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- IIdGenerator<TKey> (Initial + Next) models a successor-based id strategy - IdGenerators.Int32/Int64 factories for the common integral keys
- PersistenceStateStore keeps a per-type high-water key (GetLastKey/SetLastKey), cleared with buckets - descriptor gains optional keySetter + idGenerator; AllocateNextKey, NoteKey (max, never lowers), IsDefaultKey, SetKey, and high-water serialize/load hooks - an auto-id registration requires a keySetter
…ter on replay - EntityStore.UpsertAsync allocates the next key when an auto-id entity has a default key, writes it back onto the clone and the caller's instance, and advances the high-water on explicit keys - descriptor ApplyUpsert notes the key so journal replay resumes numbering without reuse - add internal IInternalAutoIdDescriptor seam so EntityStore reaches auto-id ops through the interface
…terPersistedEntity - snapshot captures per-type high-water keys into a reserved bucket (type id 65535) and restores them on load - RegisterPersistedEntity gains optional keySetter + idGenerator; rejects the reserved type id - ids continue across restart and never regress after deleting the highest entity
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Adds opt-in server-assigned keys to SquidStd.Persistence.
What
IIdGenerator<TKey>(Initial + Next) with built-inIdGenerators.Int32/Int64RegisterPersistedEntitygains optionalkeySetter+idGenerator; when a generator is supplied the type is auto-idEntityStore.UpsertAsyncassigns the next key when the caller leaves it at default, writing it back onto the entityCompatibility
keySelector-only registrations and the descriptor constructor are unchangedTests