feat: implement P1 logging levels & privacy optimizations
- Add LoggingManager.java: Optimized logging with privacy controls
* Structured logging with configurable levels
* Privacy protection for sensitive data
* Performance optimization and monitoring
* Log filtering and sanitization
* Performance timing and statistics
- Add PrivacyManager.java: Privacy configuration and data protection
* GDPR compliance controls
* Data anonymization with multiple privacy levels
* Privacy settings management
* Sensitive data detection and removal
* Consent management and data retention
Logging & Privacy Improvements:
- Configurable log levels (VERBOSE, DEBUG, INFO, WARN, ERROR)
- Automatic sanitization of emails, phones, SSNs, credit cards
- Performance timing and statistics tracking
- GDPR-compliant privacy controls
- Multiple privacy levels (NONE, BASIC, ENHANCED, MAXIMUM)
- Sensitive data detection and anonymization
- User consent management
- Configurable data retention periods
P1 Priority 4: Logging levels & privacy - COMPLETE ✅
🎉 ALL P1 PRIORITIES COMPLETE! 🎉
- P1 Priority 1: Split plugin into modules ✅
- P1 Priority 2: Room hot paths & JSON cleanup ✅
- P1 Priority 3: WorkManager hygiene ✅
- P1 Priority 4: Logging levels & privacy ✅
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