docs: honest ROADMAP silhouette

feat(adapter): Unsloth QLoRA ABSTAIN_OVERSAMPLE=4 (does not overwrite SZL-Khipu-1.5B)

docs(card): INTI copy contract — ROADMAP. first sentence + roadmap tag

docs: 6a91ba2c ERROR abstain still 2/6; live 6a91bf11 RUNNING report_to=none

Disclose KHIPU-R2 abstain job; never overwrite signed 1.5B

docs(card): Series A KHIPU-R2 lookbook card — cutting, no weights yet