Backend Complete: Interface Refactoring & Service Container Enhancements
Repository Interface Optimization: - Created IBaseRepository.ts and IPaginatedRepository.ts - Refactored all 7 repository interfaces to extend base interfaces - Eliminated ~200 lines of redundant code (70% reduction) - Improved type safety and maintainability Dependency Injection Improvements: - Added EmailService and GameTokenService to DIContainer - Updated CreateUserCommandHandler constructor for DI - Updated RequestPasswordResetCommandHandler constructor for DI - Enhanced testability and service consistency Environment Configuration: - Created comprehensive .env.example with 40+ variables - Organized into 12 logical sections (Database, Security, Email, etc.) - Added security guidelines and best practices - Documented all backend environment requirements Documentation: - Added comprehensive codebase review - Created refactoring summary report - Added frontend implementation guide Impact: Improved code quality, reduced maintenance overhead, enhanced developer experience
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# Docker Watcher Implementation Guide
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## Overview
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This document explains the Docker watcher implementation for the SerpentRace project, which automatically synchronizes local file changes with Docker containers and rebuilds images when necessary.
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## What's Implemented
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### Docker Compose Watch Configuration
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The development Docker Compose configuration now includes `develop.watch` sections for both frontend and backend services that provide:
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1. **File Synchronization**: Automatically sync source code changes to running containers
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2. **Selective Rebuilding**: Rebuild containers when critical configuration files change
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3. **Intelligent Ignore Patterns**: Exclude unnecessary files like `node_modules`
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### Backend Watcher Configuration
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```yaml
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develop:
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watch:
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- action: sync
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path: ../SerpentRace_Backend/src
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target: /app/src
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ignore:
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- node_modules/
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- action: sync
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path: ../SerpentRace_Backend/package.json
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target: /app/package.json
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- action: rebuild
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path: ../SerpentRace_Backend/package-lock.json
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- action: rebuild
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path: ../SerpentRace_Docker/Dockerfile_backend.dev
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```
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### Frontend Watcher Configuration
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```yaml
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develop:
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watch:
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- action: sync
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path: ../SerpentRace_Frontend/src
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target: /app/src
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ignore:
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- node_modules/
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- action: sync
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path: ../SerpentRace_Frontend/public
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target: /app/public
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- action: sync
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path: ../SerpentRace_Frontend/package.json
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target: /app/package.json
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- action: rebuild
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path: ../SerpentRace_Frontend/package-lock.json
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- action: rebuild
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path: ../SerpentRace_Frontend/vite.config.js
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- action: rebuild
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path: ../SerpentRace_Docker/Dockerfile_frontend.dev
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```
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## How It Works
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### Sync Actions
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- **Purpose**: Instantly copy changed files from host to container
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- **Use Cases**: Source code files, static assets, configuration files that don't require rebuild
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- **Performance**: Near-instant updates, no container restart needed
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### Rebuild Actions
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- **Purpose**: Trigger full container rebuild when critical files change
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- **Use Cases**: Package files, Docker configuration, build configuration
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- **Performance**: Takes longer but ensures consistency
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## Usage
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### New Commands Added
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#### Windows (docker-manage.bat)
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```bash
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# Start with file watchers
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.\docker-manage.bat dev:watch
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# Traditional start (without watchers)
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.\docker-manage.bat dev:start
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```
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#### Linux/Mac (docker-manage.sh)
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```bash
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# Start with file watchers
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./docker-manage.sh dev:watch
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# Traditional start (without watchers)
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./docker-manage.sh dev:start
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```
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### Command Differences
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| Command | Mode | File Watching | Container Rebuild | Use Case |
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|---------|------|---------------|-------------------|----------|
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| `dev:start` | Background (-d) | No | Manual only | Traditional development |
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| `dev:watch` | Foreground | Yes | Automatic | Modern development with live sync |
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## Benefits
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### 1. Instant File Synchronization
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- Source code changes are immediately available in containers
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- No manual rebuild or restart required for code changes
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- Maintains all existing hot-reload functionality (nodemon, Vite HMR)
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### 2. Smart Rebuilding
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- Automatically rebuilds when package.json or Dockerfile changes
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- Ensures containers stay consistent with dependency updates
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- Prevents common issues with stale dependencies
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### 3. Development Efficiency
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- Combines Docker's isolation with native-like development speed
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- Reduces context switching between local and containerized development
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- Maintains consistent environment across team members
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## File Patterns Watched
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### Backend
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- **Synced Files**:
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- `src/` directory (all TypeScript source files)
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- `package.json` (for runtime reference)
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- **Rebuild Triggers**:
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- `package-lock.json` (dependency changes)
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- `Dockerfile_backend.dev` (container configuration)
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### Frontend
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- **Synced Files**:
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- `src/` directory (React components, styles, etc.)
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- `public/` directory (static assets)
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- `package.json` (for runtime reference)
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- **Rebuild Triggers**:
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- `package-lock.json` (dependency changes)
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- `vite.config.js` (build configuration)
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- `Dockerfile_frontend.dev` (container configuration)
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## Performance Considerations
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### Sync Performance
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- File synchronization is near-instantaneous
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- Uses Docker's built-in file watching mechanisms
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- Optimized for development workloads
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### Rebuild Performance
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- Rebuilds only occur when necessary
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- Docker layer caching reduces rebuild times
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- Can be resource-intensive for large dependency changes
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## Troubleshooting
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### Common Issues
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1. **File Changes Not Reflected**
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- Ensure you're using `dev:watch` command
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- Check that files are not in ignore patterns
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- Verify file paths are correct
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2. **Excessive Rebuilds**
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- Check for unnecessary changes to rebuild trigger files
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- Consider moving files to sync-only patterns if appropriate
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3. **Performance Issues**
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- Monitor Docker resource usage
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- Consider excluding large directories from watching
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- Use `.dockerignore` for files that should never be synced
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### Debugging Commands
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```bash
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# Check container status
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docker-compose -f SerpentRace_Docker/docker-compose.dev.yml ps
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# View watcher logs
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docker-compose -f SerpentRace_Docker/docker-compose.dev.yml logs -f backend
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docker-compose -f SerpentRace_Docker/docker-compose.dev.yml logs -f frontend
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# Check file synchronization
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docker exec -it serpentrace-backend-dev ls -la /app/src
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docker exec -it serpentrace-frontend-dev ls -la /app/src
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```
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## Requirements
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### Docker Compose Version
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- Requires Docker Compose v2.22+ for `develop.watch` support
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- Check version: `docker-compose version`
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### File System
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- Works on Windows, Linux, and macOS
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- Performance may vary based on file system type
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- WSL2 recommended for Windows users
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## Migration from Traditional Setup
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### No Breaking Changes
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- Existing `dev:start` command continues to work
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- All volume mounts remain functional
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- Hot reload functionality preserved
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### Gradual Adoption
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1. Try `dev:watch` for active development
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2. Use `dev:start` for background services
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3. Gradually migrate team to new workflow
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## Best Practices
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### Development Workflow
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1. Use `dev:watch` during active development
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2. Make code changes normally
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3. Watch for automatic synchronization
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4. Monitor logs for any sync issues
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### File Organization
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- Keep frequently changed files in sync patterns
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- Place build configuration in rebuild patterns
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- Use `.dockerignore` for files that should never sync
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### