refactor: 取消 install.php 安装向导 + 下线 pgsql/mysql 支持 + 班级看板独立

- 删除 install.php：所有入口（index/dashboard/draw/login/api）不再跳安装，
  未登录统一跳 login.php；连接信息变更在【设置】里直接修改 data/config.json
- 下线 pgsql/mysql：
  * bootstrap.php 简化为单文件存储路径（ny_load_config/ny_save_config 直接读写 data/config.json），
    删除 ny_db_config、配置迁移、配置双写分支
  * lib/Db.php 改为纯 stub：pdo() 恒返回 null，避免上层误连；migrate/ensureRosterLogin 等为 no-op
  * Roster.php 经 useDb 永远 false，自动走 roster.json
  * api.php 不再返回 db_driver/db_connected/db_error 诊断
- 班级看板独立（dashboard.php 重写）：
  * 删除"← 返回总览"按钮 + 整体概况 #overview 区
  * 进入即展示单班看板：6 张汇总卡 + 分组对比/成员榜
  * 顶部 hero 区动态显示当前班级名 + 问卷名
  * 工具栏新增 #classSel 班级选择器（切换班级不离开本页）
  * URL 支持 ?pid=&class=&auto=1|0 分享与刷新恢复
  * 下拉班级选项随数据动态刷新；保留自动刷新 + 全屏 + 缓存
- e2e 测试（test-config-save）加固 cleanup 钩子：
  * 统一 cleanup() 函数接管所有退出路径
  * 解决之前 e2e 留 residue 把 data/config.json 改成 mock 地址的问题（导致本机登录失败）
- php -l 全文件通过；node --check 内嵌 JS 通过；e2e test-config-save 27/27 + test-draw-alloc 29/29 全过

api.php

@@ -13,11 +13,7 @@ function cfg(): array
     return ny_load_config();
 }
 
-// 会话/安装保护：除 auth_check 外，未安装或未登录一律拒访
-if (!ny_is_installed()) {
-    ny_json(['ok' => false, 'msg' => '系统尚未安装，请先完成安装向导'], 503);
-    exit;
-}
+// 会话保护：除 auth_check 外，未登录一律拒访
 if ($action !== 'auth_check' && !ny_is_auth()) {
     ny_json(['ok' => false, 'msg' => '未登录或会话已过期，请重新登录'], 401);
     exit;
@@ -56,7 +52,7 @@ try {
                     $new[$k] = is_string($in[$k]) ? trim((string)$in[$k]) : $in[$k];
                 }
             }
-            // 密码：与 install.php 一致不做 trim（保留首尾空格的原貌），空 / 占位符 = 不修改
+            // 密码：保留首尾空格的原貌，空 / 占位符 = 不修改
             if (array_key_exists('password', $in)) {
                 $pwdIn = (string)$in['password'];
                 if ($pwdIn !== '' && $pwdIn !== '******') {

bootstrap.php

@@ -80,17 +80,13 @@ function ny_logout(): void
     session_destroy();
 }
 
-/** 判断是否已安装（有过连接配置且能流转）：文件 config 或 DB settings 存在 base_url 且账号非空 */
+/** 判断是否已安装（只看文件 config：base_url 非空即视为已具备连接配置） */
 function ny_is_installed(): bool
 {
     $cfg = ny_load_config();
     if (trim((string)($cfg['base_url'] ?? '')) === '') {
         return false;
     }
-    // 有无可用的后端（文件 config 存在 ，或 DB 连得上）
-    if (class_exists('Db') && Db::isConnected()) {
-        return true;
-    }
     return is_file(ny_config_file());
 }
 
@@ -145,21 +141,7 @@ function ny_load_config(): array
 {
     $GLOBALS['__ny_cfg_source'] = 'default';
 
-    // 数据库已初始化且能连上 → 从 DB 读，否则回退文件
-    $dbCfg = ny_db_config();
-    if ($dbCfg !== null) {
-        $cfg = ny_default_config();
-        foreach ($cfg as $k => $v) {
-            if (array_key_exists($k, $dbCfg)) {
-                $cfg[$k] = is_bool($v) ? (bool)$dbCfg[$k] : $dbCfg[$k];
-            }
-        }
-        $cfg['base_url']   = rtrim(trim((string)$cfg['base_url']), '/');
-        $cfg['api_prefix'] = '/' . trim((string)$cfg['api_prefix'], '/');
-        $GLOBALS['__ny_cfg_source'] = 'db';
-        return $cfg;
-    }
-
+    // 默认配置 + 文件覆盖（DB 后端本批次已下线，统一走文件存储）
     $cfg = ny_default_config();
     $saved = ny_read_json(ny_config_file(), null);
     if (is_array($saved)) {
@@ -169,15 +151,6 @@ function ny_load_config(): array
             }
         }
         $GLOBALS['__ny_cfg_source'] = 'file';
-        // DB 已连上但库里没有配置，而文件里有 —— 迁移一份到 DB，避免两端不一致
-        if (class_exists('Db') && Db::pdo() !== null && empty($GLOBALS['__ny_cfg_migrated'])) {
-            $GLOBALS['__ny_cfg_migrated'] = true;
-            try {
-                Db::settingsSet('config', json_encode($cfg, JSON_UNESCAPED_UNICODE));
-            } catch (Throwable $e) {
-                // 迁移失败不影响本次使用
-            }
-        }
     }
     $cfg['base_url']   = rtrim(trim((string)$cfg['base_url']), '/');
     $cfg['api_prefix'] = '/' . trim((string)$cfg['api_prefix'], '/');
@@ -186,44 +159,8 @@ function ny_load_config(): array
 
 function ny_save_config(array $cfg): bool
 {
-    // 先写文件快照：DB 万一不可用（连不上 / 未初始化）时不会静默回退到出厂默认配置
-    $fileOk = ny_write_json(ny_config_file(), $cfg);
-
-    if (class_exists('Db')) {
-        $db = Db::pdo();
-        if ($db !== null) {
-            try {
-                Db::settingsSet('config', json_encode($cfg, JSON_UNESCAPED_UNICODE));
-                $GLOBALS['__ny_cfg_source'] = 'db';
-                return true;
-            } catch (Throwable $e) {
-                // 落库失败则回退文件
     $GLOBALS['__ny_cfg_source'] = 'file';
-                return $fileOk;
-            }
-        }
-    }
-    $GLOBALS['__ny_cfg_source'] = 'file';
-    return $fileOk;
-}
-
-/** 数据库初始化后从 DB 读取配置（无则返回 null） */
-function ny_db_config(): ?array
-{
-    if (!class_exists('Db')) {
-        return null;
-    }
-    $db = Db::pdo();
-    if ($db === null) {
-        return null;
-    }
-    try {
-        $raw = (string)(Db::settingsAll()['config'] ?? '');
-    } catch (Throwable $e) {
-        return null;
-    }
-    $data = json_decode($raw, true);
-    return is_array($data) ? $data : null;
+    return ny_write_json(ny_config_file(), $cfg);
 }
 
 /** 安全的字符串化（避免数组/对象转字符串报错） */

dashboard.php

@@ -1,11 +1,11 @@
 <?php
+/**
+ * 班级数据看板（独立页面）：每个班级一张专属看板，无概览、无返回按钮。
+ * URL 支持 ?pid=<projectId>&class=<班级名> 分享与刷新恢复；缺省自动选第一个班级。
+ */
 declare(strict_types=1);
 require __DIR__ . '/bootstrap.php';
 
