Fires when a row is inserted into this table. Broadcast — multiple
subscribers each receive every event. No replay: late subscribers do not
see past events. Fires synchronously during the transaction, before
lastBatch fires.
Resolves when the server has delivered the initial subscription batch
for this table. Completes exactly once; stays completed across
reconnects. Resolves even for empty tables (no row-count gate). Throws
SpacetimeDbSubscriptionException if the server rejects a subscription
query that references this table by name.
Returns a ValueNotifier that fires only when the row with this
primaryKey changes. Fires when the row's value changes per == —
a server touch that doesn't change any field is de-duplicated.