fix(h5): optimize camera flipping and angle haptics, refresh splash branding

h5/js/capture-quality.js

@@ -12,7 +12,7 @@
     yawDrift: 8, pitchDrift: 8, centerDrift: 0.055, sizeDrift: 0.065 });
   function finite(v) { return typeof v === 'number' && isFinite(v); }
   function evaluate(d, options) {
-    var failed = function(hint) { return { ok: false, hint: hint }; };
+    var failed = function(hint, reason) { return { ok: false, hint: hint, reason: reason || 'quality' }; };
     if (!d) return failed('未检测到人脸');
     if (options.count !== 1) return failed('请保持单人出镜');
     var box = d.detection.box, w = options.width, h = options.height;
@@ -31,7 +31,7 @@
     var target = options.target;
     if (options.ignoreDirection && target !== 'front') target = pose.yaw < 0 ? 'left' : 'right';
     var check = HeadPose.check(d.landmarks.positions, target, options.mirrored);
-    if (!check.ok) return failed(check.hint);
+    if (!check.ok) return failed(check.hint, finite(check.yaw) ? 'angle' : 'quality');
     if (!finite(options.luma)) return failed('请保持面部清晰');
     if (options.luma < config.dark) return failed('请到光线充足处');
     if (options.luma > config.bright) return failed('光线过强,请避开强光');