feat(sync): recover missed events after realtime reconnect (#1175) - #1284
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Track a persisted replay cursor and backfill events that arrived during a disconnect, triggered both by reconnect and inbound sequence gaps. Closes rinafcode#1175
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Summary
Closes #1175
Backfills realtime events that arrive while the transport is down, using a persisted replay cursor and a catch-up query.
src/store/synchronizationEngine.ts— after every reconnect / inbound sequence gap, fetches events since the last applied sequence, rehydrates owned slices, and advances the persisted cursorsrc/lib/graphql/subscriptions.ts— catch-up listeners (onSubscriptionCatchUp),requestRealtimeCatchUp(since)via the active clientVerification
tsc clean; sync + subscriptions suites: 27 tests, only 2 pre-existing baseline failures unrelated to this change.