docs: add sponsor acknowledgment

Add donation and REAP navigation banner

Update model card links and support block

Update model card links and REAP methodology

Add support link

Add YAML metadata header

Add comprehensive model card with training details, loss curves, and usage guide

Training in progress, step 800, checkpoint

Training in progress, step 800

Training in progress, step 600, checkpoint

Training in progress, step 600

Training in progress, step 400, checkpoint

Training in progress, step 400

Training in progress, step 200, checkpoint

Training in progress, step 200

initial commit