添加copyright

public/index.html

@@ -354,6 +354,20 @@
       </section>
     </main>
 
+    <!-- Footer -->
+    <footer class="site-footer">
+      <div class="footer-content">
+        <div class="copyright">© <span id="copyrightYear"></span> LDNET-GA-Service. All rights reserved.</div>
+        <div class="filings">
+          <a href="https://beian.miit.gov.cn/" target="_blank" id="icpFilingDisplay" style="display: none;"></a>
+          <a href="http://www.beian.gov.cn/portal/registerSystemInfo" target="_blank" id="psFilingDisplay" style="display: none;">
+            <img src="https://www.beian.gov.cn/img/ghs.png" alt="公安备案" style="width: 14px; height: 14px; vertical-align: middle; margin-right: 2px;">
+            <span id="psFilingText"></span>
+          </a>
+        </div>
+      </div>
+    </footer>
+
     <!-- Settings Modal -->
     <div class="modal-overlay" id="settingsModal">
       <div class="modal">
@@ -467,6 +481,14 @@
                   <option value="both">统计上行+下行 (Sum)</option>
                 </select>
               </div>
+              <div class="form-group" style="margin-top: 15px;">
+                <label for="icpFilingInput">ICP 备案号 (如：京ICP备12345678号)</label>
+                <input type="text" id="icpFilingInput" placeholder="请输入 ICP 备案号">
+              </div>
+              <div class="form-group" style="margin-top: 15px;">
+                <label for="psFilingInput">公安备案号 (如：京公网安备 11010102000001号)</label>
+                <input type="text" id="psFilingInput" placeholder="请输入公安备案号">
+              </div>
               <div class="form-actions" style="margin-top: 25px; display: flex; justify-content: flex-end;">
                 <button class="btn btn-add" id="btnSaveSiteSettings">保存基础设置</button>
               </div>