fix: restore recording playback and default to 30-day retention

frontend/src/components/Workspace.vue

@@ -34,6 +34,7 @@ import DeviceNetworkPanel from './DeviceNetworkPanel.vue'
     <section id="page-playback" class="page" hidden>
       <div class="section-head"><h2>回到那一刻 <small>光阴</small></h2></div>
       <div class="panel playback-controls"><label>镜头 / 通道<select id="play-camera"></select></label><label>录像来源<select id="archive-source"><option value="recorder">录像机原有录像（待接入）</option><option value="local">小电脑本机录像</option></select></label><label>日期<input id="play-date" type="date"></label><button id="query-recordings">查找录像</button><span id="play-info">选择日期，查看实际录像时段</span></div>
+      <aside id="recording-health" class="panel" aria-label="本机录像状态" hidden><div class="section-head"><strong id="recording-health-text" role="status"></strong><button id="recording-configure" class="quiet" hidden>录像设置</button></div><p id="recording-policy-note" class="description"></p><p id="recording-start-note" class="description"></p></aside>
       <div class="video-panel"><video id="play-video" controls playsinline></video><div id="play-empty" class="video-empty">选择一个有录像的时间段</div></div>
       <div class="panel"><div class="timeline-head"><strong>当日时间轴</strong><span><i class="legend"></i> 有录像的时段 · 点击定位</span></div><canvas id="timeline" height="76" aria-label="录像时间轴"></canvas><div class="time-labels"><span>00:00</span><span>06:00</span><span>12:00</span><span>18:00</span><span>24:00</span></div><div class="seek-row"><label>定位时间 <input id="seek-time" type="time" step="1" value="12:00:00"></label><button id="seek-button" class="secondary">定位播放</button><a id="download" class="button secondary" hidden>下载原始片段</a></div></div>
       <div class="panel"><div class="playback-tools"><label class="check"><input id="play-autonext" type="checkbox" checked>自动续播下一时段（跳过空档）</label><button id="play-snapshot" class="quiet">回放截图</button><span id="play-position" role="status"></span></div><details class="clip-editor"><summary>选取并下载指定片段</summary><form id="clip-form"><div class="form-grid"><label>开始时间<input id="clip-start" type="datetime-local" step="1" required></label><label>结束时间<input id="clip-end" type="datetime-local" step="1" required></label></div><div class="playback-tools"><button type="button" class="quiet" data-clip-mark="start">当前位置作起点</button><button type="button" class="quiet" data-clip-mark="end">当前位置作终点</button><button type="submit">生成下载链接</button><a id="clip-download" class="button secondary" hidden>下载所选片段</a></div><p id="clip-status" role="status" class="description"></p><p class="description">每段最多一小时，不可跨越无录像时段。下载保留原始编码，剪辑边界可能受设备关键帧影响。</p></form></details></div><div id="recording-list" class="recording-list"></div>
@@ -42,7 +43,7 @@ import DeviceNetworkPanel from './DeviceNetworkPanel.vue'
     <section id="page-objects" class="page" hidden><div class="section-head"><h2>一物一档 <small>设备 · 归属</small></h2><div class="device-actions"><button class="quiet" data-page="sites" data-admin>管理区域</button><button data-action="new-asset">＋ 摄像机</button><button data-action="new-recorder">＋ 录像机</button><button id="new-device" data-admin>＋ 其他设备</button></div></div><p class="description">同一设备可同时记录类型、区域、所有人、负责人和标签。分组顺序可自由组合，例如“灯 → 卧室”或“负责人 → 类型 → 区域”。人员归属不自动授予访问权限。</p><div class="panel device-view-controls"><div class="device-search-row"><label>设备类型<select id="device-type"><option value="">所有类型</option></select></label><label>搜索设备或人员<input id="device-search" type="search" placeholder="例如：卧室 灯；也可查 IP、品牌、型号、人员"></label><button id="device-clear" type="button" class="quiet" hidden>清除设备筛选</button></div><div class="device-actions view-presets" role="group" aria-label="设备分组方式"><button type="button" class="quiet" data-group-preset="space,type">按区域查看</button><button type="button" class="quiet" data-group-preset="type,space">按类型查看</button><button type="button" class="quiet" data-group-preset="manager,type,space">按负责人查看</button></div><details class="group-custom"><summary>自定义分组顺序</summary><p