status"), "success")
+            self.assertEqual(resp.get("username"), username)
+            self.assertEqual(resp.get("year"), 2026)
+            self.assertEqual(resp.get("month"), 2)
+
+            counts = resp.get("counts") or {}
+            self.assertEqual(counts.get("2026-02-01"), 2)
+            self.assertEqual(counts.get("2026-02-14"), 1)
+            self.assertIsNone(counts.get("2026-01-31"))
+
+            self.assertEqual(resp.get("total"), 3)
+            self.assertEqual(resp.get("max"), 2)
+
+    def test_anchor_day_picks_earliest_by_create_time_then_sort_seq_then_local_id(self):
+        with TemporaryDirectory() as td:
+            account_dir = Path(td) / "acc"
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            username = "wxid_test_user"
+
+            ts_jan31_23 = int(datetime(2026, 1, 31, 23, 0, 0).timestamp())
+            ts_feb01_10 = int(datetime(2026, 2, 1, 10, 0, 0).timestamp())
+
+            _seed_message_db(
+                account_dir / "message.db",
+                username=username,
+                rows=[
+                    (ts_jan31_23, 0),  # local_id = 1
+                    (ts_feb01_10, 5),  # local_id = 2
+                    (ts_feb01_10, 2),  # local_id = 3  <- expected (sort_seq smaller)
+                ],
+            )
+
+            with patch.object(chat_router, "_resolve_account_dir", return_value=account_dir):
+                resp = chat_router.get_chat_message_anchor(
+                    username=username,
+                    kind="day",
+                    account="acc",
+                    date="2026-02-01",
+                )
+
+            self.assertEqual(resp.get("status"), "success")
+            self.assertEqual(resp.get("kind"), "day")
+            self.assertEqual(resp.get("date"), "2026-02-01")
+            anchor_id = str(resp.get("anchorId") or "")
+            self.assertTrue(anchor_id.startswith("message:"), anchor_id)
+            self.assertTrue(anchor_id.endswith(":3"), anchor_id)
+
+    def test_anchor_first_picks_global_earliest(self):
+        with TemporaryDirectory() as td:
+            account_dir = Path(td) / "acc"
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            username = "wxid_test_user"
+
+            ts_jan31_23 = int(datetime(2026, 1, 31, 23, 0, 0).timestamp())
+            ts_feb01_10 = int(datetime(2026, 2, 1, 10, 0, 0).timestamp())
+
+            _seed_message_db(
+                account_dir / "message.db",
+                username=username,
+                rows=[
+                    (ts_feb01_10, 2),  # local_id = 1
+                    (ts_jan31_23, 0),  # local_id = 2, but earlier create_time -> should win even if local_id bigger
+                ],
+            )
+
+            with patch.object(chat_router, "_resolve_account_dir", return_value=account_dir):
+                resp = chat_router.get_chat_message_anchor(
+                    username=username,
+                    kind="first",
+                    account="acc",
+                )
+
+            self.assertEqual(resp.get("status"), "success")
+            self.assertEqual(resp.get("kind"), "first")
+            anchor_id = str(resp.get("anchorId") or "")
+            self.assertTrue(anchor_id.startswith("message:"), anchor_id)
+            self.assertTrue(anchor_id.endswith(":2"), anchor_id)
+
+    def test_anchor_day_empty_returns_empty_status(self):
+        with TemporaryDirectory() as td:
+            account_dir = Path(td) / "acc"
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            username = "wxid_test_user"
+            ts_feb01_10 = int(datetime(2026, 2, 1, 10, 0, 0).timestamp())
+
+            _seed_message_db(account_dir / "message.db", username=username, rows=[(ts_feb01_10, 0)])
+
+            with patch.object(chat_router, "_resolve_account_dir", return_value=account_dir):
+                resp = chat_router.get_chat_message_anchor(
+                    username=username,
+                    kind="day",
+                    account="acc",
+                    date="2026-02-02",
+                )
+
+            self.assertEqual(resp.get("status"), "empty")
+            self.assertEqual(resp.get("anchorId"), "")
+
+    def test_around_can_span_multiple_message_dbs_for_pagination(self):
+        from fastapi import FastAPI
+        from fastapi.testclient import TestClient
+
+        with TemporaryDirectory() as td:
+            account_dir = Path(td) / "acc"
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            username = "wxid_test_user"
+            table = _msg_table_name(username)
+
+            # Anchor in message.db, next message in message_1.db
+            _seed_message_db_full(
+                account_dir / "message.db",
+                username=username,
+                rows=[(1000, 0, "A")],  # local_id=1
+            )
+            _seed_message_db_full(
+                account_dir / "message_1.db",
+                username=username,
+                rows=[(2000, 0, "B")],  # local_id=1
+            )
+            _seed_contact_db_minimal(account_dir / "contact.db")
+
+            app = FastAPI()
+            app.include_router(chat_router.router)
+            client = TestClient(app)
+
+            with patch.object(chat_router, "_resolve_account_dir", return_value=account_dir):
+                resp = client.get(
+                    "/api/chat/messages/around",
+                    params={
+                        "account": "acc",
+                        "username": username,
+                        "anchor_id": f"message:{table}:1",
+                        "before": 0,
+                        "after": 10,
+                    },
+                )
+
+            self.assertEqual(resp.status_code, 200, resp.text)
+            data = resp.json()
+            self.assertEqual(data.get("status"), "success")
+            self.assertEqual(data.get("username"), username)
+            self.assertEqual(data.get("anchorId"), f"message:{table}:1")
+            self.assertEqual(data.get("anchorIndex"), 0)
+
+            msgs = data.get("messages") or []
+            self.assertEqual(len(msgs), 2)
+            self.assertEqual(msgs[0].get("id"), f"message:{table}:1")
+            self.assertEqual(msgs[1].get("id"), f"message_1:{table}:1")
@@ -0,0 +1,58 @@
+import sys
+import unittest
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+from wechat_decrypt_tool.chat_helpers import _parse_app_message
+
+
+class TestChatOfficialArticleCoverStyle(unittest.TestCase):
+    def test_mp_weixin_feed_url_is_cover_style(self):
+        raw_text = (
+            "<msg>"
+            "<appmsg>"
+            "<title>时尚穿搭：「这样的jk你喜欢吗」</title>"
+            "<des>这样的jk你喜欢吗？</des>"
+            "<type>5</type>"
+            "<url>"
+            "http://mp.weixin.qq.com/s?__biz=MzkxOTY4MjIxOA==&amp;mid=2247508015&amp;idx=1&amp;sn=931dce677c6e70b4365792b14e7e8ff0"
+            "&amp;exptype=masonry_feed_brief_content_elite_for_pcfeeds_u2i&amp;ranksessionid=1770868256_1&amp;req_id=1770867949535989#rd"
+            "</url>"
+            "<thumburl>https://mmbiz.qpic.cn/sz_mmbiz_jpg/foo/640?wx_fmt=jpeg&amp;wxfrom=401</thumburl>"
+            "<sourcedisplayname>甜图社</sourcedisplayname>"
+            "<sourceusername>gh_abc123</sourceusername>"
+            "</appmsg>"
+            "</msg>"
+        )
+
+        parsed = _parse_app_message(raw_text)
+        self.assertEqual(parsed.get("renderType"), "link")
+        self.assertEqual(parsed.get("linkType"), "official_article")
+        self.assertEqual(parsed.get("linkStyle"), "cover")
+
+    def test_mp_weixin_non_feed_url_keeps_default_style(self):
+        raw_text = (
+            "<msg>"
+            "<appmsg>"
+            "<title>普通分享</title>"
+            "<des>这样的jk你喜欢吗？</des>"
+            "<type>5</type>"
+            "<url>http://mp.weixin.qq.com/s?__biz=foo&amp;mid=1&amp;idx=1&amp;sn=bar#rd</url>"
+            "<sourcedisplayname>甜图社</sourcedisplayname>"
+            "<sourceusername>gh_abc123</sourceusername>"
+            "</appmsg>"
+            "</msg>"
+        )
+
+        parsed = _parse_app_message(raw_text)
+        self.assertEqual(parsed.get("renderType"), "link")
+        self.assertEqual(parsed.get("linkType"), "official_article")
+        self.assertEqual(parsed.get("linkStyle"), "default")
+
+
+if __name__ == "__main__":
+    unittest.main()
+
@@ -39,9 +39,20 @@ class TestContactsExport(unittest.TestCase):
        return cls._encode_varint(tag) + cls._encode_varint(int(value))

    @classmethod
-    def _build_extra_buffer(cls, *, country: str, province: str, city: str, source_scene: int) -> bytes:
+    def _build_extra_buffer(
+        cls,
+        *,
+        country: str,
+        province: str,
+        city: str,
+        source_scene: int,
+        gender: int = 0,
+        signature: str = "",
+    ) -> bytes:
        return b"".join(
            [
+                cls._encode_field_varint(2, gender),
+                cls._encode_field_len(4, signature.encode("utf-8")),
                cls._encode_field_len(5, country.encode("utf-8")),
                cls._encode_field_len(6, province.encode("utf-8")),
                cls._encode_field_len(7, city.encode("utf-8")),
@@ -88,6 +99,8 @@ class TestContactsExport(unittest.TestCase):
                province="Sichuan",
                city="Chengdu",
                source_scene=14,
+                gender=1,
+                signature="自助者天助！！！",
            )

            conn.execute(
@@ -320,6 +333,8 @@ class TestContactsExport(unittest.TestCase):
                self.assertEqual(friend_contact.get("province"), "Sichuan")
                self.assertEqual(friend_contact.get("city"), "Chengdu")
                self.assertEqual(friend_contact.get("region"), "中国大陆·Sichuan·Chengdu")
+                self.assertEqual(friend_contact.get("gender"), 1)
+                self.assertEqual(friend_contact.get("signature"), "自助者天助！！！")
                self.assertEqual(friend_contact.get("sourceScene"), 14)
                self.assertEqual(friend_contact.get("source"), "通过群聊添加")

@@ -62,7 +62,68 @@ class TestTransferPostprocess(unittest.TestCase):

        self.assertEqual(merged[0].get("transferStatus"), "已被接收")

