diff --git a/admin_users.go b/admin_users.go
index 6c9190d..7ef1ca9 100644
--- a/admin_users.go
+++ b/admin_users.go
@@ -302,7 +302,8 @@ func (a *App) adminAdjustCredits(c *gin.Context) {
 		return
 	}
 	var in struct {
-		Amount int64 `json:"amount"`
+		Amount int64  `json:"amount"`
+		Reason string `json:"reason"`
 	}
 	if c.BindJSON(&in) != nil || in.Amount == 0 {
 		c.JSON(400, gin.H{"error": "amount cannot be zero"})
@@ -324,9 +325,15 @@ func (a *App) adminAdjustCredits(c *gin.Context) {
 		if err := tx.Save(&account).Error; err != nil {
 			return err
 		}
-		typ, reason := "grant", "admin credit adjustment"
+		typ, reason := "grant", strings.TrimSpace(in.Reason)
+		if reason == "" {
+			reason = "admin credit adjustment"
+		}
 		if in.Amount < 0 {
-			typ, reason = "admin_debit", "admin credit deduction"
+			typ = "admin_debit"
+			if strings.TrimSpace(in.Reason) == "" {
+				reason = "admin credit deduction"
+			}
 		}
 		return tx.Create(&CreditTransaction{UserID: uint(id), Type: typ, Amount: in.Amount, BalanceAfter: account.Balance, ReferenceType: "admin", ReferenceID: strconv.FormatUint(uint64(operator.ID), 10), Reason: reason}).Error
 	})
@@ -335,5 +342,7 @@ func (a *App) adminAdjustCredits(c *gin.Context) {
 		return
 	}
 	a.audit(operator.ID, "user.credits.adjust", "user", strconv.FormatUint(id, 10), "amount="+strconv.FormatInt(in.Amount, 10))
-	c.JSON(200, gin.H{"ok": true})
+	var account CreditAccount
+	_ = a.db.Where("user_id = ?", id).First(&account)
+	c.JSON(200, gin.H{"ok": true, "balance": account.Balance, "reserved": account.Reserved, "available": account.Balance - account.Reserved})
 }
diff --git a/index.html b/index.html
index f3c9955..5092d5f 100644
--- a/index.html
+++ b/index.html
@@ -6,7 +6,7 @@
 *{box-sizing:border-box}body{margin:0;background:#0b1220;color:#e7edf7;font:14px system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.wrap{max-width:1100px;margin:auto;padding:20px 16px 80px}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.brand{font-size:24px;font-weight:850}.brand b{color:#10b981}.sub,.muted{color:#8492a7}.sub{margin-top:4px;font-size:12px}.nav{display:flex;gap:6px;background:#101a2b;border:1px solid #22304a;border-radius:14px;padding:5px}.nav button{border:0;background:transparent;color:#9aa8bb;padding:9px 13px;border-radius:10px;cursor:pointer;font-weight:650}.nav button.active{background:#1c2b42;color:#fff}.badge{display:inline-flex;min-width:19px;height:19px;align-items:center;justify-content:center;border-radius:10px;background:#10b981;color:#06251b;font-size:11px;margin-left:5px}.view{display:none}.view.active{display:block}.hero{padding:44px 8px 34px;text-align:center}.hero h1{font-size:34px;margin:0 0 10px}.hero p{color:#8492a7;margin:0 0 24px}.searchbar{display:flex;max-width:720px;margin:auto;gap:8px}.input{width:100%;padding:12px 13px;border-radius:11px;border:1px solid #2a3852;background:#0c1525;color:#fff;outline:none}.input:focus{border-color:#10b981}.btn{border:0;border-radius:11px;padding:11px 16px;background:#10b981;color:#06251b;font-weight:750;cursor:pointer;white-space:nowrap}.btn.alt{background:#1b2940;color:#dbe5f2}.btn:disabled{opacity:.5;cursor:not-allowed}.card{background:#111b2c;border:1px solid #22304a;border-radius:17px;padding:18px;margin-bottom:15px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:13px}.title{font-size:17px;font-weight:780}.toolbar{display:flex;gap:8px;align-items:center}.result{display:grid;grid-template-columns:50px minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px;border-radius:12px}.result:hover{background:#162238}.cover{width:50px;height:50px;border-radius:10px;object-fit:cover;background:#1b2638}.name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.meta{font-size:12px;color:#8492a7;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.results{display:grid;gap:3px}.empty{text-align:center;padding:42px 12px;color:#8492a7}.loadmore{width:100%;margin-top:12px}.task-tabs{display:flex;gap:6px;overflow:auto;margin-bottom:14px}.task-tabs button{border:1px solid #283750;background:#0e1829;color:#aab6c7;border-radius:10px;padding:8px 12px;white-space:nowrap}.task-tabs button.active{background:#1c2b42;color:#fff}.status{font-size:12px;padding:5px 8px;border-radius:8px;background:#1c2a40}.done{color:#34d399}.error{color:#fb7185}.progress{height:5px;background:#1b2940;border-radius:4px;margin-top:8px;overflow:hidden}.progress i{display:block;height:100%;background:#10b981}.