Ships 177df72 — registration failures are logged instead of swallowed, a failed eager chunk-map build falls back to prepare:false rather than losing the registration, and seedOverlayServeMap now registers anything _index.json advertises that the overlay cannot serve. Deployed to repair hyper-tps v0.919.0, whose 471 MB Windows bundle tabertron holds and advertises but never registered with the overlay, so stortron has been answered "no holder" since 18:38.