Root cause: ComfyUI auto-randomizes INT inputs named "seed", generating a new seed each queue run. Progress was keyed by seed, so each new seed started from scratch. - Rename "seed" input to "shuffle_order" to prevent auto-randomization - Store completed combo hashes in a flat set instead of per-seed keys (combo hashes are already order-independent, so progress persists regardless of shuffle order) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>