- Removed references to `post_effect_applicator` from `render_tree_executor.h`, `shared_render_resources.cpp`, and `shared_render_resources.h`.
- Eliminated `post_effect_command_t` and related functions from `render_collector.cpp` and `render_collector.h`.
- Deleted `post_process.h` and its associated implementation, simplifying the widget structure.
- Updated custom shader widgets to reflect changes in effect handling.
- Adjusted various widget classes to remove unused intrinsic size methods.
- Enhanced shader generation templates to include push constant base member information for better validation.