feat: add menus, a toolbar and a shortcut reference

Actions were a QHash of std::function dispatched by an event filter,
which nothing could put in a menu. They are QActions now, bound from
KeyMap so a [keys] override reaches the menus as well as the keyboard.

Menu bar covers every action; the toolbar carries only Sync, Archive,
Delete and Undo. Help > Keyboard shortcuts is generated from the actions,
so it shows what the keys really do rather than a copy that drifts.
spam and load_remote gained defaults, having been unreachable without a
hand-written binding.

The event filter is gone. Probing showed QAction shortcuts are dispatched
before the focused widget sees the key, so they beat QAbstractItemView's
type-to-search without one, and Qt already suppresses plain-letter
shortcuts while an editable widget has focus. Dropping the filter's
blanket guard also lets Ctrl+Q work while the query bar has focus.

registeredActionNames() is derived from the actions rather than
hand-maintained, so the two drift tests it needed are replaced by checks
that a configured binding reaches its action.

No confirmation dialogs: tag mutations still answer to undo.

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/test_keymap.cpp b/tests/test_keymap.cpp
index e63c151..c81eeb0 100644
--- a/tests/test_keymap.cpp
+++ b/tests/test_keymap.cpp
@@ -33,6 +33,7 @@ private slots:
     void invalidSequenceIsReported();
     void collidingOverridesAreReported();
     void bareCapitalMatchesShiftedPress();
+    void userBindingWinsOverDefaultInMenus();
     void defaultsDoNotCollide();
     void everyDefaultIsAKnownAction();
 };
@@ -100,6 +101,38 @@ void TestKeyMap::bareCapitalMatchesShiftedPress()
     QVERIFY(caseMap.warnings().isEmpty());
 }
 
+void TestKeyMap::userBindingWinsOverDefaultInMenus()
+{
+    // loadOverrides() adds a binding without removing the default, so two
+    // sequences reach 'archive'. sequenceFor() is what the menus and the
+    // shortcut reference display: it must show the user's, not the built-in
+    // one they were trying to replace.
+    QTemporaryDir dir;
+    const QString path = dir.filePath(QStringLiteral("t.conf"));
+    {
+        QSettings s(path, QSettings::IniFormat);
+        s.beginGroup(QStringLiteral("keys"));
+        s.setValue(QStringLiteral("Ctrl+Alt+A"), QStringLiteral("archive"));
+        s.endGroup();
+    }
+
+    KeyMap map;
+    map.loadDefaults();
+    QSettings s(path, QSettings::IniFormat);
+    map.loadOverrides(s);
+
+    QCOMPARE(map.sequenceFor(QStringLiteral("archive")),
+             QKeySequence(QStringLiteral("Ctrl+Alt+A")));
+
+    // The default still fires; it is only no longer the advertised one.
+    QCOMPARE(map.actionFor(KeyMap::defaultSequenceFor(QStringLiteral("archive"))),
+             QStringLiteral("archive"));
+
+    // An action the user left alone still shows its default.
+    QCOMPARE(map.sequenceFor(QStringLiteral("delete")),
+             KeyMap::defaultSequenceFor(QStringLiteral("delete")));
+}
+
 void TestKeyMap::defaultsDoNotCollide()
 {
     // Two defaults on one sequence means one of them is unreachable, and the