Status: IN
Event sourcing snapshots are triply limited: stored as ephemeral in-memory dicts (lost on restart), excluding subscriber callbacks (requiring re-registration), and ignored by `reconstruct_state` (which always replays from the beginning).
Three independent limitations compound to make snapshots a partial optimization rather than a complete recovery mechanism
Depends on (SL): es-snapshots-are-in-memory-dicts, snapshot-state-excludes-subscription, reconstruct-state-no-snapshot-support