docs: note superseded by zen3-vl, weights retained

docs: honest base attribution / canonical-name note

Add LICENSE and NOTICE files for license compliance

Add NOTICE: Copyright Zen Authors

Update model card: add zen/zenlm tags, fix branding

fix: remove remaining upstream references

fix: remove upstream model references from README

Update: ADP (8.4GB) + xLAM (101MB) datasets downloaded, training in progress (24%)

Upload zen-vl-4b-instruct trained model

Initialize zen-vl-4b-instruct model card

initial commit