+    def test_pending_transfer_marked_expired_by_system_message(self):
+        merged = [
+            {
+                "id": "message_0:Msg_x:100",
+                "renderType": "transfer",
+                "paySubType": "1",
+                "transferId": "t-expired-1",
+                "amount": "￥500.00",
+                "createTime": 1770742598,
+                "isSent": True,
+                "transferStatus": "转账",
+            },
+            {
+                "id": "message_0:Msg_x:101",
+                "renderType": "system",
+                "type": 10000,
+                "createTime": 1770829000,
+                "content": "收款方24小时内未接收你的转账，已过期",
+            },
+        ]
+
+        chat_router._postprocess_transfer_messages(merged)
+
+        self.assertEqual(merged[0].get("paySubType"), "10")
+        self.assertEqual(merged[0].get("transferStatus"), "已过期")
+
+    def test_expired_matching_wins_over_amount_time_received_fallback(self):
+        merged = [
+            {
+                "id": "message_0:Msg_x:200",
+                "renderType": "transfer",
+                "paySubType": "1",
+                "transferId": "t-expired-2",
+                "amount": "￥500.00",
+                "createTime": 1770742598,
+                "isSent": True,
+                "transferStatus": "",
+            },
+            {
+                "id": "message_0:Msg_x:201",
+                "renderType": "transfer",
+                "paySubType": "3",
+                "transferId": "t-other",
+                "amount": "￥500.00",
+                "createTime": 1770828800,
+                "isSent": False,
+                "transferStatus": "已收款",
+            },
+            {
+                "id": "message_0:Msg_x:202",
+                "renderType": "system",
+                "type": 10000,
+                "createTime": 1770829000,
+                "content": "收款方24小时内未接收你的转账，已过期",
+            },
+        ]
+
+        chat_router._postprocess_transfer_messages(merged)
+
+        self.assertEqual(merged[0].get("paySubType"), "10")
+        self.assertEqual(merged[0].get("transferStatus"), "已过期")
+

