chore(staging): ship bundled tokenizers for Qwen-Image/Edit + Z-Image too

Same gap as the Flux2Klein bundle in the previous commit: bin/tokenizers/<arch>/
was never tracked in git, so the single-file loading modes (bundled all-in-one
checkpoint, qf_flat export, ComfyUI UNETLoader) had no tokenizer for these arches
either. (The Model Auto Loader was unaffected — it now sources the tokenizer
from the downloaded model_dir.) Commit the remaining three arches so every arch's
single-file modes load. .gitignore already tracks non-binary bin files.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>