Add configurable game/initial screen width and distance, with a bundled first-run config

- Video Options tab offers width and distance presets independently for
  the Initial Screen (splash/intro/menu) and Game Screen (gameplay)
  profiles, with their preset step/offset configurable via
  questshock.config.json.
- Ships res/questshock.config.default.json as the initial config on
  first run (or whenever questshock.config.json doesn't exist yet),
  refreshed from the APK on every launch without touching a user's own
  saved config.

android/app/src/main/cpp/questshock_native.c

@@ -132,6 +132,33 @@ Java_de_ladkau_questshock_MenuOverlay_nativeRequestResetPosition(JNIEnv *env, jc
     qs_config_request_reset_position();
 }
 
+// MenuOverlay's Video Options tab - "Initial Screen"/"Game Screen" width/
+// distance preset rows, same enqueue-only reasoning as above.
+JNIEXPORT void JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeRequestSetInitialScreenWidth(JNIEnv *env, jclass clazz,
+                                                                          jint presetIndex) {
+    qs_config_request_set_initial_screen_width(presetIndex);
+}
+
+JNIEXPORT void JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeRequestSetGameScreenWidth(JNIEnv *env, jclass clazz,
+                                                                       jint presetIndex) {
+    qs_config_request_set_game_screen_width(presetIndex);
+}
+
+JNIEXPORT void JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeRequestSetInitialScreenDistance(JNIEnv *env,
+                                                                             jclass clazz,
+                                                                             jint presetIndex) {
+    qs_config_request_set_initial_screen_distance(presetIndex);
+}
+
+JNIEXPORT void JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeRequestSetGameScreenDistance(JNIEnv *env, jclass clazz,
+                                                                          jint presetIndex) {
+    qs_config_request_set_game_screen_distance(presetIndex);
+}
+
 // Read-only queries - safe to call directly (no enqueue needed, see
 // qs_config.h's own comment on each of these).
 JNIEXPORT jboolean JNICALL
@@ -144,6 +171,42 @@ Java_de_ladkau_questshock_MenuOverlay_nativeGetResolutionIndex(JNIEnv *env, jcla
     return qs_config_current_resolution_index();
 }
 
+JNIEXPORT jint JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetInitialScreenWidthIndex(JNIEnv *env, jclass clazz) {
+    return qs_config_current_initial_screen_width_index();
+}
+
+JNIEXPORT jint JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetGameScreenWidthIndex(JNIEnv *env, jclass clazz) {
+    return qs_config_current_game_screen_width_index();
+}
+
+JNIEXPORT jint JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetInitialScreenDistanceIndex(JNIEnv *env,
+                                                                           jclass clazz) {
+    return qs_config_current_initial_screen_distance_index();
+}
+
+JNIEXPORT jint JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetGameScreenDistanceIndex(JNIEnv *env, jclass clazz) {
+    return qs_config_current_game_screen_distance_index();
+}
+
+// Preset button *labels* (not the current value) - shared by both
+// "Initial Screen" and "Game Screen" columns, since their offset/step is
+// config-file-only, not per-profile (see qs_config.h's own comment).
+JNIEXPORT jfloat JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetScreenWidthPresetValue(JNIEnv *env, jclass clazz,
+                                                                       jint index) {
+    return qs_config_screen_width_preset_value(index);
+}
+
+JNIEXPORT jfloat JNICALL
+Java_de_ladkau_questshock_MenuOverlay_nativeGetScreenDistancePresetValue(JNIEnv *env, jclass clazz,
+                                                                          jint index) {
+    return qs_config_screen_distance_preset_value(index);
+}
+
 JNIEXPORT jint JNICALL
 Java_de_ladkau_questshock_MenuOverlay_nativeGetLanguage(JNIEnv *env, jclass clazz) {
     return qs_config_current_language();