 if __name__ == "__main__":
    unittest.main()
-
@@ -0,0 +1,773 @@
+import hashlib
+import sqlite3
+import sys
+import unittest
+from datetime import datetime
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+class TestWrappedEmojiUniverse(unittest.TestCase):
+    def _ts(self, y: int, m: int, d: int, h: int = 0, mi: int = 0, s: int = 0) -> int:
+        return int(datetime(y, m, d, h, mi, s).timestamp())
+
+    def _seed_contact_db(self, path: Path, *, account: str, usernames: list[str]) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE contact (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                """
+                CREATE TABLE stranger (
+                    username TEXT,
+                    remark TEXT,
+                    nick_name TEXT,
+                    alias TEXT,
+                    local_type INTEGER,
+                    verify_flag INTEGER,
+                    big_head_url TEXT,
+                    small_head_url TEXT
+                )
+                """
+            )
+            conn.execute(
+                "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                (account, "", "我", "", 1, 0, "", ""),
+            )
+            for idx, username in enumerate(usernames):
+                conn.execute(
+                    "INSERT INTO contact VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+                    (username, "", f"好友{idx + 1}", "", 1, 0, "", ""),
+                )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_session_db(self, path: Path, *, usernames: list[str]) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE SessionTable (
+                    username TEXT,
+                    is_hidden INTEGER,
+                    sort_timestamp INTEGER
+                )
+                """
+            )
+            for username in usernames:
+                conn.execute("INSERT INTO SessionTable VALUES (?, ?, ?)", (username, 0, 1735689600))
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_message_db(
+        self,
+        path: Path,
+        *,
+        account: str,
+        username: str,
+        rows: list[dict[str, object]],
+    ) -> None:
+        table_name = f"msg_{hashlib.md5(username.encode('utf-8')).hexdigest()}"
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE Name2Id (rowid INTEGER PRIMARY KEY, user_name TEXT)")
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (1, account))
+            conn.execute("INSERT INTO Name2Id(rowid, user_name) VALUES (?, ?)", (2, username))
+            conn.execute(
+                f"""
+                CREATE TABLE {table_name} (
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    sort_seq INTEGER,
+                    real_sender_id INTEGER,
+                    create_time INTEGER,
+                    message_content TEXT,
+                    compress_content BLOB,
+                    packed_info_data BLOB
+                )
+                """
+            )
+            for row in rows:
+                conn.execute(
+                    f"""
+                    INSERT INTO {table_name}
+                    (local_id, server_id, local_type, sort_seq, real_sender_id, create_time, message_content, compress_content, packed_info_data)
+                    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+                    """,
+                    (
+                        int(row.get("local_id", 0)),
+                        int(row.get("server_id", 0)),
+                        int(row.get("local_type", 0)),
+                        int(row.get("sort_seq", row.get("local_id", 0))),
+                        int(row.get("real_sender_id", 1)),
+                        int(row.get("create_time", 0)),
+                        str(row.get("message_content", "")),
+                        row.get("compress_content"),
+                        row.get("packed_info_data"),
+                    ),
+                )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_index_db(self, path: Path, *, rows: list[dict[str, object]]) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute(
+                """
+                CREATE TABLE message_fts (
+                    text TEXT,
+                    username TEXT,
+                    render_type TEXT,
+                    create_time INTEGER,
+                    sort_seq INTEGER,
+                    local_id INTEGER,
+                    server_id INTEGER,
+                    local_type INTEGER,
+                    db_stem TEXT,
+                    table_name TEXT,
+                    sender_username TEXT,
+                    is_hidden INTEGER,
+                    is_official INTEGER
+                )
+                """
+            )
+            for row in rows:
+                conn.execute(
+                    """
+                    INSERT INTO message_fts (
+                        text, username, render_type, create_time, sort_seq, local_id, server_id, local_type,
+                        db_stem, table_name, sender_username, is_hidden, is_official
+                    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+                    """,
+                    (
+                        str(row.get("text", "")),
+                        str(row.get("username", "")),
+                        str(row.get("render_type", "")),
+                        int(row.get("create_time", 0)),
+                        int(row.get("sort_seq", 0)),
+                        int(row.get("local_id", 0)),
+                        int(row.get("server_id", 0)),
+                        int(row.get("local_type", 0)),
+                        str(row.get("db_stem", "message_0")),
+                        str(row.get("table_name", "")),
+                        str(row.get("sender_username", "")),
+                        int(row.get("is_hidden", 0)),
+                        int(row.get("is_official", 0)),
+                    ),
+                )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def _seed_resource_db(
+        self,
+        path: Path,
+        *,
+        username: str,
+        md5: str,
+        server_id: int,
+        local_id: int,
+        create_time: int,
+    ) -> None:
+        conn = sqlite3.connect(str(path))
+        try:
+            conn.execute("CREATE TABLE ChatName2Id (user_name TEXT)")
+            conn.execute("INSERT INTO ChatName2Id (rowid, user_name) VALUES (?, ?)", (7, username))
+            conn.execute(
+                """
+                CREATE TABLE MessageResourceInfo (
+                    message_id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    message_svr_id INTEGER,
+                    chat_id INTEGER,
+                    message_local_type INTEGER,
+                    packed_info BLOB,
+                    message_local_id INTEGER,
+                    message_create_time INTEGER
+                )
+                """
+            )
+            packed = f"/tmp/{md5}.dat".encode("utf-8")
+            conn.execute(
+                """
+                INSERT INTO MessageResourceInfo
+                (message_svr_id, chat_id, message_local_type, packed_info, message_local_id, message_create_time)
+                VALUES (?, ?, ?, ?, ?, ?)
+                """,
+                (int(server_id), 7, 47, packed, int(local_id), int(create_time)),
+            )
+            conn.commit()
+        finally:
+            conn.close()
+
+    def test_only_sticker_messages_outputs_core_stats(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_a"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            md5_a = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+            md5_b = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
+            rows = [
+                {
+                    "local_id": 1,
+                    "server_id": 1001,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 1, 1, 10, 5, 0),
+                    "message_content": f'<msg><emoji md5="{md5_a}" cdnurl="http://cdn/a.gif"/></msg>',
+                },
+                {
+                    "local_id": 2,
+                    "server_id": 1002,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 1, 1, 10, 30, 0),
+                    "message_content": f'<msg><emoji md5="{md5_a}" cdnurl="http://cdn/a2.gif"/></msg>',
+                },
+                {
+                    "local_id": 3,
+                    "server_id": 1003,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 1, 2, 22, 10, 0),
+                    "message_content": f'<msg><emoji md5="{md5_b}" cdnurl="http://cdn/b.gif"/></msg>',
+                },
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            table_name = f"msg_{hashlib.md5(friend.encode('utf-8')).hexdigest()}"
+            fts_rows = []
+            for row in rows:
+                fts_rows.append(
+                    {
+                        "text": "[表情]",
+                        "username": friend,
+                        "render_type": "emoji",
+                        "create_time": row["create_time"],
+                        "sort_seq": row["local_id"],
+                        "local_id": row["local_id"],
+                        "server_id": row["server_id"],
+                        "local_type": 47,
+                        "db_stem": "message_0",
+                        "table_name": table_name,
+                        "sender_username": account,
+                    }
+                )
+            self._seed_index_db(account_dir / "chat_search_index.db", rows=fts_rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertTrue(data["settings"]["usedIndex"])
+            self.assertEqual(data["sentStickerCount"], 3)
+            self.assertEqual(data["peakHour"], 10)
+            self.assertIsNotNone(data["peakWeekday"])
+            self.assertEqual(data["topBattlePartner"]["username"], friend)
+            self.assertEqual(data["topBattlePartner"]["stickerCount"], 3)
+            self.assertEqual(data["topBattlePartner"]["maskedName"], data["topBattlePartner"]["displayName"])
+            self.assertEqual(data["topStickers"][0]["md5"], md5_a)
+            self.assertEqual(data["topStickers"][0]["count"], 2)
+            self.assertTrue(str(data["topStickers"][0].get("sampleDisplayName") or "").strip())
+            self.assertTrue(str(data["topStickers"][0].get("sampleAvatarUrl") or "").startswith("/api/chat/avatar"))
+
+    def test_fallback_to_resource_md5_when_xml_missing(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_b"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            ts = self._ts(2025, 3, 8, 21, 0, 0)
+            rows = [
+                {
+                    "local_id": 11,
+                    "server_id": 220011,
+                    "local_type": 47,
+                    "create_time": ts,
+                    "message_content": '<msg><emoji cdnurl="http://cdn/no_md5.gif"/></msg>',
+                }
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            md5_fallback = "cccccccccccccccccccccccccccccccc"
+            self._seed_resource_db(
+                account_dir / "message_resource.db",
+                username=friend,
+                md5=md5_fallback,
+                server_id=220011,
+                local_id=11,
+                create_time=ts,
+            )
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertFalse(data["settings"]["usedIndex"])
+            self.assertEqual(data["sentStickerCount"], 1)
+            self.assertEqual(data["topStickers"][0]["md5"], md5_fallback)
+            self.assertEqual(data["topStickers"][0]["count"], 1)
+
+    def test_text_emoji_mapping_from_wechat_emojis_ts(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_c"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            table_name = f"msg_{hashlib.md5(friend.encode('utf-8')).hexdigest()}"
+            fts_rows = [
+                {
+                    "text": "早上好[微笑][微笑]🙂🙂",
+                    "username": friend,
+                    "render_type": "text",
+                    "create_time": self._ts(2025, 4, 1, 9, 0, 0),
+                    "local_id": 1,
+                    "server_id": 901,
+                    "local_type": 1,
+                    "db_stem": "message_0",
+                    "table_name": table_name,
+                    "sender_username": account,
+                },
+                {
+                    "text": "晚上见[微笑][发呆]😂",
+                    "username": friend,
+                    "render_type": "text",
+                    "create_time": self._ts(2025, 4, 1, 22, 0, 0),
+                    "local_id": 2,
+                    "server_id": 902,
+                    "local_type": 1,
+                    "db_stem": "message_0",
+                    "table_name": table_name,
+                    "sender_username": account,
+                },
+            ]
+            self._seed_index_db(account_dir / "chat_search_index.db", rows=fts_rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+            self.assertTrue(data["settings"]["usedIndex"])
+            self.assertGreaterEqual(len(data["topTextEmojis"]), 1)
+            self.assertEqual(data["topTextEmojis"][0]["key"], "[微笑]")
+            self.assertEqual(data["topTextEmojis"][0]["count"], 3)
+            self.assertTrue(data["topTextEmojis"][0]["assetPath"].endswith("Expression_1@2x.png"))
+            self.assertGreaterEqual(len(data["topUnicodeEmojis"]), 1)
+            self.assertEqual(data["topUnicodeEmojis"][0]["emoji"], "🙂")
+            self.assertEqual(data["topUnicodeEmojis"][0]["count"], 2)
+
+    def test_wechat_builtin_emoji_from_packed_info_data(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_e"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            # packed_info_data protobuf varints:
+            # 08 04 => field#1=4
+            # 10 33 => field#2=51 (Expression_51@2x)
+            rows = [
+                {
+                    "local_id": 1,
+                    "server_id": 501,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 7, 1, 10, 0, 0),
+                    "message_content": "binary_emoji_payload_a",
+                    "packed_info_data": bytes.fromhex("08041033"),
+                },
+                {
+                    "local_id": 2,
+                    "server_id": 502,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 7, 1, 10, 1, 0),
+                    "message_content": "binary_emoji_payload_b",
+                    "packed_info_data": bytes.fromhex("08041033"),
+                },
+                {
+                    "local_id": 3,
+                    "server_id": 503,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 7, 1, 11, 0, 0),
+                    "message_content": "binary_emoji_payload_c",
+                    "packed_info_data": bytes.fromhex("0804104a"),
+                },
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertFalse(data["settings"]["usedIndex"])
+            self.assertEqual(data["sentStickerCount"], 3)
+            self.assertGreaterEqual(len(data["topWechatEmojis"]), 1)
+            self.assertEqual(data["topWechatEmojis"][0]["id"], 51)
+            self.assertEqual(data["topWechatEmojis"][0]["count"], 2)
+            self.assertTrue(data["topWechatEmojis"][0]["assetPath"].endswith("Expression_51@2x.png"))
+            self.assertGreaterEqual(len(data["topStickers"]), 1)
+            self.assertEqual(data["topStickers"][0]["emojiId"], 51)
+            self.assertEqual(data["topStickers"][0]["count"], 2)
+            self.assertTrue(str(data["topStickers"][0].get("emojiAssetPath") or "").endswith("Expression_51@2x.png"))
+
+    def test_index_counts_only_sent_messages(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_sent_only"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            rows = [
+                {
+                    "text": "[ 微 笑 ]",
+                    "username": friend,
+                    "render_type": "text",
+                    "create_time": self._ts(2025, 6, 2, 9, 0, 0),
+                    "local_id": 101,
+                    "server_id": 4001,
+                    "local_type": 1,
+                    "table_name": "msg_dummy",
+                    "sender_username": account,
+                },
+                {
+                    "text": "[ 发 呆 ]",
+                    "username": friend,
+                    "render_type": "text",
+                    "create_time": self._ts(2025, 6, 2, 9, 1, 0),
+                    "local_id": 102,
+                    "server_id": 4002,
+                    "local_type": 1,
+                    "table_name": "msg_dummy",
+                    "sender_username": friend,
+                },
+                {
+                    "text": "[表情]",
+                    "username": friend,
+                    "render_type": "emoji",
+                    "create_time": self._ts(2025, 6, 2, 9, 2, 0),
+                    "local_id": 201,
+                    "server_id": 5001,
+                    "local_type": 47,
+                    "table_name": "msg_dummy",
+                    "sender_username": account,
+                },
+                {
+                    "text": "[表情]",
+                    "username": friend,
+                    "render_type": "emoji",
+                    "create_time": self._ts(2025, 6, 2, 9, 3, 0),
+                    "local_id": 202,
+                    "server_id": 5002,
+                    "local_type": 47,
+                    "table_name": "msg_dummy",
+                    "sender_username": friend,
+                },
+            ]
+            self._seed_index_db(account_dir / "chat_search_index.db", rows=rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+            self.assertTrue(data["settings"]["usedIndex"])
+
+            self.assertEqual(data["sentStickerCount"], 1)
+
+            keys = {x.get("key") for x in data.get("topTextEmojis") or []}
+            self.assertIn("[微笑]", keys)
+            self.assertNotIn("[发呆]", keys)
+
+    def test_raw_db_counts_only_sent_messages(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_raw_dir"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            rows = [
+                {
+                    "local_id": 1,
+                    "server_id": 1001,
+                    "local_type": 1,
+                    "real_sender_id": 1,
+                    "create_time": self._ts(2025, 7, 1, 8, 0, 0),
+                    "message_content": "/::B",
+                },
+                {
+                    "local_id": 2,
+                    "server_id": 1002,
+                    "local_type": 1,
+                    "real_sender_id": 2,
+                    "create_time": self._ts(2025, 7, 1, 8, 1, 0),
+                    "message_content": "/::B",
+                },
+                {
+                    "local_id": 3,
+                    "server_id": 1101,
+                    "local_type": 47,
+                    "real_sender_id": 1,
+                    "create_time": self._ts(2025, 7, 1, 9, 0, 0),
+                    "message_content": "binary_emoji_payload_a",
+                    "packed_info_data": bytes.fromhex("08031033"),
+                },
+                {
+                    "local_id": 4,
+                    "server_id": 1102,
+                    "local_type": 47,
+                    "real_sender_id": 2,
+                    "create_time": self._ts(2025, 7, 1, 9, 1, 0),
+                    "message_content": "binary_emoji_payload_b",
+                    "packed_info_data": bytes.fromhex("08031033"),
+                },
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertFalse(data["settings"]["usedIndex"])
+            self.assertEqual(data["sentStickerCount"], 1)
+            self.assertEqual(data["topWechatEmojis"][0]["id"], 51)
+            self.assertEqual(data["topWechatEmojis"][0]["count"], 1)
+
+            self.assertGreaterEqual(len(data["topTextEmojis"]), 1)
+            self.assertEqual(data["topTextEmojis"][0]["key"], "[色]")
+            self.assertEqual(data["topTextEmojis"][0]["count"], 1)
+            self.assertTrue(data["topTextEmojis"][0]["assetPath"].endswith("Expression_3@2x.png"))
+
+    def test_new_and_revived_sticker_metrics(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_new_revived"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            md5_revived = "dddddddddddddddddddddddddddddddd"
+            md5_recent = "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
+            md5_new = "ffffffffffffffffffffffffffffffff"
+            rows = [
+                {
+                    "local_id": 1,
+                    "server_id": 5001,
+                    "local_type": 47,
+                    "create_time": self._ts(2024, 1, 1, 9, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_revived}" /></msg>',
+                },
+                {
+                    "local_id": 2,
+                    "server_id": 5002,
+                    "local_type": 47,
+                    "create_time": self._ts(2024, 12, 28, 10, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_recent}" /></msg>',
+                },
+                {
+                    "local_id": 3,
+                    "server_id": 5003,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 1, 5, 11, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_recent}" /></msg>',
+                },
+                {
+                    "local_id": 4,
+                    "server_id": 5004,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 3, 15, 12, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_revived}" /></msg>',
+                },
+                {
+                    "local_id": 5,
+                    "server_id": 5005,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 5, 10, 13, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_new}" /></msg>',
+                },
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertEqual(data["sentStickerCount"], 3)
+            self.assertEqual(data["uniqueStickerTypeCount"], 3)
+            self.assertEqual(data["newStickerCountThisYear"], 1)
+            self.assertEqual(data["revivedStickerCount"], 1)
+            self.assertEqual(data["revivedMinGapDays"], 60)
+            self.assertGreaterEqual(int(data.get("revivedMaxGapDays") or 0), 400)
+            new_samples = list(data.get("newStickerSamples") or [])
+            revived_samples = list(data.get("revivedStickerSamples") or [])
+            self.assertTrue(any(str(x.get("md5") or "") == md5_new for x in new_samples))
+            self.assertTrue(any(str(x.get("md5") or "") == md5_revived for x in revived_samples))
+            revived_item = next((x for x in revived_samples if str(x.get("md5") or "") == md5_revived), {})
+            self.assertGreaterEqual(int(revived_item.get("gapDays") or 0), 400)
+
+    def test_empty_year_returns_safe_empty_state(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import build_card_04_emoji_universe
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[])
+            self._seed_session_db(account_dir / "session.db", usernames=[])
+
+            card = build_card_04_emoji_universe(account_dir=account_dir, year=2025)
+            self.assertEqual(card["id"], 4)
+            self.assertEqual(card["status"], "ok")
+            self.assertEqual(card["data"]["sentStickerCount"], 0)
+            self.assertIn("几乎没用表情表达", card["narrative"])
+            self.assertIsInstance(card["data"]["lines"], list)
+            self.assertGreaterEqual(len(card["data"]["lines"]), 1)
+            self.assertEqual(card["data"].get("topUnicodeEmojis"), [])
+
+    def test_tie_break_is_stable_by_key(self):
