fix(apifox): 改进 HTTPS 请求处理和数据验证

- 使用 Buffer.concat() 正确处理二进制数据流
- 添加空响应处理，避免解析错误
- 移除 UTF-8 BOM 标记（\uFEFF）
- 使用 Array.isArray() 验证响应数据类型
- 统一改进 apifox-sync.js、apifox-to-openapi.js、test-apifox-connection.js

提升 Apifox API 集成的稳定性和容错能力

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

@@ -50,6 +50,25 @@
 
 ---
 
+## [2026-02-02] - 修复 Apifox 响应解析
+
+### 修复
+- 修复 Apifox 空响应导致 JSON 解析失败的问题
+  - 空响应时按空数据处理并返回可识别状态
+  - 接口列表解析增加空响应提示
+  - 影响文件：scripts/test-apifox-connection.js, scripts/apifox-sync.js, scripts/apifox-to-openapi.js
+
+---
+
+**详细信息**：
+- **影响文件**: scripts/test-apifox-connection.js, scripts/apifox-sync.js, scripts/apifox-to-openapi.js
+- **技术栈**: Node.js
+- **测试状态**: ✅ 已通过（pnpm api:test, pnpm lint；lint 有现存警告）
+- **备注**:
+  - 接口列表为空时不会中断连接测试
+
+---
+
 ## [2026-02-02] - 修复 Apifox Token 验证
 
 ### 修复

@@ -78,19 +78,31 @@ function loadEnv() {
 function httpsRequest(options) {
   return new Promise((resolve, reject) => {
     const req = https.request(options, (res) => {
-      let data = '';
+      const chunks = [];
 
       res.on('data', chunk => {
-        data += chunk;
+        chunks.push(chunk);
       });
 
       res.on('end', () => {
+        const raw = Buffer.concat(chunks).toString('utf8').trim();
+
+        if (!raw) {
+          if (res.statusCode >= 200 && res.statusCode < 300) {
+            resolve({ data: null, total: 0, __empty: true, statusCode: res.statusCode });
+            return;
+          }
+
+          reject(new Error(`HTTP ${res.statusCode}: Empty response`));
+          return;
+        }
+
         try {
-          const json = JSON.parse(data);
+          const json = JSON.parse(raw.replace(/^\uFEFF/, ''));
           if (res.statusCode === 200) {
             resolve(json);
           } else {
-            reject(new Error(`HTTP ${res.statusCode}: ${json.message || data}`));
+            reject(new Error(`HTTP ${res.statusCode}: ${json.message || raw}`));
           }
         } catch (err) {
           reject(new Error(`解析响应失败: ${err.message}`));
@@ -119,7 +131,7 @@ async function fetchApis() {
 
   try {
     const response = await httpsRequest(options);
-    const apis = response.data || [];
+    const apis = Array.isArray(response.data) ? response.data : [];
 
     log(`✅ 成功获取 ${apis.length} 个接口`, 'green');
     return apis;

@@ -84,19 +84,31 @@ function loadEnv() {
 function httpsRequest(options) {
   return new Promise((resolve, reject) => {
     const req = https.request(options, (res) => {
-      let data = '';
+      const chunks = [];
 
       res.on('data', chunk => {
-        data += chunk;
+        chunks.push(chunk);
       });
 
       res.on('end', () => {
+        const raw = Buffer.concat(chunks).toString('utf8').trim();
+
+        if (!raw) {
+          if (res.statusCode >= 200 && res.statusCode < 300) {
+            resolve({ data: null, total: 0, __empty: true, statusCode: res.statusCode });
+            return;
+          }
+
+          reject(new Error(`HTTP ${res.statusCode}: Empty response`));
+          return;
+        }
+
         try {
-          const json = JSON.parse(data);
+          const json = JSON.parse(raw.replace(/^\uFEFF/, ''));
           if (res.statusCode === 200) {
             resolve(json);
           } else {
-            reject(new Error(`HTTP ${res.statusCode}: ${json.message || data}`));
+            reject(new Error(`HTTP ${res.statusCode}: ${json.message || raw}`));
           }
         } catch (err) {
           reject(new Error(`解析响应失败: ${err.message}`));
@@ -125,7 +137,7 @@ async function fetchApis() {
 
   try {
     const response = await httpsRequest(options);
-    const apis = response.data || [];
+    const apis = Array.isArray(response.data) ? response.data : [];
 
     log(`✅ 成功获取 ${apis.length} 个接口`, 'green');
     return apis;

@@ -100,19 +100,31 @@ function httpsRequest(options) {
     log(`📡 发送请求到: https://${options.hostname}${options.path}`, 'blue');
 
     const req = https.request(options, (res) => {
-      let data = '';
+      const chunks = [];
 
       res.on('data', chunk => {
-        data += chunk;
+        chunks.push(chunk);
       });
 
       res.on('end', () => {
+        const raw = Buffer.concat(chunks).toString('utf8').trim();
+
+        if (!raw) {
+          if (res.statusCode >= 200 && res.statusCode < 300) {
+            resolve({ data: null, total: 0, __empty: true, statusCode: res.statusCode });
+            return;
+          }
+
+          reject(new Error(`HTTP ${res.statusCode}: Empty response`));
+          return;
+        }
+
         try {
-          const json = JSON.parse(data);
+          const json = JSON.parse(raw.replace(/^\uFEFF/, ''));
           if (res.statusCode === 200) {
             resolve(json);
           } else {
-            reject(new Error(`HTTP ${res.statusCode}: ${json.message || data}`));
+            reject(new Error(`HTTP ${res.statusCode}: ${json.message || raw}`));
           }
         } catch (err) {
           reject(new Error(`解析响应失败: ${err.message}`));
@@ -141,6 +153,10 @@ async function testProjectInfo(config) {
 
   try {
     const response = await httpsRequest(options);
+    if (!response || !response.data) {
+      throw new Error('响应为空或缺少 data 字段');
+    }
+
     const project = response.data;
 
     log('✅ 项目信息获取成功', 'green');
@@ -186,7 +202,7 @@ async function testApiList(config) {
 
   try {
     const response = await httpsRequest(options);
-    const apis = response.data || [];
+    const apis = Array.isArray(response.data) ? response.data : [];
 
     log('✅ 接口列表获取成功', 'green');
     log(`  共找到 ${response.total || apis.length} 个接口`, 'blue');
@@ -205,6 +221,8 @@ async function testApiList(config) {
       if (response.total > 10) {
         log(`\n  ... 还有 ${response.total - 10} 个接口`, 'yellow');
       }
+    } else if (response.__empty) {
+      log('⚠️  接口列表响应为空，已按空列表处理', 'yellow');
     }
 
     return true;