Implement Smart Lab Guardian - Flutter app for real-time lab safety monitoring

.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+
+# iOS/XCode
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral/
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Web
+/web/
+
+# Windows
+windows/
+
+# Linux
+linux/
+
+# macOS
+macos/

CHANGELOG.md

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+# Changelog
+
+All notable changes to Smart Lab Guardian will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2024-10-20
+
+### Added
+- Initial release of Smart Lab Guardian
+- Real-time sensor monitoring dashboard
+  - Temperature sensor (°C)
+  - Gas level sensor (PPM)
+  - Fire detector
+  - Distance sensor (cm)
+- Alert system with automatic threshold monitoring
+- Configurable sensor thresholds in Settings
+- Local data persistence using SharedPreferences
+- Material Design 3 UI with bottom navigation
+- Color-coded status indicators (Safe/Warning/Danger)
+- Alert acknowledgment system
+- Simulated sensor data service
+- Comprehensive documentation
+  - README with feature overview
+  - Quick Start Guide
+  - Hardware Integration Guide
+  - Firebase Setup Guide
+  - Contributing Guidelines
+- Unit tests for models and services
+- Widget tests for UI components
+- Clean architecture with separation of concerns
+  - Models layer
+  - Services layer
+  - Providers layer (Riverpod)
+  - UI layer (Screens and Widgets)
+
+### Technical Details
+- Flutter SDK 3.0.0+
+- State management: Riverpod 2.4.0
+- Local storage: SharedPreferences 2.2.2
+- Charts: FL Chart 0.65.0
+- Support for future Firebase integration
+- Support for future Hive database integration
+
+### Documentation
+- Inline code comments explaining integration points
+- Hardware sensor integration examples
+- Arduino code examples for common sensors
+- Firebase cloud sync setup instructions
+
+## [Unreleased]
+
+### Planned Features
+- [ ] Real hardware sensor integration
+- [ ] Firebase cloud synchronization
+- [ ] Push notifications for critical alerts
+- [ ] Historical data charts
+- [ ] Data export functionality
+- [ ] Multi-lab support
+- [ ] User authentication
+- [ ] Sensor calibration interface
+- [ ] Custom alert rules
+- [ ] Email/SMS notifications
+- [ ] Dark mode support
+- [ ] Multi-language support
+
+### Future Enhancements
+- WebSocket support for real-time updates
+- Offline mode with sync when online
+- Advanced analytics dashboard
+- Sensor health monitoring
+- Maintenance scheduling
+- Integration with lab management systems
+- API for third-party integrations
+- Mobile app for iOS and Android
+- Desktop app for Windows/macOS/Linux
+
+## Version History
+
+### Version Numbering
+- **Major version**: Breaking changes or significant new features
+- **Minor version**: New features, backward compatible
+- **Patch version**: Bug fixes and minor improvements
+
+Example: 1.2.3
+- 1 = Major version
+- 2 = Minor version
+- 3 = Patch version
+
+---
+
+For more information, see the [README](README.md).