-if (!ny_is_installed()) {
-    header('Location: install.php');
-    exit;
-}
 if (!ny_is_auth()) {
     header('Location: login.php');
     exit;
@@ -16,7 +16,7 @@ if (!ny_is_auth()) {
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
-<title>数据看板 · <?= htmlspecialchars(NY_APP_NAME) ?></title>
+<title>班级看板 · <?= htmlspecialchars(NY_APP_NAME) ?></title>
 <link rel="stylesheet" href="assets/style.css">
 </head>
 <body class="dash">
@@ -27,12 +27,13 @@ if (!ny_is_auth()) {
     <div class="brand">
       <span class="logo">NY</span>
       <div class="brand-text">
-        <strong>NY问卷考试系统 · 数据看板</strong>
-        <small>班级整体情况 · 面向班主任与学生</small>
+        <strong id="heroTitle">班级看板</strong>
+        <small id="heroSub">选择一个问卷与班级查看考试整体情况</small>
       </div>
     </div>
     <div class="dash-controls">
-      <select id="projectSel"><option value="">请选择问卷 / 考试</option></select>
+      <select id="projectSel" style="min-width:160px"><option value="">请选择问卷 / 考试</option></select>
+      <select id="classSel" style="min-width:140px" disabled><option value="">请先选问卷</option></select>
       <label class="switch"><input type="checkbox" id="autoRefresh" checked><span></span></label>
       <select id="intervalSel" style="width:auto">
         <option value="5">5 秒</option>
@@ -50,45 +51,28 @@ if (!ny_is_auth()) {
     最后更新：<span id="lastUpdate">—</span><i id="liveDot" class="dot"></i>
   </div>
 
-  <!-- ================= 总览 ================= -->
-  <div id="overview">
-    <div class="sec-title">整体概况</div>
-    <section class="cards" id="summary">
-      <div class="card accent-blue"><span>名单总人数</span><b id="oTotal">-</b></div>
-      <div class="card ok accent-green"><span>已提交</span><b id="oSubmit">-</b></div>
-      <div class="card warn accent-orange"><span>缺考</span><b id="oAbsent">-</b></div>
-      <div class="card accent-purple"><span>提交率</span><b id="oRate">-</b></div>
-      <div class="card accent-teal"><span>平均分</span><b id="oAvg">-</b></div>
-      <div class="card accent-indigo"><span>合格率(≥60%满分)</span><b id="oPass">-</b></div>
+  <!-- ================= 班级看板（单班，无概览） ================= -->
+  <div id="board">
+    <!-- 6 个汇总卡片 -->
+    <section class="cards" id="boardSummary">
+      <div class="card accent-blue"><span>总人数</span><b id="bTotal">-</b></div>
+      <div class="card ok accent-green"><span>已提交</span><b id="bSubmit">-</b></div>
+      <div class="card warn accent-orange"><span>缺考</span><b id="bAbsent">-</b></div>
+      <div class="card accent-purple"><span>提交率</span><b id="bRate">-</b></div>
+      <div class="card accent-teal"><span>平均分</span><b id="bAvg">-</b></div>
+      <div class="card accent-indigo"><span>合格率(≥60%满分)</span><b id="bPass">-</b></div>
     </section>
 
-    <div class="sec-title">各班整体情况 <span class="tag-gray" id="classCount"></span>
-      <span class="hint" style="margin-left:auto;font-weight:500">点击班级卡片查看该班详情</span>
+    <div class="sec-title">分组对比 / 考试成员</div>
+    <div id="boardBody">
+      <div class="empty">请选择问卷与班级查看考试整体情况</div>
     </div>
-    <div class="class-grid" id="classGrid">
-      <div class="empty">请选择问卷 / 考试以查看各班数据</div>
-    </div>
-  </div>
-
-  <!-- ================= 班级详情 ================= -->
-  <div id="detail" class="hidden">
-    <div class="detail-head">
-      <button class="btn" id="btnBack">← 返回总览</button>
-      <h2 id="detailTitle">班级详情</h2>
-      <span class="tag-gray" id="detailSub"></span>
-    </div>
-
-    <section class="cards" id="detailSummary"></section>
-
-    <div class="sec-title" id="groupSecTitle">分组对比</div>
-    <div id="groupCompare"></div>
   </div>
 
 </div>
 
 <script>
 const $ = s => document.querySelector(s);
-const $$ = s => Array.from(document.querySelectorAll(s));
 function esc(s){ return String(s == null ? '' : s).replace(/[&<>"]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c])); }
 function rateColor(r){
   if (r >= 90) return 'var(--ok)';
@@ -96,50 +80,60 @@ function rateColor(r){
   return 'var(--danger)';
 }
 
-/* 本地存储（缓存问卷列表/看板数据，重开即恢复） */
+/* URL 状态：?pid=&class=&auto=1|0 */
+function readUrl(){
+  const u = new URL(location.href);
+  return {
+    pid:   u.searchParams.get('pid')   || '',
+    cls:   u.searchParams.get('class') || '',
+    auto:  u.searchParams.get('auto'),
+  };
+}
+function writeUrl({pid, cls, auto}){
+  const u = new URL(location.href);
+  if (pid  !== undefined) u.searchParams.set('pid', pid);
+  if (cls  !== undefined) u.searchParams.set('class', cls);
+  if (auto !== undefined) u.searchParams.set('auto', auto ? '1' : '0');
+  history.replaceState(null, '', u.pathname + (u.search ? u.search : ''));
+}
+
+/* 本地缓存 */
 const LS = {
   get(k, def){ try { const v = localStorage.getItem(k); return v == null ? def : JSON.parse(v); } catch(e){ return def; } },
-  set(k, v){ try { localStorage.setItem(k, JSON.stringify(v)); } catch(e){} },
-  del(k){ try { localStorage.removeItem(k); } catch(e){} }
+  set(k, v){ try { localStorage.setItem(k, v); } catch(e){} },
 };
 const LS_PROJECTS = 'ny_projects';
-const LS_DASH = pid => 'ny_dashboard_' + pid;
+const LS_BOARD   = (pid, cls) => 'ny_board_' + pid + '_' + encodeURIComponent(cls);
 
-let DASH = null;   // 最近一次看板数据
-let CUR  = null;   // 当前查看的班级名
+let DASH  = null;
+let CUR   = readUrl();
 
-async function api(action, opts){
-  opts = opts || {};
+/* ---------- API ---------- */
+async function api(action, params){
   let url = 'api.php?action=' + encodeURIComponent(action);
-  if (opts.params) {
-    for (const k in opts.params) url += '&' + k + '=' + encodeURIComponent(opts.params[k]);
-  }
+  if (params) for (const k in params) url += '&' + k + '=' + encodeURIComponent(params[k] || '');
   const res = await fetch(url, { headers: { 'Accept': 'application/json' } });
   const j = await res.json();
   if (j && j.ok) return j.data;
   throw new Error((j && (j.msg || j.error)) || '请求失败');
 }
 
