feat: 移除贡献模式确认弹窗，简化进入流程，更新相关测试

sidepanel/sidepanel.html

@@ -35,7 +35,7 @@
     <div class="header-btns">
       <div class="run-group">
         <button id="btn-contribution-mode" class="btn btn-outline btn-sm btn-contribution-mode" type="button"
-          title="打开账号贡献上传页面">贡献</button>
+          aria-pressed="false" title="进入贡献模式">贡献</button>
         <input type="number" id="input-run-count" class="run-count-input" value="1" min="1" max="50" title="运行次数" />
         <button id="btn-auto-run" class="btn btn-success" title="自动执行全部步骤">
           <svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor">
@@ -52,8 +52,6 @@
           <path d="M3.51 15a9 9 0 1 0 2.13-9.36L1 10" />
         </svg>
       </button>
-      <button id="btn-contribution-mode" class="btn btn-outline btn-sm btn-contribution-mode" type="button"
-        aria-pressed="false">贡献</button>
       <button id="btn-theme" class="theme-toggle" title="切换主题">
         <svg class="icon-moon" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor"
           stroke-width="2" stroke-linecap="round" stroke-linejoin="round">