client: Windows 客户端（WinUI3 壳 + agent-core；调试用 Electron 壳存档）；localserver token 改为常数时间比较

client/desktop/renderer/index.html

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+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8" />
+  <title>EveryPublish 客户端</title>
+  <link rel="stylesheet" href="style.css" />
+</head>
+<body>
+  <header class="topbar">
+    <div class="brand">EveryPublish <span class="sub">发布客户端</span></div>
+    <nav class="tabs">
+      <button class="tab active" data-tab="status">状态</button>
+      <button class="tab" data-tab="pair">配对</button>
+      <button class="tab" data-tab="challenges">挑战<span id="ch-badge" class="badge hidden">0</span></button>
+      <button class="tab" data-tab="settings">设置</button>
+    </nav>
+  </header>
+
+  <main id="main">
+    <!-- 状态页 -->
+    <section id="page-status" class="page active">
+      <div class="card">
+        <h2>运行状态</h2>
+        <div class="kv"><span>连接状态</span><b id="st-online">检测中...</b><span id="st-dot" class="dot gray"></span></div>
+        <div class="kv"><span>服务器</span><b id="st-server">-</b></div>
+        <div class="kv"><span>设备</span><b id="st-device">-</b></div>
+        <div class="kv"><span>会话</span><b id="st-session">-</b></div>
+      </div>
+      <div class="card actions">
+        <button id="btn-open-web" class="btn primary">打开网页控制台</button>
+        <button id="btn-open-data" class="btn">打开数据目录</button>
+      </div>
+    </section>
+
+    <!-- 配对页 -->
+    <section id="page-pair" class="page">
+      <div class="card">
+        <h2>设备配对</h2>
+        <ol class="steps">
+          <li>打开网页控制台（需与服务器内网互通）</li>
+          <li>登录后进入「设置 → Agent 设备」生成配对码</li>
+          <li>在下方输入配对码并点击「配对」</li>
+        </ol>
+        <label>配对码（6 位，5 分钟有效）</label>
+        <input id="pair-code" placeholder="例如：AB12CD" maxlength="6" />
+        <label>设备名（选填）</label>
+        <input id="pair-name" placeholder="例如：办公室电脑-01" />
+        <button id="btn-pair" class="btn primary">配对</button>
+        <p id="pair-result" class="msg"></p>
+      </div>
+    </section>
+
+    <!-- 挑战页 -->
+    <section id="page-challenges" class="page">
+      <div class="card">
+        <h2>二次验证挑战</h2>
+        <p class="hint">平台要求扫码/验证码时在此处理；超时可在网页端一键重发。</p>
+        <div id="ch-list" class="list"></div>
+        <div id="ch-detail" class="detail hidden">
+          <img id="ch-qr" alt="二维码" />
+          <label>验证码 / 确认值</label>
+          <input id="ch-value" placeholder="扫码后输入验证码；扫码挑战留空直接提交" />
+          <button id="btn-solve" class="btn primary">提交</button>
+          <p id="ch-result" class="msg"></p>
+        </div>
+      </div>
+    </section>
+
+    <!-- 设置页 -->
+    <section id="page-settings" class="page">
+      <div class="card">
+        <h2>设置</h2>
+        <label>服务器地址（内网部署时填 http://服务器IP:8090）</label>
+        <input id="set-server" placeholder="http://192.168.x.x:8090" />
+        <label class="switch-row">
+          <input type="checkbox" id="set-fake" />
+          <span>模拟执行（无真实账号的安装联调）</span>
+        </label>
+        <label class="switch-row">
+          <input type="checkbox" id="set-autostart" />
+          <span>开机自启</span>
+        </label>
+        <div class="actions">
+          <button id="btn-save" class="btn primary">保存并重启核心</button>
+          <button id="btn-quit" class="btn danger">退出客户端</button>
+        </div>
+        <p id="set-result" class="msg"></p>
+      </div>
+    </section>
+  </main>
+  <script src="app.js"></script>
+</body>
+</html>