SKUs mapped externally (via SSH script or direct SQL) never triggered
resolve_missing_sku(), leaving them stuck as unresolved=0 indefinitely.
New reconcile_unresolved_missing_skus() revalidates ALL unresolved SKUs
against Oracle at sync, rescan, and CSV import time. Fail-soft on Oracle
down. Clears the 7 prod false positives on next sync or manual rescan.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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