The toolbar now has a right-click menu to hide/show the status bar and
a short Master Volume slider (drag or scroll) that multiplies both
voice and notification volume via new Settings.effectiveOutputVolume()/
effectiveSoundVolume() helpers.
Also splits MainFrame's toolbar, menu bar and status bar construction
into their own MainToolbar/MainMenuBar/StatusBar classes, each talking
back to MainFrame only through a Listener interface.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
ericek111
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