feat: add note mode and workflow config

public/index.html

@@ -101,6 +101,13 @@
             </svg>
           </button>
           <textarea id="msg-input" rows="1" placeholder="输入消息… 输入 / 查看指令" autocomplete="off"></textarea>
+          <button id="note-mode-btn" class="note-mode-btn" title="笔记模式" aria-label="笔记模式" aria-pressed="false" type="button">
+            <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M12 20h9"></path>
+              <path d="M16.5 3.5a2.12 2.12 0 0 1 3 3L7 19l-4 1 1-4Z"></path>
+              <path d="m15 5 3 3"></path>
+            </svg>
+          </button>
           <button id="send-btn" class="send-btn" title="发送">
             <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
               <line x1="22" y1="2" x2="11" y2="13"></line><polygon points="22 2 15 22 11 13 2 9 22 2"></polygon>