+        from wechat_decrypt_tool.wrapped.cards.card_04_emoji_universe import compute_emoji_universe_stats
+
+        with TemporaryDirectory() as td:
+            root = Path(td)
+            account = "wxid_me"
+            friend = "wxid_friend_d"
+            account_dir = root / account
+            account_dir.mkdir(parents=True, exist_ok=True)
+
+            self._seed_contact_db(account_dir / "contact.db", account=account, usernames=[friend])
+            self._seed_session_db(account_dir / "session.db", usernames=[friend])
+
+            md5_a = "11111111111111111111111111111111"
+            md5_b = "22222222222222222222222222222222"
+            rows = [
+                {
+                    "local_id": 1,
+                    "server_id": 301,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 6, 1, 8, 0, 0),
+                    "message_content": f'<msg><emoji md5="{md5_a}" /></msg>',
+                },
+                {
+                    "local_id": 2,
+                    "server_id": 302,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 6, 1, 8, 1, 0),
+                    "message_content": f'<msg><emoji md5="{md5_b}" /></msg>',
+                },
+                {
+                    "local_id": 3,
+                    "server_id": 303,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 6, 1, 8, 2, 0),
+                    "message_content": f'<msg><emoji md5="{md5_a}" /></msg>',
+                },
+                {
+                    "local_id": 4,
+                    "server_id": 304,
+                    "local_type": 47,
+                    "create_time": self._ts(2025, 6, 1, 8, 3, 0),
+                    "message_content": f'<msg><emoji md5="{md5_b}" /></msg>',
+                },
+            ]
+            self._seed_message_db(account_dir / "message_0.db", account=account, username=friend, rows=rows)
+
+            table_name = f"msg_{hashlib.md5(friend.encode('utf-8')).hexdigest()}"
+            fts_rows = []
+            for row in rows:
+                fts_rows.append(
+                    {
+                        "text": "[表情]",
+                        "username": friend,
+                        "render_type": "emoji",
+                        "create_time": row["create_time"],
+                        "local_id": row["local_id"],
+                        "server_id": row["server_id"],
+                        "local_type": 47,
+                        "db_stem": "message_0",
+                        "table_name": table_name,
+                        "sender_username": account,
+                    }
+                )
+            fts_rows.extend(
+                [
+                    {
+                        # `chat_search_index` stores text as char-tokens: "[微笑][发呆]" -> "[ 微 笑 ] [ 发 呆 ]"
+                        "text": "[ 微 笑 ] [ 发 呆 ]",
+                        "username": friend,
+                        "render_type": "text",
+                        "create_time": self._ts(2025, 6, 2, 9, 0, 0),
+                        "local_id": 101,
+                        "server_id": 4001,
+                        "local_type": 1,
+                        "db_stem": "message_0",
+                        "table_name": table_name,
+                        "sender_username": account,
+                    },
+                    {
+                        "text": "[ 发 呆 ] [ 微 笑 ]",
+                        "username": friend,
+                        "render_type": "text",
+                        "create_time": self._ts(2025, 6, 2, 9, 1, 0),
+                        "local_id": 102,
+                        "server_id": 4002,
+                        "local_type": 1,
+                        "db_stem": "message_0",
+                        "table_name": table_name,
+                        "sender_username": account,
+                    },
+                ]
+            )
+            self._seed_index_db(account_dir / "chat_search_index.db", rows=fts_rows)
+
+            data = compute_emoji_universe_stats(account_dir=account_dir, year=2025)
+
+            self.assertEqual(data["topStickers"][0]["md5"], md5_a)
+            expected_emoji_key = sorted(["[微笑]", "[发呆]"])[0]
+            self.assertEqual(data["topTextEmojis"][0]["key"], expected_emoji_key)
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,530 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+导出微信数据库字段配置为一份 Markdown 文档（单文件）：
+
+- 输入：wechat_db_config.json（由 tools/generate_wechat_db_config.py 生成）
+- 输出：Markdown（包含：数据库 → 表/表组 → 字段与含义）
+
+说明：
+- 本脚本只基于“配置文件中的结构与字段含义”生成文档，不会读取真实数据内容；
+- 会对类似 Msg_<md5> 这类用户相关的哈希表名做脱敏显示。
+- 会将“同结构但表名仅数字不同”的重复表自动折叠为一个表组（常见于 FTS 分片/内部表）。
+
+用法示例：
+  python tools/export_database_schema_markdown.py \
+      --config wechat_db_config.json \
+      --output docs/wechat_database_schema.md
+"""
+
+from __future__ import annotations
+
+import argparse
+import json
+import re
+from datetime import datetime
+from pathlib import Path
+from typing import Any
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+_HASH_TABLE_RE = re.compile(r"^([A-Za-z0-9]+)_([0-9a-fA-F]{16,})$")
+
+
+def _md_escape_cell(v: Any) -> str:
+    """Escape Markdown table cell content."""
+    if v is None:
+        return "-"
+    s = str(v)
+    # Keep it one-line for tables.
+    s = s.replace("\r", " ").replace("\n", " ").strip()
+    # Escape pipe
+    s = s.replace("|", r"\|")
+    return s if s else "-"
+
+
+def _mask_hash_table_name(name: str) -> str:
+    """
+    Mask user-specific hash suffix table names:
+      Msg_00140f... -> Msg_<hash>
+    """
+    m = _HASH_TABLE_RE.match(name)
+    if not m:
+        return name
+    return f"{m.group(1)}_<hash>"
+
+
+def _db_sort_key(db_name: str) -> tuple[int, int, str]:
+    """
+    Roughly sort DBs by importance for readers.
+    """
+    # Core
+    if db_name == "contact":
+        return (10, 0, db_name)
+    if db_name == "session":
+        return (20, 0, db_name)
+    m = re.match(r"^message_(\d+)$", db_name)
+    if m:
+        return (30, int(m.group(1)), db_name)
+    if re.match(r"^biz_message_(\d+)$", db_name):
+        n = int(re.match(r"^biz_message_(\d+)$", db_name).group(1))  # type: ignore[union-attr]
+        return (31, n, db_name)
+    if db_name == "message_resource":
+        return (40, 0, db_name)
+    if db_name == "media_0":
+        return (41, 0, db_name)
+    if db_name == "hardlink":
+        return (42, 0, db_name)
+    if db_name == "head_image":
+        return (43, 0, db_name)
+
+    # Social / content
+    if db_name == "sns":
+        return (50, 0, db_name)
+    if db_name == "favorite":
+        return (60, 0, db_name)
+    if db_name == "emoticon":
+        return (70, 0, db_name)
+
+    # System / misc
+    if db_name in {"general", "unspportmsg"}:
+        return (80, 0, db_name)
+
+    # Search / index
+    if db_name in {"chat_search_index", "message_fts"} or db_name.endswith("_fts"):
+        return (90, 0, db_name)
+
+    # Others
+    return (100, 0, db_name)
+
+
+def _render_message_type_map(message_types: dict[str, Any]) -> str:
+    # In Windows WeChat v4, `local_type` is commonly a 64-bit integer:
+    #   raw = (sub_type << 32) | type
+    # Some configs may still store explicit (type, sub_type) pairs; handle both.
+    items: list[tuple[int, int, int, str]] = []
+    for k, v in message_types.items():
+        if k in {"_instructions", "examples"}:
+            continue
+        if not isinstance(k, str) or "," not in k:
+            continue
+        a, b = k.split(",", 1)
+        try:
+            a_i = int(a)
+            b_i = int(b)
+        except Exception:
+            continue
+        desc = str(v)
+
+        if b_i != 0:
+            msg_type = a_i
+            msg_sub = b_i
+            raw = (msg_sub << 32) | (msg_type & 0xFFFFFFFF)
+        else:
+            raw = a_i
+            msg_type = raw & 0xFFFFFFFF
+            msg_sub = (raw >> 32) & 0xFFFFFFFF
+
+        items.append((raw, msg_type, msg_sub, desc))
+
+    if not items:
+        return ""
+
+    # Sort by decoded (type, sub_type), then raw value.
+    items.sort(key=lambda x: (x[1], x[2], x[0]))
+
+    out = "## 消息类型（local_type）速查\n\n"
+    out += "说明：Windows 微信 v4 的 `local_type` 常见为 64 位整型：`raw = (sub_type<<32) | type`。\n\n"
+    out += "| local_type(raw) | type(low32) | sub_type(high32) | 含义 |\n|---:|---:|---:|---|\n"
+    for raw, t, st, desc in items:
+        out += f"| {raw} | {t} | {st} | {_md_escape_cell(desc)} |\n"
+    return out + "\n"
+
+
+def _table_schema_signature(table: dict[str, Any]) -> tuple[str, str, tuple[tuple[str, str, str, str], ...]]:
+    """
+    Build a stable signature for a table schema in config.
+
+    Used to fold tables which are structurally identical but only differ in name
+    (e.g. message_fts_v4_aux_0..3).
+    """
+    t_type = str(table.get("type", "table"))
+    desc = str(table.get("description", ""))
+    fields = table.get("fields") or {}
+
+    items: list[tuple[str, str, str, str]] = []
+    if isinstance(fields, dict):
+        for field_name, fm in fields.items():
+            if not isinstance(fm, dict):
+                fm = {}
+            items.append(
+                (
+                    str(field_name),
+                    str(fm.get("type", "")),
+                    str(fm.get("meaning", "")),
+                    str(fm.get("notes", "")),
+                )
+            )
+    items.sort(key=lambda x: x[0])
+    return (t_type, desc, tuple(items))
+
+
+def _name_family_key(name: str) -> str:
+    """Normalize a table name into a family key by replacing digit runs with {n}."""
+    return re.sub(r"\d+", "{n}", name)
+
+
+def _make_group_pattern(table_names: list[str]) -> str:
+    """
+    Make a readable pattern for a group of similar table names:
+
+    - Only varying numeric segments become `{n}`
+    - Constant numeric segments are kept as-is
+
+    Example:
+      message_fts_v4_0/message_fts_v4_1 -> message_fts_v4_{n}
+      ImgFts0V0/ImgFts1V0 -> ImgFts{n}V0
+    """
+    if not table_names:
+        return ""
+
+    tokenized = [re.split(r"(\d+)", n) for n in table_names]
+    base = tokenized[0]
+
+    # Ensure token structures match; otherwise fall back to a simple normalization.
+    for t in tokenized[1:]:
+        if len(t) != len(base):
+            return _name_family_key(table_names[0])
+        for i in range(0, len(base), 2):
+            if t[i] != base[i]:
+                return _name_family_key(table_names[0])
+
+    out_parts: list[str] = []
+    for i, part in enumerate(base):
+        if i % 2 == 0:
+            out_parts.append(part)
+            continue
+        nums = {t[i] for t in tokenized if i < len(t)}
+        out_parts.append(part if len(nums) == 1 else "{n}")
+    return "".join(out_parts)
+
+
+def _fold_same_schema_tables_for_display(
+    tables: dict[str, Any],
+) -> list[tuple[str, dict[str, Any]]]:
+    """
+    Fold duplicated tables that share the same schema/signature but only differ in name.
+
+    This is common in FTS shards, e.g.:
+      message_fts_v4_aux_0..3
+      message_fts_v4_0..3 and their internal *_content/*_data/*_idx tables
+      ImgFts0V0..3 and their internal tables
+
+    Returns a list of (display_name, table_dict) items sorted by the original table name order.
+    """
+    if not tables:
+        return []
+
+    # (family_key, schema_sig) -> [table_name, ...]
+    groups: dict[tuple[str, tuple[str, str, tuple[tuple[str, str, str, str], ...]]], list[str]] = {}
+    for table_name, table in tables.items():
+        if not isinstance(table, dict):
+            continue
+        if str(table.get("type", "table")) == "similar_group":
+            continue
+        family = _name_family_key(str(table_name))
+        sig = _table_schema_signature(table)
+        groups.setdefault((family, sig), []).append(str(table_name))
+
+    consumed: set[str] = set()
+    items: list[tuple[str, str, dict[str, Any]]] = []  # (sort_key, display_name, table)
+    used_display_names: set[str] = set()
+
+    # Create auto "similar_group" entries for groups > 1.
+    for (_, _), names in sorted(groups.items(), key=lambda x: x[0][0]):
+        if len(names) <= 1:
+            continue
+        names_sorted = sorted(names)
+        rep = names_sorted[0]
+        rep_table = tables.get(rep)
+        if not isinstance(rep_table, dict):
+            continue
+        pattern = _make_group_pattern(names_sorted)
+        if not pattern:
+            pattern = _name_family_key(rep)
+
+        display_name = pattern
+        if display_name in used_display_names:
+            # Rare: same name pattern but different schema signatures. Disambiguate.
+            n = 2
+            while f"{pattern} (var{n})" in used_display_names:
+                n += 1
+            display_name = f"{pattern} (var{n})"
+
+        group_entry = dict(rep_table)
+        group_entry.update(
+            {
+                "type": "similar_group",
+                "pattern": pattern,
+                "table_count": len(names_sorted),
+                "representative_table": rep,
+                "table_names": names_sorted,
+            }
+        )
+        items.append((rep, display_name, group_entry))
+        used_display_names.add(display_name)
+        consumed.update(names_sorted)
+
+    # Keep non-grouped tables (and existing similar_group) as-is.
+    for table_name, table in tables.items():
+        if not isinstance(table, dict):
+            continue
+        if str(table_name) in consumed:
+            continue
+        items.append((str(table_name), str(table_name), table))
+
+    items.sort(key=lambda x: (x[0], x[1]))
+    return [(display_name, table) for _, display_name, table in items]
+
+
+def export_markdown(config_path: Path, output_path: Path) -> None:
+    cfg = json.loads(config_path.read_text(encoding="utf-8"))
+    meta = cfg.get("_metadata") or {}
+    databases: dict[str, Any] = cfg.get("databases") or {}
+
+    # message_{n}.db are typically shards with identical schema. Keep only the last shard for detailed sections.
+    message_shards: list[tuple[int, str]] = []
+    for name in databases.keys():
+        m = re.match(r"^message_(\d+)$", str(name))
+        if not m:
+            continue
+        try:
+            message_shards.append((int(m.group(1)), str(name)))
+        except Exception:
+            continue
+    message_shards.sort(key=lambda x: x[0])
+    rep_message_db: str | None = message_shards[-1][1] if message_shards else None
+    all_message_db_names = [n for _, n in message_shards]
+
+    now = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+    gen_time = meta.get("generated_time") or now
+
+    lines: list[str] = []
+    lines.append("# Windows 微信数据库结构文档（自动生成）")
+    lines.append("")
+    lines.append(f"> 生成时间：{_md_escape_cell(gen_time)}")
+    lines.append(f"> 本次导出：{now}")
+    lines.append(f"> 配置来源：`{config_path.as_posix()}`（由 `tools/generate_wechat_db_config.py` 生成）")
+    lines.append("")
+    lines.append("参考资料：")
+    lines.append("- `万字长文带你了解Windows微信.md`（目录结构/部分表结构与含义）")
+    lines.append("- 本项目前端页面与后端解析逻辑（字段命名与用途）")
+    lines.append("")
+    lines.append("注意：")
+    lines.append("- 本文档尽量覆盖“库/表/字段”，字段含义部分来自启发式与公开资料，可能存在不准确之处。")
+    lines.append("- 为避免泄露个人数据，类似 `Msg_<md5>` 的哈希表名会脱敏显示。")
+    lines.append("- 部分 FTS 虚表可能依赖微信自定义 tokenizer（如 `MMFtsTokenizer`），普通 sqlite 环境下查询会报错；本文档字段来自建表 SQL/模板解析。")
+    lines.append("")
+
+    # Overview
+    lines.append("## 数据库总览")
+    lines.append("")
+    lines.append("| 数据库 | 描述 | 表数量 |")
+    lines.append("|---|---|---:|")
+
+    for db_name in sorted(databases.keys(), key=_db_sort_key):
+        db = databases.get(db_name) or {}
+        if not isinstance(db, dict):
+            continue
+        desc = db.get("description", "")
+        tables = db.get("tables") or {}
+        lines.append(
+            f"| `{db_name}.db` | {_md_escape_cell(desc)} | {len(tables) if isinstance(tables, dict) else 0} |"
+        )
+    lines.append("")
+
+    lines.append("## 本项目（前端）功能与数据库大致对应")
+    lines.append("")
+    lines.append("- 联系人/群聊：`contact.db`（contact/chat_room/chatroom_member/label 等）")
+    lines.append("- 会话列表/未读：`session.db`（通常为 SessionTable/ChatInfo 等）")
+    lines.append("- 聊天记录：`message_*.db`（`Msg_*` 表组 + `Name2Id` 映射等）")
+    lines.append("- 消息资源/媒体：`message_resource.db` / `hardlink.db` / `media_0.db` / `head_image.db`")
+    lines.append("- 朋友圈：`sns.db`")
+    lines.append("- 收藏：`favorite.db`")
+    lines.append("- 表情包：`emoticon.db`")
+    lines.append("- 搜索：`chat_search_index.db` / `message_fts.db` / `*_fts.db`（不同版本/实现可能不同）")
+    lines.append("")
+
+    # Per DB
+    for db_name in sorted(databases.keys(), key=_db_sort_key):
+        # Skip duplicated details for message shards; only keep the last shard as representative.
+        if rep_message_db and re.match(r"^message_\d+$", str(db_name)) and str(db_name) != rep_message_db:
+            continue
+
+        db = databases.get(db_name) or {}
+        if not isinstance(db, dict):
+            continue
+
+        desc = db.get("description", "")
+        tables = db.get("tables") or {}
+        if not isinstance(tables, dict):
+            tables = {}
+
+        display_table_items = _fold_same_schema_tables_for_display(tables)
+        display_table_count = len(display_table_items)
+
+        lines.append(f"## {db_name}.db")
+        lines.append("")
+        lines.append(f"- 描述：{_md_escape_cell(desc)}")
+        if display_table_count != len(tables):
+            lines.append(f"- 表数量：{len(tables)}（同结构表折叠后展示 {display_table_count}）")
+        else:
+            lines.append(f"- 表数量：{len(tables)}")
+        lines.append("")
+
+        # Extra note for message shards
+        if re.match(r"^message_\d+$", db_name):
+            if rep_message_db and db_name == rep_message_db and len(all_message_db_names) > 1:
+                others = [n for n in all_message_db_names if n != rep_message_db]
+                # Keep it short; avoid blowing up the doc with too many names if there are lots of shards.
+                if len(others) <= 10:
+                    lines.append(f"本节仅展示最后一个分片 `{rep_message_db}.db` 的结构；其它分片结构通常一致：{', '.join([f'`{n}.db`' for n in others])}。")
+                else:
+                    lines.append(
+                        f"本节仅展示最后一个分片 `{rep_message_db}.db` 的结构；其它分片（{len(others)} 个）结构通常一致。"
+                    )
+            lines.append("说明：")
+            lines.append("- `Msg_*` 表组通常对应“每个联系人/会话一个表”，常见命名为 `Msg_{md5(wxid)}`。")
+            lines.append("- 可通过对 wxid 做 md5 计算定位具体会话表；或结合 `Name2Id`/`name2id` 映射表进行解析。")
+            lines.append("")
+            lines.append("示例（Python）：")
+            lines.append("")
+            lines.append("```python")
+            lines.append("import hashlib")
+            lines.append("")
+            lines.append("wxid = \"wxid_xxx\"")
+            lines.append("md5_hex = hashlib.md5(wxid.encode(\"utf-8\")).hexdigest()")
+            lines.append("table = f\"Msg_{md5_hex}\"")
+            lines.append("print(table)")
+            lines.append("```")
+            lines.append("")
+
+        # Tables
+        for table_name, table in display_table_items:
+            if not isinstance(table, dict):
+                continue
+
+            t_type = table.get("type", "table")
+            t_desc = table.get("description", "")
+
+            # Table header
+            display_table_name = _mask_hash_table_name(table_name)
+            lines.append(f"### {display_table_name}")
+            lines.append("")
+            if t_desc:
+                lines.append(f"- 描述：{_md_escape_cell(t_desc)}")
+            if t_type == "similar_group":
+                pat = table.get("pattern") or display_table_name
+                rep = table.get("representative_table")
+                table_count = table.get("table_count")
+                lines.append(f"- 类型：相似表组（pattern: `{_md_escape_cell(pat)}`）")
+                if table_count is not None:
+                    lines.append(f"- 表数量：{_md_escape_cell(table_count)}")
+                if rep:
+                    rep_s = str(rep)
+                    rep_masked = _mask_hash_table_name(rep_s)
+                    rep_note = "（已脱敏）" if rep_masked != rep_s else ""
+                    lines.append(f"- 代表表：`{_md_escape_cell(rep_masked)}`{rep_note}")
+
+                members = table.get("table_names") or table.get("tables")
+                if isinstance(members, list) and members:
+                    member_names = [str(x) for x in members]
+                    member_names = [_mask_hash_table_name(n) for n in member_names]
+                    if len(member_names) <= 20:
+                        show = member_names
+                        suffix = ""
+                    else:
+                        show = member_names[:10] + ["..."] + member_names[-5:]
+                        suffix = f"（共 {len(member_names)} 个）"
+                    parts = [f"`{_md_escape_cell(n)}`" if n != "..." else "..." for n in show]
+                    lines.append(f"- 包含表：{', '.join(parts)}{suffix}")
+            lines.append("")
+
+            fields = table.get("fields") or {}
+            if not isinstance(fields, dict) or not fields:
+                lines.append("_无字段信息_\n")
+                continue
+
+            lines.append("| 字段 | 类型 | 含义 | 备注 |")
+            lines.append("|---|---|---|---|")
+            for field_name in sorted(fields.keys()):
+                fm = fields.get(field_name) or {}
+                if not isinstance(fm, dict):
+                    fm = {}
+                f_type = fm.get("type", "")
+                meaning = fm.get("meaning", "")
+                notes = fm.get("notes", "")
+                lines.append(
+                    f"| `{_md_escape_cell(field_name)}` | `{_md_escape_cell(f_type)}` | {_md_escape_cell(meaning)} | {_md_escape_cell(notes)} |"
+                )
+            lines.append("")
+
+    # Appendices
+    message_types = cfg.get("message_types") or {}
+    if isinstance(message_types, dict) and message_types:
+        mt = _render_message_type_map(message_types)
+        if mt:
+            lines.append(mt)
+
+    friend_types = cfg.get("friend_types") or {}
+    if isinstance(friend_types, dict) and friend_types:
+        # friend_types in config usually uses string keys
+        items: list[tuple[int, str]] = []
+        for k, v in friend_types.items():
+            if k in {"_instructions", "examples"}:
+                continue
+            try:
+                items.append((int(str(k)), str(v)))
+            except Exception:
+                continue
+        items.sort(key=lambda x: x[0])
+
+        if items:
+            lines.append("## 联系人类型（friend_type）速查\n")
+            lines.append("| 值 | 含义 |\n|---:|---|\n")
+            for code, desc in items:
+                lines.append(f"| {code} | {_md_escape_cell(desc)} |")
+            lines.append("")
+
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="导出微信数据库字段配置为 Markdown 文档（单文件）")
+    parser.add_argument(
+        "--config",
+        default=str(ROOT / "wechat_db_config.json"),
+        help="wechat_db_config.json 路径（由 tools/generate_wechat_db_config.py 生成）",
+    )
+    parser.add_argument(
+        "--output",
+        default=str(ROOT / "docs" / "wechat_database_schema.md"),
+        help="Markdown 输出路径",
+    )
+    args = parser.parse_args()
+
+    cfg = Path(args.config)
+    if not cfg.exists():
+        raise FileNotFoundError(f"未找到配置文件: {cfg}，请先运行 tools/generate_wechat_db_config.py")
+
+    out = Path(args.output)
+    export_markdown(cfg, out)
+    print(f"[OK] 写出 Markdown: {out}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
@@ -14,6 +14,7 @@ import json
 import re
 from pathlib import Path
 from datetime import datetime
+import sys

