- Fix _sequence_frame_count excluding direct interpolation frames,
which caused export range max to be too small and truncate output
- Fix blend_images call missing optical flow parameters (of_levels,
of_winsize, of_iterations, of_poly_n, of_poly_sigma) — optical
flow blends in transition export used defaults instead of user config
- Fix progress bar not reaching 100% when direct interpolation is
used — current_op was never incremented for generated frames
- Fix BiM-VFI temp files (bimvfi_temp_*.png) not cleaned up by
orphan removal in manager.py
- Update "+" row text to say "AI transition" instead of "RIFE/FILM"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>