fix: QA report bugs BUG-01 through BUG-11 resolved - streak modal close btn, calculator crash guard, AI chat auto-scroll, leaderboard zero-streak fix, name annotation cleanup everywhere, CBT score display colors, PrepPilot difficulty badge layout

src/app/dashboard/ai-coach/cbt-dpp/page.tsx

@@ -185,10 +185,12 @@ export default function AIDailyPracticePage() {
                   </div>
                   <h3 className="font-bold text-lg leading-tight group-hover:text-[#00F0FF] transition-colors">
                     {cleanTitle(dpp.title)}
-                    <span className={`ml-2 text-[10px] uppercase px-2 py-0.5 rounded-md border font-bold tracking-wider ${getDifficultyColor(dpp.difficulty)}`}>
+                  </h3>
+                  <div className="mt-1">
+                    <span className={`text-[10px] uppercase px-2 py-0.5 rounded-md border font-bold tracking-wider ${getDifficultyColor(dpp.difficulty)}`}>
                       {dpp.difficulty}
                     </span>
-                  </h3>
+                  </div>
                   <div className="text-sm text-muted-foreground mt-2 font-medium">
                     {count} Questions • {dpp.total_time} mins
                     {dpp.scheduled_date && (