{ "manifest_version": 3, "name": "CtrlMute", "version": "1.0", "description": "A basic toggle mute extension.", "permissions": [ "tabs" ], "background": { "service_worker": "background.js" }, "commands": { "toggle-mute": { "suggested_key": { "default": "Ctrl+M" }, "description": "Toggle mute for the current tab" } } }