 ROOT = Path(__file__).resolve().parents[1]
 TEMPLATE_PATH = ROOT / "wechat_db_config_template.json"
@@ -21,6 +22,10 @@ OUTPUT_MAIN = ROOT / "wechat_db_config.json"
 OUTPUT_DIR = ROOT / "output" / "configs"
 OUTPUT_COPY = OUTPUT_DIR / "wechat_db_config.generated.json"

+# 允许从 tools/ 目录运行时仍能 import 根目录模块
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
 # 尝试导入分析器以复用其启发式
 AnalyzerCls = None
 try:
@@ -33,19 +38,24 @@ except Exception:
 def build_db_descriptions() -> dict[str, str]:
    return {
        "message": "聊天记录核心数据库",
-        "message_3": "聊天消息分表数据库（示例或分片）",
+        # message_{n}.db 会在 fill_config 里按正则单独处理（分片/分表）
        "message_fts": "聊天消息全文索引数据库（FTS）",
        "message_resource": "消息资源索引数据库（图片/文件/视频等）",
        "contact": "联系人数据库（好友/群/公众号基础信息）",
        "session": "会话数据库（会话列表与未读统计）",
        "sns": "朋友圈数据库（动态与互动）",
        "favorite": "收藏数据库",
+        "favorite_fts": "收藏全文索引数据库（FTS）",
        "emoticon": "表情包数据库",
        "head_image": "头像数据数据库",
        "hardlink": "硬链接索引数据库（资源去重/快速定位）",
        "media_0": "媒体数据数据库（含语音SILK等）",
        "unspportmsg": "不支持消息数据库（客户端不支持的消息类型）",
        "general": "通用/系统数据库（新消息通知/支付等）",
+        "contact_fts": "联系人全文索引数据库（FTS）",
+        "chat_search_index": "（本项目生成）聊天记录全文检索索引库（FTS5，用于搜索）",
+        "bizchat": "公众号/企业微信相关数据库（会话/联系人等）",
+        "digital_twin": "（本项目生成）数字分身数据库（派生数据，非微信原始库）",
    }


@@ -172,6 +182,12 @@ KNOWN_FIELD_MEANINGS = {
    "c4": "FTS列c4（内部结构）",
    "c5": "FTS列c5（内部结构）",
    "c6": "FTS列c6（内部结构）",
+    "c7": "FTS列c7（内部结构）",
+    "c8": "FTS列c8（内部结构）",
+    "c9": "FTS列c9（内部结构）",
+    "c10": "FTS列c10（内部结构）",
+    "c11": "FTS列c11（内部结构）",
+    "c12": "FTS列c12（内部结构）",
    "sz": "FTS文档大小信息",
    "_rowid_": "SQLite内部行ID",

@@ -199,12 +215,483 @@ KNOWN_FIELD_MEANINGS = {
    "last_sender_display_name": "最后一条消息发送者显示名",
    "last_msg_ext_type": "最后一条消息扩展类型",

