Keep command creation, dispatch and response handling in the game action
layer. HandMenu requests the typed operation and presents the count and
failure dialogs. Show the chosen recipient, distinguish the count action
from the immediate single-card reveal, and use the game window as parent.
Third-party deck tools (e.g. Delver Lens) export decks as tab-separated rows
such as "2 Card Name Set Name". Card names never contain tab characters,
so a leading numeric column marks a tabular record: the first two columns are read
as the quantity and card name, and any further columns are discarded as
printer/set metadata.
- deck_list: parse tab-delimited rows before whitespace collapsing
- tests: cover tab-separated mainboard and sideboard imports
- docs: document the accepted plain-text import format (fills the TODO)
Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>