Documents the gotcha where convert_hf_to_gguf.py crashes with
'config.json not found' because the training output directory holds
only the LoRA adapter, not a merged HF model. Includes inline
save_pretrained_merged() fix snippet, verification checklist, and
resume-pipeline-without-retraining pattern.
Discovered today during the MajorTwin v8c pipeline failure (Step 4).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
