The 18 blocks are grouped into 7 uses (a block's "job": repaint,
new_background, upscale, refine, follow, detail, process); a block that is
not its use's default has a "want" word (best, 2x, pose, ...).
add_nodes(use=…, want=…) has reference_blocks.pick choose the first by rank
this ComfyUI can run (packs and models present, not turned off), the block
taking a second picture when one is given; block= by name still works.
begin_task's directory is a line a use with its wants, the rest by what it
needs ("LanPaint: repaint best"), so it no longer grows with the blocks and
the word budget tiers are gone. Tried live: use=new_background with two
pictures built place_in_scene.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>