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Package inbox holds the idempotent-consumer inbox row: the marker a domain step records, inside its own transaction, for every event it has processed, so a redelivered event is skipped (ADR-001 step 2).

Package log holds the system log row (the system_logs table) and the typed content of each kind of entry: the message and subscription logs, the login, registration, balance, commission, gift and order logs, and the traffic logs, rankings and daily statistics.

Package outbox holds the generic domain-event outbox row (ADR-001 step-6 preparation): appended in the owning domain's transaction, published onto the asynq queue by the dispatch pump, consumed idempotently via the inbox.

Package system holds the system settings row (the system table), one stored value per setting, and the parsing of the node settings kept in it.

Package task holds the task bookkeeping rows (the task and task_error tables) and the scope and content of the batch email and quota gift tasks they record.