Aced Builder Impl

ACED Builder-Impl Governance — the eval-suite conformance bar

The Builder bar at the impl gate, specialized for agent-configuration artifact-types. It unions onto sdd:builder-impl-governance — the generic conformance bar still applies (checks derived from the frozen .feature, no green-by-tampering); this adds how an agent-config subject, which has no deterministic test runner, reaches a per-scenario boolean through a scored eval read directly from the frozen .feature. One merged bar loaded by both faces — the ACED impl-producer (define-agent / improve, forward, which builds the subject config) and the cold impl-judge (aced-impl-judge, backward, which runs the suite). producer ≠ judge holds at the agent level.

The bar

• The eval is the frozen scenario. The .feature is the single eval source: each scenario carries its own eval — a @rubric scenario's inline rubric docstring, a @trigger Scenario Outline's Examples, or a boolean Then. The rubric was authored inline by aced-scenario-writer and frozen at the spec gate; the impl-judge runs it and never free-authors one. A @rubric scenario missing its inline rubric block is a BLOCKER.
• Run policy is explicit — from eval.md. Read the eval: block: @trigger scenarios run eval.trigger.runs against eval.trigger.activation_threshold (accuracy); @behavior/@quality scenarios run N times against the scenario's inline threshold (else eval.judge.default_threshold), scored by eval.judge.model. Defaults when omitted: model claude-sonnet-4-6, default_threshold 4, trigger activation_threshold 0.5, trigger runs 3.
• Collapse to a boolean. A scenario passes when its aggregate total across the rubric's named dimensions ≥ threshold and no must-not-do was triggered (trigger scenarios: accuracy ≥ activation_threshold); IMPLEMENTATION_PASS is true only when every frozen scenario passes. Each dimension is scored against its own max — there is no scale shared across dimensions, and no single collapsed number stands for all of them.
• The runner is separate from the author. Independence comes from the frozen .feature anchor and from a runner (aced-case-judge) that is not the producer — the producer cannot declare its own pass.
• An eval-instrument subject → mutation-sweep-first (inherited). The cold-instrument doctrine on sdd:builder-impl-governance applies here unchanged: when the agent-config subject is itself a measurement or verification instrument — a rubric, an eval suite, a judge persona, a falsifier — a mutation sweep is the default verification method and reading it is supplementary. An author's own eval silently assumes the property under test, so a self-authored ablation over the instrument is not the whole check; sweep it.