gui: remove Stop button (ESC handles it) and debug logs

gui/main.qml

@@ -62,12 +62,8 @@ ApplicationWindow {
     Shortcut {
         sequence: "Escape"
         onActivated: {
-            console.log("ESC shortcut, activeState:", ollie.activeState)
             if (ollie.activeState !== "idle") {
-                console.log("ESC: calling interrupt()")
                 ollie.interrupt()
-            } else {
-                console.log("ESC: ignored (idle)")
             }
         }
     }
@@ -619,11 +615,6 @@ ApplicationWindow {
                 }
 
                 Item { Layout.fillWidth: true }
-
-                ToolButton {
-                    text: "Stop"
-                    onClicked: ollie.interrupt()
-                }
             }
 
             Rectangle { Layout.fillWidth: true; height: 1; color: theme.midColor }