+    # 常见“Key-Value”配置表（多库复用）
+    "key": "键（Key-Value配置表）",
+    "valueint64": "整数值（int64）",
+    "valuedouble": "浮点值（double）",
+    "valuestdstr": "字符串值（std::string）",
+    "valueblob": "二进制值（blob）",
+    "k": "配置键（k）",
+    "v": "配置值（v）",
+
+    # 常见保留字段
+    "reserved0": "保留字段（reserved0）",
+    "reserved1": "保留字段（reserved1）",
+    "reserved2": "保留字段（reserved2）",
+    "reserved3": "保留字段（reserved3）",
+
+    # 版本/位标志
+    "version": "版本号（记录/结构版本，具体含义依表而定）",
+    "bit_flag": "位标志/开关（bit flags）",
+
+    # 本项目索引/缓存库常见字段
+    "render_type": "渲染类型（本项目定义：text/image/system/...）",
+    "db_stem": "来源数据库分片名（如 message_0）",
+    "table_name": "来源表名（如 Msg_xxx）",
+    "sender_username": "发送者username（解码后）",
+    "preview": "会话预览文本（用于会话列表展示）",
+    "built_at": "构建时间（Unix时间戳，秒）",
+    "tablename": "表名（tableName）",
+    "value": "值（value）",
+    "brand_user_name": "品牌/公众号username（brand_user_name）",
+
+    # 常见业务字段（命名自解释）
+    "ticket": "票据/验证ticket（ticket）",
+    "delete_table_name": "删除记录关联的消息表名（delete_table_name）",
+    "res_path": "资源路径（res_path）",
+    "biz_username": "公众号username（biz_username）",
+    "search_key": "搜索键/索引字段（search_key）",
+    "click_type": "点击/热词类型（click_type）",
+    "a_group_remark": "群备注（FTS检索字段：a_group_remark）",
+    "op_code": "操作码（op_code）",
+    "query": "查询关键词（query）",
+    "score": "评分/权重（score）",
+    "keyword": "关键词（keyword）",
+    "pay_load_": "payload/扩展数据（pay_load_）",
+    "bill_no": "账单号（bill_no）",
+    "session_title": "会话标题（session_title）",
+    "unread_stat": "未读统计字段（unread_stat）",
+    "ui_type": "UI类型/发布类型（ui_type）",
+    "error_type": "错误类型（error_type）",
+    "tips_content": "提示内容（tips_content）",
+    "record_content": "记录内容（record_content）",
+    "business_type": "业务类型（business_type）",
+    "access_content_key": "访问内容key（access_content_key）",
+    "access_content_type": "访问内容类型（access_content_type）",
+    "range_type": "范围类型（range_type）",
+    "message_local_type": "消息类型（message_local_type）",
+    "message_origin_source": "消息来源标识（message_origin_source）",
+
+    # 朋友圈（sns）常见拆分字段
+    "tid_heigh_bit": "tid 高位拆分字段（heigh_bit，字段名原样保留）",
+    "tid_low_bit": "tid 低位拆分字段（low_bit）",
+    "break_flag": "断点/分页标志（0/1；用于分页/增量拉取水位）",
+
    # WCDB 压缩控制
    "WCDB_CT_message_content": "WCDB压缩标记（message_content列）",
    "WCDB_CT_source": "WCDB压缩标记（source列）",
 }


