fix: restore temporal sampling batch size expected by xportrait

fix(inference): match sample_log batch_size to nSample to avoid conditioning mismatch

fix: align run_inference signature with gradio app arguments

fix: add target_resolution passthrough to run_inference

fix: normalize image ranges safely in xportrait preprocessing

perf: optimize inference pipeline (cache model, avoid source re-encoding)

Update core/test_xportrait.py

Migrated from GitHub