feat: stronger visual scoring differentiation + streak fix

- Exakt cards: gold glow border, gold banner, trophy emoji, larger animated badge
- Tendency: green accent (was blue), clearer differentiation from Exakt
- Falsch: muted gray, reduced opacity — clearly "lost"
- Profile tip history: solid gold/green/gray badges with distinct borders
- Streak: remove utc_date <= NOW() filter so dev-finished matches count; handle PostgreSQL boolean serialization

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/routes/dashboard.ts

@@ -53,13 +53,13 @@ router.get('/', async (req: Request, res: Response): Promise<void> => {
       `SELECT CASE WHEN t.id IS NOT NULL THEN true ELSE false END AS has_tip
        FROM matches m
        LEFT JOIN tips t ON t.match_id = m.id AND t.user_id = $1
-       WHERE m.utc_date <= NOW() AND m.status IN ('FINISHED', 'IN_PLAY')
+       WHERE m.status IN ('FINISHED', 'IN_PLAY')
        ORDER BY m.utc_date DESC`,
       [userId]
     );
     let streak = 0;
     for (const m of pastMatches) {
-      if (m.has_tip) streak++;
+      if (m.has_tip === true || (m.has_tip as unknown) === 't' || (m.has_tip as unknown) === '1') streak++;
       else break;
     }