Download center: copy code, online/offline status; remove client offline mode.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/templates/download.html

@@ -5,7 +5,7 @@
 <div class="grid cols-2">
   <div class="card">
     <h3>通用辅助包</h3>
-    <p class="muted">所有机器下载同一 exe。首次启动输入激活码，绑定账户与机器标识。</p>
+    <p class="muted">所有机器下载同一 exe。首次启动输入激活码，绑定账户与机器标识（须在线，不允许离线运行）。</p>
     {% if exe_ready %}
       <p><span class="tag green">已上传 {{ exe_name }}</span></p>
       <a class="btn" href="{{ url_for('download_file') }}">下载 exe</a>
@@ -48,11 +48,21 @@
     <tbody>
       {% for a in activations %}
       <tr>
-        <td><code>{{ a.code }}</code></td>
+        <td>
+          <code id="code-{{ loop.index }}">{{ a.code }}</code>
+          <button type="button" class="btn secondary btn-copy" style="margin-left:8px;padding:4px 10px;font-size:12px"
+                  data-code="{{ a.code }}">复制</button>
+        </td>
         <td>{{ a.account_name or a.account_id }}</td>
         <td>{{ a.machine_name or a.machine_id or '—' }}</td>
-        <td><span class="tag {% if a.status=='active' %}green{% else %}gray{% endif %}">{{ a.status }}</span></td>
-        <td class="muted">{{ a.created_at }}</td>
+        <td>
+          {% if a.online %}
+          <span class="tag green">在线</span>
+          {% else %}
+          <span class="tag gray">离线</span>
+          {% endif %}
+        </td>
+        <td class="muted">{{ a.created_at_fmt }}</td>
       </tr>
       {% else %}
       <tr><td colspan="5" class="muted">暂无激活码</td></tr>
@@ -61,3 +71,27 @@
   </table>
 </div>
 {% endblock %}
+{% block scripts %}
+<script>
+document.querySelectorAll('.btn-copy').forEach(function (btn) {
+  btn.addEventListener('click', function () {
+    var code = btn.getAttribute('data-code') || '';
+    function done(ok) {
+      var old = btn.textContent;
+      btn.textContent = ok ? '已复制' : '失败';
+      setTimeout(function () { btn.textContent = old; }, 1200);
+    }
+    if (navigator.clipboard && navigator.clipboard.writeText) {
+      navigator.clipboard.writeText(code).then(function () { done(true); }).catch(function () { done(false); });
+    } else {
+      var ta = document.createElement('textarea');
+      ta.value = code;
+      document.body.appendChild(ta);
+      ta.select();
+      try { document.execCommand('copy'); done(true); } catch (e) { done(false); }
+      document.body.removeChild(ta);
+    }
+  });
+});
+</script>
+{% endblock %}