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fin-hub/docs/evidence/FIN-WP-0003-precutover-2026-08-31.md
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feat: complete fabric authority cutover contract 
Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a053ff-1d6f-7fe2-ac1c-a6eb40a42a0c
2026-08-31 22:18:39 +02:00

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FIN-WP-0003 pre-cutover evidence — 2026-08-31

The new gate was exercised against the current local Fabric registry and the live State Hub projection:

PYTHONPATH=src .venv/bin/python -m fin_hub.cli fabric-cutover-check \
  --authority http://127.0.0.1:8765/exports/financial \
  --projection http://127.0.0.1:8000/fabric/graph/summary

Result: expected exit 2, ready: false.

Measure Fabric authority State Hub read model
API version railiance.fabric/v1alpha2 railiance.fabric/v1alpha2
Nodes 131 49
Edges 117 58
Actors 2 2
Fabrics 1 1
Unresolved 0 0

The content hashes differ. The authority now supplies immutable snapshot-set revision and path provenance; the old State Hub import has null source revision, path, and export time. This is a correct no-go result: the owner contract and checker are ready, but STATE-WP-0079 must refresh from one selected authority export and obtain a green comparison before switching callers or removing the legacy tables. No production route was changed by FIN-WP-0003.