添加详细的客户端请求日志，便于排查问题

添加日志：
1. 请求URL和配置
2. 响应状态
3. 错误详情（包含响应body）
4. 捕获所有异常

帮助诊断：
- API_URL配置是否正确
- 请求是否发送成功
- 响应状态码和内容
- 具体的错误信息

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/services/api.client.ts

@@ -529,14 +529,24 @@ export const fetchConversations = async () => {
         // 不再传递user参数，服务端会从JWT自动提取
     });
 
-    return fetch(`${CHAT_CONFIG.API_URL}/conversations?${params}`, {
+    const url = `${CHAT_CONFIG.API_URL}/conversations?${params}`;
+    console.log('📋 [API Client] 获取会话列表:', { url, apiUrl: CHAT_CONFIG.API_URL });
+
+    return fetch(url, {
         method: 'GET',
         credentials: 'include', // 携带cookie
     }).then(res => {
+        console.log('📋 [API Client] 会话列表响应:', { status: res.status, ok: res.ok });
         if (!res.ok) {
-            throw new Error(`Failed to fetch conversations: ${res.status}`);
+            return res.text().then(text => {
+                console.error('❌ [API Client] 获取会话列表失败:', { status: res.status, body: text });
+                throw new Error(`Failed to fetch conversations: ${res.status} - ${text}`);
+            });
         }
         return res.json();
+    }).catch(err => {
+        console.error('❌ [API Client] 会话列表请求异常:', err);
+        throw err;
     });
 };
 
@@ -604,14 +614,24 @@ export const fetchChatList = async (conversationId: string) => {
  * ```
  */
 export const fetchAppParams = async () => {
-    return fetch(`${CHAT_CONFIG.API_URL}/parameters`, {
+    const url = `${CHAT_CONFIG.API_URL}/parameters`;
+    console.log('⚙️ [API Client] 获取应用参数:', { url, apiUrl: CHAT_CONFIG.API_URL });
+
+    return fetch(url, {
         method: 'GET',
         credentials: 'include', // 携带cookie
     }).then(res => {
+        console.log('⚙️ [API Client] 应用参数响应:', { status: res.status, ok: res.ok });
         if (!res.ok) {
-            throw new Error(`Failed to fetch app params: ${res.status}`);
+            return res.text().then(text => {
+                console.error('❌ [API Client] 获取应用参数失败:', { status: res.status, body: text });
+                throw new Error(`Failed to fetch app params: ${res.status} - ${text}`);
+            });
         }
         return res.json();
+    }).catch(err => {
+        console.error('❌ [API Client] 应用参数请求异常:', err);
+        throw err;
     });
 };