feat(api): 新增获取所有开发者列表接口并添加OpenAPI文档

添加了获取所有开发者列表的API端点，支持分页查询并返回开发者信息及其应用统计
同时新增了完整的OpenAPI规范文档，描述所有API端点的详细参数和响应格式

api.php

@@ -9,6 +9,7 @@
  * - /api.php?t=gettagapp&id={tagid} - 获取某标签里的APP列表
  * - /api.php?t=getdeveloperapp&id={developerid} - 获取某开发者的APP列表
  * - /api.php?t=getdeveloperinfo&id={developerid} - 获取开发者信息
+ * - /api.php?t=getalldevelopers - 获取所有开发者列表
  * - /api.php?t=getacc - 获取所有公告
  * - /api.php?t=getcount - 获取计数信息
  * - /api.php?t=getappversions&id={appid} - 获取某个应用的版本列表
@@ -71,6 +72,9 @@ switch ($apiType) {
     case 'getappversions':
         getAppVersions();
         break;
+    case 'getalldevelopers':
+        getAllDevelopers();
+        break;
     default:
         showApiEndpoints();
         break;
@@ -115,6 +119,7 @@ function showApiEndpoints() {
         '/api.php?t=gettagapp&id={tagid}' => '获取某标签里的APP列表',
         '/api.php?t=getdeveloperapp&id={developerid}' => '获取某开发者的APP列表',
         '/api.php?t=getdeveloperinfo&id={developerid}' => '获取开发者信息',
+        '/api.php?t=getalldevelopers' => '获取所有开发者列表',
         '/api.php?t=getacc' => '获取所有公告',
         '/api.php?t=getcount' => '获取计数信息（如所有APP的数量、开发者的数量等）',
         '/api.php?t=getappversions&id={appid}' => '获取某个应用的版本列表'
@@ -544,6 +549,68 @@ function getCountInfo() {
     sendSuccessResponse($counts);
 }
 
+/**
+ * 获取所有开发者列表
+ */
+function getAllDevelopers() {
+    global $conn;
+    
+    // 获取分页参数
+    $page = isset($_GET['page']) ? max(1, intval($_GET['page'])) : 1;
+    $limit = isset($_GET['limit']) ? min(100, max(1, intval($_GET['limit']))) : 20;
+    $offset = ($page - 1) * $limit;
+    
+    // 获取总数量
+    $countSql = "SELECT COUNT(*) as total FROM developers";
+    $countResult = $conn->query($countSql);
+    $total = $countResult->fetch_assoc()['total'] ?? 0;
+    $totalPages = ceil($total / $limit);
+    
+    // 获取开发者列表
+    $sql = "SELECT id, username, email, created_at FROM developers ORDER BY created_at DESC LIMIT ?, ?";
+    $stmt = $conn->prepare($sql);
+    $stmt->bind_param("ii", $offset, $limit);
+    $stmt->execute();
+    $result = $stmt->get_result();
+    
+    $developers = [];
+    while ($row = $result->fetch_assoc()) {
+        // 获取每个开发者的应用数量
+        $appCountSql = "SELECT COUNT(*) as count FROM apps WHERE developer_id = ? AND status = 'approved' AND is_approved = 1";
+        $appCountStmt = $conn->prepare($appCountSql);
+        $appCountStmt->bind_param("i", $row['id']);
+        $appCountStmt->execute();
+        $appCountResult = $appCountStmt->get_result();
+        $appCount = $appCountResult->fetch_assoc()['count'] ?? 0;
+        $row['app_count'] = $appCount;
+        
+        // 获取每个开发者的总下载量
+        $downloadCountSql = "SELECT SUM(download_count) as count FROM app_versions 
+                            JOIN apps ON app_versions.app_id = apps.id 
+                            WHERE apps.developer_id = ?";
+        $downloadCountStmt = $conn->prepare($downloadCountSql);
+        $downloadCountStmt->bind_param("i", $row['id']);
+        $downloadCountStmt->execute();
+        $downloadCountResult = $downloadCountStmt->get_result();
+        $downloadCount = $downloadCountResult->fetch_assoc()['count'] ?? 0;
+        $row['total_downloads'] = $downloadCount;
+        
+        $developers[] = $row;
+    }
+    
+    $response = [
+        'developers' => $developers,
+        'pagination' => [
+            'total' => $total,
+            'page' => $page,
+            'limit' => $limit,
+            'totalPages' => $totalPages
+        ]
+    ];
+    
+    sendSuccessResponse($response);
+}
+
 /**
  * 获取指定应用的版本列表
  */