fix(BA-3696): Align DeleteUserAction references with reverted signature

- Remove user_uuid kwarg from DeleteUserAction calls (field was removed in revert)
- Revert delete_user processor from SingleEntityActionProcessor to ActionProcessor
  (DeleteUserAction no longer extends BaseSingleEntityAction)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: fregataa

src/ai/backend/manager/api/rest/user/handler.py

@@ -208,7 +208,7 @@ async def delete_user(
         )
 
         await self._user.delete_user.wait_for_complete(
-            DeleteUserAction(user_uuid=body.parsed.user_id, email=get_result.user.email)
+            DeleteUserAction(email=get_result.user.email)
         )
 
         resp = DeleteUserResponse(success=True)

src/ai/backend/manager/services/user/processors.py

@@ -72,7 +72,7 @@ class UserProcessors(AbstractProcessorPackage):
     # Single entity actions with RBAC
     get_user: SingleEntityActionProcessor[GetUserAction, GetUserActionResult]
     modify_user: SingleEntityActionProcessor[ModifyUserAction, ModifyUserActionResult]
-    delete_user: SingleEntityActionProcessor[DeleteUserAction, DeleteUserActionResult]
+    delete_user: ActionProcessor[DeleteUserAction, DeleteUserActionResult]
     purge_user: SingleEntityActionProcessor[PurgeUserAction, PurgeUserActionResult]
     # Bulk actions without RBAC (special handling)
     bulk_create_users: ActionProcessor[BulkCreateUserAction, BulkCreateUserActionResult]
@@ -109,9 +109,7 @@ def __init__(
         self.modify_user = SingleEntityActionProcessor(
             user_service.modify_user, action_monitors, validators=[validators.rbac.single_entity]
         )
-        self.delete_user = SingleEntityActionProcessor(
-            user_service.delete_user, action_monitors, validators=[validators.rbac.single_entity]
-        )
+        self.delete_user = ActionProcessor(user_service.delete_user, action_monitors)
         self.purge_user = SingleEntityActionProcessor(
             user_service.purge_user, action_monitors, validators=[validators.rbac.single_entity]
         )

tests/unit/manager/services/test_users.py

@@ -358,7 +358,7 @@ async def test_delete_existing_user_returns_success(
         """Delete existing user should return success result."""
         mock_user_repository.soft_delete_user_validated = AsyncMock(return_value=None)
 
-        action = DeleteUserAction(user_uuid=uuid.uuid4(), email="test@example.com")
+        action = DeleteUserAction(email="test@example.com")
 
         result = await service.delete_user(action)
 
@@ -377,7 +377,7 @@ async def test_delete_nonexistent_user_raises_error(
             side_effect=UserNotFound("User not found")
         )
 
-        action = DeleteUserAction(user_uuid=uuid.uuid4(), email="nonexistent@example.com")
+        action = DeleteUserAction(email="nonexistent@example.com")
 
         with pytest.raises(UserNotFound):
             await service.delete_user(action)

tests/unit/manager/services/user/test_user.py

@@ -189,7 +189,7 @@ async def test_delete_user_action_structure(
         """Test that DeleteUserAction works as expected."""
         mock_dependencies["user_repository"].soft_delete_user_validated = AsyncMock()
 
-        action = DeleteUserAction(user_uuid=uuid.uuid4(), email="user@example.com")
+        action = DeleteUserAction(email="user@example.com")
         await user_service.delete_user(action)
 
         mock_dependencies["user_repository"].soft_delete_user_validated.assert_called_once_with(

tests/unit/manager/services/user/test_user_service.py

@@ -743,7 +743,7 @@ async def test_soft_delete_succeeds(
         """Email soft delete calls repository."""
         mock_user_repository.soft_delete_user_validated = AsyncMock(return_value=None)
 
-        action = DeleteUserAction(user_uuid=uuid.uuid4(), email="user@example.com")
+        action = DeleteUserAction(email="user@example.com")
         result = await service.delete_user(action)
 
         assert result is not None
@@ -761,7 +761,7 @@ async def test_nonexistent_email_raises_not_found(
             side_effect=UserNotFound("User not found")
         )
 
-        action = DeleteUserAction(user_uuid=uuid.uuid4(), email="missing@example.com")
+        action = DeleteUserAction(email="missing@example.com")
 
         with pytest.raises(UserNotFound):
             await service.delete_user(action)