Feat/web UI fixes v2 (#2152)

* fix(web): 修复复制按钮和插件安装对话框UI问题

- 新增 clipboard.ts 工具函数支持 Clipboard API 降级
- 修复添加机器人页面 Webhook URL 复制按钮未生效
- 修复 API 集成对话框 API Key 复制按钮未生效
- 修复 Bot 会话监控用户 ID 复制按钮未生效
- 修复插件安装进度状态框横向溢出和小屏缩放问题

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(web): improve clipboard copy with Selection API fallback

Replace navigator.clipboard.writeText with Selection API + execCommand
for reliable copying in non-secure contexts. Remove duplicate dialog.
Fix scanProviderModels type signature to accept rerank model type.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(web): revert package-lock.json to match upstream

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(web): fix prettier formatting errors

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(web): unify all clipboard copy to use copyToClipboard utility

- Fix embed code copy button not working in non-secure contexts
- Add copy animation (check icon) to embed code button via EmbedCodeField component
- Replace raw navigator.clipboard calls in plugins/page.tsx and BotLogCard.tsx
- Remove duplicated inline fallback implementations

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

web/src/app/utils/clipboard.ts

@@ -0,0 +1,39 @@
+/**
+ * Copy text to clipboard with fallback support
+ * Tries to use modern Clipboard API first, falls back to execCommand if not available
+ *
+ * @param text - The text to copy to clipboard
+ * @returns Promise<boolean> - true if successful, false otherwise
+ */
+export async function copyToClipboard(text: string): Promise<boolean> {
+  // Try modern Clipboard API first
+  if (navigator.clipboard && navigator.clipboard.writeText) {
+    try {
+      await navigator.clipboard.writeText(text);
+      return true;
+    } catch (err) {
+      console.error('[Clipboard] Modern API failed, trying fallback:', err);
+      // Fall through to legacy method
+    }
+  }
+
+  // Fallback to legacy execCommand method
+  try {
+    const textArea = document.createElement('textarea');
+    textArea.value = text;
+    textArea.style.position = 'fixed';
+    textArea.style.left = '-999999px';
+    textArea.style.top = '-999999px';
+    document.body.appendChild(textArea);
+    textArea.focus();
+    textArea.select();
+
+    const successful = document.execCommand('copy');
+    document.body.removeChild(textArea);
+
+    return successful;
+  } catch (err) {
+    console.error('[Clipboard] Fallback method failed:', err);
+    return false;
+  }
+}