# Task: Gamification (Stats & Badges)

## Objective

Implement a stats engine and badge system to reward user engagement.

## Steps

- [x] **Stats Engine**:
  - [x] Create service to calculate "Times Played" for songs.
  - [x] Create service to calculate "Gap" (shows since last played).
  - [x] Expose stats via `Song` and `Show` API responses.
- [x] **Badges**:
  - [x] Create `Badge` model (name, icon, description).
  - [x] Create `UserBadge` model (user_id, badge_id, awarded_at).
  - [x] Implement logic to award badges (e.g., "First Review", "10 Shows Attended").
- [x] **Frontend**:
  - [x] Display Song Stats on Song Detail page.
  - [x] Display User Badges on Profile page.

## Acceptance Criteria

- Song page shows "Times Played" and "Gap".
- User profile displays earned badges.