[UI/UX] QUEST Tab - Progress and Rewards Improvements

Part of #187

## Tab Purpose
Progress tracking and rewards

## Required Changes
- [ ] Active Quests section (Daily, Weekly)
- [ ] Rewards section (Coins, Unlocks)
- [ ] Progress Tracker with completion percentage
- [ ] Streak tracking UI

## UX Rules
- No music player visible
- No greetings, no quotes

## Files
- app/lib/features/quest/presentation/screens/quest_list_screen.dart