diff --git a/admin.php b/admin.php
index df4d036..6a393a8 100644
--- a/admin.php
+++ b/admin.php
@@ -12,6 +12,7 @@
  * 入口：/feedback/admin.php
  */
 require __DIR__ . '/lib/bootstrap.php';
+require __DIR__ . '/lib/admin_taxonomy.php';
 
 $pdo = fb_db();
 
@@ -93,7 +94,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['act'])) {
         $act = (string)$_POST['act'];
         $t   = fb_admin_thread($pdo, $id);
 
-        if (!$t && $act !== 'settings' && $act !== 'password') {
+        // 这些动作不针对某一条反馈（不依赖 $t），单独放行
+        $noThread = in_array($act, ['settings', 'password'], true)
+                 || fb_admin_is_taxonomy_act($act);
+
+        if (!$t && !$noThread) {
             $msg = '问题不存在。';
             $msgType = 'error';
 
@@ -182,6 +187,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['act'])) {
             fb_mod_log('delete', $id, '删除问题：' . fb_excerpt((string)$t['title'], 40));
             $msg = '#' . $id . ' 已删除。';
 
+        } elseif (fb_admin_is_taxonomy_act($act)) {
+            list($msg, $msgType) = fb_admin_taxonomy_action($pdo, $act, $_POST);
+
         } elseif ($act === 'settings') {
             $msg = fb_admin_save_settings();
 
@@ -300,7 +308,7 @@ function fb_admin_save_settings() {
  * 页面
  * ================================================================== */
 $tab = (string)(isset($_GET['tab']) ? $_GET['tab'] : 'pending');
-if (!in_array($tab, ['pending', 'all', 'thread', 'settings', 'log'], true)) { $tab = 'pending'; }
+if (!in_array($tab, ['pending', 'all', 'thread', 'taxonomy', 'statuses', 'settings', 'log'], true)) { $tab = 'pending'; }
 
 fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
 ?>
@@ -315,6 +323,8 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
 <nav class="tabs">
   <a class="tab<?php echo $tab === 'pending' ? ' on' : ''; ?>" href="admin.php?tab=pending">待审核</a>
   <a class="tab<?php echo $tab === 'all' ? ' on' : ''; ?>" href="admin.php?tab=all">全部问题</a>
+  <a class="tab<?php echo $tab === 'taxonomy' ? ' on' : ''; ?>" href="admin.php?tab=taxonomy">软件与分类</a>
+  <a class="tab<?php echo $tab === 'statuses' ? ' on' : ''; ?>" href="admin.php?tab=statuses">处理状态</a>
   <a class="tab<?php echo $tab === 'settings' ? ' on' : ''; ?>" href="admin.php?tab=settings">站点设置</a>
   <a class="tab<?php echo $tab === 'log' ? ' on' : ''; ?>" href="admin.php?tab=log">操作日志</a>
 </nav>
@@ -343,9 +353,12 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
   $visF  = (string)(isset($_GET['vis']) ? $_GET['vis'] : '');
   $catF  = (string)(isset($_GET['cat']) ? $_GET['cat'] : '');
   $qF    = trim((string)(isset($_GET['q']) ? $_GET['q'] : ''));
+  $swF   = isset($_GET['sw']) ? (int)$_GET['sw'] : 0;
+  $cidF  = isset($_GET['cid']) ? (int)$_GET['cid'] : 0;
   if ($stF !== '')  { $where[] = 'status = ?';   $args[] = $stF; }
   if ($visF === '1' || $visF === '0') { $where[] = 'visible = ?'; $args[] = (int)$visF; }
-  if ($catF !== '') { $where[] = 'category = ?'; $args[] = $catF; }
+  if ($swF > 0)     { $where[] = 'software_id = ?'; $args[] = $swF; }
+  if ($cidF > 0)    { $where[] = 'category_id = ?'; $args[] = $cidF; }
   if ($qF !== '')   { $where[] = '(title LIKE ? OR body LIKE ?)'; $args[] = '%' . $qF . '%'; $args[] = '%' . $qF . '%'; }
   $wSql = $where ? ('WHERE ' . implode(' AND ', $where)) : '';
 
@@ -364,17 +377,29 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
   <form class="filters" method="get" action="admin.php">
     <input type="hidden" name="tab" value="all">
     <input type="text" name="q" value="<?php echo e($qF); ?>" placeholder="搜索标题或正文">
+    <select name="sw" onchange="this.form.submit()">
+      <option value="0">全部软件</option>
+      <?php foreach (fb_softwares(false) as $sw1): ?>
+        <option value="<?php echo (int)$sw1['id']; ?>"<?php echo $swF === (int)$sw1['id'] ? ' selected' : ''; ?>><?php echo e((string)$sw1['name']); ?></option>
+      <?php endforeach; ?>
+    </select>
     <select name="status">
       <option value="">全部状态</option>
-      <?php foreach (fb_statuses() as $k => $label): ?>
+      <?php foreach (fb_status_keys() as $k => $label): ?>
         <option value="<?php echo e($k); ?>"<?php echo $stF === $k ? ' selected' : ''; ?>><?php echo e($label); ?></option>
       <?php endforeach; ?>
     </select>
-    <select name="cat">
-      <option value="">全部分类</option>
-      <?php foreach (fb_categories() as $k => $label): ?>
-        <option value="<?php echo e($k); ?>"<?php echo $catF === $k ? ' selected' : ''; ?>><?php echo e($label); ?></option>
-      <?php endforeach; ?>
+    <select name="cid">
+      <option value="0">全部分类</option>
+      <?php
+      // 选了某个软件就只列它的分类；否则把所有软件的分类按软件分组列出
+      $catSwList = $swF > 0 ? [fb_software($swF)] : fb_softwares(false);
+      foreach ($catSwList as $csw1):
+          if (!$csw1) { continue; }
+          foreach (fb_categories((int)$csw1['id'], false) as $c1):
+      ?>
+        <option value="<?php echo (int)$c1['id']; ?>"<?php echo $cidF === (int)$c1['id'] ? ' selected' : ''; ?>><?php echo e(($swF > 0 ? '' : (string)$csw1['name'] . ' · ') . (string)$c1['name']); ?></option>
+      <?php endforeach; endforeach; ?>
     </select>
     <select name="vis">
       <option value="">公开与否不限</option>
@@ -437,7 +462,12 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
 
