fix: auto-fix code issues (cron)

- 修复PEP8格式问题（行长度超过120字符）
- 修复类型注解（添加__init__和_get_db返回类型）
- 删除__pycache__缓存文件
- 优化长SQL查询语句格式

backend/developer_ecosystem_manager.py

@@ -980,12 +980,14 @@ class DeveloperEcosystemManager:
                 """
                 INSERT INTO plugin_market
                 (id, name, description, category, tags, author_id, author_name, status,
-                 price, currency, pricing_model, preview_image_url, demo_url, documentation_url,
-                 repository_url, download_url, webhook_url, permissions, install_count,
-                 active_install_count, rating, rating_count, review_count, version,
-                 min_platform_version, file_size, checksum, created_at, updated_at,
-                 published_at, reviewed_by, reviewed_at, review_notes)
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+                price, currency, pricing_model, preview_image_url, demo_url,
+                documentation_url, repository_url, download_url, webhook_url,
+                permissions, install_count, active_install_count, rating,
+                rating_count, review_count, version, min_platform_version,
+                file_size, checksum, created_at, updated_at, published_at,
+                reviewed_by, reviewed_at, review_notes)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,
+                        ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
             """,
                 (
                     plugin.id,