fix(h5): center score stack, lock profile scroll and gate turn guidance

h5/js/app.js

@@ -304,6 +304,11 @@
 
   var carousel = $('#skin-carousel');
   skinSwipe = SwipeTrack.create(carousel, track, { count: SKINS.length, onSelect: goSkin });
+  // Limit the iOS rubber-band fallback to the fixed profile itself. The mobile
+  // wheel pickers live under body, so their vertical scrolling is untouched.
+  $('#s-profile').addEventListener('touchmove', function (e) {
+    if (e.cancelable) e.preventDefault();
+  }, { passive: false });
   function cancelSkinDrag() { skinSwipe.cancel(); }
   carousel.addEventListener('keydown', function (e) {
     if (e.key === 'ArrowLeft' || e.key === 'ArrowRight') { e.preventDefault(); goSkin(skinIndex + (e.key === 'ArrowRight' ? 1 : -1)); }
@@ -766,7 +771,14 @@
     m.classList.toggle('no-face', cls === 'no-face');
     m.classList.toggle('ok', cls === 'ok');
   }
+  /* camera-hint-stage-pure-begin */
+  function captureStageHint(text, target, hasFrontPhoto) {
+    if ((target === 'front' || !hasFrontPhoto) && (text === '请向左转头' || text === '请向右转头')) return '请正对屏幕';
+    return text;
+  }
+  /* camera-hint-stage-pure-end */
   function setHint(text, ok, silent) {
+    text = captureStageHint(text, CAM_STEPS[camStep].target, !!photos[0]);
     var h = $('#cam-hint');
     if (!text) { h.classList.remove('show', 'ok'); lastHint = ''; voice.dropHint(); return; }
     if (text !== lastHint) {
@@ -949,7 +961,7 @@
     $('#cam-next').classList.remove('show');
     applyMirror();
     resetDetectState();
-    voice.play(VOICE.step[camStep]); // 步骤引导语音
+    if (camStep === 0 || photos[camStep - 1]) voice.play(VOICE.step[camStep]); // 前一步合格照片已保存，才播下一步引导
   }
 
   var camSeq = 0; // 流程令牌:退出拍照/开始拍照时递增,使未决的快门/分析回调失效