AnkiCardQueue
Identifies the active, inactive, or preview queue in which Anki stores a card.
@ New
The new-card queue; AnkiScheduling.Due is normally a display position.
@ SchedulerBuried
A card temporarily buried by the scheduler or user; persisted as -3.
@ Preview
A temporary preview queue used by applicable filtered-deck operations; persisted as 4.
@ SiblingBuried
A card temporarily buried because a sibling was shown; persisted as -2.
@ Review
The graduated review queue; AnkiScheduling.Due is a collection-relative day number.
@ DayLearning
A day-based learning or relearning queue whose due value is a collection-relative day number.
@ Learning
The intraday learning queue; AnkiScheduling.Due is normally Unix seconds.
@ Suspended
An explicitly suspended card; persisted as -1 while retaining its underlying card type.