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.setting-card h3{margin:0 0 5px;font-size:15px}.setting-card p{margin:0 0 15px;color:#8492a7;font-size:12px}.field{margin-top:12px}.field label{display:block;color:#9aa8bb;font-size:12px;margin-bottom:6px}.row{display:flex;gap:9px}.row>*{min-width:0;flex:1}.notice{padding:10px 12px;background:#0d1728;border:1px solid #23314a;border-radius:10px;color:#9eacc0;font-size:12px;margin-top:12px}.recent{margin-top:4px}.mobile-nav{display:none}.quality-select{max-width:132px}.file-info{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.chip{display:inline-flex;align-items:center;padding:3px 7px;border-radius:7px;background:#17243a;color:#b9c6d8;font-size:11px}.chip.actual{color:#d9fbe9;background:#123126}.chip.warn{color:#fde7b0;background:#352b16}
 @media(max-width:720px){.wrap{padding:14px 12px 132px}.top{align-items:flex-start}.top .nav{display:none}.hero{padding:35px 4px 25px}.hero h1{font-size:28px}.searchbar{flex-wrap:wrap}.searchbar .input{flex-basis:100%}.searchbar select,.searchbar button{flex:1}.settings-grid{grid-template-columns:1fr}.result{grid-template-columns:42px minmax(0,1fr);gap:10px;padding:10px 6px}.cover{width:42px;height:42px}.result .toolbar{grid-column:2;display:flex;width:100%;gap:7px;margin-top:4px}.result .quality-select{max-width:none;min-width:0;flex:1}.result .toolbar .btn{padding:9px 14px;min-width:76px}.mobile-nav{position:fixed;left:10px;right:10px;bottom:max(10px,env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:3px;padding:5px;background:#111b2c;border:1px solid #2a3852;border-radius:16px;z-index:10}.mobile-nav button{border:0;background:transparent;color:#8492a7;padding:9px 4px;border-radius:11px;font-size:12px}.mobile-nav button.active{background:#1c2b42;color:#fff}.row{flex-wrap:wrap}.row>*{flex-basis:100%}}
 .authbar{display:flex;align-items:center;gap:8px;justify-content:flex-end;margin:-8px 0 14px}.userpill{padding:7px 10px;border:1px solid #22304a;border-radius:10px;background:#111b2c;color:#b9c6d8}.login-overlay{position:fixed;inset:0;background:#0b1220;z-index:50;display:flex;align-items:center;justify-content:center;padding:20px}.login-box{width:min(390px,100%);background:#111b2c;border:1px solid #22304a;border-radius:18px;padding:24px}.login-box h2{margin:0 0 6px}.login-box p{color:#8492a7;font-size:12px;margin:0 0 18px}.login-box .field{margin-top:12px}.login-error{color:#fb7185;font-size:12px;margin-top:10px;min-height:16px}
-.user-groups{display:grid;gap:16px}.user-group{border:1px solid var(--line);border-radius:14px;padding:14px;background:rgba(255,255,255,.02)}.group-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.group-list{display:grid;gap:8px}.user-row{align-items:center}.user-row .toolbar{display:flex;gap:6px;flex-wrap:wrap}.user-row .meta{line-height:1.55}</style>
+.user-groups{display:grid;gap:16px}.user-group{border:1px solid var(--line);border-radius:14px;padding:14px;background:rgba(255,255,255,.02)}.group-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.group-list{display:grid;gap:8px}.user-row{align-items:center}.user-row .toolbar{display:flex;gap:6px;flex-wrap:wrap}.user-row .meta{line-height:1.55}.admin-shell{display:grid;gap:16px}.admin-header{padding:6px 2px}.admin-header h2{margin:4px 0;font-size:27px}.eyebrow{font-size:11px;letter-spacing:1.5px;color:#10b981;font-weight:800}.admin-header p{margin:0;color:#8492a7}.admin-dashboard{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.admin-tile{border:1px solid #22304a;background:#111b2c;color:#e7edf7;border-radius:16px;padding:20px;text-align:left;display:grid;gap:6px;cursor:pointer}.admin-tile:hover{background:#162238;border-color:#30435f}.admin-tile span{font-size:22px}.admin-tile strong{font-size:16px}.admin-tile small{color:#8492a7}.admin-panel{background:#111b2c;border:1px solid #22304a;border-radius:17px;padding:16px}.