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Implement comprehensive points and badges system with MongoDB transactions: Point System: - Create PointTransaction model for transaction history - Award points atomically using MongoDB transactions - Point values: street adoption (+100), task completion (+50), post creation (+10), event participation (+75) - Track balance after each transaction - Support point deduction for reward redemption Badge System: - Create Badge and UserBadge models - Define badge criteria types: street_adoptions, task_completions, post_creations, event_participations, points_earned - Auto-award badges based on user achievements - Badge rarity levels: common, rare, epic, legendary - Track badge progress for users - Prevent duplicate badge awards Gamification Service: - Implement gamificationService.js with 390 lines of logic - awardPoints() with transaction support - checkAndAwardBadges() for auto-awarding - getUserBadgeProgress() for progress tracking - getUserStats() for achievement statistics - Atomic operations prevent double-awarding Integration: - Streets route: Award points and badges on adoption - Tasks route: Award points and badges on completion - Posts route: Award points and badges on creation - Events route: Award points and badges on RSVP - Rewards route: Deduct points on redemption - Badges API: List badges, track progress, view earned badges Updated User Model: - Add points field (default 0) - Add earnedBadges virtual relationship - Add indexes for performance (points for leaderboards) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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