fix: match controller card to Xbox layout

Realign the card to the physical controller face: trigger bars and
bumper chips in the top corners, sticks side by side in the upper
center (stick clicks light up their rings instead of separate chips),
D-pad lower left, face buttons lower right, and the Guide button
centered between the clusters flanked by Select and Start.

Co-Authored-By: qwen3.8-27b@q3_k_xl: realigned card to Xbox layout

src/app/GamepadViews.swift

@@ -62,6 +62,8 @@ struct StickPadView: View {
     let label: String
     let x: Int16
     let y: Int16
+    // True while the stick is clicked in (LS/RS).
+    var pressed = false
 
     private let diameter: CGFloat = 64
 
@@ -71,8 +73,9 @@ struct StickPadView: View {
                 Circle()
                     .fill(Color.secondary.opacity(0.15))
                 Circle()
-                    .stroke(Color.secondary.opacity(0.35), lineWidth: 1)
-                    .padding(6)
+                    .stroke(pressed ? Color.green : Color.secondary.opacity(0.35),
+                            lineWidth: pressed ? 2.5 : 1)
+                    .padding(4)
                 Circle()
                     .fill(Color.accentColor)
                     .frame(width: 12, height: 12)
@@ -122,6 +125,27 @@ struct TriggerBarView: View {
     }
 }
 
+// The large Guide button, centered between the D-pad and face buttons.
+struct GuideButtonView: View {
+    let pressed: Bool
+
+    var body: some View {
+        VStack(spacing: 4) {
+            ZStack {
+                Circle()
+                    .fill(pressed ? Color.green : Color.secondary.opacity(0.25))
+                Image(systemName: "gamecontroller.fill")
+                    .font(.system(size: 14))
+                    .foregroundStyle(pressed ? .white : .secondary)
+            }
+            .frame(width: 36, height: 36)
+            Text("Guide")
+                .font(.caption2)
+                .foregroundStyle(.secondary)
+        }
+    }
+}
+
 struct ButtonChip: View {
     let button: XboxButton
     let pressed: Bool