feat(h5): update skin scoring, age display and capture countdown

h5/test/color-copy.js

@@ -0,0 +1,35 @@
+'use strict';
+const assert=require('node:assert/strict');
+const SS=require('../js/skin-score'),UI=require('../js/report-ui');
+const descriptions=['无明显黑眼圈','仅存在轻度黑眼圈','存在中度黑眼圈','可见明显黑眼圈'];
+const templates={
+  改善:'检测到当前肌肤色素分 88，存在色素沉着较显著，{note}，整体透亮感不足。',
+  良好:'检测到当前肌肤色素分 88，局部有色素沉积；{note}，整体状态稳定，局部透亮感稍弱。',
+  优秀:'检测到当前肌肤色素分 88，无明显色素沉积，{note}；肤色均匀透亮。'
+};
+let checked=0;
+for(const [P,level] of [[79.99,'改善'],[80,'良好'],[89.99,'良好'],[90,'优秀'],[100,'优秀']]){
+  for(const severity of [0,1,2,3,null,undefined,-1,4,1.5,'2',NaN,Infinity]){
+    const result=structuredClone(SS.MOCK_RESULT);
+    result.score_info.melanin_score=88;
+    // Opposite score/type must never dictate the severity phrase.
+    result.score_info.dark_circle_score=severity===3?100:0;
+    result.dark_circle={value:3};
+    if(severity===undefined)delete result.dark_circle_severity;
+    else result.dark_circle_severity={value:severity};
+    const vm=SS.buildViewModel(result,SS.MOCK_SIDE,{});
+    vm.cats.tone.P=P;vm.cats.tone.level=P<80?'预警':P<90?'改善':'良好';
+    const before=JSON.stringify({vm,result});
+    const presentation=UI.build(vm,result),view=presentation.views.find(v=>v.key==='color');
+    const valid=Number.isInteger(severity)&&severity>=0&&severity<=3;
+    const expected=valid?templates[level].replace('{note}',descriptions[severity]):templates[level].replace(/\{note\}[，；]/,'');
+    assert.equal(view.level,level);assert.equal(view.text,expected);
+    assert(!view.text.includes('评分'));assert(!view.text.includes('20%'));assert(!/[{}]/.test(view.text));
+    assert.equal(JSON.stringify({vm,result}),before,'presentation never mutates scores or input');
+    checked++;
+  }
+}
+const missing=structuredClone(SS.MOCK_RESULT);delete missing.score_info.melanin_score;
+const v=UI.build(SS.buildViewModel(missing,SS.MOCK_SIDE,{}),missing).views.find(v=>v.key==='color');
+assert.equal(v.valid,false);assert(!v.text.includes('色素分'));
+console.log('PASS color copy: '+checked+' level/severity combinations, score-independent severity, missing/invalid omission, boundaries and immutable scoring');