-/* ---------- 问卷列表：双策略识别文件夹 + 缓存优先 ---------- */
+/* ---------- 问卷列表（双策略文件夹识别 + 缓存） ---------- */
 function renderProjects(list){
   const sel = $('#projectSel');
   const keep = sel.value;
   sel.innerHTML = '<option value="">请选择问卷 / 考试</option>';
-  // 双策略识别文件夹：mode 含 folder，或被其他项目作为 parent_id 引用
   const isFolder = p => (p.mode || '').toLowerCase().includes('folder');
   const parentIds = new Set();
   list.forEach(p => { const pid = (p.parent_id || '0'); if (pid && pid !== '0' && pid !== '') parentIds.add(pid); });
   const folderSet = new Set();
   list.forEach(p => { if (isFolder(p) || parentIds.has(p.id)) folderSet.add(p.id); });
   const childOf = fid => list.filter(p => !folderSet.has(p.id) && (p.parent_id || '0') === fid);
-
-  // 根项
   list.filter(p => !folderSet.has(p.id)).forEach(p => {
     const o = document.createElement('option');
     o.value = p.id; o.textContent = (p.mode ? '[' + p.mode + '] ' : '') + p.name + '（' + (p.total || 0) + '份）';
     sel.appendChild(o);
   });
-  // 文件夹
   list.filter(p => folderSet.has(p.id)).forEach(f => {
     const kids = childOf(f.id);
     if (!kids.length) return;
@@ -152,69 +146,65 @@ function renderProjects(list){
     });
     sel.appendChild(og);
   });
-  if (keep && list.some(p => p.id === keep)) sel.value = keep;
+  if (CUR.pid && list.some(p => p.id === CUR.pid)) sel.value = CUR.pid;
+  else if (keep && list.some(p => p.id === keep)) sel.value = keep;
   else {
-    const last = LS.get('ny_dash_last_pid', '');
+    const last = LS.get('ny_board_last_pid', '');
     if (last && list.some(p => p.id === last)) sel.value = last;
   }
 }
 
 async function loadProjects(){
-  // 1) 先读本地缓存
   const cached = LS.get(LS_PROJECTS, []);
-  if (Array.isArray(cached) && cached.length) {
-    renderProjects(cached);
-  }
-  // 2) 后台异步刷新
+  if (Array.isArray(cached) && cached.length) renderProjects(cached);
   try {
     const list = await api('projects');
-    LS.set(LS_PROJECTS, list || []);
+    LS.set(LS_PROJECTS, JSON.stringify(list || []));
     renderProjects(list || []);
+    refreshClassSel(); // 项目变了刷新班级列表
   } catch (e) {
     if (!cached || !cached.length) {
-      $('#classGrid').innerHTML = '<div class="empty">加载问卷列表失败：' + esc(e.message) + '</div>';
+      $('#boardBody').innerHTML = '<div class="empty">加载问卷列表失败：' + esc(e.message) + '</div>';
     }
   }
 }
 
-function renderSummary(d){
-  const o = d.overall || {};
-  $('#oTotal').textContent  = o.roster_total ?? '-';
-  $('#oSubmit').textContent = o.submitted ?? '-';
-  $('#oAbsent').textContent = o.absent ?? '-';
-  $('#oRate').textContent   = (o.submit_rate != null ? o.submit_rate + '%' : '-');
-  $('#oAvg').textContent    = o.avg_score != null ? o.avg_score : '-';
-  $('#oPass').textContent   = (o.pass_rate != null ? o.pass_rate + '%' : '-');
-}
-
-function renderClasses(d){
-  const classes = d.classes || [];
-  $('#classCount').textContent = classes.length ? classes.length + ' 个班级' : '';
-  if (!classes.length) {
-    $('#classGrid').innerHTML = '<div class="empty">暂无班级数据（名单未导入班级信息）</div>';
+/* ---------- 班级列表（来自 roster） ---------- */
+async function refreshClassSel(){
+  const sel = $('#classSel');
+  const pid = $('#projectSel').value;
+  if (!pid) {
+    sel.innerHTML = '<option value="">请先选问卷</option>';
+    sel.disabled = true;
     return;
   }
-  $('#classGrid').innerHTML = classes.map(c => {
-    const rate = c.rate || 0;
-    const color = rateColor(rate);
-    const gs = (c.groups || []).filter(g => g.group !== '（未分组）');
-    const gtag = gs.length ? gs.map(g => esc(g.group) + '组').join(' / ') : '';
-    return '<div class="class-card clickable" data-cls="' + esc(c.class) + '">' +
-      '<h3><span>' + esc(c.class) + '</span><span class="rate-num" style="color:' + color + '">' + rate + '%</span></h3>' +
-      '<div class="sub">已提交 ' + c.submitted + ' / 总人数 ' + c.total + ' · 缺考 ' + c.absent + '</div>' +
-      '<div class="bar"><i style="width:' + rate + '%;background:' + color + '"></i></div>' +
-      '<div class="class-metrics">' +
-        '<div class="m"><span>平均分</span><b>' + (c.avg != null ? c.avg : '-') + '</b></div>' +
-        '<div class="m"><span>合格率</span><b>' + c.pass_rate + '%</b></div>' +
-        '<div class="m metric-ok"><span>最高分</span><b>' + (c.max != null ? c.max : '-') + '</b></div>' +
-        '<div class="m metric-danger"><span>最低分</span><b>' + (c.min != null ? c.min : '-') + '</b></div>' +
-      '</div>' +
-      (gtag ? '<div class="grp-tag">' + gtag + '</div>' : '') +
-    '</div>';
-  }).join('');
+  // 项目数据来自 api (dashboard)，先调用一次拿班级
+  try {
+    const data = await api('dashboard', { projectId: pid });
+    DASH = data;
+    const classes = (data.classes || []).map(c => c.class);
+    sel.innerHTML = classes.length
+      ? classes.map(c => '<option value="' + esc(c) + '">' + esc(c) + '</option>').join('')
+      : '<option value="">暂无班级</option>';
+    sel.disabled = !classes.length;
+    // 默认 class：URL 指定 > 上次选择 > 第一个
+    if (CUR.cls && classes.includes(CUR.cls)) {
+      sel.value = CUR.cls;
+    } else {
+      const last = LS.get('ny_board_last_cls_' + pid, '');
+      if (last && classes.includes(last)) sel.value = last;
+      else if (classes.length) sel.value = classes[0];
+      CUR.cls = sel.value;
+    }
+    renderBoard();
+  } catch (e) {
+    sel.innerHTML = '<option value="">加载失败</option>';
+    sel.disabled = true;
+    $('#boardBody').innerHTML = '<div class="empty">加载失败：' + esc(e.message) + '</div>';
+  }
 }
 
-/* ---------- 成员榜：排名 / 姓名 / 成绩（默认成绩降序） ---------- */
+/* ---------- 成员榜 ---------- */
 function membersTable(members){
   if (!members || !members.length) {
     return '<div class="empty" style="padding:18px 0">暂无考试成员</div>';
@@ -235,43 +225,55 @@ function membersTable(members){
     '</tbody></table></div>';
 }
 
-/* ---------- 班级详情：整体 + A/B 分组对比 ---------- */
-function showClassDetail(name){
-  if (!DASH) return;
-  const c = (DASH.classes || []).find(x => x.class === name);
-  if (!c) return;
-  CUR = name;
+/* ---------- 渲染单班看板 ---------- */
+function renderBoard(){
+  const pid = $('#projectSel').value;
+  const cls = $('#classSel').value;
+  CUR.pid = pid; CUR.cls = cls;
+  writeUrl({ pid, cls });
 
-  $('#overview').classList.add('hidden');
-  $('#detail').classList.remove('hidden');
+  if (!pid || !cls || !DASH) {
+    $('#boardSummary').innerHTML = '<div class="card accent-blue"><span>总人数</span><b>-</b></div>'.repeat(0) ||
+      '<div class="empty">请选择问卷与班级</div>';
+    $('#boardBody').innerHTML = '<div class="empty">请选择问卷与班级查看考试整体情况</div>';
+    $('#heroTitle').textContent = '班级看板';
+    $('#heroSub').textContent = '选择一个问卷与班级查看考试整体情况';
+    return;
+  }
+  LS.set('ny_board_last_pid', JSON.stringify(pid));
+  LS.set('ny_board_last_cls_' + pid, JSON.stringify(cls));
 
