- feat:新增附件列表管理和增加按钮提示

Introduce an upload attachments panel with styles, localization and client-side management. Added new i18n keys (EN/ZH) and refactored js/i18n.js to helper setters for text/placeholder/title. popup.html and css/main.css add the upload-list UI and styles. oper.js implements rendering, drag-and-drop reorder, deletion (calls DELETE api with token), storage persistence (resourceIdList), escapeHtml sanitization, and sync change handling; it also fixes a config check (repo -> apiTokens), stores filename from upload responses, handles attachments/resources compatibility, and clears the list after sending a memo. Overall this enables reorderable, deletable uploaded attachments with proper localization and tooltips.

popup.html

@@ -99,6 +99,12 @@
       <button id="content_submit_text" class="action-btn confirm-btn"><img class="icon-img" src="../assets/logo_24x24.png"></button>
     </div>
   </div>
+
+  <div class="upload-list-wrapper">
+    <div id="uploadlist-title" class="upload-list-title"></div>
+    <div id="uploadlist" class="upload-list"></div>
+  </div>
+
   <div class="tag-list" id="taglist"></div>
   <div class="tag-hide" id="taghide">
     <input