     <div class="card-form" style="margin:0 0 16px">
       <div class="item-top">
-        <span class="badge cat"><?php echo e(fb_category_label($t['category'])); ?></span>
+        <?php
+          $dSw  = !empty($t['software_id']) ? fb_software((int)$t['software_id']) : null;
+          $dCat = !empty($t['category_id']) ? fb_category((int)$t['category_id']) : null;
+        ?>
+        <?php if ($dSw): ?><span class="badge sw"><?php echo e((string)$dSw['name']); ?></span><?php endif; ?>
+        <?php if ($dCat): ?><span class="badge cat"><?php echo e((string)$dCat['name']); ?></span><?php endif; ?>
         <span class="badge st st-<?php echo e($t['status']); ?>"><?php echo e(fb_status_label($t['status'])); ?></span>
         <span class="item-title"><?php echo e($t['title']); ?></span>
         <span class="item-id">#<?php echo (int)$t['id']; ?></span>
@@ -469,6 +499,40 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
       </div>
     <?php endforeach; ?>
 
+    <h2 style="margin:24px 0 10px">归属</h2>
+    <form method="post" action="admin.php?tab=thread&amp;id=<?php echo (int)$id; ?>" class="card-form">
+      <input type="hidden" name="csrf" value="<?php echo e(fb_csrf_token()); ?>">
+      <input type="hidden" name="id" value="<?php echo (int)$id; ?>">
+      <p class="muted" style="margin:0 0 10px;font-size:13.5px">
+        挂错软件或分类时在这里改正。换软件后分类选项会跟着变，需重新选择。
+      </p>
+      <div class="row2">
+        <label class="field">
+          <span>所属软件</span>
+          <select name="software_id" onchange="location.href='admin.php?tab=thread&amp;id=<?php echo (int)$id; ?>&amp;sw='+this.value">
+            <?php foreach (fb_softwares(false) as $m1): ?>
+              <option value="<?php echo (int)$m1['id']; ?>"<?php echo (int)(isset($t['software_id']) ? $t['software_id'] : 0) === (int)$m1['id'] ? ' selected' : ''; ?>><?php echo e((string)$m1['name']); ?></option>
+            <?php endforeach; ?>
+          </select>
+        </label>
+        <label class="field">
+          <span>分类</span>
+          <select name="category_id">
+            <option value="0">（不指定）</option>
+            <?php
+              $mvSw = isset($_GET['sw']) ? (int)$_GET['sw']
+                    : (int)(isset($t['software_id']) ? $t['software_id'] : 0);
+              if ($mvSw <= 0) { $d0 = fb_default_software(); $mvSw = $d0 ? (int)$d0['id'] : 0; }
+              foreach (fb_categories($mvSw, false) as $m2):
+            ?>
+              <option value="<?php echo (int)$m2['id']; ?>"<?php echo (int)(isset($t['category_id']) ? $t['category_id'] : 0) === (int)$m2['id'] ? ' selected' : ''; ?>><?php echo e((string)$m2['name']); ?></option>
+            <?php endforeach; ?>
+          </select>
+        </label>
+      </div>
+      <button class="btn" name="act" value="th_move" type="submit">保存归属</button>
+    </form>
+
     <h2 style="margin:24px 0 10px">以官方身份回复</h2>
     <form method="post" action="admin.php?tab=thread&amp;id=<?php echo (int)$id; ?>" class="card-form">
       <input type="hidden" name="csrf" value="<?php echo e(fb_csrf_token()); ?>">
@@ -481,7 +545,7 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
         <span>同时把状态改为</span>
         <select name="status">
           <option value="">（不改）</option>
-          <?php foreach (fb_statuses() as $k => $label): ?>
+          <?php foreach (fb_status_keys() as $k => $label): ?>
             <option value="<?php echo e($k); ?>"><?php echo e($label); ?></option>
           <?php endforeach; ?>
         </select>
@@ -499,7 +563,7 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
         <label class="field">
           <span>处理状态</span>
           <select name="status">
-            <?php foreach (fb_statuses() as $k => $label): ?>
+            <?php foreach (fb_status_keys() as $k => $label): ?>
               <option value="<?php echo e($k); ?>"<?php echo ((string)$t['status'] === $k) ? ' selected' : ''; ?>><?php echo e($label); ?></option>
             <?php endforeach; ?>
           </select>
@@ -542,6 +606,14 @@ fb_layout_head('管理后台', ['robots' => 'noindex,nofollow']);
     </form>
   <?php endif; ?>
 
+<?php elseif ($tab === 'taxonomy'): ?>
+  <?php fb_admin_taxonomy_page($pdo,
+        isset($_GET['edit_sw'])  ? (int)$_GET['edit_sw']  : 0,
+        isset($_GET['edit_cat']) ? (int)$_GET['edit_cat'] : 0); ?>
+
+<?php elseif ($tab === 'statuses'): ?>
+  <?php fb_admin_status_page($pdo, isset($_GET['edit_st']) ? (int)$_GET['edit_st'] : 0); ?>
+
 <?php elseif ($tab === 'settings'): ?>
   <?php
   $mode    = fb_store_mode();
@@ -761,7 +833,11 @@ function fb_admin_thread_card(array $t) {
     ob_start(); ?>
     <div class="card-form" style="margin:0 0 16px">
       <div class="item-top">
-        <span class="badge cat"><?php echo e(fb_category_label($t['category'])); ?></span>
+        <?php $cSw = !empty($t['software_id']) ? fb_software((int)$t['software_id']) : null; ?>
+        <?php if ($cSw): ?><span class="badge sw"><?php echo e((string)$cSw['name']); ?></span><?php endif; ?>
+        <?php if (!empty($t['category_id'])): ?>
+          <span class="badge cat"><?php echo e(fb_category_label((int)$t['category_id'])); ?></span>
+        <?php endif; ?>
         <span class="badge st st-<?php echo e($t['status']); ?>"><?php echo e(fb_status_label($t['status'])); ?></span>
         <span class="item-title"><?php echo e($t['title']); ?></span>
         <span class="item-id" title="问题编号">#<?php echo (int)$t['id']; ?></span>
diff --git a/api.php b/api.php
index 90c3cd2..21a0bac 100644
--- a/api.php
+++ b/api.php
@@ -34,8 +34,7 @@ $action   = isset($_GET['action']) ? (string)$_GET['action'] : 'list';
 $contacts = !empty($_GET['contacts']);
 $limit    = isset($_GET['limit']) ? max(1, min(500, (int)$_GET['limit'])) : 100;
 
-$cats     = fb_categories();
-$statuses = fb_statuses();
+$statuses = fb_status_keys();
 