-  $('#detailTitle').textContent = c.class;
-  $('#detailSub').textContent = '总人数 ' + c.total + ' · 已提交 ' + c.submitted + ' · 缺考 ' + c.absent;
+  const c = (DASH.classes || []).find(x => x.class === cls);
+  if (!c) {
+    $('#boardBody').innerHTML = '<div class="empty">该班级无数据（名单中无此班级）</div>';
+    return;
+  }
 
+  // 顶部品牌区：动态标题
+  const projectName = ($('#projectSel').selectedOptions[0] || {}).textContent || '';
+  $('#heroTitle').textContent = cls + ' · 班级看板';
+  $('#heroSub').textContent = '问卷：' + projectName.replace(/\uff08\d+份\uff09$/, '') + ' · ' +
+    '总 ' + c.total + ' / 已交 ' + c.submitted + ' / 缺考 ' + c.absent;
+
+  // 6 卡汇总
   const color = rateColor(c.rate || 0);
-  $('#detailSummary').innerHTML =
-    '<div class="card accent-purple"><span>提交率</span><b style="color:' + color + '">' + c.rate + '%</b></div>' +
+  $('#boardSummary').innerHTML =
+    '<div class="card accent-blue"><span>总人数</span><b>' + c.total + '</b></div>' +
     '<div class="card ok accent-green"><span>已提交</span><b>' + c.submitted + '</b></div>' +
     '<div class="card warn accent-orange"><span>缺考</span><b>' + c.absent + '</b></div>' +
-    '<div class="card accent-blue"><span>总人数</span><b>' + c.total + '</b></div>' +
+    '<div class="card accent-purple"><span>提交率</span><b style="color:' + color + '">' + c.rate + '%</b></div>' +
     '<div class="card accent-teal"><span>平均分</span><b>' + (c.avg != null ? c.avg : '-') + '</b></div>' +
-    '<div class="card accent-indigo"><span>合格率</span><b>' + c.pass_rate + '%</b></div>' +
-    '<div class="card accent-green"><span>最高分</span><b>' + (c.max != null ? c.max : '-') + '</b></div>' +
-    '<div class="card accent-red"><span>最低分</span><b>' + (c.min != null ? c.min : '-') + '</b></div>';
+    '<div class="card accent-indigo"><span>合格率</span><b>' + c.pass_rate + '%</b></div>';
 
-  // 分组对比：过滤掉“未分组”，按组名排序（A 在左，B 在右）
   const groups = (c.groups || []).filter(g => g.group !== '（未分组）');
-  const box = $('#groupCompare');
+  const box = $('#boardBody');
   if (!groups.length) {
-    $('#groupSecTitle').textContent = '考试成员';
     box.innerHTML = '<div class="gpanel">' +
       '<div class="ghead"><strong>本班考试成员</strong>' +
       '<span class="rate-num">' + c.submitted + ' 人</span></div>' +
       '<div class="sub">该班级未设置分组（A/B），以下按成绩从高到低排列</div>' +
       membersTable(c.members) + '</div>';
-    return;
-  }
-  $('#groupSecTitle').textContent = '分组对比（' + groups.map(g => g.group).join(' vs ') + '）';
+  } else {
     box.innerHTML = '<div class="group-compare">' + groups.map(g => {
       const gc = rateColor(g.rate || 0);
       return '<div class="gpanel">' +
@@ -290,53 +292,6 @@ function showClassDetail(name){
       '</div>';
     }).join('') + '</div>';
   }
-
-function backToOverview(){
-  CUR = null;
-  $('#detail').classList.add('hidden');
-  $('#overview').classList.remove('hidden');
-}
-
-async function loadDashboard(){
-  const pid = $('#projectSel').value;
-  if (!pid) {
-    $('#classGrid').innerHTML = '<div class="empty">请选择问卷 / 考试以查看各班数据</div>';
-    return;
-  }
-
-  // 1) 缓存优先：先渲染上次保存的看板，避免空白
-  const cached = LS.get(LS_DASH(pid), null);
-  if (cached && cached.classes) {
-    DASH = cached;
-    renderSummary(DASH);
-    renderClasses(DASH);
-    $('#lastUpdate').textContent = (cached.updated_at || '—') + '（缓存）';
-    if (CUR) {
-      const still = (DASH.classes || []).some(x => x.class === CUR);
-      if (still) showClassDetail(CUR); else backToOverview();
-    }
-  }
-
-  // 2) 后台拉真实数据
-  try {
-    const fresh = await api('dashboard', { params: { projectId: pid } });
-    DASH = fresh;
-    LS.set(LS_DASH(pid), fresh);
-    LS.set('ny_dash_last_pid', pid);
-    renderSummary(DASH);
-    renderClasses(DASH);
-    $('#lastUpdate').textContent = DASH.updated_at || '-';
-    $('#liveDot').classList.add('on');
-    setTimeout(() => $('#liveDot').classList.remove('on'), 900);
-    if (CUR) {
-      const still = (DASH.classes || []).some(x => x.class === CUR);
-      if (still) showClassDetail(CUR); else backToOverview();
-    }
-  } catch (e) {
-    if (!cached) {
-      $('#classGrid').innerHTML = '<div class="empty">数据加载失败：' + esc(e.message) + '</div>';
-    }
-  }
 }
 
 /* ---------- 全屏 ---------- */
@@ -346,7 +301,7 @@ function toggleFullscreen(){
     const req = el.requestFullscreen || el.webkitRequestFullscreen;
     if (req) req.call(el);
   } else {
-    const ex = document.exitFullscreen || document.webkitExitFullscreen;
+    const ex = el.exitFullscreen || el.webkitExitFullscreen;
     if (ex) ex.call(document);
   }
 }
@@ -357,31 +312,61 @@ function onFsChange(){
   if (btn) btn.textContent = on ? '⛶ 退出全屏' : '⛶ 全屏';
 }
 
+/* ---------- 自动刷新 ---------- */
+let timer = null;
 function schedule(){
-  if (window.__timer) clearInterval(window.__timer);
+  if (timer) { clearInterval(timer); timer = null; }
   if (!$('#autoRefresh').checked) return;
   const sec = parseInt($('#intervalSel').value, 10) || 15;
-  window.__timer = setInterval(loadDashboard, sec * 1000);
+  timer = setInterval(refreshBoard, sec * 1000);
+}
+async function refreshBoard(){
+  const pid = $('#projectSel').value;
+  if (!pid) return;
+  try {
+    const fresh = await api('dashboard', { projectId: pid });
+    DASH = fresh;
+    // 项目集合可能换：刷新班级下拉但保留当前选择
+    const sel = $('#classSel');
+    const keep = sel.value;
+    const classes = (fresh.classes || []).map(c => c.class);
+    if (!classes.includes(keep)) {
+      sel.innerHTML = classes.length
+        ? classes.map(c => '<option value="' + esc(c) + '">' + esc(c) + '</option>').join('')
+        : '<option value="">暂无班级</option>';
+      sel.disabled = !classes.length;
+      if (classes.length) { sel.value = classes[0]; CUR.cls = classes[0]; writeUrl({ cls: classes[0] }); }
+    }
+    renderBoard();
+    $('#lastUpdate').textContent = fresh.updated_at || '-';
+    $('#liveDot').classList.add('on');
+    setTimeout(() => $('#liveDot').classList.remove('on'), 900);
+  } catch (e) {
+    /* 静默续期：保留旧数据不打扰 */
+  }
 }
 
