feat: add instance management to dashboard

public/index.html

@@ -29,7 +29,11 @@
           <span class="ribbon-text">SimAdmin 岛屿</span>
         </div>
         <p class="sidebar-subtitle">像 NookPhone 一样管理每个 CPE 小岛</p>
-        <button id="refreshBtn" class="animal-btn primary-btn" type="button">刷新状态</button>
+        <div class="sidebar-actions">
+          <button id="homeBtn" class="animal-btn default-btn" type="button">返回首页</button>
+          <button id="refreshBtn" class="animal-btn primary-btn" type="button">刷新状态</button>
+        </div>
+        <button id="addInstanceBtn" class="animal-btn primary-btn block-btn" type="button">＋ 添加设备地址</button>
       </header>
 
       <section class="wallet-row" id="fleetStats"></section>
@@ -137,6 +141,25 @@
     </form>
   </dialog>
 
+  <dialog id="instanceDialog">
+    <form method="dialog" id="instanceForm" class="instance-form island-card pattern-default">
+      <div id="instanceFormRibbon" class="section-ribbon color-app-green">添加设备地址</div>
+      <p class="form-help">配置会立即写入本地 config.json，并更新左侧设备列表。</p>
+      <input type="hidden" id="instanceOriginalId" />
+      <label>设备 ID <input id="instanceIdInput" required pattern="[a-zA-Z0-9_.-]+" placeholder="home-cpe" /></label>
+      <label>显示名称 <input id="instanceNameInput" required placeholder="客厅 CPE" /></label>
+      <label>设备地址 <input id="instanceUrlInput" required type="url" placeholder="http://192.168.1.1" /></label>
+      <label>描述 <textarea id="instanceDescInput" placeholder="位置、用途或备注"></textarea></label>
+      <label>标签 <input id="instanceTagsInput" placeholder="home, 5g, backup" /></label>
+      <label>管理员密码 <input id="instancePasswordInput" type="password" placeholder="留空表示无密码或清除已保存密码" autocomplete="new-password" /></label>
+      <menu class="form-menu">
+        <button value="cancel" class="animal-btn default-btn">取消</button>
+        <button id="deleteInstanceBtn" type="button" class="animal-btn danger-btn" hidden>删除</button>
+        <button id="saveInstanceBtn" value="default" class="animal-btn primary-btn">保存</button>
+      </menu>
+    </form>
+  </dialog>
+
   <div id="toast" class="toast" hidden></div>
   <script src="/app.js" type="module"></script>
 </body>