fix: add field_validator to coerce INET types

src/proxy_pool/proxy/schemas.py

@@ -1,7 +1,7 @@
 from datetime import datetime
 from uuid import UUID
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
 
 from proxy_pool.proxy.models import AnonymityLevel, ProxyProtocol, ProxyStatus
 
@@ -52,6 +52,13 @@ class ProxyResponse(BaseModel):
     first_seen_at: datetime
     created_at: datetime
 
+    @field_validator("ip", "exit_ip", mode="before")
+    @classmethod
+    def coerce_inet(cls, value: object) -> str | None:
+        if value is None:
+            return None
+        return str(value)
+
 
 class ProxyListParams(BaseModel):
     status: ProxyStatus | None = None