make 'forget card' undoable; remove checkpoint() in set_due_date

ftl/core/undo.ftl

@@ -17,3 +17,4 @@ undo-update-tag = Update Tag
 undo-update-note = Update Note
 undo-update-card = Update Card
 undo-update-deck = Update Deck
+undo-forget-card = Forget Card

qt/aqt/scheduling.py

@@ -58,7 +58,6 @@ def set_due_date_dialog(
 
         on_done()
 
-    mw.checkpoint(tr(TR.ACTIONS_SET_DUE_DATE))
     mw.taskman.with_progress(set_due, after_set)
 
 
@@ -78,7 +77,6 @@ def forget_cards(
 
         on_done()
 
-    mw.checkpoint(tr(TR.ACTIONS_FORGET))
     mw.taskman.with_progress(
         lambda: mw.col.sched.schedule_cards_as_new(card_ids), on_done_wrapper
     )

rslib/src/scheduler/new.rs

@@ -9,6 +9,7 @@ use crate::{
     notes::NoteID,
     search::SortMode,
     types::Usn,
+    undo::UndoableOpKind,
 };
 use rand::seq::SliceRandom;
 use std::collections::{HashMap, HashSet};
@@ -105,7 +106,7 @@ impl Collection {
     pub fn reschedule_cards_as_new(&mut self, cids: &[CardID], log: bool) -> Result<()> {
         let usn = self.usn()?;
         let mut position = self.get_next_card_position();
-        self.transact(None, |col| {
+        self.transact(Some(UndoableOpKind::ScheduleAsNew), |col| {
             col.storage.set_search_table_to_card_ids(cids, true)?;
             let cards = col.storage.all_searched_cards_in_search_order()?;
             for mut card in cards {

rslib/src/undo/ops.rs

@@ -12,6 +12,7 @@ pub enum UndoableOpKind {
     RemoveDeck,
     RemoveNote,
     RenameDeck,
+    ScheduleAsNew,
     SetDueDate,
     Suspend,
     UnburyUnsuspend,
@@ -38,6 +39,7 @@ impl Collection {
             UndoableOpKind::RemoveDeck => TR::DecksDeleteDeck,
             UndoableOpKind::RemoveNote => TR::StudyingDeleteNote,
             UndoableOpKind::RenameDeck => TR::ActionsRenameDeck,
+            UndoableOpKind::ScheduleAsNew => TR::UndoForgetCard,
             UndoableOpKind::SetDueDate => TR::ActionsSetDueDate,
             UndoableOpKind::Suspend => TR::StudyingSuspend,
             UndoableOpKind::UnburyUnsuspend => TR::UndoUnburyUnsuspend,