Self-contained single-file manager. Generates all required files on Install:

• media-control-solace (GTK3 + gtk-layer-shell Python GUI) -> ~/.local/bin/
• Desktop shortcut + SVG icon -> ~/.local/share/

Do not run as root.

-- WHAT THIS DOES -----------------------------------------------------------

Installs apt deps, writes the GUI Python script, desktop shortcut, and SVG icon. Desktop icon launches GUI directly via: Exec=python3 ~/.local/bin/media-control-solace Same pattern as AirPlay Solace and Cava Solace - confirmed working.

GUI has a single-instance guard: second launch exits silently if already running. Manager menu option 3 opens/closes via pgrep/kill.