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}.panel-head>div:nth-child(2){flex:1}.user-filters{display:flex;gap:7px;overflow:auto;margin:14px 0}.user-filters button{border:1px solid #283750;background:#0e1829;color:#aab6c7;border-radius:10px;padding:8px 13px;white-space:nowrap}.user-filters button.active{background:#1c2b42;color:#fff}.user-group{margin-top:14px}.group-head{display:flex;align-items:center;justify-content:space-between;padding:4px 2px 8px}.group-list{display:grid;gap:7px}.user-row{grid-template-columns:minmax(0,1fr) auto}.user-card{background:#0d1728;border:1px solid #23314a;border-radius:13px;padding:13px}.user-main{display:flex;justify-content:space-between;gap:12px;align-items:center}.user-stats{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px}.stat-chip{background:#17243a;color:#b9c6d8;padding:4px 8px;border-radius:8px;font-size:11px}.user-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.admin-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.summary-card{background:#0d1728;border:1px solid #23314a;border-radius:11px;padding:12px}.summary-card strong{display:block;font-size:18px;margin-top:4px}.ledger{display:grid;gap:7px;margin-top:12px}.ledger-item{padding:11px 12px;border:1px solid #23314a;background:#0d1728;border-radius:10px}.positive{color:#34d399}.negative{color:#fb7185}.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.detail-card{background:#0d1728;border:1px solid #23314a;border-radius:13px;padding:14px}.detail-card h4{margin:0 0 10px}.detail-value{font-size:24px;font-weight:800}.detail-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}@media(max-width:720px){.admin-dashboard{grid-template-columns:1fr}.admin-panel{padding:12px}.admin-create>*{flex-basis:100%}.user-main{align-items:flex-start;flex-direction:column}.user-actions .btn{flex:1;min-width:100px}.admin-summary{grid-template-columns:1fr 1fr}.detail-grid{grid-template-columns:1fr}}</style>
 </head>
 <body><div id="loginOverlay" class="login-overlay"><form id="loginForm" class="login-box"><h2>AM Downloader</h2><p>登录后管理你的下载任务、积分和同步设置。</p><div class="field"><label>用户名</label><input id="loginUser" class="input" autocomplete="username"></div><div class="field"><label>密码</label><input id="loginPass" type="password" class="input" autocomplete="current-password"></div><div id="loginError" class="login-error"></div><button class="btn" style="width:100%;margin-top:10px">登录</button></form></div><div class="wrap">
 <header class="top"><div><div class="brand">AM <b>Downloader</b></div><div class="sub">搜索 · 下载 · WebDAV 同步</div></div><nav class="nav" id="topNav"><button data-view="home">首页</button><button data-view="search">搜索</button><button data-view="queue">下载<span id="navBadge" class="badge">0</span></button><button data-view="account">账户</button><button id="adminNav" data-view="admin">管理</button><button data-view="settings">设置</button></nav></header><div class="authbar"><span id="userPill" class="userpill"></span><button id="logoutBtn" class="btn alt">退出</button></div>
@@ -15,7 +15,7 @@
 <section id="search" class="view"><div class="card"><div class="section-head"><div><div class="title">搜索音乐</div><div class="muted">支持歌曲名、歌手、专辑</div></div></div><form id="searchForm" class="row"><input id="keyword" class="input" placeholder="输入关键词" autocomplete="off"><select id="source" class="input"><option value="kw">小窝</option><option value="kg">小狗</option><option value="wy">小云</option><option value="tx">小Q</option></select><button class="btn">搜索</button></form></div><div id="resultsCard" class="card" style="display:none"><div class="section-head"><div><div class="title">搜索结果</div><div id="resultHint" class="muted"></div></div></div><div id="results" class="results"></div><button id="loadMore" class="btn alt loadmore" style="display:none">加载更多</button></div></section>
 <section id="queue" class="view"><div class="card"><div class="section-head"><div><div class="title">下载队列</div><div class="muted">任务会自动处理；本地文件是否保留由“设置 → 下载 → 本地文件策略”决定。</div></div></div><div id="taskTabs" class="task-tabs"><button class="active" data-filter="all">全部</button><button data-filter="active">进行中</button><button data-filter="done">已完成</button><button data-filter="error">失败</button></div><div id="tasks"></div></div></section>
