- drop the player-card test (components removed)
- new: '+ слот' grows attunements to 4+ and a new slot binds an item
- new: armor class starts at 16 (mock) and persists through a reload
- player card shows the mock character (name, class, level, XP)
- add a spell via a vacant slot, undo with Ctrl+Z, redo with Ctrl+Y
- remove a spell empties its slot back to vacant
- a prepared spell survives a reload (autosave round trip)
- attune an item, reload keeps it, clear empties the slot