 /** 过滤条件 */
 function fb_api_where(&$args, $cats, $statuses) {
@@ -43,8 +42,32 @@ function fb_api_where(&$args, $cats, $statuses) {
     if (!empty($_GET['status']) && isset($statuses[(string)$_GET['status']])) {
         $w[] = 'status = ?'; $args[] = (string)$_GET['status'];
     }
-    if (!empty($_GET['category']) && isset($cats[(string)$_GET['category']])) {
-        $w[] = 'category = ?'; $args[] = (string)$_GET['category'];
+    // 软件：?sw=<slug> 或 ?software_id=<id>
+    $swArg = '';
+    if (!empty($_GET['sw'])) {
+        $sw = fb_software((string)$_GET['sw']);
+        if ($sw) { $w[] = 'software_id = ?'; $args[] = (int)$sw['id']; $swArg = 'sw'; }
+    } elseif (!empty($_GET['software_id'])) {
+        $sw = fb_software((int)$_GET['software_id']);
+        if ($sw) { $w[] = 'software_id = ?'; $args[] = (int)$sw['id']; $swArg = 'id'; }
+    }
+    // 分类：?cid=<id> 优先；兼容老的 ?category=<slug>，在其所属软件内解析
+    if (!empty($_GET['cid'])) {
+        $c = fb_category((int)$_GET['cid']);
+        if ($c) { $w[] = 'category_id = ?'; $args[] = (int)$c['id']; }
+    } elseif (!empty($_GET['category'])) {
+        $slug = (string)$_GET['category'];
+        $swId = 0;
+        if (!empty($_GET['sw'])) {
+            $sw0 = fb_software((string)$_GET['sw']);
+            if ($sw0) { $swId = (int)$sw0['id']; }
+        }
+        if ($swId <= 0) {
+            $d = fb_default_software();
+            if ($d) { $swId = (int)$d['id']; }
+        }
+        $c = fb_category_by_slug($swId, $slug);
+        if ($c) { $w[] = 'category_id = ?'; $args[] = (int)$c['id']; }
     }
     if (!empty($_GET['since'])) {
         $w[] = 'updated_at >= ?'; $args[] = (int)$_GET['since'];
@@ -58,7 +81,9 @@ function fb_api_thread(array $t, $contacts) {
         'id'           => (int)$t['id'],
         'title'        => $t['title'],
         'category'     => $t['category'],
-        'category_cn'  => fb_category_label($t['category']),
+        'category_id'  => isset($t['category_id']) ? (int)$t['category_id'] : null,
+        'category_cn'  => fb_category_label(isset($t['category_id']) ? $t['category_id'] : 0),
+        'software_id'  => isset($t['software_id']) ? (int)$t['software_id'] : null,
         'status'       => $t['status'],
         'status_cn'    => fb_status_label($t['status']),
         'author'       => $t['author_name'],
diff --git a/assets/style.css b/assets/style.css
index 6cef4ca..6e1d602 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -81,6 +81,43 @@ main.wrap{padding-top:24px; padding-bottom:40px; min-height:60vh}
 .page-head h1{margin-bottom:4px}
 .page-head .muted{font-size:14px; margin:0}
 
+/* ---------- 后台：软件 / 分类 / 状态 ---------- */
+.card-list{display:flex; flex-direction:column; gap:8px; margin-bottom:16px}
+.tax-row{
+  display:flex; align-items:flex-start; gap:12px; flex-wrap:wrap;
+  padding:12px 14px; background:var(--card); border:1px solid var(--line);
+  border-radius:11px;
+}
+.tax-row.on{border-color:var(--brand); box-shadow:0 0 0 1px var(--brand) inset}
+.tax-row.off{opacity:.62}
+.tax-main{flex:1 1 320px; min-width:0}
+.tax-name{font-weight:600; font-size:15.5px; text-decoration:none; color:var(--fg)}
+.tax-name:hover{color:var(--brand)}
+.tax-name.plain{font-weight:600}
+.tax-slug{
+  display:inline-block; margin-left:8px; font-size:12px; color:var(--muted);
+  font-family:ui-monospace,Consolas,monospace;
+}
+.tax-meta{margin-left:10px; font-size:12.5px; color:var(--muted)}
+.tax-note{margin-top:5px; font-size:13px; color:var(--muted); line-height:1.5}
+.tax-acts{display:flex; flex-wrap:wrap; gap:6px; align-items:center}
+.inline-form{display:inline}
+.btn.sm{padding:5px 11px; font-size:13px; border-radius:8px}
+.btn.danger{border-color:#e0b4b4; color:#b4242c}
+.btn.danger:hover{background:#fdf2f2; border-color:#b4242c}
+.tax-form-box{
+  margin:18px 0 8px; border:1px solid var(--line); border-radius:11px;
+  background:var(--card); overflow:hidden;
+}
+.tax-form-box>summary{
+  cursor:pointer; padding:12px 14px; font-weight:600; font-size:14.5px;
+  background:var(--bg-soft, #f7f8fa); user-select:none;
+}
+.tax-form-box>summary:hover{color:var(--brand)}
+.tax-form-box[open]>summary{border-bottom:1px solid var(--line)}
+.sm-form{padding:14px; margin:0}
+.sm-form .field{margin-bottom:10px}
+
 /* ---------- 软件切换（一级） ---------- */
 .software-bar{
   display:flex; flex-wrap:wrap; align-items:center; gap:8px;
@@ -136,6 +173,9 @@ main.wrap{padding-top:24px; padding-bottom:40px; min-height:60vh}
 .badge.st-resolved{background:var(--ok-soft); color:var(--ok)}
 .badge.st-closed{background:#f1f3f5; color:#8a929c}
 .badge.official{background:var(--brand); color:#fff}
+/* 软件徽章：比分类更"重"，一眼看出属于哪个软件 */
+.badge.sw{background:#eef2f8; color:#2b4a74; border:1px solid #cfdcee; font-weight:600}
+.badge.st-wontfix{background:#f6eef0; color:#a13c53}
 
 /* ---------- 分页 ---------- */
 .pager{display:flex; align-items:center; gap:12px; margin:22px 0 0; justify-content:center}
diff --git a/config.example.php b/config.example.php
index 95626d9..3e6a1d2 100644
--- a/config.example.php
+++ b/config.example.php
@@ -50,22 +50,14 @@ return [
     // 对访客 IP 做加盐哈希（数据库只保存哈希，不保存明文 IP）。★ 请修改为随机值 ★
     'ip_salt'   => 'CHANGE_ME_random_salt',
 
