feat: 云厂商SDK适配层（Vultr/DO/Cloudflare/阿里云/腾讯云）+ 同步服务 + 测试连接/同步接口与前端

app/adapters/registry.py

@@ -0,0 +1,72 @@
+"""适配器注册表与工厂
+
+通过 @register("sdk-type") 装饰器将适配器类登记到注册表，
+上层按 Provider.sdk_type 取得对应适配器实例。
+"""
+
+from typing import Optional
+
+from app.adapters.base import BaseAdapter
+
+_REGISTRY: dict = {}
+
+
+def register(*sdk_types: str):
+    """装饰器：将适配器类注册到一个或多个 sdk_type"""
+
+    def decorator(cls):
+        for t in sdk_types:
+            _REGISTRY[t] = cls
+        cls.sdk_types = list(sdk_types)
+        return cls
+
+    return decorator
+
+
+def load_all() -> None:
+    """导入所有适配器模块以触发注册（幂等）"""
+    from app.adapters import (  # noqa: F401
+        aliyun,
+        cloudflare,
+        digitalocean,
+        tencent,
+        vultr,
+    )
+
+
+def get_adapter(sdk_type: str, config: Optional[dict] = None) -> BaseAdapter:
+    """按 sdk_type 创建适配器实例"""
+    load_all()
+    cls = _REGISTRY.get(sdk_type)
+    if not cls:
+        raise ValueError(f"未支持的 SDK 类型：{sdk_type}")
+    return cls(config)
+
+
+def is_supported(sdk_type: Optional[str]) -> bool:
+    load_all()
+    return sdk_type in _REGISTRY
+
+
+def supported_types() -> list:
+    load_all()
+    return sorted(_REGISTRY.keys())
+
+
+def adapter_meta() -> list:
+    """返回所有已注册适配器的元信息（供前端展示所需凭证字段与能力）"""
+    load_all()
+    seen = set()
+    result = []
+    for sdk_type, cls in sorted(_REGISTRY.items()):
+        if cls.__name__ in seen:
+            continue
+        seen.add(cls.__name__)
+        result.append(
+            {
+                "class": cls.__name__,
+                "sdk_types": getattr(cls, "sdk_types", [sdk_type]),
+                "required_config": getattr(cls, "required_config", []),
+            }
+        )
+    return result