pub fn heal_global_snapshot_source_block_ids(
gfs: &FileStore,
def_ids: &[String],
) -> usizeExpand description
One-shot heal for global snapshots poisoned before the normalize-on-mirror fix
(a channel-local sourceBlockId was mirrored into agent:<defId>:current,
breaking cross-channel opens). For each def_id, rewrite its global snapshot’s
sourceBlockId to “” iff it isn’t already. Idempotent and cheap (one small
JSON per agent); returns the number healed. Best-effort per agent.