 <section id="account" class="view"><div class="settings-grid"><div class="card setting-card"><h3>账户与积分</h3><p>积分用于新的实际下载；失败会自动退回。</p><div class="notice" id="creditPanel">加载中…</div><div class="field"><label>兑换码</label><input id="redeemCode" class="input" placeholder="XXXX-XXXX-XXXX"><button id="redeemBtn" class="btn" style="margin-top:9px">兑换积分</button></div></div><div id="userDavCard" class="card setting-card"><h3>我的 WebDAV</h3><p>仅 privileged / admin 可配置。密码不会回显。</p><div class="field"><label>地址</label><input id="userDavUrl" class="input"></div><div class="row"><input id="userDavUser" class="input" placeholder="用户名"><input id="userDavPass" type="password" class="input" placeholder="新密码（留空不修改）"></div><div class="field"><label>根目录</label><input id="userDavRoot" class="input" placeholder="Music"></div><div class="row" style="margin-top:12px"><button id="testUserDav" class="btn alt">测试</button><button id="saveUserDav" class="btn">保存</button></div></div></div></section>
-<section id="admin" class="view"><div class="card"><div class="section-head"><div><div class="title">用户管理</div><div class="muted">创建账号、分配角色、启用或禁用。</div></div></div><div class="row"><input id="newUser" class="input" placeholder="用户名"><input id="newPass" type="password" class="input" placeholder="初始密码（8+）"><select id="newRole" class="input"><option value="user">user</option><option value="privileged">privileged</option><option value="admin">admin</option></select><input id="newCredits" class="input" type="number" min="0" value="0" placeholder="积分"><button id="createUser" class="btn">创建</button></div><div class="user-groups" id="users" style="margin-top:14px"></div></div><div class="card"><div class="section-head"><div><div class="title">兑换码批次</div><div class="muted">生成后明文兑换码仅在创建结果中返回。</div></div></div><div class="row"><input id="batchCredits" class="input" type="number" min="1" value="10" placeholder="每码积分"><input id="batchCount" class="input" type="number" min="1" max="10000" value="10" placeholder="数量"><input id="batchNote" class="input" placeholder="备注"><button id="createBatch" class="btn">生成兑换码</button></div><pre id="batchOutput" class="notice" style="white-space:pre-wrap;max-height:220px;overflow:auto"></pre><div id="batches"></div></div><div class="card"><div class="section-head"><div class="title">审计日志</div><button id="loadAudit" class="btn alt">刷新</button></div><div id="audit" class="muted"></div></div></section>
+<section id="admin" class="view"><div class="admin-shell"><div class="admin-header"><div><div class="eyebrow">ADMIN CENTER</div><h2>管理中心</h2><p>用户、积分、兑换码与审计统一管理。</p></div></div><div class="admin-dashboard" id="adminDashboard"><button class="admin-tile" data-admin-view="users"><span>👥</span><strong>用户管理</strong><small>账号、角色、状态与积分</small></button><button class="admin-tile" data-admin-view="credits"><span>◎</span><strong>积分管理</strong><small>余额与积分流水</small></button><button class="admin-tile" data-admin-view="redeem"><span>◇</span><strong>兑换码</strong><small>批次、使用与撤销</small></button><button class="admin-tile" data-admin-view="audit"><span>≡</span><strong>审计日志</strong><small>管理员操作记录</small></button></div><div class="admin-panel" id="adminUsersPanel" style="display:none"><div class="panel-head"><button class="btn alt admin-back">← 管理中心</button><div><div class="title">用户管理</div><div class="muted">按用户组查看，不再混在一起。</div></div></div><div class="row admin-create"><input id="newUser" class="input" placeholder="用户名"><input id="newPass" type="password" class="input" placeholder="初始密码（8+）"><select id="newRole" class="input"><option value="user">普通用户</option><option value="privileged">高级用户</option><option value="admin">管理员</option></select><input id="newCredits" class="input" type="number" min="0" value="0" placeholder="初始积分"><button id="createUser" class="btn">创建用户</button></div><div class="user-filters"><button class="active" data-role-filter="all">全部</button><button data-role-filter="admin">管理员</button><button data-role-filter="privileged">高级用户</button><button data-role-filter="user">普通用户</button></div><div id="users"></div></div><div class="admin-panel" id="adminCreditsPanel" style="display:none"><div class="panel-head"><button class="btn alt admin-back">← 管理中心</button><div><div class="title">积分管理</div><div class="muted">集中查看积分流水；具体用户调整从用户详情进入。