- [`KTIJ-26576`](https://youtrack.jetbrains.com/issue/KTIJ-26576) K2 IDE: "Redundant qualifier" false positive with referring parent's subclass in type constraint
- [`KTIJ-26785`](https://youtrack.jetbrains.com/issue/KTIJ-26785) K2 IDE: False positive "Redundant qualifier" inspection in extension function for Java interface with nested interface

avoids/fixes a potential security issue: as the returned object is passed directly to Pydantic, if the returned object was a subclass of the `response_model` (e.g. you return a `UserInDB` that inherits from `User` but contains extra fields, like `hashed_password`, and `User` is used in the `response_model`), it would still pass the validation (because `UserInDB` is a subclass of `User`) and the object would be returned as-is, including the `hashed_password`. To fix this, the declared `response_model`...