HF RL Explorer

Feature Request: Support user-registered custom LoRA layer types

Feature Request: Support user-registered custom LoRA layer types: a task in LegoFlow-SWE (Harbor dataset). Registration should be done once per session via the LoraConfig . The custom mapping should be consulted before the built-in layer types, so that user overrides take precedence.

The task

Registration should be done once per session via the `LoraConfig`. The custom mapping should be consulted **before** the built-in layer types, so that user overrides take precedence.

Part of Lego-X/LegoFlow-SWE.