+# 表级字段含义覆盖（优先级高于 KNOWN_FIELD_MEANINGS）
+# key: table_name.lower() ; value: { field_name.lower(): meaning }
+KNOWN_FIELD_MEANINGS_BY_TABLE: dict[str, dict[str, str]] = {
+    # contact.db
+    "contact": {
+        "id": "序号（通常与 name2id.rowid 对应）",
+        "username": "联系人的 wxid / 群聊 username（可唯一确定联系人）",
+        "local_type": "联系人类型：1=通讯录好友/公众号/已添加群聊；2=未添加到通讯录的群聊；3=群中的陌生人；5=企业微信好友；6=群聊中的陌生企业微信好友",
+        "alias": "微信号（微信里显示的微信号）",
+        "flag": "联系人标志位（需转二进制；常见：第7位星标，第12位置顶，第17位屏蔽朋友圈，第24位仅聊天）",
+        "head_img_md5": "头像md5（可通过 head_image.db 查询对应头像）",
+        "verify_flag": "认证标志（公众号/企业等；非0常表示公众号）",
+        "description": "描述字段（样本为空；用途待确认）",
+        "extra_buffer": "好友扩展信息（protobuf；包含性别/地区/签名等，本项目解析 gender/signature/country/province/city/source_scene）",
+        "chat_room_notify": "群消息通知相关设置（样本为0/1；疑似免打扰/通知开关，待确认）",
+        "is_in_chat_room": "群聊状态标记（样本为1/2；具体含义待确认）",
+        "chat_room_type": "群聊类型/标志（样本为0/2；具体含义待确认）",
+    },
+    "stranger": {
+        "id": "序号（通常与 name2id.rowid 对应）",
+        "username": "联系人的 wxid / 群聊 username",
+        "local_type": "联系人类型：1=通讯录好友/公众号/已添加群聊；2=未添加到通讯录的群聊；3=群中的陌生人；5=企业微信好友；6=群聊中的陌生企业微信好友",
+        "alias": "微信号（微信里显示的微信号）",
+        "flag": "联系人标志位（需转二进制；常见：第7位星标，第12位置顶，第17位屏蔽朋友圈，第24位仅聊天）",
+        "head_img_md5": "头像md5（可通过 head_image.db 查询对应头像）",
+        "verify_flag": "认证标志（公众号/企业等；非0常表示公众号）",
+        "description": "描述字段（样本为空；用途待确认）",
+        "extra_buffer": "好友扩展信息（protobuf；包含性别/地区/签名等，本项目解析 gender/signature/country/province/city/source_scene）",
+        "chat_room_notify": "群消息通知相关设置（样本为0/1；疑似免打扰/通知开关，待确认）",
+        "is_in_chat_room": "群聊状态标记（样本为1/2；具体含义待确认）",
+        "chat_room_type": "群聊类型/标志（样本为0/2；具体含义待确认）",
+    },
+    "biz_info": {
+        "id": "序号（与 name2id.rowid 对应，可唯一确定一个公众号）",
+        "username": "公众号username（原始 wxid/gh_xxx）",
+        "type": "公众号类型：1=公众号，0=订阅号（资料来源：万字长文）",
+        "accept_type": "接收类型（accept_type；含义待确认，样本常为0）",
+        "child_type": "子类型（child_type；含义待确认，样本常为0）",
+        "version": "版本号（含义待确认，样本常为0）",
+        "external_info": "公众号详细信息（常见 JSON；含底部菜单/交互配置等）",
+        "brand_info": "公众号品牌/菜单信息（常见 JSON：urls 等）",
+        "brand_list": "品牌列表/关联列表（格式待确认，可能为 JSON）",
+        "brand_flag": "品牌/能力标志位（含义待确认）",
+        "belong": "归属字段（含义待确认）",
+        "home_url": "主页链接（含义待确认）",
+    },
+    "chat_room": {
+        "id": "序号（与 name2id.rowid 对应）",
+        "username": "群聊的username（xxx@chatroom）",
+        "owner": "群主username",
+        "ext_buffer": "群成员username与群昵称（protobuf：ChatRoomData.members 等）",
+    },
+    "chat_room_info_detail": {
+        "room_id_": "序号（与 name2id.rowid 对应）",
+        "username_": "群聊的username（xxx@chatroom）",
+        "announcement_": "群公告（文本）",
+        "announcement_editor_": "群公告编辑者username",
+        "announcement_publish_time_": "群公告发布时间（时间戳）",
+        "chat_room_status_": "群状态/标志位（bitmask；样本常见 0x80000 等，具体位含义待确认）",
+        "xml_announcement_": "群公告（XML，可解析更多信息：图片/文件等）",
+        "ext_buffer_": "扩展信息（protobuf-like；样本长度较小，具体结构待确认）",
+    },
+    "chatroom_member": {
+        "room_id": "群聊ID（对应 name2id.rowid）",
+        "member_id": "群成员ID（对应 name2id.rowid）",
+    },
+    "contact_label": {
+        "label_id_": "标签ID",
+        "label_name_": "标签名称",
+        "sort_order_": "排序",
+    },
+
+    # message_*.db / biz_message_*.db
+    "msg_*": {
+        "local_id": "自增id（本地）",
+        "server_id": "服务端id（每条消息唯一）",
+        "local_type": "消息类型（local_type；低32位=type，高32位=sub_type；可用 (local_type & 0xFFFFFFFF) 与 (local_type >> 32) 拆分）",
+        "sort_seq": "排序字段（单会话内消息排序；样本≈create_time*1000）",
+        "real_sender_id": "发送者id（可通过 Name2Id.rowid 映射到 username）",
+        "create_time": "秒级时间戳",
+        "server_seq": "服务端接收顺序id（server_seq）",
+        "message_content": "消息内容：local_type=1 时为文本，其它类型多为 Zstandard 压缩后的XML/二进制",
+        "compress_content": "压缩后的内容（多见 Zstandard）",
+        "packed_info_data": "protobuf扩展信息（图片文件名/语音转文字/合并转发文件夹名等）",
+    },
+    "name2id": {
+        "is_session": "是否会话名标记（1=会话/聊天对象；0=其它映射，如群成员ID）",
+    },
+
+    # session.db
+    "sessiontable": {
+        "type": "会话类型（样本为0；枚举待确认）",
+        "status": "会话状态（样本为0；枚举待确认）",
+        "unread_first_pat_msg_local_id": "未读拍一拍消息的本地ID（样本为0；含义待确认）",
+        "unread_first_pat_msg_sort_seq": "未读拍一拍消息的排序序号（样本为0；含义待确认）",
+    },
+    "session_last_message": {
+        "username": "会话username",
+        "sort_seq": "最后一条消息sort_seq",
+        "local_id": "最后一条消息local_id",
+        "create_time": "最后一条消息create_time（秒级时间戳）",
+        "local_type": "最后一条消息local_type",
+        "sender_username": "最后一条消息发送者username",
+        "preview": "最后一条消息预览文本（用于会话列表）",
+        "db_stem": "来源消息库分片名（如 message_0）",
+        "table_name": "来源消息表名（如 Msg_xxx）",
+        "built_at": "构建时间（Unix时间戳，秒）",
+    },
+
+    # 本项目 chat_search_index.db
+    "message_fts": {
+        "text": "可检索文本（索引内容）",
+        "render_type": "渲染类型（text/system/image/voice/video/emoji/...，本项目定义）",
+        "db_stem": "来源消息库分片名（如 message_0）",
+        "table_name": "来源消息表名（如 Msg_xxx）",
+        "sender_username": "发送者username（解码后）",
+    },
+
+    # emoticon.db
+    "knonstoreemoticontable": {
+        "type": "表情类型（样本均为3；枚举含义待确认）",
+        "caption": "表情说明/标题（caption）",
+        "product_id": "表情包/产品ID（product_id）",
+        "aes_key": "AES密钥（用于CDN下载解密）",
+        "auth_key": "鉴权key（CDN下载）",
+        "extern_md5": "外部资源md5（extern_md5）",
+    },
+    "kstoreemoticonpackagetable": {
+        "package_id_": "表情包ID（package_id）",
+        "package_name_": "表情包名称",
+        "payment_status_": "支付状态（payment_status）",
+        "download_status_": "下载状态（download_status）",
+        "install_time_": "安装时间（时间戳）",
+        "remove_time_": "移除时间（时间戳）",
+        "sort_order_": "排序",
+        "introduction_": "简介（introduction）",
+        "full_description_": "完整描述（full_description）",
+        "copyright_": "版权信息",
+        "author_": "作者信息",
+        "store_icon_url_": "商店图标URL",
+        "panel_url_": "面板/详情页URL",
+    },
+    "kstoreemoticonfilestable": {
+        "package_id_": "表情包ID（package_id）",
+        "md5_": "表情md5",
+        "type_": "表情类型（type）",
+        "sort_order_": "排序",
+        "emoticon_size_": "表情文件大小（字节）",
+        "emoticon_offset_": "表情文件偏移（用于包内定位）",
+        "thumb_size_": "缩略图大小（字节）",
+        "thumb_offset_": "缩略图偏移（用于包内定位）",
+    },
+
+    # favorite.db
+    "fav_db_item": {
+        "version": "版本号（收藏条目结构/内容版本；样本为87）",
+        "fromusr": "来源用户username（收藏来源）",
+        "realchatname": "来源群聊username（若收藏来源于群聊）",
+        "upload_error_code": "上传错误码",
+        "trans_res_error_code": "资源转换错误码（trans_res_error_code）",
+    },
+
+    # general.db
+    "ilink_voip": {
+        "wx_chatroom_": "群聊username（xxx@chatroom）",
+        "millsecond_": "毫秒时间戳/时间标记（字段名推断）",
+        "group_id_": "ILink group_id（字段名推断）",
+        "room_id_": "房间ID（字段名推断）",
+        "room_key_": "房间key（字段名推断）",
+        "route_id_": "路由ID（字段名推断）",
+        "voice_status_": "通话状态（字段名推断）",
+        "talker_create_user_": "发起者username（字段名推断）",
+        "not_friend_user_list_": "非好友成员列表（字段名推断）",
+        "members_": "成员列表（字段名推断）",
+        "is_ilink_": "是否ilink通话（字段名推断）",
+        "ever_quit_chatroom_": "是否曾退出群聊（字段名推断）",
+    },
+    "fmessagetable": {
+        "user_name_": "用户名（好友验证/陌生人会话用户名）",
+        "type_": "消息类型（好友验证/系统消息；样本为37）",
+        "timestamp_": "时间戳",
+        "encrypt_user_name_": "加密用户名",
+        "content_": "内容（验证消息/系统提示等）",
+        "is_sender_": "是否发送方（is_sender）",
+        "ticket_": "票据/验证ticket",
+        "scene_": "来源场景码（scene）",
+        "fmessage_detail_buf_": "详细信息（protobuf-like；包含验证文案/来源等信息）",
+    },
+    "handoff_remind_v0": {
+        "item_id": "条目ID（item_id）",
+        "head_icon": "图标（URL/资源标识）",
+        "title": "标题",
+        "desc_type": "描述类型（desc_type）",
+        "create_time": "创建时间（时间戳）",
+        "start_time": "开始时间（时间戳）",
+        "expire_time": "过期时间（时间戳）",
+        "biz_type": "业务类型（biz_type）",
+        "version": "版本号（version）",
+        "url": "跳转URL",
+        "extra_info": "扩展信息（extra_info）",
+    },
+    "transfertable": {
+        "transfer_id": "转账ID（transfer_id）",
+        "transcation_id": "交易ID（transaction_id，原字段拼写保留）",
+        "message_server_id": "关联消息server_id",
+        "second_message_server_id": "关联第二条转账消息server_id（可在 message_*.db::Msg_* 表的 server_id 对应到）",
+        "session_name": "会话username",
+        "pay_sub_type": "支付子类型（pay_sub_type）",
+        "pay_receiver": "收款方username",
+        "pay_payer": "付款方username",
+        "begin_transfer_time": "转账开始时间（时间戳）",
+        "last_modified_time": "最后修改时间（时间戳）",
+        "invalid_time": "失效时间（时间戳）",
+        "last_update_time": "最后更新时间（时间戳）",
+        "delay_confirm_flag": "延迟确认标志（delay_confirm_flag）",
+        "bubble_clicked_flag": "气泡点击标志（bubble_clicked_flag）",
+    },
+
+    # bizchat.db
+    "chat_group": {
+        "brand_user_name": "品牌/公众号username（brand_user_name）",
+        "bit_flag": "位标志/开关（bit_flag）",
+        "chat_name": "群组名称（chat_name）",
+        "user_list": "成员列表（常见为 ; 分隔的 user_id/username 列表；待确认）",
+        "reserved0": "保留字段（reserved0）",
+        "reserved1": "保留字段（reserved1）",
+        "reserved2": "保留字段（reserved2）",
+        "reserved3": "保留字段（reserved3）",
+    },
+    "user_info": {
+        "brand_user_name": "品牌/公众号username（brand_user_name）",
+        "bit_flag": "位标志/开关（bit_flag）",
+        "reserved0": "保留字段（reserved0）",
+        "reserved1": "保留字段（reserved1）",
+        "reserved2": "保留字段（reserved2）",
+        "reserved3": "保留字段（reserved3）",
+    },
+
+    # sns.db
+    "snsmessage_tmp3": {
+        "from_username": "来源用户username（评论/点赞发起者）",
+        "from_nickname": "来源用户昵称（评论/点赞发起者）",
+        "to_username": "目标用户username（被回复/被@的人）",
+        "to_nickname": "目标用户昵称（被回复/被@的人）",
+        "comment_flag": "评论标志位（样本为0；具体 bit 含义待确认）",
+    },
+    "snsadtimeline": {
+        "ad_content": "广告内容（ad_content，格式待确认）",
+        "remind_source_info": "提醒来源信息（remind_source_info，格式待确认）",
+        "remind_self_info": "提醒自身信息（remind_self_info，格式待确认）",
+        "extra_data": "扩展数据（extra_data，格式待确认）",
+    },
+
+    # unspportmsg.db
+    "unsupportmessage": {
+        "from_user": "发送者username",
+        "to_user": "接收者username",
+        "msg_source": "消息来源附加信息（msg_source）",
+    },
+
+    # contact.db
+    "openim_wording": {
+        "wording": "文案/提示语（wording）",
+        "pinyin": "拼音（pinyin）",
+    },
+
+    # message_*.db / biz_message_*.db (WCDB)
+    "wcdb_builtin_compression_record": {
+        "tablename": "表名（tableName）",
+        "columns": "被WCDB压缩的列列表（columns）",
+    },
+
+    # general.db
+    "revokemessage": {
+        "to_user_name": "会话username（撤回消息所在会话）",
+        "message_type": "消息类型（local_type）",
+        "at_user_list": "@用户列表（字段名推断）",
+    },
+    "wcfinderlivestatus": {
+        "finder_username": "视频号作者username（finder_username）",
+        "charge_flag": "是否付费/收费标志（charge_flag）",
+    },
+    "new_tips": {
+        "disable": "禁用标志（disable）",
+        "new_tips_content": "提示内容（new_tips_content）",
+    },
+    "redenvelopetable": {
+        "sender_user_name": "红包发送者username",
+        "hb_type": "红包类型（hb_type）",
+    },
+    "wacontact": {
+        "external_info": "外部信息（JSON；常见包含 BindWxaInfo/RegisterSource/WxaAppDynamic 等）",
+        "contact_pack_data": "联系人打包数据（protobuf-like；常含昵称/品牌名等）",
+        "wx_app_opt": "小程序/应用选项（wx_app_opt；位标志/开关；样本为0）",
+    },
+
+    # emoticon.db
+    "kstoreemoticoncaptionstable": {
+        "package_id_": "表情包ID（package_id）",
+        "md5_": "表情md5",
+        "language_": "语言（language）",
+        "caption_": "文案/标题（caption）",
+    },
+}
+
+
+KNOWN_TABLE_DESCRIPTIONS: dict[str, str] = {
+    # contact.db
+    "biz_info": "公众号信息表（公众号类型/菜单/品牌信息等）",
+    "chat_room": "群聊基础信息表（群主/成员列表等扩展在 ext_buffer）",
+    "chat_room_info_detail": "群聊详细信息表（群公告/群状态等）",
+    "chatroom_member": "群聊成员映射表（room_id ↔ member_id）",
+    "contact": "联系人核心表（好友/群/公众号等基础信息）",
+    "contact_label": "联系人标签表（标签ID与名称）",
+    "name2id": "用户名（wxid/群id@chatroom 等）到内部数值ID映射表",
+    "encrypt_name2id": "加密用户名到内部数值ID映射表",
+    "stranger": "陌生人/临时会话信息表",
+    "ticket_info": "票据/会话票据信息表（用途待进一步确认）",
+    "stranger_ticket_info": "陌生人票据信息表（用途待进一步确认）",
+    "oplog": "操作/同步日志表（增量同步相关）",
+    "openim_appid": "OpenIM 应用ID表（企业微信/互通相关）",
+    "openim_acct_type": "OpenIM 账号类型表",
+    "openim_wording": "OpenIM 文案/提示语表",
+
+    # session.db
+    "sessiontable": "会话列表表（会话展示/未读/置顶/隐藏等）",
+    "sessiondeletetable": "会话删除记录表",
+    "sessionunreadlisttable_1": "未读会话列表表（分表）",
+    "sessionunreadstattable_1": "未读统计表（分表）",
+    "sessionnocontactinfotable": "会话表（无联系人信息的会话）",
+    "session_last_message": "会话最后一条消息缓存/索引表（版本/实现差异）",
+
+    # message_*.db / biz_message_*.db
+    "timestamp": "时间戳/增量同步辅助表",
+    "deleteinfo": "删除消息记录表（删除/撤回相关）",
+    "deleteresinfo": "删除资源记录表（资源删除相关）",
+    "sendinfo": "发送相关信息表（发送状态/队列等）",
+    "historysysmsginfo": "历史系统消息表",
+    "historyaddmsginfo": "历史新增消息表",
+
+    # message_resource.db
+    "chatname2id": "会话名 → 会话ID 映射表（资源库维度）",
+    "sendername2id": "发送者名 → 发送者ID 映射表（资源库维度）",
+    "messageresourceinfo": "消息资源索引表（按消息/会话定位资源）",
+    "messageresourcedetail": "消息资源明细表（md5/路径/大小等）",
+    "ftsrange": "FTS 范围信息表（搜索/索引辅助）",
+    "ftsdeleteinfo": "FTS 删除记录表（索引维护）",
+
+    # media_0.db
+    "voiceinfo": "语音数据表（voice_data 等）",
+
+    # hardlink.db
+    "db_info": "WCDB Key-Value 元信息表（FTS构建状态/版本/扫描时间等）",
+    "dir2id": "目录 → ID 映射表（硬链接索引）",
+    "image_hardlink_info_v4": "图片硬链接索引表（v4）",
+    "file_hardlink_info_v4": "文件硬链接索引表（v4）",
+    "video_hardlink_info_v4": "视频硬链接索引表（v4）",
+    "file_checkpoint_v4": "文件索引检查点（增量）",
+    "video_checkpoint_v4": "视频索引检查点（增量）",
+    "talker_checkpoint_v4": "会话索引检查点（增量）",
+
+    # *_fts.db / message_fts.db
+    "table_info": "WCDB Key-Value 元信息表（索引范围/水位/时间戳等）",
+
+    # head_image.db
+    "head_image": "头像缓存表（头像 md5/二进制缩略图等）",
+
+    # favorite.db
+    "buff": "WCDB Key-Value 缓冲/配置表（收藏等模块的缓存）",
+    "fav_db_item": "收藏条目表",
+    "fav_tag_db_item": "收藏标签表",
+    "fav_bind_tag_db_item": "收藏条目与标签绑定表",
+
+    # emoticon.db
+    "kcustomemoticonordertable": "自定义表情排序表（md5 列表）",
+    "kexpressrecentuseeemoticontable": "最近使用表情记录（Key-Value）",
+    "knonstoreemoticontable": "非商店表情表（用户收藏/外部表情资源；含CDN下载信息）",
+    "kstoreemoticonpackagetable": "商店表情包信息表（package 元数据）",
+    "kstoreemoticoncaptionstable": "商店表情文案表（多语言 caption）",
+
+    # unspportmsg.db
+    "unsupportmessage": "不支持消息表（PC端无法直接展示的消息类型）",
+
+    # bizchat.db
+    "chat_group": "BizChat 群组表（企业微信/公众号群组信息）",
+    "user_info": "BizChat 用户表（企业微信/公众号用户信息）",
+    "my_user_info": "BizChat 当前账号映射表（brand_user_name ↔ user_id）",
+
+    # general.db
+    "forwardrecent": "最近转发会话记录表（username/时间）",
+    "transfertable": "转账记录表（转账ID/关联消息/状态等）",
+    "redenvelopetable": "红包记录表（关联消息/状态等）",
+    "ilink_voip": "iLink/群通话相关表（房间ID/成员/状态等）",
+    "fmessagetable": "好友验证/陌生人消息表（FMessage）",
+    "handoff_remind_v0": "跨设备接力/提醒项表（handoff_remind_v0）",
+    "biz_pay_status": "公众号文章付费状态表（url_id/is_paid 等）",
+    "biz_subscribe_status": "公众号订阅模板状态表（template_id/is_subscribe）",
+    "new_tips": "新提示/新功能提示表",
+    "reddot": "小红点提示表",
+    "reddot_record": "小红点记录表",
+    "wcfinderlivestatus": "视频号直播状态表",
+    "teenager_apply_access_agree_info": "青少年模式访问同意记录表",
+
+    # chat_search_index.db（本项目生成）
+    "meta": "索引元数据表（schema_version/构建时间等）",
+    "message_fts": "全文索引表（fts5，用于搜索）",
+}
+
+
 def simple_heuristic(field_name: str, table_name: str) -> str:
    """简易兜底启发式，避免完全空白"""
    f = field_name.lower()
@@ -243,10 +730,17 @@ def simple_heuristic(field_name: str, table_name: str) -> str:


