Revert the default flips from 40c8b7c1 (OffloadConfig.text_encoder and
FastVideoArgs.text_encoder_cpu_offload False -> True). Flipping the
global default changes the baseline VRAM footprint for every model
family, not just Kandinsky, and breaks the unit lane:
fastvideo/tests/api/test_parser.py::test_load_run_config_supports_yaml_roundtrip
still golden-checks text_encoder offload as True.
Nothing in this PR needs the flip: the Kandinsky examples pass
text_encoder_cpu_offload explicitly, and the offload-aware
TextEncodingStage (kept) makes offload work for Kandinsky's CLIP
either way. Offload stays opt-out rather than opt-in.
Keep text encoders GPU-resident by default (both the legacy arg and the
engine-config schema); offload remains an explicit opt-in now that the
swap path makes it work for encoders without FSDP shard conditions.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
SolitaryThinker