requirements: use absolute /repository/shim path (pip cwd isnt /repository on HFIE)

shim for transformers.file_utils compat with HF inference toolkit

add requirements.txt for stock-container HFIE deploy

runtime install of lerobot 0.5.1 via --ignore-requires-python

pin transformers==4.49.0 to match lerobot 0.4.4 wallx extra

pin lerobot 0.4.4; strip 0.5.x-only config fields on load

requirements: install lerobot from main (new PI05Config fields)

handler.py + requirements.txt for folding_final on HFIE