Phase 6.3: fix the augmentation, close the holdout leak, stop rewarding invented parameters

Dataset build (05, 06):
perturb_value is gone. It rewrote only tool_calls.arguments and left the
tool results and the final answer saying something else, which is how
data/train.jsonl ended up with 30 self-contradictory examples where the
call says issue_number 82 and the answer says issue #77. Variation now
comes from hand-written meta.paraphrases, or from meta.variation applied
atomically across every field of the example at once. Nothing is
substituted unless the seed declares it: guessing which number in a string
is safe to change is what produced the contradictions in the first place.
Prefix injection survives only as a fallback and only where the verb form
can actually be conjugated, and there is a hard assert that no user turn
matches the broken "Necesito que ¿Podés..." shape that 68 v1 prompts had.
The penpot bucket is exempt from substitution entirely, since its payloads
are code. Also asserts the bucket cannot collapse (verified: the old seeds
give 320 rows from 83 unique trajectories and the build now fails) and
scans for forbidden API patterns by importing them from the linter, so
there is one source of truth.

06 now actually exits 1 on over-length rows. It printed [FILTERED],
incremented a counter, and left the row in the file, which 10_train.py
then trained on since it has no max_seq_length and batch 1.

Gate 2 (32): reject any argument key absent from the schema, as its own
failure category. It only checked required fields, so an invented scale or
filePath passed - the gate was actively rewarding the exact behaviour this
phase removes. Verified: export_shape with scale=2 now fails as
unknown_argument, while a valid call still passes.

Holdout (31, 35): rebalanced to penpot 60 / 35 each, added 20 real design
templates, and replaced the full-string equality check with 6-gram
shingles. Measured: a light paraphrase of a train.jsonl prompt scores 43%
overlap and now fails the build, where the old check let it through at
"not equal". Value pools are asserted disjoint from the corpus. The
"2x resolution" template stays, relabelled as an invented-argument probe
now that gate 2 can detect one; the createBoolean template stays because
the API is real and the new B2 seeds teach it. Also dedupes: the old
holdout had 15 duplicate prompts out of 200, i.e. 15 wasted measurements.

Note: rebalancing the holdout means the 192/200 gate 2 baseline from phase
5 no longer applies to it, so that baseline has to be re-measured against
production on the new file before it can be compared to.

Gate 3 (33): 11 content checklists for the non-obvious conventions of the
other MCPs - GFM table separators in Docmost, the update_page staleness
retry, commit message shape, never merging the PR, dict-not-XML tool
arguments. That is the most likely regression no gate currently covers.

Mix builder: added the anti-collapse guard, so 420 new-portion rows that
are really 96 trajectories repeated cannot pass unnoticed.

This commit is contained in:

aleleba

2026-07-30 17:16:05 +00:00

parent 19eb50f351

commit a60d0751cf

9 changed files with 2046 additions and 402 deletions

data/holdout_prompts.jsonl

+200 -200

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