Louver v1.0.0

The first release.

• A volume slider and mute for every app, right in the menu bar — the one control macOS never shipped.
• Built on Core Audio process taps: no drivers, no kernel extensions, nothing to install beyond the app.
• Apps at full volume are untouched — their audio passes straight through the system as if Louver weren't running.
• Chrome- and Electron-style helper processes are grouped under the app you actually see.
• Volumes are remembered per app and reapplied when the app plays again, across relaunches.
• Follows the default output everywhere: switch to AirPods mid-song and the levels come along.