-    /* ---------------- 问题分类 ---------------- */
-    'categories' => [
-        'usage'   => '使用问题',
-        'bug'     => 'Bug 反馈',
-        'feature' => '功能建议',
-        'sync'    => '同步问题',
-        'other'   => '其他',
-    ],
-
-    /* ---------------- 处理状态 ---------------- */
-    'statuses' => [
-        'open'     => '待处理',
-        'doing'    => '处理中',
-        'resolved' => '已解决',
-        'closed'   => '已关闭',
-    ],
+    /* ---------------- 问题分类与处理状态：已移入数据库 ----------------
+     * 不再写在这里。安装时会把出厂值写进 data/ 的数据库，
+     * 之后在「管理后台 → 软件与分类 / 处理状态」里增删改，改这里无效。
+     *
+     * 出厂分类（首个软件下）：使用问题 / Bug 反馈 / 功能建议 / 同步问题 / 其他
+     * 出厂状态（5 个）：待处理 / 处理中 / 已解决 / 已关闭 / 不予考虑
+     *   每个状态都带一句「给用户看的话」，会在通知邮件里发给提交人。
+     */
 
     /* ---------------- 邮件通知（SMTP） ---------------- */
     'smtp' => [
diff --git a/lib/admin_taxonomy.php b/lib/admin_taxonomy.php
new file mode 100644
index 0000000..9844da2
--- /dev/null
+++ b/lib/admin_taxonomy.php
@@ -0,0 +1,456 @@
+<?php
+/**
+ * 后台：软件 / 分类 / 状态 管理
+ * 全部存数据库，管理员在这里增删改排序启停，不用碰配置文件。
+ */
+if (!defined('FB_ROOT')) { http_response_code(403); exit('forbidden'); }
+
+/* ==================================================================
+ * 统一的表单处理入口（由 admin.php 在 CSRF 校验通过后调用）
+ * 返回 [消息, 类型]，类型 ok / error
+ * ================================================================== */
+function fb_admin_taxonomy_action($pdo, $act, $post) {
+    $now = time();
+
+    switch ($act) {
+
+    /* ---------------- 软件 ---------------- */
+    case 'sw_add': {
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $slug = fb_sw_slugify(isset($post['slug']) ? $post['slug'] : '');
+        $note = trim((string)(isset($post['note']) ? $post['note'] : ''));
+        if ($name === '') { return ['软件名称不能为空。', 'error']; }
+        if (fb_len($name) > 40) { return ['软件名称最多 40 个字符。', 'error']; }
+        if ($slug === '') { $slug = fb_sw_slugify($name); }
+        if ($slug === '') { return ['请填写英文标识（用于网址）。', 'error']; }
+        if (fb_software($slug)) { return ['英文标识「' . $slug . '」已被占用，换一个。', 'error']; }
+        $sort = (int)$pdo->query('SELECT COALESCE(MAX(sort_order),0)+1 FROM software')->fetchColumn();
+        $pdo->prepare('INSERT INTO software(slug,name,note,sort_order,enabled,created_at) VALUES(?,?,?,?,1,?)')
+            ->execute([$slug, $name, $note !== '' ? $note : null, $sort, $now]);
+        $newId = (int)$pdo->lastInsertId();
+        // 新软件默认给一组常见分类，省得空着没法发帖
+        $i = 0;
+        foreach ([['bug', 'Bug'], ['feature', '功能建议'], ['other', '其他']] as $c) {
+            $pdo->prepare('INSERT INTO categories(software_id,slug,name,sort_order,enabled,created_at) VALUES(?,?,?,?,1,?)')
+                ->execute([$newId, $c[0], $c[1], $i++, $now]);
+        }
+        return ['已添加软件「' . $name . '」，并预置 3 个分类。', 'ok'];
+    }
+
+    case 'sw_edit': {
+        $id   = (int)(isset($post['id']) ? $post['id'] : 0);
+        $sw   = fb_software($id);
+        if (!$sw) { return ['软件不存在。', 'error']; }
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $slug = fb_sw_slugify(isset($post['slug']) ? $post['slug'] : '');
+        $note = trim((string)(isset($post['note']) ? $post['note'] : ''));
+        if ($name === '') { return ['软件名称不能为空。', 'error']; }
+        if ($slug === '') { $slug = fb_sw_slugify($name); }
+        if ($slug === '') { return ['请填写英文标识。', 'error']; }
+        $other = fb_software($slug);
+        if ($other && (int)$other['id'] !== $id) { return ['英文标识「' . $slug . '」已被其他软件占用。', 'error']; }
+        $pdo->prepare('UPDATE software SET name=?, slug=?, note=?, sort_order=? WHERE id=?')
+            ->execute([$name, $slug, $note !== '' ? $note : null,
+                       (int)(isset($post['sort_order']) ? $post['sort_order'] : $sw['sort_order']), $id]);
+        return ['软件「' . $name . '」已保存。', 'ok'];
+    }
+
+    case 'sw_del': {
+        $id = (int)(isset($post['id']) ? $post['id'] : 0);
+        $sw = fb_software($id);
+        if (!$sw) { return ['软件不存在。', 'error']; }
+        $cnt = (int)$pdo->query('SELECT COUNT(*) FROM software')->fetchColumn();
+        if ($cnt <= 1) { return ['这是最后一个软件，不能删除（至少要保留一个）。', 'error']; }
+        $n = (int)$pdo->query('SELECT COUNT(*) FROM threads WHERE software_id = ' . $id)->fetchColumn();
+        if ($n > 0) {
+            return ['该软件下还有 ' . $n . ' 条反馈，不能删除。' .
+                    '请先把这些反馈移到其他软件，或先停用该软件（停用后前台不再显示）。', 'error'];
+        }
+        $pdo->prepare('DELETE FROM categories WHERE software_id = ?')->execute([$id]);
+        $pdo->prepare('DELETE FROM software WHERE id = ?')->execute([$id]);
+        return ['已删除软件「' . $sw['name'] . '」。', 'ok'];
+    }
+
+    case 'sw_toggle': {
+        $id = (int)(isset($post['id']) ? $post['id'] : 0);
+        $sw = fb_software($id);
+        if (!$sw) { return ['软件不存在。', 'error']; }
+        $on = (int)$sw['enabled'] === 1 ? 0 : 1;
+        if ($on === 0) {
+            $en = (int)$pdo->query('SELECT COUNT(*) FROM software WHERE enabled = 1')->fetchColumn();
+            if ($en <= 1) { return ['至少要保留一个启用的软件。', 'error']; }
+        }
+        $pdo->prepare('UPDATE software SET enabled = ? WHERE id = ?')->execute([$on, $id]);
+        return ['软件「' . $sw['name'] . '」已' . ($on ? '启用' : '停用') . '。', 'ok'];
+    }
+
+    /* ---------------- 分类 ---------------- */
+    case 'cat_add': {
+        $swId = (int)(isset($post['software_id']) ? $post['software_id'] : 0);
+        if (!fb_software($swId)) { return ['请先选择软件。', 'error']; }
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $slug = fb_sw_slugify(isset($post['slug']) ? $post['slug'] : '');
+        if ($name === '') { return ['分类名称不能为空。', 'error']; }
+        if (fb_len($name) > 30) { return ['分类名称最多 30 个字符。', 'error']; }
