fusion

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gsxdsm eb3833a542 FN-6971: retire dual-observe cutover gating

Remove stale dual-observe prerequisites from workflow-authoritative readiness while preserving parity-summary safeguards.

- Require the authoritative flag plus clean populated parity summaries for interpreter cutover readiness.
- Keep persisted workflowInterpreterDualObserve values inert in runtime tests and documentation.
- Update cutover, parity, and graph-executor tests to reflect retired shadow observation behavior.
- Add a formatted patch changeset for the operator-facing cutover readiness fix.

Files changed:
 .changeset/fn-6971-workflow-cutover-readiness.md   |  7 ++
 docs/architecture.md                               |  2 +-
 docs/settings-reference.md                         |  4 +-
 docs/workflow-steps.md                             | 19 +++--
 .../core/src/__tests__/workflow-cutover.test.ts    | 19 +++--
 packages/core/src/workflow-cutover.ts              |  9 +--
 .../workflow-interpreter-cutover.test.ts           | 87 +++++++++++++++++++---
 .../workflow-interpreter-dual-observe.test.ts      | 76 ++++++-------------
 .../src/__tests__/stepwise-workflow-parity.test.ts | 25 ++++---
 .../engine/src/workflow-authoritative-driver.ts    | 10 +--
 10 files changed, 152 insertions(+), 106 deletions(-)

Fusion-Task-Id: FN-6971
Fusion-Task-Lineage: 363a441d-62e5-403c-9389-75fcf788352a

2026-06-24 23:32:52 -07:00