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M4 independent verification

Verdict

VERIFIED on 2026-07-27.

  • Conductor implementation: b44e85e
  • Target implementation reviewed: 5d1e15e
  • Target merged commit: 2807bd4e665141ed82d4dd8a19c98dbfa2adb411
  • Successful authorization: AUTH-FF988C3DAE8C4AB5A1478748B5FB7ED4
  • Successful feedback: FDBK-F0F434EBB945466D8610E5503A342D12

Decisive estate result

The persisted evt.m4.real-estate-comparison.v1 and request-bound arel.m4.scenario-extends-intelligence edge support extend:

  • base: Germany Real Estate Intelligence;
  • component evidence: Real State Scenario App;
  • delta: formalize intelligence and evidence semantics first, then integrate the validated tax-aware scenario capability as an implementation component.

The typed fixture returns insufficient-context when its snapshot or exact delta is absent or changed.

Authorized execution

Germany Real Estate Intelligence PR #1 added an implementation-agnostic decision record, real Draft 2020-12 validation, reference-integrity checks, and tax/financing-aware semantics.

Validation reproduced:

  • Draft 2020-12 positive fixture;
  • missing required field, wrong type, additional property, unknown reference, tax-opaque record, and pre-tax scenario all rejected;
  • Vite production build passed.

Writeback and resume

  • Comparison page: 3aaec393-2263-8149-abdf-e7a6432aeaba
  • Completion page: 3aaec393-2263-814c-a2f3-d50ec65724a7
  • An identical second completion run created no duplicate.
  • Existing rows are accepted only after exact comparison of identity, plan, context, target relations, result, dates, evidence links, actions, decisions, unresolved items, and next action.
  • Duplicate stable IDs and poisoned resume fields fail closed.
  • A fresh process retrieved the exact Initiative, Product workstream, EstateComparison, completion authorization, merged commit, unresolved item, and next action.

Canary recovery

The canary exercised rollback twice:

  1. V1 guessed a workstream ID. Fresh Notion readback found the authoritative Product workstream ws.8fa55bcb8c1ab7f02a50; the target commit was reverted and the authorization received failed feedback.
  2. V2 passed its initial local canary but independent review found that the script did not execute the JSON Schema, tax-aware semantics were optional, and idempotent writeback could accept conflicting rows. The target change was reverted and failed feedback was recorded.
  3. V3 bound the authoritative workstream and corrected six-file target scope. Independent verification passed before merge and completion.

Failures remain visible rather than being rewritten as success.

Independent checks

  • M4 focused tests: 7 passed.
  • Complete Conductor service suite: 121 passed.
  • Strict MkDocs and diff checks passed.
  • Target diff matched the six authorized paths.
  • Conductor exposed no routine project-state mutation.

M4 exit conditions are satisfied. M5 may use these execution and recovery records only as non-binding experience inputs.