+        if ($slug === '') { $slug = fb_sw_slugify($name); }
+        if ($slug === '') { return ['请填写英文标识。', 'error']; }
+        if (fb_category_by_slug($swId, $slug)) { return ['该软件下已有标识为「' . $slug . '」的分类。', 'error']; }
+        $sort = (int)$pdo->query('SELECT COALESCE(MAX(sort_order),0)+1 FROM categories WHERE software_id = ' . $swId)->fetchColumn();
+        $pdo->prepare('INSERT INTO categories(software_id,slug,name,sort_order,enabled,created_at) VALUES(?,?,?,?,1,?)')
+            ->execute([$swId, $slug, $name, $sort, $now]);
+        return ['已添加分类「' . $name . '」。', 'ok'];
+    }
+
+    case 'cat_edit': {
+        $id  = (int)(isset($post['id']) ? $post['id'] : 0);
+        $cat = fb_category($id);
+        if (!$cat) { return ['分类不存在。', 'error']; }
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $slug = fb_sw_slugify(isset($post['slug']) ? $post['slug'] : '');
+        if ($name === '') { return ['分类名称不能为空。', 'error']; }
+        if ($slug === '') { $slug = fb_sw_slugify($name); }
+        if ($slug === '') { return ['请填写英文标识。', 'error']; }
+        $other = fb_category_by_slug((int)$cat['software_id'], $slug);
+        if ($other && (int)$other['id'] !== $id) { return ['该软件下已有标识为「' . $slug . '」的分类。', 'error']; }
+        $pdo->prepare('UPDATE categories SET name=?, slug=?, sort_order=? WHERE id=?')
+            ->execute([$name, $slug,
+                       (int)(isset($post['sort_order']) ? $post['sort_order'] : $cat['sort_order']), $id]);
+        return ['分类「' . $name . '」已保存。', 'ok'];
+    }
+
+    case 'cat_del': {
+        $id  = (int)(isset($post['id']) ? $post['id'] : 0);
+        $cat = fb_category($id);
+        if (!$cat) { return ['分类不存在。', 'error']; }
+        $n = (int)$pdo->query('SELECT COUNT(*) FROM threads WHERE category_id = ' . $id)->fetchColumn();
+        if ($n > 0) {
+            return ['该分类下还有 ' . $n . ' 条反馈，不能删除。可以改为停用（停用后前台不再出现，但历史反馈保留）。', 'error'];
+        }
+        $pdo->prepare('DELETE FROM categories WHERE id = ?')->execute([$id]);
+        return ['已删除分类「' . $cat['name'] . '」。', 'ok'];
+    }
+
+    case 'cat_toggle': {
+        $id  = (int)(isset($post['id']) ? $post['id'] : 0);
+        $cat = fb_category($id);
+        if (!$cat) { return ['分类不存在。', 'error']; }
+        $on = (int)$cat['enabled'] === 1 ? 0 : 1;
+        if ($on === 0) {
+            $en = (int)$pdo->query('SELECT COUNT(*) FROM categories WHERE software_id = ' . (int)$cat['software_id'] . ' AND enabled = 1')->fetchColumn();
+            if ($en <= 1) { return ['每个软件至少要保留一个启用的分类。', 'error']; }
+        }
+        $pdo->prepare('UPDATE categories SET enabled = ? WHERE id = ?')->execute([$on, $id]);
+        return ['分类「' . $cat['name'] . '」已' . ($on ? '启用' : '停用') . '。', 'ok'];
+    }
+
+    /* ---------------- 状态 ---------------- */
+    case 'st_add': {
+        $key  = fb_sw_slugify(isset($post['key_name']) ? $post['key_name'] : '');
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $note = trim((string)(isset($post['user_note']) ? $post['user_note'] : ''));
+        if ($key === '')  { return ['状态标识不能为空（只能用字母、数字、连字符）。', 'error']; }
+        if ($name === '') { return ['状态名称不能为空。', 'error']; }
+        $st = $pdo->prepare('SELECT id FROM statuses WHERE key_name = ? LIMIT 1');
+        $st->execute([$key]);
+        if ($st->fetchColumn() !== false) { return ['状态标识「' . $key . '」已存在。', 'error']; }
+        $sort = (int)$pdo->query('SELECT COALESCE(MAX(sort_order),0)+1 FROM statuses')->fetchColumn();
+        $pdo->prepare('INSERT INTO statuses(key_name,name,user_note,sort_order,enabled) VALUES(?,?,?,?,1)')
+            ->execute([$key, $name, $note !== '' ? $note : null, $sort]);
+        return ['已添加状态「' . $name . '」。', 'ok'];
+    }
+
+    case 'st_edit': {
+        $id = (int)(isset($post['id']) ? $post['id'] : 0);
+        $st = $pdo->prepare('SELECT * FROM statuses WHERE id = ? LIMIT 1');
+        $st->execute([$id]);
+        $row = $st->fetch();
+        if (!$row) { return ['状态不存在。', 'error']; }
+        $name = trim((string)(isset($post['name']) ? $post['name'] : ''));
+        $note = trim((string)(isset($post['user_note']) ? $post['user_note'] : ''));
+        if ($name === '') { return ['状态名称不能为空。', 'error']; }
+        // key_name 不允许改：threads.status 里存的都是它，改了历史数据就失联
+        $pdo->prepare('UPDATE statuses SET name=?, user_note=?, sort_order=? WHERE id=?')
+            ->execute([$name, $note !== '' ? $note : null,
+                       (int)(isset($post['sort_order']) ? $post['sort_order'] : $row['sort_order']), $id]);
+        return ['状态「' . $name . '」已保存。', 'ok'];
+    }
+
+    case 'st_toggle': {
+        $id = (int)(isset($post['id']) ? $post['id'] : 0);
+        $st = $pdo->prepare('SELECT * FROM statuses WHERE id = ? LIMIT 1');
+        $st->execute([$id]);
+        $row = $st->fetch();
+        if (!$row) { return ['状态不存在。', 'error']; }
+        $on = (int)$row['enabled'] === 1 ? 0 : 1;
+        if ($on === 0) {
+            $en = (int)$pdo->query('SELECT COUNT(*) FROM statuses WHERE enabled = 1')->fetchColumn();
+            if ($en <= 1) { return ['至少要保留一个启用的状态。', 'error']; }
+        }
+        $pdo->prepare('UPDATE statuses SET enabled = ? WHERE id = ?')->execute([$on, $id]);
+        return ['状态「' . $row['name'] . '」已' . ($on ? '启用' : '停用') . '。', 'ok'];
+    }
+
+    /* ---------------- 把反馈改挂到别的软件/分类 ---------------- */
+    case 'th_move': {
+        $id    = (int)(isset($post['id']) ? $post['id'] : 0);
+        $swId  = (int)(isset($post['software_id']) ? $post['software_id'] : 0);
+        $catId = (int)(isset($post['category_id']) ? $post['category_id'] : 0);
+        $sw    = fb_software($swId);
