feat(casting): add DEBUG_TOUCH_ZONES overlay for hit-area calibration

components/casting/player/CastPlayerEpisodeControls.tsx

@@ -12,6 +12,7 @@ import { useTranslation } from "react-i18next";
 import { Pressable, View } from "react-native";
 import type { RemoteMediaClient } from "react-native-google-cast";
 import { Text } from "@/components/common/Text";
+import { DEBUG_TOUCH_ZONES } from "@/utils/casting/debug";
 
 interface CastPlayerEpisodeControlsProps {
   /** Bottom safe-area inset, used to offset the fixed control row. */
@@ -153,6 +154,21 @@ export function CastPlayerEpisodeControls({
           </Text>
         )}
       </Pressable>
+
+      {__DEV__ && DEBUG_TOUCH_ZONES && (
+        <View
+          pointerEvents='none'
+          style={{
+            position: "absolute",
+            top: 0,
+            bottom: 0,
+            left: 0,
+            right: 0,
+            borderWidth: 1,
+            borderColor: "lime",
+          }}
+        />
+      )}
     </View>
   );
 }