fix: QA report BUG-01 to BUG-12 full resolution - demo switcher, AI tutor stream, timeline alignment, cbt filtering, danger styling, streak celebration

src/app/dashboard/cbt/history/[attemptId]/page.tsx

@@ -102,7 +102,17 @@ export default function AttemptHistoryPage({ params }: { params: Promise<{ attem
             <CardContent className="p-4 flex flex-col items-center justify-center">
               <Award className="text-[#00F0FF] mb-2" size={24} />
               <div className="text-sm text-muted-foreground font-bold uppercase">Score</div>
-              <div className="text-2xl font-bold">{scoreCalc} <span className="text-sm text-muted-foreground">/ {maxScore}</span></div>
+              <div className="text-2xl font-bold flex items-center justify-center gap-1.5">
+                <span className={scoreCalc <= 0 ? "text-red-500 font-black" : (scoreCalc / maxScore) >= 0.6 ? "text-green-500" : "text-amber-500"}>
+                  {scoreCalc}
+                </span>
+                <span className="text-sm text-muted-foreground">/ {maxScore}</span>
+                {scoreCalc <= 0 && (
+                  <span className="text-[10px] font-extrabold uppercase px-1.5 py-0.5 rounded bg-red-500/10 text-red-500 border border-red-500/20">
+                    Fail
+                  </span>
+                )}
+              </div>
             </CardContent>
           </Card>
           <Card className="bg-secondary/30 border-border flex-1 md:min-w-48">