Revise the unsafe Rust skill after the V3 evaluation - #3531
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## Glzlcl663nbggljjqi64x7gs3yyw5b7ys #3531 +/- ##
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Rework the proof model around lossless representations and locally checkable certificates, following the V3 gate failure and qualitative diagnosis. Require an explicit case domain for each quantified claim and describe how inputs map to obligation fibers. For equality, containment, disjointness, and incomparability claims, require the exact direction-specific certificate and the separating witnesses the relation demands. Treat feature, target, allocator, toolchain, and policy expressions as semantic sets whose operators must be justified before their denotations may be composed. Model ordered and fallible construction as a staged relation rather than an endpoint summary. Require transformations to retain enough information to reverse or independently check the derivation, and reject prose such as by inspection or all cases when the case mapping is not shown. Scope counterexamples to the verdict actually requested: one complete existential unsoundness witness closes UNSOUND, while exhaustive characterization is a separate deliverable. Preserve the V3 strengths: whole-execution UB reasoning, exact supported-domain coverage, producer quantifiers, verdict certificates, reconstructed-proof reporting, module-local invariant discipline, and the conditional abstraction-design workflow. Do not add fixture names or hazard lists to the agent-facing skill. gherrit-pr-id: Gavvgvuiorzpz3yzrmmlq5zb5inu3nazb
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Rework the proof model around lossless representations and locally checkable
certificates, following the V3 gate failure and qualitative diagnosis.
Require an explicit case domain for each quantified claim and describe how
inputs map to obligation fibers. For equality, containment, disjointness, and
incomparability claims, require the exact direction-specific certificate and
the separating witnesses the relation demands. Treat feature, target,
allocator, toolchain, and policy expressions as semantic sets whose operators
must be justified before their denotations may be composed.
Model ordered and fallible construction as a staged relation rather than an
endpoint summary. Require transformations to retain enough information to
reverse or independently check the derivation, and reject prose such as by
inspection or all cases when the case mapping is not shown. Scope
counterexamples to the verdict actually requested: one complete existential
unsoundness witness closes UNSOUND, while exhaustive characterization is a
separate deliverable.
Preserve the V3 strengths: whole-execution UB reasoning, exact supported-domain
coverage, producer quantifiers, verdict certificates, reconstructed-proof
reporting, module-local invariant discipline, and the conditional
abstraction-design workflow. Do not add fixture names or hazard lists to the
agent-facing skill.
Latest Update: v5 — Compare vs v4
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