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esh-pfi-infrastructure/docs/pfi
vh bcf63db527 docs(erp-dpo): readiness survey for the DPO stage
Run 2 is an SFT on the official instruct base, so it will refuse at near-stock
rates by design; targeted DPO is where refusals get pruned on chosen axes. That
was the trade accepted when the stock base was picked over a third-party
abliteration.

Surveys what is on disk against what the stage needs. Ready: the merged tune,
the SFT adapter, GPU0 once the eval seat comes down, the whole non-loss half of
the SFT harness, two unvetted Gutenberg preference sets, and the LitBench-RM
judge.

Missing, in order of pain: preference data for the refusal axes (nothing on
disk targets it -- the Gutenberg sets are prose-quality), the axis list itself,
and a DPO trainer (trl is not installed).

The gating item is not technical: WHICH refusal axes are in scope and which are
explicitly kept. Data generation, pair counts, the held-out split and the
success probe are all functions of that list, so nobody should generate a pair
before it is written down. Flags that the domain-compliance probe should
measure run 2 BEFORE pruning, since the pre-number is the only baseline that
will ever exist.

Also records the operational trap: do the trl install AFTER a run finishes,
never during one -- a resolution that upgrades transformers under a live
process can break its save path.
2026-08-26 01:18:41 -07:00
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