新增：聊天室反馈模态弹窗（仿留言弹窗样式）

点击工具栏「反馈」按钮弹出反馈弹窗，不再跳转新页面。

新建文件：
- feedback-modal.blade.php — 蓝白渐变标题栏、类型筛选Tabs、反馈卡片列表（展开详情/评论）、提交反馈表单、滚动懒加载
- feedback.js — AJAX加载/提交/点赞/评论/删除，滚动懒加载，乐观UI更新

修改文件：
- toolbar.blade.php — 反馈按钮 data-toolbar-url → data-toolbar-action
- toolbar.js — 添加 feedback 动作
- chat-room.js — 静态导入 feedback 模块
- frame.blade.php — 引入反馈弹窗
- routes/web.php — 新增 feedback.data 路由
- FeedbackController.php — 新增 data() 方法

resources/js/chat-room.js

@@ -224,6 +224,9 @@ import { bindChatBotControls, clearChatBotContext, sendToChatBot } from "./chat-
 // ─── 留言板模态弹窗 ──────────────────────
 import { openGuestbookModal, closeGuestbookModal, loadGuestbookMessages, bindGuestbookControls } from "./chat-room/guestbook.js";
 
+// ─── 反馈模态弹窗 ──────────────────────
+import { openFeedbackModal, closeFeedbackModal, loadFeedbackData, loadMoreFeedback, bindFeedbackControls } from "./chat-room/feedback.js";
+
 // ─── 轻量核心模块（保持静态导入）────────────────────
 import { escapeHtml, escapeHtmlWithLineBreaks, normalizeSafeChatUrl } from "./chat-room/html.js";
 import { bindGlobalDialogControls } from "./chat-room/dialog.js";
@@ -672,6 +675,11 @@ if (typeof window !== "undefined") {
     window.openGuestbookModal = openGuestbookModal;
     window.closeGuestbookModal = closeGuestbookModal;
     window.loadGuestbookMessages = loadGuestbookMessages;
+    window.openFeedbackModal = openFeedbackModal;
+    window.closeFeedbackModal = closeFeedbackModal;
+    window.loadFeedbackData = loadFeedbackData;
+    window.loadMoreFeedback = loadMoreFeedback;
+    window.bindFeedbackControls = bindFeedbackControls;
 
     // ── Alpine 组件（静态导入，Blade 中 x-data 引用时同步可用） ──
     window.userCardComponent = userCardComponent;
@@ -758,4 +766,5 @@ if (typeof window !== "undefined") {
     bindChatBanner();
     bindChatBotControls();
     bindGuestbookControls();
+    bindFeedbackControls();
 }