Post-review cleanup (no behavior change):
Correctness:
* compat.py refine reverse-flatten now iterates
_LTX2_REFINE_FLAT_KEYS, which unions the typed
LTX2RefinePresetOverride and LTX2RefineStageOverride field sets.
The previous hardcoded 4-tuple missed image_crf and
video_position_offset_sec, so any init-time
preset_overrides.refine.image_crf would silently drop on reverse.
New regression test TestRefineFlattenCoversAllTypedFields pins the
invariant.
Simplification:
* refine_preset_override_to_dict and refine_stage_override_to_dict
were byte-identical; collapse to a single refine_override_to_dict.
* Trim narrative / PR-migration prose from docstrings and re-export
shims: stage_overrides.py module + field docstrings, schema.py
CompileConfig + PipelineSelection.vae_tiling, presets.py
LTX2_TWO_STAGE header, configs/pipelines/__init__.py and
pipelines/stages/__init__.py and ltx2/stages/__init__.py.
SolitaryThinker
9a15721d28