fix: render light palettes with matching appearance

Sources/Conjure/SettingsWindowController.swift

@@ -32,7 +32,7 @@ final class SettingsWindowController: NSWindowController, NSWindowDelegate {
             defer: false
         )
         window.title = "Conjure Settings"
-        window.appearance = NSAppearance(named: .darkAqua)
+        window.appearance = ThemePalette.appearance
         window.titlebarAppearsTransparent = true
         window.backgroundColor = .clear
         window.isOpaque = false
@@ -201,6 +201,8 @@ final class SettingsWindowController: NSWindowController, NSWindowDelegate {
         }
         themeObservation = ThemeObservation { [weak self] in
             guard let self else { return }
+            self.window?.appearance = ThemePalette.appearance
+            self.window?.attachedSheet?.appearance = ThemePalette.appearance
             for label in [heading, loginHeading, translationHeading] { label.textColor = ThemePalette.text }
             for label in [instructions, self.statusLabel, spotlight] { label.textColor = ThemePalette.secondaryText }
             self.errorLabel.textColor = ThemePalette.error
@@ -234,6 +236,7 @@ final class SettingsWindowController: NSWindowController, NSWindowDelegate {
                 setUninstallRecoveryReport(result)
             } else { result = report }
             let alert = NSAlert()
+            alert.window.appearance = ThemePalette.appearance
             alert.messageText = result.needsRecovery ? "Recovery needs attention" : "Recovery complete"
             alert.informativeText = result.messages.isEmpty ? "No pending files need recovery." : result.messages.joined(separator: "\n")
             await alert.beginSheetModal(for: window)