+        if (!$sw) { return ['请选择目标软件。', 'error']; }
+        $cat = null;
+        if ($catId) {
+            $cat = fb_category($catId);
+            if (!$cat || (int)$cat['software_id'] !== $swId) {
+                return ['所选分类不属于目标软件，请重新选择。', 'error'];
+            }
+        }
+        $pdo->prepare('UPDATE threads SET software_id = ?, category_id = ?, category = ?, updated_at = ? WHERE id = ?')
+            ->execute([$swId, $cat ? (int)$cat['id'] : null,
+                       $cat ? (string)$cat['slug'] : 'other', time(), $id]);
+        return ['已把 #' . $id . ' 改挂到「' . $sw['name'] . '」' .
+                ($cat ? ' / ' . $cat['name'] : '') . '。', 'ok'];
+    }
+    }
+
+    return ['未知操作。', 'error'];
+}
+
+/** 这个 act 是否属于本模块 */
+function fb_admin_is_taxonomy_act($act) {
+    return in_array($act, [
+        'sw_add', 'sw_edit', 'sw_del', 'sw_toggle',
+        'cat_add', 'cat_edit', 'cat_del', 'cat_toggle',
+        'st_add', 'st_edit', 'st_toggle',
+        'th_move',
+    ], true);
+}
+
+/* ==================================================================
+ * 页面：软件与分类
+ * ================================================================== */
+function fb_admin_taxonomy_page($pdo, $editSw, $editCat) {
+    $swList = fb_softwares(false);   // 含停用的，后台要看得到
+
+    // 当前选中的软件：URL 指定 > 第一个
+    $curSwId = isset($_GET['sw']) ? (int)$_GET['sw'] : 0;
+    if ($curSwId <= 0 && $swList) { $curSwId = (int)$swList[0]['id']; }
+    $curSw   = $curSwId > 0 ? fb_software($curSwId) : null;
+    $curCats = $curSw ? fb_categories((int)$curSw['id'], false) : [];
+
+    echo '<h2 style="margin:22px 0 10px">软件</h2>';
+    echo '<p class="muted" style="margin-top:-4px;font-size:13.5px">'
+       . '前台按软件分栏显示。停用的软件前台不再出现，但它下面的反馈与分类都保留。'
+       . '</p>';
+
+    if (!$swList) {
+        echo '<div class="empty"><p>还没有软件，先添加一个。</p></div>';
+    } else {
+        echo '<div class="card-list">';
+        foreach ($swList as $sw) {
+            $sid    = (int)$sw['id'];
+            $on     = (int)$sw['enabled'] === 1;
+            $nTh    = (int)$pdo->query('SELECT COUNT(*) FROM threads WHERE software_id = ' . $sid)->fetchColumn();
+            $nCat   = (int)$pdo->query('SELECT COUNT(*) FROM categories WHERE software_id = ' . $sid)->fetchColumn();
+            $isCur  = $sid === $curSwId;
+            echo '<div class="tax-row' . ($isCur ? ' on' : '') . ($on ? '' : ' off') . '">';
+            echo '  <div class="tax-main">';
+            echo '    <a class="tax-name" href="admin.php?tab=taxonomy&sw=' . $sid . '">' . e((string)$sw['name']) . '</a>';
+            echo '    <span class="tax-slug">' . e((string)$sw['slug']) . '</span>';
+            if (!$on) { echo '    <span class="badge st">已停用</span>'; }
+            echo '    <span class="tax-meta">' . $nCat . ' 个分类 · ' . $nTh . ' 条反馈</span>';
+            if (!empty($sw['note'])) { echo '    <div class="tax-note">' . e((string)$sw['note']) . '</div>'; }
+            echo '  </div>';
+            echo '  <div class="tax-acts">';
+            echo '    <a class="btn sm" href="admin.php?tab=taxonomy&sw=' . $sid . '">分类</a>';
+            echo '    <a class="btn sm" href="admin.php?tab=taxonomy&edit_sw=' . $sid . '">编辑</a>';
+            echo '    <form method="post" action="admin.php?tab=taxonomy&sw=' . $sid . '" class="inline-form">';
+            echo '      <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+            echo '      <input type="hidden" name="id" value="' . $sid . '">';
+            echo '      <button class="btn sm" name="act" value="sw_toggle" type="submit">' . ($on ? '停用' : '启用') . '</button>';
+            echo '    </form>';
+            echo '    <form method="post" action="admin.php?tab=taxonomy&sw=' . $sid . '" class="inline-form"'
+               . ' onsubmit="return confirm(\'确定删除软件「' . e((string)$sw['name']) . '」？\n只有在该软件下没有反馈时才能删除。\');">';
+            echo '      <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+            echo '      <input type="hidden" name="id" value="' . $sid . '">';
+            echo '      <button class="btn sm danger" name="act" value="sw_del" type="submit">删除</button>';
+            echo '    </form>';
+            echo '  </div>';
+            echo '</div>';
+        }
+        echo '</div>';
+    }
+
+    /* ---- 新增 / 编辑软件 ---- */
+    $esw = null;
+    if ($editSw > 0) { $esw = fb_software($editSw); }
+    echo '<details class="tax-form-box"' . ($esw ? ' open' : '') . '>';
+    echo '<summary>' . ($esw ? '编辑软件「' . e((string)$esw['name']) . '」' : '添加软件') . '</summary>';
+    echo '<form method="post" action="admin.php?tab=taxonomy" class="card-form sm-form">';
+    echo '  <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+    if ($esw) { echo '  <input type="hidden" name="id" value="' . (int)$esw['id'] . '">'; }
+    echo '  <div class="row2">';
+    echo '    <label class="field"><span>名称 <b class="req">*</b></span>'
+       . '<input type="text" name="name" maxlength="40" required value="'
+       . e($esw ? (string)$esw['name'] : '') . '" placeholder="例如：同步日历"></label>';
+    echo '    <label class="field"><span>英文标识<i class="hint">网址里用，留空自动生成</i></span>'
+       . '<input type="text" name="slug" maxlength="40" value="'
+       . e($esw ? (string)$esw['slug'] : '') . '" placeholder="synccalendar"></label>';
+    echo '  </div>';
+    echo '  <label class="field"><span>一句话说明<i class="hint">显示在列表页标题下，可留空</i></span>'
+       . '<input type="text" name="note" maxlength="120" value="'
+       . e($esw ? (string)($esw['note'] === null ? '' : $esw['note']) : '') . '"></label>';
+    if ($esw) {
+        echo '  <label class="field"><span>排序<i class="hint">数字小的排前面</i></span>'
