constants and fixes

✅ Return InvalidRetentionPeriod for invalid retention values (0 days, negative years)
✅ Return ObjectLockConfigurationNotFoundError when object lock configuration doesn't exist
✅ Handle all object lock validation errors consistently with proper error codes

weed/s3api/s3err/s3api_errors.go

@@ -114,6 +114,7 @@ const (
 	ErrNoSuchObjectLockConfiguration
 	ErrNoSuchObjectLegalHold
 	ErrInvalidRetentionPeriod
+	ErrObjectLockConfigurationNotFoundError
 )
 
 // Error message constants for checksum validation
@@ -459,6 +460,11 @@ var errorCodeResponse = map[ErrorCode]APIError{
 		Description:    "The bucket ownership controls were not found",
 		HTTPStatusCode: http.StatusNotFound,
 	},
+	ErrObjectLockConfigurationNotFoundError: {
+		Code:           "ObjectLockConfigurationNotFoundError",
+		Description:    "Object Lock configuration does not exist for this bucket",
+		HTTPStatusCode: http.StatusNotFound,
+	},
 }
 
 // GetAPIError provides API Error for input API error code.