 /* ---------- 事件 ---------- */
-$('#projectSel').addEventListener('change', () => { backToOverview(); loadDashboard(); });
-$('#btnRefresh').addEventListener('click', loadDashboard);
-$('#autoRefresh').addEventListener('change', schedule);
+$('#projectSel').addEventListener('change', () => { CUR.pid = $('#projectSel').value; CUR.cls = ''; refreshClassSel(); schedule(); });
+$('#classSel').addEventListener('change',   () => { CUR.cls = $('#classSel').value; renderBoard(); });
+$('#btnRefresh').addEventListener('click', refreshBoard);
+$('#autoRefresh').addEventListener('change', () => { writeUrl({ auto: $('#autoRefresh').checked }); schedule(); });
 $('#intervalSel').addEventListener('change', schedule);
 $('#btnFullscreen').addEventListener('click', toggleFullscreen);
 document.addEventListener('fullscreenchange', onFsChange);
 document.addEventListener('webkitfullscreenchange', onFsChange);
-$('#btnBack').addEventListener('click', backToOverview);
 
-// 班级卡片点击进入详情
-$('#classGrid').addEventListener('click', e => {
-  const card = e.target.closest('.class-card');
-  if (card && card.dataset.cls) showClassDetail(card.dataset.cls);
+/* ---------- 启动 ---------- */
+loadProjects().then(() => {
+  if (CUR.pid) {
+    $('#projectSel').value = CUR.pid;
+    refreshClassSel().then(() => { renderBoard(); schedule(); });
+  } else {
+    refreshClassSel();
+  }
 });
-
-loadProjects().then(loadDashboard);
-schedule();
+// auto 参数
+if (CUR.auto === '0') $('#autoRefresh').checked = false;
 </script>
 </body>
 </html>

draw.php

@@ -1,16 +1,12 @@
 <?php
 /**
  * NY 问卷考试系统数据平台 - 随机抽取
- * 从名单 / 已提交人员中随机抽取（支持分组均衡 5:5、排除名单、历史记录），
+ * 从名单 / 已提交人员中随机抽取（支持按人数加权/均分/自定义比例/不分组、排除名单、历史记录），
  * 导出为卷王白名单（两列：姓名 / 登陆账号）
  */
 declare(strict_types=1);
 require __DIR__ . '/bootstrap.php';
 
-if (!ny_is_installed()) {
-    header('Location: install.php');
-    exit;
-}
 if (!ny_is_auth()) {
     header('Location: login.php');
     exit;

index.php

@@ -2,10 +2,6 @@
 declare(strict_types=1);
 require __DIR__ . '/bootstrap.php';
 
-if (!ny_is_installed()) {
-    header('Location: install.php');
-    exit;
-}
 if (!ny_is_auth()) {
     header('Location: login.php');
     exit;
@@ -206,7 +202,7 @@ $rosterCount = Roster::count();
         <div class="fi full">
           <label>系统地址（不可在此修改）</label>
           <input type="text" id="cfgBase" readonly>
-          <p class="hint">如需修改系统地址请重新打开 <a href="install.php?force=1" target="_blank">install.php</a></p>
+          <p class="hint">如需修改请编辑 <code>data/config.json</code>（保存后清 token 自动重连）</p>
         </div>
         <div class="fi">
           <label>登录账号</label>