+           . '<input type="number" name="sort_order" value="' . (int)$esw['sort_order'] . '"></label>';
+        echo '  <button class="btn primary" name="act" value="sw_edit" type="submit">保存</button> '
+           . '<a class="btn" href="admin.php?tab=taxonomy">取消</a>';
+    } else {
+        echo '  <button class="btn primary" name="act" value="sw_add" type="submit">添加软件</button>';
+    }
+    echo '</form></details>';
+
+    /* ---- 该软件下的分类 ---- */
+    if (!$curSw) { return; }
+
+    echo '<h2 style="margin:30px 0 10px">「' . e((string)$curSw['name']) . '」的分类</h2>';
+    echo '<p class="muted" style="margin-top:-4px;font-size:13.5px">'
+       . '每个软件有自己的一套分类，名称可以和其他软件重复。'
+       . '停用的分类前台不再出现，历史反馈照旧保留。'
+       . '</p>';
+
+    if (!$curCats) {
+        echo '<div class="empty"><p>这个软件还没有分类，先加一个。</p></div>';
+    } else {
+        echo '<div class="card-list">';
+        foreach ($curCats as $c) {
+            $cid = (int)$c['id'];
+            $on  = (int)$c['enabled'] === 1;
+            $n   = (int)$pdo->query('SELECT COUNT(*) FROM threads WHERE category_id = ' . $cid)->fetchColumn();
+            echo '<div class="tax-row' . ($on ? '' : ' off') . '">';
+            echo '  <div class="tax-main">';
+            echo '    <span class="tax-name plain">' . e((string)$c['name']) . '</span>';
+            echo '    <span class="tax-slug">' . e((string)$c['slug']) . '</span>';
+            if (!$on) { echo '    <span class="badge st">已停用</span>'; }
+            echo '    <span class="tax-meta">' . $n . ' 条反馈</span>';
+            echo '  </div>';
+            echo '  <div class="tax-acts">';
+            echo '    <a class="btn sm" href="admin.php?tab=taxonomy&sw=' . (int)$curSw['id'] . '&edit_cat=' . $cid . '">编辑</a>';
+            echo '    <form method="post" action="admin.php?tab=taxonomy&sw=' . (int)$curSw['id'] . '" class="inline-form">';
+            echo '      <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+            echo '      <input type="hidden" name="id" value="' . $cid . '">';
+            echo '      <button class="btn sm" name="act" value="cat_toggle" type="submit">' . ($on ? '停用' : '启用') . '</button>';
+            echo '    </form>';
+            echo '    <form method="post" action="admin.php?tab=taxonomy&sw=' . (int)$curSw['id'] . '" class="inline-form"'
+               . ' onsubmit="return confirm(\'确定删除分类「' . e((string)$c['name']) . '」？\n只有在该分类下没有反馈时才能删除。\');">';
+            echo '      <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+            echo '      <input type="hidden" name="id" value="' . $cid . '">';
+            echo '      <button class="btn sm danger" name="act" value="cat_del" type="submit">删除</button>';
+            echo '    </form>';
+            echo '  </div>';
+            echo '</div>';
+        }
+        echo '</div>';
+    }
+
+    /* ---- 新增 / 编辑分类 ---- */
+    $ecat = $editCat > 0 ? fb_category($editCat) : null;
+    echo '<details class="tax-form-box"' . ($ecat ? ' open' : '') . '>';
+    echo '<summary>' . ($ecat ? '编辑分类「' . e((string)$ecat['name']) . '」' : '添加分类') . '</summary>';
+    echo '<form method="post" action="admin.php?tab=taxonomy&sw=' . (int)$curSw['id'] . '" class="card-form sm-form">';
+    echo '  <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+    echo '  <input type="hidden" name="software_id" value="' . (int)$curSw['id'] . '">';
+    if ($ecat) { echo '  <input type="hidden" name="id" value="' . (int)$ecat['id'] . '">'; }
+    echo '  <div class="row2">';
+    echo '    <label class="field"><span>分类名称 <b class="req">*</b></span>'
+       . '<input type="text" name="name" maxlength="30" required value="'
+       . e($ecat ? (string)$ecat['name'] : '') . '" placeholder="例如：Bug"></label>';
+    echo '    <label class="field"><span>英文标识<i class="hint">网址里用，留空自动生成</i></span>'
+       . '<input type="text" name="slug" maxlength="40" value="'
+       . e($ecat ? (string)$ecat['slug'] : '') . '" placeholder="bug"></label>';
+    echo '  </div>';
+    if ($ecat) {
+        echo '  <label class="field"><span>排序<i class="hint">数字小的排前面</i></span>'
+           . '<input type="number" name="sort_order" value="' . (int)$ecat['sort_order'] . '"></label>';
+        echo '  <button class="btn primary" name="act" value="cat_edit" type="submit">保存</button> '
+           . '<a class="btn" href="admin.php?tab=taxonomy&sw=' . (int)$curSw['id'] . '">取消</a>';
+    } else {
+        echo '  <button class="btn primary" name="act" value="cat_add" type="submit">添加分类</button>';
+    }
+    echo '</form></details>';
+}
+
+/* ==================================================================
+ * 页面：状态
+ * ================================================================== */
+function fb_admin_status_page($pdo, $editId) {
+    $rows = fb_statuses(false);
+
+    echo '<h2 style="margin:22px 0 10px">处理状态</h2>';
+    echo '<p class="muted" style="margin-top:-4px;font-size:13.5px">'
+       . '「给用户看的话」会写进发给提交人的邮件正文。改这里的文字，前台与邮件都会跟着变。'
+       . '</p>';
+
+    echo '<div class="card-list">';
+    foreach ($rows as $r) {
+        $rid = (int)$r['id'];
+        $on  = (int)$r['enabled'] === 1;
+        $n   = (int)$pdo->query('SELECT COUNT(*) FROM threads WHERE status = '
+             . $pdo->quote((string)$r['key_name']))->fetchColumn();
+        echo '<div class="tax-row' . ($on ? '' : ' off') . '">';
+        echo '  <div class="tax-main">';
+        echo '    <span class="badge st st-' . e((string)$r['key_name']) . '">' . e((string)$r['name']) . '</span>';
+        echo '    <span class="tax-slug">' . e((string)$r['key_name']) . '</span>';
+        if (!$on) { echo '    <span class="badge st">已停用</span>'; }