</div></div></div><div class="notice">积分调整、下载扣除、兑换和退款都会记录在积分流水中。</div><div id="adminCreditSummary" class="admin-summary"></div><div id="creditLedger" class="ledger"></div></div><div class="admin-panel" id="adminRedeemPanel" style="display:none"><div class="panel-head"><button class="btn alt admin-back">← 管理中心</button><div><div class="title">兑换码</div><div class="muted">按批次管理兑换码。</div></div></div><div class="row"><input id="batchCredits" class="input" type="number" min="1" value="10" placeholder="每码积分"><input id="batchCount" class="input" type="number" min="1" max="10000" value="10" placeholder="数量"><input id="batchNote" class="input" placeholder="备注"><button id="createBatch" class="btn">生成兑换码</button></div><pre id="batchOutput" class="notice" style="white-space:pre-wrap;max-height:220px;overflow:auto"></pre><div id="batches"></div></div><div class="admin-panel" id="adminAuditPanel" style="display:none"><div class="panel-head"><button class="btn alt admin-back">← 管理中心</button><div><div class="title">审计日志</div><div class="muted">记录管理员对账号和系统的关键操作。</div></div><button id="loadAudit" class="btn alt">刷新</button></div><div id="audit" class="ledger"></div></div><div class="admin-panel" id="adminUserDetail" style="display:none"><div class="panel-head"><button class="btn alt" id="backToUsers">← 用户管理</button><div><div class="title" id="detailUserName">用户详情</div><div class="muted" id="detailUserMeta"></div></div></div><div id="userDetailContent"></div></div></div></section>
 <section id="settings" class="view"><div class="settings-grid"><div class="card setting-card"><h3>音乐 API</h3><p>用于搜索和解析音乐资源，与 Downloader Web 服务分离。</p><div class="field"><label>API 地址</label><input id="amApi" class="input" placeholder="http://127.0.0.1:9530"></div><div class="notice">当前服务架构：Downloader Web 使用 9540，音乐 API 使用 9530。</div></div><div class="card setting-card"><h3>下载</h3><p>设置文件保存位置与默认音质。</p><div class="field"><label>本地下载目录</label><input id="downloadDir" class="input"></div><div class="field"><label>本地文件策略</label><select id="localFilePolicy" class="input"><option value="keep">保留本地文件</option><option value="delete_after_upload">WebDAV 上传成功后删除本地文件</option></select><div class="notice">仅在 WebDAV 上传成功或远端已存在相同大小文件后删除本地成品；上传失败不会删除。</div></div><div class="field"><label>默认下载品质</label><select id="defaultQuality" class="input"><option value="standard">标准</option><option value="exhigh">高品质</option><option value="lossless">无损</option><option value="hires">Hi-Res</option><option value="sky">Sky</option><option value="jyeffect">高清音效</option><option value="jymaster">母带</option><option value="atmos">Atmos</option><option value="atmos_plus">Atmos+</option><option value="master">Master</option></select></div></div><div class="card setting-card"><h3>WebDAV</h3><p>可选的 NAS/远程音乐库同步配置。</p><div class="field"><label>WebDAV 地址</label><input id="davUrl" class="input" placeholder="https://nas.example.com/dav/music"></div><div class="row"><div class="field"><label>用户名</label><input id="davUser" class="input"></div><div class="field"><label>密码</label><input id="davPass" type="password" class="input"></div></div><div class="field"><label>远程音乐目录</label><input id="davPath" class="input" placeholder="Music"></div><div class="field"><label>同曲不同音质</label><select id="davVersionPolicy" class="input"><option value="keep">保留所有版本</option><option value="replace_lower">高音质下载后清理旧低音质</option></select><div class="notice">“清理旧低音质”只删除数据库中已确认属于同一首歌、且音质低于当前版本的旧 WebDAV 文件，不会扫描或删除未知文件。</div></div><div class="row" style="margin-top:15px"><button id="testDav" type="button" class="btn alt">测试连接</button><button id="saveSettings" type="button" class="btn">保存设置</button></div></div></div></section>
 </main><nav class="mobile-nav" id="mobileNav"><button data-view="home">⌂<br>首页</button><button data-view="search">⌕<br>搜索</button><button data-view="queue">♫ <span id="mobileBadge">0</span><br>下载</button><button data-view="account">◎<br>账户</button><button id="mobileAdminNav" data-view="admin" style="display:none">⚙<br>管理</button><button data-view="settings">⚙<br>设置</button></nav></div>
 <script>
@@ -23,17 +23,23 @@ const $=id=>document.getElementById(id);let searchPage=1,searchKeyword='',search
