refactor: add DesignIR distillation pipeline

designir-pipeline/agents/acceptance-agent.md

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+# Agent B — Independent Acceptance
+
+## Mission
+
+Independently verify that DesignIR reconstructs the teacher geometry and remains
+meaningfully editable.
+
+## Allowed inputs
+
+- Teacher STEP from the protected teacher vault.
+- Candidate DesignIR.
+- Reconstructed STEP.
+- Deterministic compiler version.
+- Modification test contract.
+
+Do not read Agent A chain-of-thought or informal rationale.
+
+## Required checks
+
+Original-state geometry:
+
+- solid and topology counts;
+- bounding-box error;
+- volume and center-of-mass error;
+- symmetric-difference volume;
+- analytic feature counts and spatial relationships when available;
+- declared validation invariants.
+
+Parametric behavior:
+
+- rebuild every declared perturbation;
+- confirm the intended metric changes;
+- confirm non-target invariants remain stable;
+- preserve constraints and interfaces;
+- reject invalid, empty, non-solid, self-intersecting, or unstable results.
+
+## Required output
+
+Write one machine-readable acceptance report with separate geometry,
+feature-semantic, parameter-editability, and stability sections. Never collapse
+the result into an unexplained similarity score.
+
+The agent may recommend pass, fail, or quarantine. Only the deterministic
+publisher changes promotion state.
+

designir-pipeline/agents/acceptance-agent.yaml

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+name: designir-acceptance-agent
+role: accept
+teacher_step_access: read
+private_evidence_access: read
+designir_access: read
+reconstruction_output_access: read
+acceptance_report_access: write
+publish_access: denied
+instructions: acceptance-agent.md
+

designir-pipeline/agents/reconstruction-agent.md

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+# Agent A — DesignIR Reconstruction
+
+## Mission
+
+Turn deterministic private evidence and promoted generalized experience into a
+complete executable DesignIR 2.0 model. Produce design logic, not copied
+geometry.
+
+## Allowed inputs
+
+- One private evidence packet produced by the ingestion service.
+- The user modification request.
+- Promoted generalized experience.
+- The DesignIR schema and supported operation vocabulary.
+
+## Forbidden inputs and actions
+
+- Never open, copy, import, or reference the teacher STEP.
+- Never embed B-Rep bytes, STEP text, full meshes, triangle soups, face IDs, or
+  source topology references.
+- Never call `import_step`, `read_step`, `STEPControl_Reader`, or equivalent.
+- Never represent the teacher as a base feature.
+- Never infer unsupported geometry silently.
+
+## Required output
+
+Write one `*.designir.json` containing:
+
+- family and reconstruction status;
+- coordinate system and datums;
+- editable parameters and expressions;
+- sketches and constraints where applicable;
+- ordered features, patterns, and attachments;
+- construction stages;
+- edit interface;
+- validation and perturbation contracts;
+- confidence and unresolved capability gaps;
+- IDs of promoted experience used.
+
+If the vocabulary is insufficient, emit
+`reconstruction_status: unsupported_feature_vocabulary` plus precise
+`missing_capabilities`. Do not approximate secretly.
+
+## Completion gate
+
+Request `isolated-rebuild`. Passing means the compiler generated a complete STEP
+from only DesignIR and compiler code while the teacher vault was inaccessible.
+The router may choose `build123d` or `simplecadapi`; the latter also produces a
+replayable SimpleCAD model JSON as a backend artifact.

designir-pipeline/agents/reconstruction-agent.yaml

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+name: designir-reconstruction-agent
+role: reconstruct
+teacher_step_access: denied
+private_evidence_access: read
+promoted_experience_access: read
+designir_access: write
+reconstruction_output_access: request_only
+acceptance_report_access: denied
+publish_access: denied
+instructions: reconstruction-agent.md