install.php

@@ -1,203 +0,0 @@
-<?php
-/**
- * 首次安装向导：配置数据存储后端（文件 / PostgreSQL / MariaDB）与卷王系统连接信息。
- * 访问本页时若已安装则自动跳转 /login。
- */
-declare(strict_types=1);
-require __DIR__ . '/bootstrap.php';
-
-// 已安装：默认跳转登录页；仅当带 ?force=1 或提交 POST 时才允许重新配置
-if (ny_is_installed() && empty($_GET['force']) && $_SERVER['REQUEST_METHOD'] !== 'POST') {
-    header('Location: login.php');
-    exit;
-}
-
-$err = '';
-$ok  = false;
-
-if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-    $backend = (string)($_POST['backend'] ?? 'file');
-    $base    = rtrim(trim((string)($_POST['base_url'] ?? '')), '/');
-    $prefix  = '/' . trim((string)($_POST['api_prefix'] ?? '/api'), '/');
-    $user    = trim((string)($_POST['username'] ?? ''));
-    $pwd     = (string)($_POST['password'] ?? '');
-    $verify  = !empty($_POST['verify_ssl']);
-    $full    = (int)($_POST['full_score'] ?? 100);
-    if ($full < 1) {
-        $full = 100;
-    }
-
-    if ($base === '' || $user === '') {
-        $err = '请填写卷王系统地址与登录账号。';
-    } else {
-        // 1) 若是数据库后端，先保存连接参数并测试+建表
-        if ($backend === 'pgsql' || $backend === 'mysql') {
-            $dbp = [
-                'driver'   => $backend,
-                'host'     => trim((string)($_POST['db_host'] ?? '127.0.0.1')),
-                'port'     => (int)($_POST['db_port'] ?? ($backend === 'pgsql' ? 5432 : 3306)),
-                'dbname'   => trim((string)($_POST['db_name'] ?? '')),
-                'user'     => trim((string)($_POST['db_user'] ?? '')),
-                'password' => (string)($_POST['db_pass'] ?? ''),
-            ];
-            if ($dbp['dbname'] === '') {
-                $err = '请填写数据库名。';
-            } else {
-                try {
-                    Db::saveParams($dbp);
-                    // 重新建立连接并建表
-                    $pdo = Db::connect($dbp);
-                    Db::migrate();
-                } catch (Throwable $e) {
-                    $err = '数据库连接/初始化失败：' . $e->getMessage();
-                }
-            }
-        }
-
-        if ($err === '') {
-            // 2) 写入系统配置（DB 后端写 settings['config']，文件后端写 config.json）
-            $cfg = ny_default_config();
-            $cfg['base_url']          = $base;
-            $cfg['api_prefix']        = $prefix;
-            $cfg['username']          = $user;
-            $cfg['password']          = $pwd;
-            $cfg['verify_ssl']        = $verify;
-            $cfg['full_score']        = $full;
-            $saved = ny_save_config($cfg);
-            if ($saved) {
-                // 清理 token 缓存（连接信息变化）
-                @unlink(NY_DATA . '/cache/token.json');
-                $ok = true;
-            } else {
-                if ($backend === 'file') {
-                    $err = '无法写入文件配置，请检查 data/ 目录权限。';
-                } else {
-                    $err = '配置写入失败（已建表但写入配置异常）。';
-                }
-            }
-        }
-    }
-}
-
-$cfg = ny_load_config();
-?>
-<!DOCTYPE html>
-<html lang="zh-CN">
-<head>
-<meta charset="utf-8">
-<meta name="viewport" content="width=device-width, initial-scale=1">
-<title>首次安装 · <?= htmlspecialchars(NY_APP_NAME) ?></title>
-<link rel="stylesheet" href="assets/style.css">
-<style>
-.install-wrap { position:fixed; inset:0; z-index:200; display:flex; align-items:center; justify-content:center; padding:20px; background:linear-gradient(135deg,#1b2440,#2f6bff); overflow:auto; }
-.install-box { width:640px; max-width:100%; background:#fff; border-radius:18px; padding:28px 28px 30px; box-shadow:0 24px 64px rgba(15,23,42,.35); }
-.install-box::before { content:''; position:absolute; }
-.steps { display:flex; gap:8px; margin:6px 0 20px; }
-.steps i { flex:1; height:4px; border-radius:999px; background:#e2e8f2; }
-.steps i.on { background:linear-gradient(90deg,#2f6bff,#6a4bff); }
-.opt-seg { display:flex; gap:10px; }
-.opt-seg label { flex:1; display:flex; align-items:center; justify-content:center; gap:8px; border:1px solid var(--border); border-radius:10px; padding:12px 8px; cursor:pointer; font-size:13px; font-weight:600; color:var(--text-2); transition:.15s; }
-.opt-seg label.on { border-color:var(--primary); background:var(--primary-weak); color:var(--primary); }
-.opt-seg input { display:none; }
-.db-box { margin-top:14px; padding:14px; border:1px dashed #cfd8ea; border-radius:10px; background:#fbfcfe; }
-.db-box.hidden { display:none; }
-.form-grid2 { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
-.fi.full { grid-column:1 / -1; }
-.banner { padding:12px 14px; border-radius:10px; font-size:12.5px; margin-bottom:16px; line-height:1.6; }
-.banner.err { background:var(--danger-weak); color:#a3342c; border:1px solid #f5d3cf; }
-.banner.ok { background:var(--ok-weak); color:#0d7a4d; border:1px solid #c8ecda; }
-.forgot { display:flex; justify-content:flex-end; margin-top:6px; font-size:12px; color:var(--text-3); }
-</style>
-</head>
-<body class="dash">
-<div class="install-wrap">
-  <div class="install-box">
-    <div class="login-brand">
-      <span class="logo">NY</span>
-      <div class="brand-text">
-        <strong><?= htmlspecialchars(NY_APP_NAME) ?></strong>
-        <small>首次安装 · 配置数据存储与系统连接</small>
-      </div>
-    </div>
-
-    <div class="steps"><i class="on"></i><i class="on"></i></div>
-
-    <?php if ($ok): ?>
-      <div class="banner ok">✅ 安装完成！即将进入登录页…</div>
-      <p style="font-size:13px;color:var(--text-2);text-align:center;margin:24px 0 6px">
-        若连接信息有误或未生效，请重新访问本页配置。</p>
-      <div class="login-actions"><button class="btn btn-primary" onclick="location.href='login.php'">前往登录</button></div>
-    <?php else: ?>
-      <form method="post" class="form-grid" id="f">
-        <?php if ($err !== ''): ?><div class="banner err full"><?= htmlspecialchars($err) ?></div><?php endif; ?>
-
-        <div class="fi full">
-          <label>数据存储后端</label>
-          <div class="opt-seg" id="seg">
-            <label><input type="radio" name="backend" value="file" checked><span>✅ 文件存储</span><small style="font-weight:500;color:var(--text-3)">无需数据库，开箱即用</small></label>
-            <label><input type="radio" name="backend" value="pgsql"><span>🐘 PostgreSQL</span><small style="font-weight:500;color:var(--text-3)">生产环境推荐</small></label>
-            <label><input type="radio" name="backend" value="mysql"><span>🍀 MariaDB / MySQL</span><small style="font-weight:500;color:var(--text-3)">兼容 MySQL 协议</small></label>
-          </div>
-        </div>
-
-        <div class="db-box hidden full" id="dbBox">
-          <div class="form-grid2">
-            <div class="fi"><label>主机</label><input type="text" name="db_host" value="127.0.0.1"></div>
-            <div class="fi"><label>端口</label><input type="number" id="db_port" name="db_port" value="5432"></div>
-            <div class="fi"><label>数据库名</label><input type="text" name="db_name"></div>
-            <div class="fi"><label>账号</label><input type="text" name="db_user"></div>
-            <div class="fi full"><label>密码</label><input type="password" name="db_pass"></div>
-          </div>
-        </div>
-
-        <div class="fi full">
-          <label>卷王系统地址</label>
-          <input type="text" name="base_url" value="<?= htmlspecialchars($cfg['base_url']) ?>" placeholder="https://exam.nxxy335.top">
-        </div>
-        <div class="fi">
-          <label>接口前缀</label>
-          <input type="text" name="api_prefix" value="<?= htmlspecialchars($cfg['api_prefix']) ?>" placeholder="/api">
-        </div>
-        <div class="fi">
-          <label>默认满分</label>
-          <input type="number" name="full_score" min="1" max="1000" value="<?= (int)$cfg['full_score'] ?>">
-          <p class="hint">用于合格率(≥60%满分)，各试卷可在设置中单独调整</p>
-        </div>
-        <div class="fi">
-          <label>登录账号</label>
-          <input type="text" name="username" value="<?= htmlspecialchars($cfg['username']) ?>" placeholder="admin">
-        </div>
-        <div class="fi">
-          <label>登录密码</label>
-          <input type="password" name="password" placeholder="请输入密码">
-        </div>
-        <div class="fi full checks">
-          <label><input type="checkbox" name="verify_ssl" <?= $cfg['verify_ssl'] ? 'checked' : '' ?>> 校验 HTTPS 证书</label>
-        </div>
-
-        <div class="full" style="margin-top:10px">
-          <button class="btn btn-primary" id="btnInstall" style="width:100%;height:44px;font-size:15px">⚙️ 完成安装</button>
-        </div>
-      </form>
-    <?php endif; ?>
-  </div>
-</div>
-<script>
-(function(){
-  var seg = document.getElementById('seg');
-  var dbBox = document.getElementById('dbBox');
-  var dbPort = document.getElementById('db_port');
-  function sync(){
-    var v = (document.querySelector('input[name=backend]:checked')||{}).value || 'file';
-    var labels = seg.querySelectorAll('label');
-    labels.forEach(function(l){ l.classList.toggle('on', l.querySelector('input').value === v); });
-    dbBox.classList.toggle('hidden', v === 'file');
-    if (v === 'pgsql') dbPort.value = 5432;
-    if (v === 'mysql') dbPort.value = 3306;
-  }
-  seg.addEventListener('change', sync);
-  sync();
-})();
-</script>
-</body>
-</html>

lib/Db.php

@@ -1,322 +1,83 @@
 <?php
 /**
- * 数据库连接层（统一 PDO）
- *
- * 支持 PostgreSQL / MariaDB(MySQL) / SQLite(主要用于本地无 DB 时的降级与测试)。
- * 连接参数存于 data/db.json；通过 Db::instance() 取单例连接。
- * 未配置数据库时返回 null，上层回退到文件存储（config.json / roster.json）。
+ * 数据库适配层（旧：pgsql/mysql/sqlite 三方言支持）
+ * 本批次已下线，仅保留文件存储。如未来需要接入 DB，请在此文件实现 PDO 单例。
  */
 declare(strict_types=1);
 
 class Db
 {
-    /** @var PDO|null */
-    private static $pdo = null;
-    private static string $driver = '';
-    private static bool $tried = false;
-    private static bool $failed = false;
-    private static string $lastError = '';
+    /** @var PDO|null 当前不可用，始终返回 null */
+    private static ?PDO $pdo = null;
 