 async function api(u,o){const r=await fetch('/api'+u,o);if(r.status===401){showLogin();throw new Error('请先登录')}if(!r.ok)throw new Error(await r.text());return r.status===204?null:r.json()}
 function showLogin(){document.getElementById('loginOverlay').style.display='flex'}
 async function loadAccount(){try{const c=await api('/credits');$('creditPanel').textContent='余额 '+c.balance+' · 预留 '+c.reserved+' · 可用 '+c.available;const u=window.currentUser||{};$('userDavCard').style.display=(u.role==='admin'||u.role==='privileged')?'':'none';if(u.role==='admin'||u.role==='privileged'){const d=await api('/webdav/config');$('userDavUrl').value=d.url||'';$('userDavUser').value=d.username||'';$('userDavRoot').value=d.rootPath||''}}catch(e){$('creditPanel').textContent=e.message}}
-async function loadAdmin(){if(!window.isAdmin)return;try{const x=await api('/admin/users');const users=x.data||[];const groups=[['admin','管理员'],['privileged','高级用户'],['user','普通用户']];$('users').innerHTML=groups.map(([role,label])=>{const list=users.filter(u=>u.role===role);return '<div class="user-group"><div class="group-head"><div><div class="title">'+label+'</div><div class="muted">'+list.length+' 个账号</div></div></div><div class="group-list">'+(list.length?list.map(u=>{const next=u.status==='active'?'disabled':'active';return '<div class="result user-row"><div><div class="name">'+esc(u.username)+'</div><div class="meta">#'+u.id+' · '+esc(u.role)+' · '+esc(u.status)+'</div><div class="meta" id="credit-'+u.id+'">积分加载中…</div></div><div class="toolbar"><button class="btn alt" onclick="adjustCredits('+u.id+',1)">+积分</button><button class="btn alt" onclick="adjustCredits('+u.id+',-1)">-积分</button><button class="btn alt" onclick="resetUserPassword('+u.id+')">重置密码</button><button class="btn alt" onclick="toggleUser('+u.id+',\''+next+'\')">'+(u.status==='active'?'禁用':'启用')+'</button></div></div>'}).join(''):'<div class="empty">暂无账号</div>')+'</div></div>'}).join('');for(const u of users){loadUserCredit(u.id)}const b=await api('/admin/redeem');$('batches').innerHTML=(b.data||[]).map(x=>'<div class="notice">#'+x.id+' · '+x.credits+' 积分 × '+x.count+(x.note?' · '+esc(x.note):'')+' <button class="btn alt" onclick="revokeBatch('+x.id+')">撤销未使用</button></div>').join('');const l=await api('/admin/audit');$('audit').innerHTML=(l.data||[]).map(x=>'<div class="notice">'+esc(x.action)+' · '+esc(x.targetType)+'#'+esc(x.targetId)+' · '+esc(x.metadata||'')+' · '+esc(x.createdAt)+'</div>').join('')||'暂无日志'}catch(e){$('users').textContent=e.message}}
-async function loadUserCredit(id){try{const c=await api('/admin/users/'+id+'/credits');$('credit-'+id).textContent='余额 '+c.balance+' · 预留 '+c.reserved+' · 可用 '+c.available+' · 下载 '+c.tasks}catch(e){const el=$('credit-'+id);if(el)el.textContent='积分加载失败'}}
-async function adjustCredits(id,sign){const raw=prompt(sign>0?'给该用户增加多少积分？':'从该用户扣除多少积分？','10');if(raw===null)return;const amount=Number(raw);if(!Number.isInteger(amount)||amount<=0){alert('请输入正整数');return}try{await api('/admin/users/'+id+'/credits',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({amount:sign*amount})});loadUserCredit(id);loadAdmin()}catch(e){alert('积分调整失败：'+e.message)}}
-async function resetUserPassword(id){const p=prompt('输入新密码（至少 8 位）：');if(p===null)return;if(p.length<8){alert('密码至少 8 位');return}try{await api('/admin/users/'+id,{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify({password:p})});alert('密码已重置，该用户需要重新登录')}catch(e){alert('重置失败：'+e.message)}}
-async function toggleUser(id,status){try{await api('/admin/users/'+id,{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify({status})});loadAdmin()}catch(e){alert('操作失败：'+e.message)}}
-async function adjustCredits(id,sign){const raw=prompt(sign>0?'增加多少积分？':'扣除多少积分？','10');if(raw===null)return;const amount=Math.floor(Number(raw));if(!Number.isFinite(amount)||amount<=0){alert('请输入正整数');return}const reason=prompt('调整原因（可选）','管理员调整积分');if(reason===null)return;try{const x=await api('/admin/users/'+id+'/credits',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({amount:sign*amount,reason})});alert('调整成功，当前可用积分：'+x.available);loadAdmin()}catch(e){alert('积分调整失败：'+e.message)}}
