XY-1060: [ELF AMK P1] Build Memory Inbox and Ledger correction loop

[yvette-carlisle]

Summary

• Promote reviewed consolidation proposals into approved operational memory records with source-linked audit metadata.
• Add review-backed supersede/delete/restore correction handling, history readback, and admin correction route.
• Repair promotion ownership, shared-scope grant/project semantics, update effective-scope validation, and proposal apply row-locking.
• Update normative specs and focused coverage for correction, promotion, and shared-grant behavior.

Validation

• cargo make fmt
• cargo make lint-fix
• cargo make checks

Review

• Independent fresh-context review initially found three current blockers.
• Repair commit fixed all accepted findings.
• Independent fresh-context repair verification returned clean for HEAD 699236f.