iClock-Sync v1.1.0 - Performance & Reliability Release

🎯 Major Improvements

• 99%+ reduction in Firebase API calls
• High-performance caching with 99%+ efficiency
• Smart date filtering reducing processing by 99%
• Comprehensive data validation preventing invalid uploads
• Optimized sync intervals (5min instead of 5sec)

🐛 Critical Fixes

• Fixed cache return value bug causing massive API overhead
• Added staffId validation preventing invalid data uploads
• Enhanced error handling for graceful invalid log processing
• Implemented proper time range filtering

📊 Performance Impact

• Records per sync: 26k → ~300 (99% reduction)
• API calls per hour: 18M+ → ~3,600 (99.98% reduction)
• Cache efficiency: 0% → 99%+ (fully functional)

Production-ready system with major performance improvements.