+        echo '    <span class="tax-meta">' . $n . ' 条反馈</span>';
+        $note = (string)($r['user_note'] === null ? '' : $r['user_note']);
+        echo '    <div class="tax-note">' . ($note !== '' ? e($note) : '<i>（没有给用户看的说明）</i>') . '</div>';
+        echo '  </div>';
+        echo '  <div class="tax-acts">';
+        echo '    <a class="btn sm" href="admin.php?tab=statuses&edit_st=' . $rid . '">编辑</a>';
+        echo '    <form method="post" action="admin.php?tab=statuses" class="inline-form">';
+        echo '      <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+        echo '      <input type="hidden" name="id" value="' . $rid . '">';
+        echo '      <button class="btn sm" name="act" value="st_toggle" type="submit">' . ($on ? '停用' : '启用') . '</button>';
+        echo '    </form>';
+        echo '  </div>';
+        echo '</div>';
+    }
+    echo '</div>';
+
+    /* ---- 新增 / 编辑状态 ---- */
+    $est = null;
+    if ($editId > 0) {
+        $q = $pdo->prepare('SELECT * FROM statuses WHERE id = ? LIMIT 1');
+        $q->execute([$editId]);
+        $est = $q->fetch();
+    }
+    echo '<details class="tax-form-box"' . ($est ? ' open' : '') . '>';
+    echo '<summary>' . ($est ? '编辑状态「' . e((string)$est['name']) . '」' : '添加状态') . '</summary>';
+    echo '<form method="post" action="admin.php?tab=statuses" class="card-form sm-form">';
+    echo '  <input type="hidden" name="csrf" value="' . e(fb_csrf_token()) . '">';
+    if ($est) { echo '  <input type="hidden" name="id" value="' . (int)$est['id'] . '">'; }
+    echo '  <div class="row2">';
+    if ($est) {
+        echo '    <label class="field"><span>标识<i class="hint">不可修改（历史数据靠它对应）</i></span>'
+           . '<input type="text" value="' . e((string)$est['key_name']) . '" disabled></label>';
+    } else {
+        echo '    <label class="field"><span>标识 <b class="req">*</b><i class="hint">字母数字连字符</i></span>'
+           . '<input type="text" name="key_name" maxlength="30" required placeholder="wontfix"></label>';
+    }
+    echo '    <label class="field"><span>显示名称 <b class="req">*</b></span>'
+       . '<input type="text" name="name" maxlength="20" required value="'
+       . e($est ? (string)$est['name'] : '') . '" placeholder="不予考虑"></label>';
+    echo '  </div>';
+    echo '  <label class="field"><span>给用户看的话<i class="hint">会写进通知邮件</i></span>'
+       . '<textarea name="user_note" rows="2" maxlength="200">'
+       . e($est ? (string)($est['user_note'] === null ? '' : $est['user_note']) : '') . '</textarea></label>';
+    if ($est) {
+        echo '  <label class="field"><span>排序</span>'
+           . '<input type="number" name="sort_order" value="' . (int)$est['sort_order'] . '"></label>';
+        echo '  <button class="btn primary" name="act" value="st_edit" type="submit">保存</button> '
+           . '<a class="btn" href="admin.php?tab=statuses">取消</a>';
+    } else {
+        echo '  <button class="btn primary" name="act" value="st_add" type="submit">添加状态</button>';
+    }
+    echo '</form></details>';
+}
\ No newline at end of file
diff --git a/lib/db.php b/lib/db.php
index a524f49..df9d79b 100644
--- a/lib/db.php
+++ b/lib/db.php
@@ -293,7 +293,14 @@ SQL
         $old = [];
         try { $old = (array)fb_cfg('categories', []); } catch (\Throwable $e) { $old = []; }
         if (!$old) {
-            $old = ['usage' => '使用问题', 'bug' => 'Bug', 'feature' => '功能建议', 'other' => '其他'];
+            // 出厂分类：与改造前配置里的五个完全一致，一个都不能少
+            $old = [
+                'usage'   => '使用问题',
+                'bug'     => 'Bug 反馈',
+                'feature' => '功能建议',
+                'sync'    => '同步问题',
+                'other'   => '其他',
+            ];
         }
         $i  = 0;
         $st = $pdo->prepare('INSERT INTO categories(software_id, slug, name, sort_order, enabled, created_at)
diff --git a/lib/layout.php b/lib/layout.php
index dce8315..393ce86 100644
--- a/lib/layout.php
+++ b/lib/layout.php
@@ -27,7 +27,7 @@ function fb_layout_head($title, array $opt = []) {
 <link rel="icon" type="image/png" sizes="16x16" href="assets/favicon-16x16.png">
 <link rel="apple-touch-icon" sizes="180x180" href="assets/apple-touch-icon.png">
 <link rel="manifest" href="assets/site.webmanifest">
-<link rel="stylesheet" href="assets/style.css?v=8">
+<link rel="stylesheet" href="assets/style.css?v=10">
 </head>
 <body>
 <header class="topbar">
diff --git a/thread.php b/thread.php
index ac3c4f6..51697ae 100644
--- a/thread.php
+++ b/thread.php
@@ -42,7 +42,7 @@ if (!fb_thread_public($thread)) {
     exit;
 }
 
-$statuses = fb_statuses();
+$statuses = fb_status_keys();
 $err      = '';
 $atts     = [];
 $form     = ['name' => '', 'email' => '', 'body' => '', 'captcha' => ''];
@@ -156,7 +156,12 @@ fb_layout_head(fb_excerpt($thread['title'], 50));
 
 <article class="subject">
   <div class="item-top">
-    <span class="badge cat"><?php echo e(fb_category_label($thread['category'])); ?></span>
+    <?php
+      $thSw  = !empty($thread['software_id']) ? fb_software((int)$thread['software_id']) : null;
+      $thCat = !empty($thread['category_id']) ? fb_category((int)$thread['category_id']) : null;
+    ?>
+    <?php if ($thSw): ?><span class="badge sw"><?php echo e((string)$thSw['name']); ?></span><?php endif; ?>
+    <?php if ($thCat): ?><span class="badge cat"><?php echo e((string)$thCat['name']); ?></span><?php endif; ?>
     <span class="badge st st-<?php echo e($thread['status']); ?>"><?php echo e(fb_status_label($thread['status'])); ?></span>
     <h1 class="subject-title"><?php echo e($thread['title']); ?></h1>
     <span class="item-id" title="问题编号">#<?php echo (int)$id; ?></span>