-    /** 数据库连接参数文件 */
-    public static function dbFile(): string
-    {
-        return NY_DATA . '/db.json';
-    }
-
-    /** 是否已配置数据库（db.json 存在且有 driver/host 等） */
     public static function isConfigured(): bool
     {
-        $d = self::params();
-        return !empty($d['driver']);
-    }
-
-    /** 读取连接参数 */
-    public static function params(): array
-    {
-        $d = ny_read_json(self::dbFile(), null);
-        if (!is_array($d)) {
-            return [];
-        }
-        return $d;
-    }
-
-    /** 写入连接参数 */
-    public static function saveParams(array $p): bool
-    {
-        return ny_write_json(self::dbFile(), $p);
-    }
-
-    /** 当前驱动名（用于 SQL 方言）：mysql | pgsql | sqlite | '' */
-    public static function driver(): string
-    {
-        self::check();
-        return self::$driver;
+        return false;
     }
 
     public static function isConnected(): bool
     {
-        self::check();
-        return self::$pdo !== null;
+        return false;
+    }
+
+    public static function driver(): string
+    {
+        return '';
     }
 
-    /** 上一次连接失败的原因（连接正常时为空） */
     public static function lastError(): string
     {
-        self::check();
-        return self::$lastError;
+        return '';
     }
 
-    /**
-     * 获取 PDO 单例；未配置或连不上返回 null。
-     */
-    public static function pdo(): ?PDO
+    public static function params(): array
     {
-        self::check();
-        return self::$pdo;
+        return [];
     }
 
-    private static function check(): void
+    public static function saveParams(array $p): bool
     {
-        if (self::$tried) {
-            return;
-        }
-        self::$tried = true;
-        $p = self::params();
-        $driver = strtolower((string)($p['driver'] ?? ''));
-        if ($driver === '') {
-            return;
-        }
-        self::$driver = $driver;
-        try {
-            self::$pdo = self::connect($p);
-        } catch (Throwable $e) {
-            self::$failed = true;
-            self::$pdo = null;
-            self::$lastError = $e->getMessage();
-        }
+        return false;
     }
 
-    /** 根据参数建 PDO 连接 */
     public static function connect(array $p): PDO
     {
-        $driver = strtolower((string)($p['driver'] ?? ''));
-        $host = (string)($p['host'] ?? '127.0.0.1');
-        $port = (int)($p['port'] ?? 0);
-        $db   = (string)($p['dbname'] ?? ($p['database'] ?? ''));
-        $user = (string)($p['user'] ?? ($p['username'] ?? ''));
-        $pass = (string)($p['password'] ?? '');
-
-        $options = [
-            PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
-            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-            PDO::ATTR_EMULATE_PREPARES   => false,
-        ];
-
-        if ($driver === 'sqlite') {
-            $dsn = 'sqlite:' . ($p['path'] ?? ($db ?: (NY_DATA . '/app.sqlite')));
-        } elseif ($driver === 'pgsql') {
-            $dsn = 'pgsql:host=' . $host;
-            if ($port > 0) {
-                $dsn .= ';port=' . $port;
-            }
-            $dsn .= ';dbname=' . $db;
-            $dsn .= ';user=' . $user;
-            $dsn .= ';password=' . $pass;
-        } else { // mysql / mariadb
-            $dsn = 'mysql:host=' . $host;
-            if ($port > 0) {
-                $dsn .= ';port=' . $port;
-            }
-            $dsn .= ';dbname=' . $db . ';charset=utf8mb4';
-            $options[PDO::ATTR_PERSISTENT] = false;
+        throw new RuntimeException('数据库后端已下线，请使用文件存储（data/config.json / data/roster.json）');
     }
 
-        $pdo = new PDO($dsn, $user, $pass, $options);
-        if ($driver === 'mysql') {
-            $pdo->exec("SET NAMES utf8mb4");
-        }
-        return $pdo;
+    public static function pdo(): ?PDO
+    {
+        return null;
     }
 
-    /** 表名前缀 */
     public static function prefix(): string
     {
         return 'ny_';
     }
 
-    /**
-     * 建表（幂等）。返回已执行语句数量。
-     * 用通用 SQL，三方言均可执行（表名/列名小写、规范命名）。
-     */
     public static function migrate(): int
     {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            throw new RuntimeException('数据库未连接，无法初始化表结构');
-        }
-        $driver = self::$driver;
-        $n = 0;
-
-        // settings(key,value) —— 系统设置键值表
-        if ($driver === 'sqlite') {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_settings (' .
-                'k VARCHAR(128) PRIMARY KEY, ' .
-                'v TEXT)';
-        } elseif ($driver === 'pgsql') {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_settings (' .
-                'k VARCHAR(128) PRIMARY KEY, ' .
-                'v TEXT)';
-        } else {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_settings (' .
-                '`k` VARCHAR(128) NOT NULL PRIMARY KEY, ' .
-                '`v` TEXT) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4';
-        }
-        $pdo->exec($sql); $n++;
-
-        // roster —— 名单表（学号/姓名/班级/组别/登陆账号）
-        if ($driver === 'sqlite') {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_roster (' .
-                'id INTEGER PRIMARY KEY AUTOINCREMENT, ' .
-                'sid VARCHAR(64), name VARCHAR(128), cls VARCHAR(64), grp VARCHAR(32), login VARCHAR(64))';
-        } elseif ($driver === 'pgsql') {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_roster (' .
-                'id SERIAL PRIMARY KEY, ' .
-                'sid VARCHAR(64), name VARCHAR(128), cls VARCHAR(64), grp VARCHAR(32), login VARCHAR(64))';
-        } else {
-            $sql = 'CREATE TABLE IF NOT EXISTS ny_roster (' .
-                'id INT AUTO_INCREMENT PRIMARY KEY, ' .
-                'sid VARCHAR(64), name VARCHAR(128), cls VARCHAR(64), grp VARCHAR(32), login VARCHAR(64)) ' .
-                'ENGINE=InnoDB DEFAULT CHARSET=utf8mb4';
-        }
-        $pdo->exec($sql); $n++;
-
-        // 旧版本升级：补 login 列
-        self::ensureRosterLogin();
-
-        return $n;
-    }
-
-    /** 旧表升级：ny_roster 缺 login 列时自动补（三方言兼容） */
-    public static function ensureRosterLogin(): void
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            return;
-        }
-        $has = false;
-        if (self::$driver === 'sqlite') {
-            foreach ($pdo->query('PRAGMA table_info(ny_roster)')->fetchAll() as $c) {
-                if (strtolower((string)$c['name']) === 'login') {
-                    $has = true;
-                    break;
-                }
-            }
-        } elseif (self::$driver === 'pgsql') {
-            $st = $pdo->prepare("SELECT COUNT(*) FROM information_schema.columns " .
-                "WHERE table_name = 'ny_roster' AND column_name = 'login'");
-            $st->execute();
-            $has = (int)$st->fetchColumn() > 0;
-        } else {
-            $has = $pdo->query("SHOW COLUMNS FROM ny_roster LIKE 'login'")->fetch() !== false;
-        }
-        if (!$has) {
-            $pdo->exec('ALTER TABLE ny_roster ADD COLUMN login VARCHAR(64)');
-        }
-    }
-
-    /**
-     * 把所有 settings 读成数组
-     */
-    public static function settingsAll(): array
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            return [];
-        }
-        $out = [];
-        $stmt = $pdo->query('SELECT k, v FROM ny_settings');
-        foreach ($stmt->fetchAll() as $row) {
-            $out[$row['k']] = $row['v'];
-        }
-        return $out;
-    }
-
-    public static function settingsSet(string $k, string $v): void
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            return;
-        }
-        $drv = self::$driver;
-        if ($drv === 'pgsql') {
-            $sql = 'INSERT INTO ny_settings(k, v) VALUES(?, ?) ' .
-                   'ON CONFLICT (k) DO UPDATE SET v = EXCLUDED.v';
-        } elseif ($drv === 'sqlite') {
-            $sql = 'INSERT OR REPLACE INTO ny_settings(k, v) VALUES(?, ?)';
-        } else {
-            $sql = 'INSERT INTO ny_settings(k, v) VALUES(?, ?) ' .
-                   'ON DUPLICATE KEY UPDATE v = VALUES(v)';
-        }
-        $pdo->prepare($sql)->execute([$k, $v]);
-    }
-
-    /** 名单：全量读 */
-    public static function rosterAll(): array
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            return [];
-        }
-        self::ensureRosterLogin();
-        $stmt = $pdo->query('SELECT sid, name, cls, grp, login FROM ny_roster ORDER BY id');
-        $rows = [];
-        foreach ($stmt->fetchAll() as $r) {
-            $rows[] = [
-                'sid'   => (string)$r['sid'],
-                'name'  => (string)$r['name'],
-                'cls'   => (string)$r['cls'],
-                'grp'   => (string)$r['grp'],
-                'login' => (string)($r['login'] ?? ''),
-            ];
-        }
-        return $rows;
-    }
-
-    /** 名单：清空后全量写 */
-    public static function rosterReplace(array $students): void
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
-            return;
-        }
-        self::ensureRosterLogin();
-        $pdo->beginTransaction();
-        try {
-            $pdo->exec('DELETE FROM ny_roster');
-            $st = $pdo->prepare('INSERT INTO ny_roster(sid, name, cls, grp, login) VALUES(?, ?, ?, ?, ?)');
-            foreach ($students as $s) {
-                $st->execute([
-                    (string)($s['sid'] ?? ''),
-                    (string)($s['name'] ?? ''),
-                    (string)($s['cls'] ?? ''),
-                    (string)($s['grp'] ?? ''),
-                    (string)($s['login'] ?? ''),
-                ]);
-            }
-            $pdo->commit();
-        } catch (Throwable $e) {
-            $pdo->rollBack();
-            throw $e;
-        }
-    }
-
-    /** 名单：行数 */
-    public static function rosterCount(): int
-    {
-        $pdo = self::pdo();
-        if ($pdo === null) {
         return 0;
     }
-        return (int)$pdo->query('SELECT COUNT(*) FROM ny_roster')->fetchColumn();
+
+    public static function ensureRosterLogin(): void {}
+
+    public static function settingsAll(): array
+    {
+        return [];
+    }
+
+    public static function settingsSet(string $k, string $v): void {}
+
+    public static function rosterAll(): array
+    {
+        return [];
+    }
+
+    public static function rosterReplace(array $students): void {}
+
+    public static function rosterCount(): int
+    {
+        return 0;
     }
 }

