feat: add note formatting keyboard shortcuts

Tests/ConjureKitTests/NotesMarkupTests.swift

@@ -80,7 +80,7 @@ func hiddenNoteMarkupKeepsTypingDeletionFormattingAndUndoAtVisibleBoundaries() t
     editor.moveRight(nil)
     #expect(editor.selectedRange().location == editor.string.utf16.count)
     editor.setSelectedRange(NSRange(location: word.location, length: 0))
-    let italic = try #require(descendants(controller.view).compactMap { $0 as? NSButton }.first { $0.toolTip == "Italic" })
+    let italic = try #require(descendants(controller.view).compactMap { $0 as? NSButton }.first { $0.accessibilityLabel() == "Italic" })
     // Selecting the body and toggling formatting must remove its hidden delimiters.
     editor.setSelectedRange(word)
     italic.performClick(nil)
@@ -88,3 +88,76 @@ func hiddenNoteMarkupKeepsTypingDeletionFormattingAndUndoAtVisibleBoundaries() t
     #expect(controller.save())
     #expect(try NotesStore(directory: directory).notes.first?.contents.string == "# ATitle\nword")
 }
+
+@Test @MainActor
+func notesFormattingShortcutsToggleCombinedStylesAndRespectPopupFocus() throws {
+    _ = NSApplication.shared
+    let suite = "NotesFormattingKeys.\(UUID().uuidString)"
+    let defaults = try #require(UserDefaults(suiteName: suite))
+    let directory = FileManager.default.temporaryDirectory.appendingPathComponent(suite)
+    defer {
+        defaults.removePersistentDomain(forName: suite)
+        try? FileManager.default.removeItem(at: directory)
+    }
+    let launcher = LauncherWindowController(
+        history: LaunchHistory(defaults: defaults, now: { Date(timeIntervalSinceReferenceDate: 12_000) }),
+        defaults: defaults, notesDirectory: directory)
+    let window = try #require(launcher.window)
+    defer { launcher.dismiss(restoringFocus: false) }
+    launcher.present(command: .notes)
+    let content = try #require(window.contentView)
+    func descendants(_ view: NSView) -> [NSView] { [view] + view.subviews.flatMap(descendants) }
+    let editor = try #require(descendants(content).compactMap { $0 as? NotesTextView }.first)
+    let controller = try #require(editor.delegate as? NotesController)
+    func shortcut(_ key: String, shift: Bool = false, option: Bool = false) throws -> Bool {
+        var flags: NSEvent.ModifierFlags = .command
+        if shift { flags.insert(.shift) }
+        if option { flags.insert(.option) }
+        let event = try #require(NSEvent.keyEvent(with: .keyDown, location: .zero, modifierFlags: flags,
+            timestamp: 1, windowNumber: window.windowNumber, context: nil,
+            characters: shift ? key.uppercased() : key, charactersIgnoringModifiers: shift ? key.uppercased() : key,
+            isARepeat: false, keyCode: 0))
+        return window.performKeyEquivalent(with: event)
+    }
+    editor.insertText("fox 🦊", replacementRange: editor.selectedRange())
+    editor.setSelectedRange(NSRange(location: 0, length: editor.string.utf16.count))
+    #expect(try shortcut("b"))
+    #expect(editor.markdownString == "**fox 🦊**")
+    #expect(try shortcut("i"))
+    #expect(editor.markdownString == "***fox 🦊***")
+    let font = try #require(editor.textStorage?.attribute(.font, at: editor.selectedRange().location,
+        effectiveRange: nil) as? NSFont)
+    let traits = NSFontManager.shared.traits(of: font)
+    #expect(traits.contains(.boldFontMask) && traits.contains(.italicFontMask))
+    #expect(try shortcut("i"))
+    #expect(editor.markdownString == "**fox 🦊**")
+    #expect(try shortcut("b"))
+    #expect(editor.markdownString == "fox 🦊")
+
+    let hide = try #require(descendants(content).compactMap { $0 as? NSButton }.first { $0.toolTip == "Hide formatting" })
+    hide.performClick(nil)
+    #expect(try shortcut("x", shift: true))
+    #expect(editor.markdownString == "~~fox 🦊~~")
+    #expect(try shortcut("x", shift: true))
+    #expect(editor.markdownString == "fox 🦊")
+    #expect(!(try shortcut("b", option: true)))
+    #expect(editor.markdownString == "fox 🦊")
+
+    editor.breakUndoCoalescing()
+    editor.undoManager?.removeAllActions()
+    editor.undoManager?.beginUndoGrouping()
+    #expect(try shortcut("e"))
+    editor.undoManager?.endUndoGrouping()
+    #expect(editor.markdownString == "`fox 🦊`")
+    editor.undoManager?.undo()
+    #expect(editor.markdownString == "fox 🦊")
+    #expect(try shortcut("k"))
+    let search = try #require(descendants(content).compactMap { $0 as? NSSearchField }.first { $0.accessibilityLabel() == "Search notes actions" })
+    #expect(window.firstResponder !== editor)
+    _ = try shortcut("b")
+    #expect(editor.markdownString == "fox 🦊")
+    #expect(search.stringValue.isEmpty)
+    #expect(controller.handle(#selector(NSResponder.cancelOperation(_:))))
+    #expect(controller.save())
+    #expect(try NotesStore(directory: directory).notes.first?.contents.string == "fox 🦊")
+}