pub async fn open_split_floor(storage: &StorageSqlx) -> Result<Option<Height>>Expand description
The lowest forkHeight of the splits still open, if any. The guard
holds every coin whose creator is mined at or above it until its
splitResolved: the header service answers one branch, and which
branch stands is open (depth is the host’s; the ruling of 2026-10-16,
the scenario tracker-split-observation-writes-no-word.md column 4).