-async function resetUserPassword(id){const pass=prompt('输入新密码（至少 8 位）：');if(pass===null)return;if(pass.length<8){alert('密码至少 8 位');return}try{await api('/admin/users/'+id,{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify({password:pass})});alert('密码已重置，该用户的其他登录会话已失效');loadAdmin()}catch(e){alert('密码重置失败：'+e.message)}}
-async function revokeBatch(id){await api('/admin/redeem/'+id+'/revoke',{method:'POST'});loadAdmin()}
+let adminUsersCache=[];let adminRoleFilter='all';
+function showAdminPanel(name){['adminDashboard','adminUsersPanel','adminCreditsPanel','adminRedeemPanel','adminAuditPanel','adminUserDetail'].forEach(id=>$(id).style.display='none');$(name).style.display='block';if(name==='adminUsersPanel')renderAdminUsers();if(name==='adminCreditsPanel')loadCreditLedger();if(name==='adminRedeemPanel')loadRedeemAdmin();if(name==='adminAuditPanel')loadAuditAdmin()}
+async function loadAdmin(){if(!window.isAdmin)return;try{const x=await api('/admin/users');adminUsersCache=x.data||[];showAdminPanel('adminDashboard')}catch(e){$('adminDashboard').innerHTML='<div class="notice">加载失败：'+esc(e.message)+'</div>'}}
+function renderAdminUsers(){const users=adminUsersCache.filter(u=>adminRoleFilter==='all'||u.role===adminRoleFilter);const groups=[['admin','管理员'],['privileged','高级用户'],['user','普通用户']];$('users').innerHTML=groups.filter(g=>adminRoleFilter==='all'||adminRoleFilter===g[0]).map(([role,label])=>{const list=users.filter(u=>u.role===role);return `<div class="user-group"><div class="group-head"><div><div class="title">${label}</div><div class="muted">${list.length} 个账号</div></div></div><div class="group-list">${list.length?list.map(u=>`<div class="user-card"><div class="user-main"><div><div class="name">${esc(u.username)}</div><div class="meta">#${u.id} · ${esc(u.status)}</div><div class="user-stats"><span class="stat-chip" id="credit-${u.id}">积分加载中…</span></div></div><div class="user-actions"><button class="btn alt" onclick="openUserDetail(${u.id})">查看详情</button><button class="btn alt" onclick="toggleUser(${u.id},'${u.status==='active'?'disabled':'active'}')">${u.status==='active'?'禁用':'启用'}</button></div></div></div>`).join(''):'<div class="empty">暂无账号</div>'}</div></div>`}).join('');users.forEach(u=>loadUserCredit(u.id))}
+async function loadUserCredit(id){try{const c=await api('/admin/users/'+id+'/credits');const e=$('credit-'+id);if(e)e.textContent='余额 '+c.balance+' · 可用 '+c.available+' · 下载 '+c.tasks}catch(e){}}
+async function openUserDetail(id){const u=adminUsersCache.find(x=>x.id===id);if(!u)return;const next=u.status==='active'?'disabled':'active';$("detailUserName").textContent=u.username;$("detailUserMeta").textContent="#"+u.id+" · "+u.role+" · "+u.status;$("userDetailContent").innerHTML="<div class='detail-grid'><div class='detail-card'><h4>账户</h4><div class='muted'>角色</div><div>"+esc(u.role)+"</div><div class='muted' style='margin-top:8px'>状态</div><div>"+esc(u.status)+"</div><div class='detail-actions'><button class='btn alt' id='detailReset'>重置密码</button><button class='btn alt' id='detailToggle'>"+(u.status==='active'?'禁用账户':'启用账户')+"</button></div></div><div class='detail-card' id='detailCredits'>加载积分中…</div></div>";showAdminPanel('adminUserDetail');$("detailReset").onclick=()=>resetUserPassword(id);$("detailToggle").onclick=()=>toggleUser(id,next);try{const c=await api('/admin/users/'+id+'/credits');$("detailCredits").innerHTML="<h4>积分</h4><div class='detail-value'>"+c.balance+"</div><div class='muted'>可用 "+c.available+" · 预留 "+c.reserved+" · 下载 "+c.tasks+" 次</div><div class='detail-actions'><button class='btn' id='detailAdd'>增加积分</button><button class='btn alt' id='detailSub'>扣除积分</button></div>";$("detailAdd").onclick=()=>adjustCredits(id,1);$("detailSub").onclick=()=>adjustCredits(id,-1)}catch(e){$("detailCredits").textContent=e.message}}
+async function adjustCredits(id,sign){const raw=prompt(sign>0?'增加多少积分？':'扣除多少积分？','10');if(raw===null)return;const amount=Math.floor(Number(raw));if(!Number.isFinite(amount)||amount<=0){alert('请输入正整数');return}const reason=prompt('调整原因（可选）','管理员调整积分');if(reason===null)return;try{const x=await api('/admin/users/'+id+'/credits',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({amount:sign*amount,reason})});alert('调整成功，当前可用积分：'+x.available);openUserDetail(id);loadAdmin()}catch(e){alert('积分调整失败：'+e.message)}}
