[aviggiano]

Summary

• make structured ultrafuzz/reference-expectations@2 catalogs the sole lens authority
• require lens and fan-in artifacts to omit reference_expectations when no authorized IDs exist
• preserve the canonical-subset-of-lens semantic gate and add regression coverage for fabricated fan-in IDs

Validation

• prompt semantic-anchor tests
• focused runtime artifact-gate tests
• package and repository validation
• independent review
• required GitHub checks

Closes #285

Greptile Summary

The PR makes structured reference-expectation catalogs authoritative and completes the previously requested empty-array omission enforcement.

• Lens artifacts must omit reference_expectations when no identifiers are authorized.
• Fan-in artifacts preserve only identifiers carried by source lenses and must omit empty expectation fields.
• Runtime and semantic regression tests cover omission and fabricated fan-in identifiers.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
packages/runtime/src/artifact-gates.ts	Enforces true omission for empty lens and fan-in expectation fields while preserving source-to-canonical subset validation.
packages/runtime/test/artifact-gates.test.ts	Adds regression coverage for empty fields, absent catalogs, and fabricated fan-in expectation identifiers.
packages/runtime/test/fixtures/reference-expectation-authority.ts	Provides minimized treatment and control fixtures for fabricated expectation provenance.
packages/prompts/test/semantic-anchors.test.ts	Verifies that shipped prompts consistently describe structured-catalog authority and omission semantics.
.ultrafuzz/prompts/properties/property-specification-fanin.md	Restricts fan-in expectation IDs to identifiers already authorized and carried by contributing lens rows.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  A[Structured reference-expectations catalog] --> B[Lens prompt and authority gate]
  B --> C[Authorized lens reference IDs]
  C --> D[Fan-in prompt and preservation gate]
  D --> E[Canonical property reference IDs]
  A -. absent .-> F[Lens must omit field]
  C -. no IDs .-> G[Fan-in must omit field]

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_{Reviews (4): Last reviewed commit: "Merge remote-tracking branch 'origin/mai..." | Re-trigger Greptile}

Context used (3)

• Knowledge Base — Artifacts
• Knowledge Base — Prompts
• Knowledge Base — Runtime: Run Orchestration Lifecycle