fix: wire quest progress tracking for transfer, daily, trivia, and exam events

These domain events were only connected to dashboard recording but never
called questService.handleEvent(), so quests with triggers TRANSFER_OUT,
DAILY_REWARD, TRIVIA_WIN, and EXAM_REWARD never tracked progress. Added
userId and tx to event payloads and switched from emit to emitAsync for
transaction atomicity.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

shared/modules/economy/exam.service.ts

@@ -243,7 +243,7 @@ export const examService = {
             }
 
             // Record dashboard event
-            systemEvents.emit(EVENTS.DOMAIN.EXAM_PASSED, { username: user.username, reward });
+            await systemEvents.emitAsync(EVENTS.DOMAIN.EXAM_PASSED, { userId, username: user.username, reward, tx: txFn });
 
             return {
                 status: ExamStatus.AVAILABLE,