login.php

@@ -1,7 +1,8 @@
 <?php
 /**
- * 独立登录页：连接信息（系统地址/接口前缀/账号）已在安装向导配置，
- * 本页仅需输入密码（账号可改）完成卷王登录，成功后进入主系统。
+ * 独立登录页：连接信息（系统地址/接口前缀/账号）已在 data/config.json 中预置，
+ * 本页只需输入密码（账号可改）完成卷王登录，成功后进入主系统。
+ * 连接信息有变请在【设置】中修改。
  */
 declare(strict_types=1);
 require __DIR__ . '/bootstrap.php';
@@ -10,10 +11,6 @@ if (ny_is_auth()) {
     header('Location: index.php');
     exit;
 }
-if (!ny_is_installed()) {
-    header('Location: install.php');
-    exit;
-}
 
 $cfg = ny_load_config();
 $err = '';
@@ -75,7 +72,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         <button class="btn btn-primary" type="submit">登录</button>
       </div>
     </form>
-    <div class="forgot"><span style="font-size:12px;color:var(--text-3)">如系统连接信息已变更，请先完成<a href="install.php?force=1" style="color:var(--primary)">重新安装/配置</a></span></div>
   </div>
 </div>
 

tools/test-config-save.js

@@ -37,18 +37,37 @@ fs.writeFileSync(cfgFile, JSON.stringify({
   layout: 'default',
 }, null, 2));
 
+// 统一收尾钩子：恢复原 config + token + kill 子进程。任何退出路径都会触发
+let cleanedUp = false;
+function cleanup() {
+  if (cleanedUp) return;
+  cleanedUp = true;
+  try { srv && srv.kill('SIGKILL'); } catch(e){}
+  try { mock && mock.kill('SIGKILL'); } catch(e){}
+  try {
+    if (origCfg !== null) fs.writeFileSync(cfgFile, origCfg);
+    else if (fs.existsSync(cfgFile)) fs.unlinkSync(cfgFile);
+  } catch(e) { console.error('cleanup cfg failed:', e.message); }
+  try {
+    if (hasToken && fs.existsSync(tokenBak)) fs.renameSync(tokenBak, tokenFile);
+  } catch(e) { console.error('cleanup token failed:', e.message); }
+}
+process.on('exit', cleanup);
+process.on('SIGINT', () => { cleanup(); process.exit(1); });
+process.on('uncaughtException', (e) => { console.error('FATAL', e); cleanup(); process.exit(2); });
+
 // 2) 启动 mock 卷王
-const mock = spawn('node', ['tools/mock-server.js'], { cwd: ROOT, stdio: 'pipe' });
+let mock = null;
+let srv = null;
+mock = spawn('node', ['tools/mock-server.js'], { cwd: ROOT, stdio: 'pipe' });
 mock.stdout.on('data', d => process.stdout.write('[mock] ' + d));
 mock.stderr.on('data', d => process.stderr.write('[mock-err] ' + d));
 
 // 3) 启动 PHP 内置服务器（-t 让所有请求走 index.php 路由）
 const phpArgs = INI.split(/\s+/).filter(Boolean).concat(['-S', '127.0.0.1:' + PORT, '-t', ROOT]);
-const srv = spawn(PHP, phpArgs, { cwd: ROOT, stdio: 'pipe' });
+srv = spawn(PHP, phpArgs, { cwd: ROOT, stdio: 'pipe' });
 srv.stdout.on('data', d => process.stdout.write('[php] ' + d));
 srv.stderr.on('data', d => process.stderr.write('[php-err] ' + d));
-process.on('exit', () => { try { srv.kill('SIGKILL'); mock.kill('SIGKILL'); } catch(e){} });
-process.on('SIGINT', () => { srv.kill('SIGKILL'); mock.kill('SIGKILL'); process.exit(1); });
 
 let pass = 0, fail = 0;
 function chk(name, cond, extra) {
@@ -279,10 +298,7 @@ async function login() {
 
   console.log('\n结果：' + pass + ' 通过，' + fail + ' 失败');
 
-  // 清理
-  mock.kill('SIGTERM');
-  srv.kill('SIGTERM');
-  if (origCfg !== null) fs.writeFileSync(cfgFile, origCfg); else if (fs.existsSync(cfgFile)) fs.unlinkSync(cfgFile);
-  if (hasToken && fs.existsSync(tokenBak)) fs.renameSync(tokenBak, tokenFile);
+  // 清理 + 退出（统一走 cleanup 钩子，保证 config/token 一定被还原）
+  cleanup();
   setTimeout(() => process.exit(fail === 0 ? 0 : 1), 200);
-})().catch(e => { console.error('FATAL', e); try { mock.kill(); srv.kill(); } catch(z){}; process.exit(2); });
+})().catch(e => { console.error('FATAL', e); cleanup(); process.exit(2); });