+async function resetUserPassword(id){const pass=prompt('输入新密码（至少 8 位）：');if(pass===null)return;if(pass.length<8){alert('密码至少 8 位');return}try{await api('/admin/users/'+id,{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify({password:pass})});alert('密码已重置，该用户的其他登录会话已失效')}catch(e){alert('密码重置失败：'+e.message)}}
+async function loadCreditLedger(){try{const u=await api('/admin/users');const users=u.data||[];let total=0;for(const x of users){try{const c=await api('/admin/users/'+x.id+'/credits');total+=Number(c.balance)||0}catch(e){}}$('adminCreditSummary').innerHTML='<div class="summary-card">用户<strong>'+users.length+'</strong></div><div class="summary-card">当前余额<strong>'+total+'</strong></div><div class="summary-card">单位<strong>积分</strong></div>';$('creditLedger').innerHTML='<div class="notice">积分流水按用户查看。进入「用户管理 → 查看详情」即可调整积分并查看该用户当前余额。</div>'}catch(e){$('adminCreditSummary').textContent=e.message}}
+async function loadRedeemAdmin(){const b=await api('/admin/redeem');$('batches').innerHTML=(b.data||[]).map(x=>'<div class="notice">#'+x.id+' · '+x.credits+' 积分 × '+x.count+(x.note?' · '+esc(x.note):'')+' <button class="btn alt" onclick="revokeBatch('+x.id+')">撤销未使用</button></div>').join('')}
+async function loadAuditAdmin(){const l=await api('/admin/audit');$('audit').innerHTML=(l.data||[]).map(x=>'<div class="ledger-item"><b>'+esc(x.action)+'</b><div class="meta">'+esc(x.targetType)+'#'+esc(x.targetId)+' · '+esc(x.metadata||'')+' · '+esc(x.createdAt)+'</div></div>').join('')||'<div class="empty">暂无日志</div>'}
+async function toggleUser(id,status){const u=adminUsersCache.find(x=>x.id===id);status=status||(u&&u.status==='active'?'disabled':'active');try{await api('/admin/users/'+id,{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify({status})});const u=adminUsersCache.find(x=>x.id===id);if(u)u.status=status;renderAdminUsers()}catch(e){alert('操作失败：'+e.message)}}
+async function revokeBatch(id){try{await api('/admin/redeem/'+id+'/revoke',{method:'POST'});loadRedeemAdmin()}catch(e){alert('撤销失败：'+e.message)}}
 
 function hideLogin(){document.getElementById('loginOverlay').style.display='none'}
 async function initAuth(){try{const x=await api('/auth/me');const u=x.user;window.currentUser=u;window.isAdmin=u.role==='admin';document.getElementById('userPill').textContent=u.username+' · '+u.role;document.getElementById('settings').style.display=u.role==='admin'?'':'none';document.getElementById('adminNav').style.display=u.role==='admin'?'':'none';document.getElementById('mobileAdminNav').style.display=u.role==='admin'?'':'none';document.querySelectorAll('[data-view=\"settings\"]').forEach(x=>x.style.display=u.role==='admin'?'':'none');const c=await api('/credits');document.getElementById('userPill').textContent=u.username+' · '+u.role+' · 积分 '+c.balance+' / 可用 '+c.available;hideLogin();return true}catch(e){showLogin();return false}}
+document.querySelectorAll('[data-admin-view]').forEach(b=>b.addEventListener('click',()=>showAdminPanel('admin'+b.dataset.adminView.charAt(0).toUpperCase()+b.dataset.adminView.slice(1)+'Panel')));document.querySelectorAll('.admin-back').forEach(b=>b.addEventListener('click',()=>showAdminPanel('adminDashboard')));document.querySelectorAll('[data-role-filter]').forEach(b=>b.addEventListener('click',()=>{document.querySelectorAll('[data-role-filter]').forEach(x=>x.classList.remove('active'));b.classList.add('active');adminRoleFilter=b.dataset.roleFilter;renderAdminUsers()}));$('backToUsers').addEventListener('click',()=>showAdminPanel('adminUsersPanel'));
 $('loginForm').addEventListener('submit',async e=>{e.preventDefault();$('loginError').textContent='登录中…';try{const x=await fetch('/api/auth/login',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({username:$('loginUser').value.trim(),password:$('loginPass').value})});if(!x.ok)throw new Error('用户名或密码错误');await initAuth();go(location.hash.slice(1)||'home');loadRecent();loadAccount()}catch(e){$('loginError').textContent=e.message}});
 $('logoutBtn').addEventListener('click',async()=>{try{await api('/auth/logout',{method:'POST'})}finally{showLogin()}});
 function esc(s){return String(s??'').replace(/[&<>"']/g,m=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[m]))}