Added soft-delete reliability sweeps and guardrails to prevent blocker residue from persisting across delete operations, including column drift detection, deleted row sweep guards, and in-progress delete reconciliation, with comprehensive test coverage and documentation updates to the soft-delete ve
Fusion-Task-Id: FN-5566
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
Fusion-Task-Id: FN-5566
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