暴露全部api，解决循环import问题

src/plugin_system/utils/__init__.py

@@ -4,11 +4,16 @@
 提供插件开发和管理的实用工具
 """
 
-from src.plugin_system.utils.manifest_utils import (
+from .manifest_utils import (
     ManifestValidator,
     ManifestGenerator,
     validate_plugin_manifest,
     generate_plugin_manifest,
 )
 
-__all__ = ["ManifestValidator", "ManifestGenerator", "validate_plugin_manifest", "generate_plugin_manifest"]
+__all__ = [
+    "ManifestValidator",
+    "ManifestGenerator",
+    "validate_plugin_manifest",
+    "generate_plugin_manifest",
+]

src/plugin_system/utils/manifest_utils.py

@@ -305,7 +305,7 @@ class ManifestValidator:
         # 检查URL格式（可选字段）
         for url_field in ["homepage_url", "repository_url"]:
             if url_field in manifest_data and manifest_data[url_field]:
-                url = manifest_data[url_field]
+                url: str = manifest_data[url_field]
                 if not (url.startswith("http://") or url.startswith("https://")):
                     self.validation_warnings.append(f"{url_field}建议使用完整的URL格式")