Require durable proof machinery to justify its seam - #3
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Body 1,121 -> 615 words; total payload ~3,450 -> 615 (-82%). Every retained rule traces to an observed failure or measured delta; the v3 battery on gpt-5.6-sol (isolated no-skill/current/candidate conditions) and a ~3,300- session trace analysis are recorded in docs/testing.md and docs/design-rationale.md. New: 'accidental behaviour is not a contract' (counters an observed compatibility-alias failure); sharpened activation description (30/30 positives, 0/30 near-miss fires). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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What changed
Adds one proof-portfolio rule: before a higher proof seam creates durable apparatus, name the residual risk missed by the cheaper seam. Disproportionate apparatus means the proof seam is wrong.
Records the paired baseline/candidate pressure scenarios in
docs/testing.md.Why
A production-equivalent proof can otherwise self-justify as a permanent release gate even when its false-failure and maintenance surface exceed the risk it covers.
Impact
This is an additive instruction change. Skill discovery, invocation policy, profiles, and packaging are unchanged. Rollback is a one-commit revert of the payload plus its testing-log entry.
Checks
skills@1.5.23 add . --listfound exactlychange-with-proof