 def compute_field_meaning(analyzer, table_name: str, field_name: str) -> str:
-    # 优先精确已知映射
+    lt = table_name.lower()
+    lf = field_name.lower()
+
+    # 1) 表级覆盖优先
+    tmap = KNOWN_FIELD_MEANINGS_BY_TABLE.get(lt)
+    if tmap and lf in tmap:
+        return tmap[lf]
+
+    # 2) 全局精确映射
    if field_name in KNOWN_FIELD_MEANINGS:
        return KNOWN_FIELD_MEANINGS[field_name]
-    lf = field_name.lower()
    if lf in KNOWN_FIELD_MEANINGS:
        return KNOWN_FIELD_MEANINGS[lf]

@@ -266,13 +760,44 @@ def compute_field_meaning(analyzer, table_name: str, field_name: str) -> str:


 def guess_table_desc(analyzer, table_name: str) -> str:
+    # 简易猜测（优先命中已知表名）
+    tl = table_name.lower()
+
+    # 已知表名（大小写不敏感）
+    if tl in KNOWN_TABLE_DESCRIPTIONS:
+        return KNOWN_TABLE_DESCRIPTIONS[tl]
+
+    # SQLite / WCDB 内置
+    if tl == "sqlite_sequence":
+        return "SQLite 自增序列表"
+    if tl.startswith("wcdb"):
+        return "WCDB 内置表（压缩/元数据等）"
+
+    # FTS 内部表（多为 *_data/_idx/_config/_content/_docsize/_aux）
+    if "fts" in tl:
+        if tl.endswith("_data"):
+            return "全文检索（FTS）内部数据表"
+        if tl.endswith("_idx"):
+            return "全文检索（FTS）内部索引表"
+        if tl.endswith("_config"):
+            return "全文检索（FTS）内部配置表"
+        if tl.endswith("_content"):
+            return "全文检索（FTS）内部内容表"
+        if tl.endswith("_docsize"):
+            return "全文检索（FTS）内部文档长度表"
+        if tl.endswith("_aux") or "_aux_" in tl:
+            return "全文检索（FTS）辅助表"
+        return "全文检索（FTS）表/索引表"
+
+    # 借助分析器的启发式（如果可用，且不是“未知功能表”）
    if analyzer is not None:
        try:
-            return analyzer.guess_table_function(table_name)
+            guessed = analyzer.guess_table_function(table_name)
+            if isinstance(guessed, str) and guessed.strip() and guessed.strip() != "未知功能表":
+                return guessed.strip()
        except Exception:
            pass
-    # 简易猜测
-    tl = table_name.lower()
+
    if tl == "msg" or tl.startswith("msg_"):
        return "某会话的消息表（聊天消息数据）"
    if "name2id" in tl:
@@ -281,10 +806,18 @@ def guess_table_desc(analyzer, table_name: str) -> str:
        return "联系人/群聊信息表"
    if "session" in tl:
        return "会话信息/未读统计表"
-    if "fts" in tl:
-        return "全文检索（FTS）内部表"
    if "resource" in tl:
        return "消息资源/附件索引表"
+    if "voice" in tl:
+        return "语音相关数据表"
+    if "image" in tl or "img" in tl:
+        return "图片相关数据表"
+    if "video" in tl:
+        return "视频相关数据表"
+    if "file" in tl:
+        return "文件相关数据表"
+    if "sns" in tl:
+        return "朋友圈相关数据表"
    return "未知功能表"


@@ -301,13 +834,38 @@ def fill_config(template: dict) -> dict:
    # 数据库描述补齐
    db_desc_map = build_db_descriptions()

+    def guess_db_desc(db_name: str) -> str:
+        # 1) 精确映射优先
+        if db_name in db_desc_map:
+            return db_desc_map[db_name]
+
+        # 2) 常见分片/变体：message_{n}.db
+        m = re.match(r"^message_(\d+)$", db_name)
+        if m:
+            return f"聊天记录数据库分片（message_{m.group(1)}.db）"
+
+        # 3) 公众号/企业微信消息库：biz_message_{n}.db（结构通常同 message_{n}.db）
+        m = re.match(r"^biz_message_(\d+)$", db_name)
+        if m:
+            return f"公众号消息记录数据库（biz_message_{m.group(1)}.db，结构通常同 message_{m.group(1)}.db）"
+
+        # 4) FTS/索引类库：*_fts.db
+        if db_name.endswith("_fts"):
+            return "全文索引数据库（FTS）"
+
+        # 5) 退化到 base 前缀
+        base = db_name.split("_", 1)[0]
+        if base in db_desc_map:
+            return db_desc_map[base]
+
+        return "未知用途数据库"
+
    databases = template.get("databases", {})
    for db_name, db in databases.items():
        if isinstance(db, dict):
            # 数据库级描述
            if not db.get("description"):
-                # 用已知映射或尝试推断
-                db["description"] = db_desc_map.get(db_name, db.get("description", "")) or "未知用途数据库"
+                db["description"] = guess_db_desc(db_name)

            # 遍历表
            tables = db.get("tables", {})
@@ -378,4 +936,4 @@ def main():


 if __name__ == "__main__":
-    main()
+    main()
@@ -0,0 +1,122 @@
+// Generate WeChat/WeFlow WxIsaac64 keystream via WeFlow's WASM module.
+//
+// Usage:
+//   node tools/weflow_wasm_keystream.js <key> <size>
+//
+// Prints a base64-encoded keystream to stdout (no extra logs).
+
+const fs = require('fs')
+const path = require('path')
+const vm = require('vm')
+
+function usageAndExit() {
+  process.stderr.write('Usage: node tools/weflow_wasm_keystream.js <key> <size>\\n')
+  process.exit(2)
+}
+
+const key = String(process.argv[2] || '').trim()
+const size = Number(process.argv[3] || 0)
+
+if (!key || !Number.isFinite(size) || size <= 0) usageAndExit()
+
+const basePath = path.join(__dirname, '..', 'WeFlow', 'electron', 'assets', 'wasm')
+const wasmPath = path.join(basePath, 'wasm_video_decode.wasm')
+const jsPath = path.join(basePath, 'wasm_video_decode.js')
+
+if (!fs.existsSync(wasmPath) || !fs.existsSync(jsPath)) {
+  process.stderr.write(`WeFlow WASM assets not found: ${basePath}\\n`)
+  process.exit(1)
+}
+
+const wasmBinary = fs.readFileSync(wasmPath)
+const jsContent = fs.readFileSync(jsPath, 'utf8')
+
+let capturedKeystream = null
+let resolveInit
+let rejectInit
+const initPromise = new Promise((res, rej) => {
+  resolveInit = res
+  rejectInit = rej
+})
+
+const mockGlobal = {
+  console: { log: () => {}, error: () => {} }, // keep stdout clean
+  Buffer,
+  Uint8Array,
+  Int8Array,
+  Uint16Array,
+  Int16Array,
+  Uint32Array,
+  Int32Array,
+  Float32Array,
+  Float64Array,
+  BigInt64Array,
+  BigUint64Array,
+  Array,
+  Object,
+  Function,
+  String,
+  Number,
+  Boolean,
+  Error,
+  Promise,
+  require,
+  process,
+  setTimeout,
+  clearTimeout,
+  setInterval,
+  clearInterval,
+}
+
+mockGlobal.Module = {
+  onRuntimeInitialized: () => resolveInit(),
+  wasmBinary,
+  print: () => {},
+  printErr: () => {},
+}
+
+mockGlobal.self = mockGlobal
+mockGlobal.self.location = { href: jsPath }
+mockGlobal.WorkerGlobalScope = function () {}
+mockGlobal.VTS_WASM_URL = `file://${wasmPath}`
+
+mockGlobal.wasm_isaac_generate = (ptr, n) => {
+  const buf = new Uint8Array(mockGlobal.Module.HEAPU8.buffer, ptr, n)
+  capturedKeystream = new Uint8Array(buf) // copy view
+}
+
+try {
+  const context = vm.createContext(mockGlobal)
+  new vm.Script(jsContent, { filename: jsPath }).runInContext(context)
+} catch (e) {
+  rejectInit(e)
+}
+
+;(async () => {
+  try {
+    await initPromise
+
+    if (!mockGlobal.Module.WxIsaac64 && mockGlobal.Module.asm && mockGlobal.Module.asm.WxIsaac64) {
+      mockGlobal.Module.WxIsaac64 = mockGlobal.Module.asm.WxIsaac64
+    }
+    if (!mockGlobal.Module.WxIsaac64) {
+      throw new Error('WxIsaac64 not found in WASM module')
+    }
+
+    capturedKeystream = null
+    const isaac = new mockGlobal.Module.WxIsaac64(key)
+    isaac.generate(size)
+    if (isaac.delete) isaac.delete()
+
+    if (!capturedKeystream) throw new Error('Failed to capture keystream')
+
+    const out = Buffer.from(capturedKeystream)
+    // Match WeFlow worker logic: reverse the captured Uint8Array.
+    out.reverse()
+    process.stdout.write(out.toString('base64'))
+  } catch (e) {
+    process.stderr.write(String(e && e.stack ? e.stack : e) + '\\n')
+    process.exit(1)
+  }
+})()
+
@@ -866,7 +866,7 @@ wheels = [

 [[package]]
 name = "wechat-decrypt-tool"
-version = "0.2.1"
+version = "1.3.0"
 source = { editable = "." }
 dependencies = [
    { name = "aiofiles" },