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Motivation: the v3 storage migration preserves legacy refs exactly, so structural Git integrity alone cannot detect refs written through the pre-v3 GRASP-06 path traversal. Operators need an online, post-migration answer without extending the production outage. Approach: add a second startup pass that derives owner refs from the NIP-01-preferred State of the confirmed maintainer set and PR refs from accepted PR/PR Update events, including exact GRASP-06 and active-purgatory scoping. Fetch missing expected objects through the hardened repair path, repair unambiguous drift, and preserve unexplained refs with bounded manual-inspection logs. Correctness: authoritative events are refreshed while holding the family lease, ref updates use compare-and-swap, and anything changed since the initial online snapshot is left untouched. This assumes the accepted event database and existing membership/GRASP-06 predicates are authoritative. The offline migration is deliberately unchanged, and unexplained PR refs are not auto-deleted because they may be evidence. Validation: cargo fmt --all -- --check; cargo clippy --workspace --all-targets -- -D warnings; cargo test --locked; cargo test --lib --locked (892 passed after the final race guard).