class="description">依次分组（前面的维度优先，区域按你定义的完整层级展示）</p><div id="device-group-order" class="device-group-order"></div><div class="device-actions"><button id="device-group-add" class="quiet">＋ 增加分组维度</button><button data-admin id="device-view-save" class="secondary">保存为本归属的默认视图</button></div></details><p id="device-count" class="description"></p></div><div class="device-actions" role="group" aria-label="设备展示方式"><button id="devices-card-view" class="quiet" aria-pressed="true">设备卡片</button><button id="devices-topology-view" class="quiet" aria-pressed="false">网络拓扑</button></div><DeviceCollection /><NetworkMap /></section>
     <section id="page-recorders" class="page" hidden><div class="section-head"><h2>录像机 <small>存影</small></h2><button data-action="new-recorder">＋ 添加录像机</button></div><p class="description">统一保存录像机地址与账号，镜头通道关联录像机。实时取流使用 RTSP；读取录像机已有历史录像，需要该型号的回放接口适配。</p><div id="recorder-list" class="site-grid"></div></section>
     <section id="page-sites" class="page" hidden><div class="section-head"><h2>区域与空间 <small>自定层级</small></h2><button data-action="new-site">＋ 新建空间</button></div><p class="description">在当前家庭或场所下自行划分区域，不限定层级数量。例如“一楼 → 卧室”或“厂区 → 车间 → 产线”。名称和区域类别均由你定义，地址信息按需填写。</p><div id="site-list" class="site-grid"></div></section>
-    <section id="page-storage" class="page" hidden><div class="section-head"><h2>录像与存储 <small>留存</small></h2></div><div class="storage-grid"><form id="storage-form" class="panel"><h3>录像保留策略</h3><label>保留天数<input name="retentionDays" type="number" min="1" max="365" required></label><label>录像容量上限（GB）<input name="maxGB" type="number" min="5" max="100000" required></label><label>磁盘预留空间（GB）<input name="reserveGB" type="number" min="2" max="1000" required></label><p class="description">超过保留天数的录像会自动删除。达到容量上限或预留空间不足时暂停录像；调整策略后自动恢复。容量每 20 秒检查一次，可能有少量超出。</p><button type="submit">保存策略</button><span class="form-error"></span></form><div class="panel"><h3>运行状态</h3><dl id="storage-status"></dl><p class="description">开启摄像头的“持续录像”后，服务会保存主码流。预览默认使用主码流高清画面（最高 1920×1080、15 帧/秒），也可切换子码流流畅画面（最高 768×432、10 帧/秒）。本机录像保留设备原始编码。</p><h3>最近操作</h3><div id="audit-list"></div></div></div></section>
+    <section id="page-storage" class="page" hidden><div class="section-head"><h2>录像与存储 <small>留存</small></h2></div><div class="storage-grid"><form id="storage-form" class="panel"><h3>录像保留策略</h3><label>保留天数<input name="retentionDays" type="number" min="1" max="365" required></label><label>录像容量上限（GB）<input name="maxGB" type="number" min="5" max="100000" required></label><label>磁盘预留空间（GB）<input name="reserveGB" type="number" min="2" max="1000" required></label><p class="description">默认最长保留 30 天，超过设定天数的录像会自动删除。容量上限由全部摄像头共用；达到上限或预留空间不足时暂停录像，空间恢复后继续。实际可留时长取决于码率和路数，未必存满设定天数。容量每 20 秒检查一次，可能有少量超出。</p><button type="submit">保存策略</button><span class="form-error"></span></form><div class="panel"><h3>运行状态</h3><dl id="storage-status"></dl><p class="description">开启摄像头的“持续录像”后，服务会保存主码流。预览默认使用主码流高清画面（最高 1920×1080、15 帧/秒），也可切换子码流流畅画面（最高 768×432、10 帧/秒）。本机录像保留设备原始编码。</p><h3>最近操作</h3><div id="audit-list"></div></div></div></section>
     <section id="page-heritage-records" class="page" hidden><div class="section-head"><h2 id="heritage-records-title">文化与家风</h2><div><button class="quiet" data-page="heritage">返回家庭传承</button><button id="heritage-new">＋ 新建档案</button></div></div><div class="panel heritage-controls"><label>查找档案<input id="heritage-search" type="search" placeholder="名称、内容、相关人员"></label><label class="check"><input id="heritage-archived" type="checkbox">包含归档资料</label><button id="heritage-reload" class="quiet">重新载入</button></div><p id="heritage-error" class="form-error" role="status"></p><div id="heritage-list" class="site-grid"></div><aside id="heritage-detail" class="panel" hidden></aside></section>
     <section id="page-family" class="page" hidden>
       <div class="section-head"><h2>家族的来处与延续 <small>世系 · 传承</small></h2><div><button id="family-reload" class="quiet">重新载入</button><button id="family-export" class="quiet">导出家谱</button><button id="new-person">＋ 录入人物</button></div></div>