📅 Day 3: Core Check-in System & Streak Tracking\n\nBuilt the heart of ShipStreaks - the check-in system!\n\n✅ **Check-in Features:**\n- Created rich check-in forms with multiple input types\n- Implemented streak calculation and tracking\n- Added progress visualization with charts\n- Built check-in history and timeline views\n- Added effort tracking and task completion\n\n🔥 **Streak Logic:**\n- Automatic streak calculation based on daily check-ins\n- Streak freeze tokens for planned breaks\n- Streak recovery system for missed days\n- Visual streak indicators and badges\n\n🎨 **UI/UX Improvements:**\n- Designed beautiful check-in cards\n- Added smooth animations and transitions\n- Implemented responsive design for mobile\n- Created intuitive navigation between views\n\n📊 **Data & Analytics:**\n- Real-time streak updates\n- Progress tracking with percentages\n- Task completion statistics\n- Effort hour summaries\n\nThe core functionality is alive! Users can now track their daily progress and maintain streaks. 🎆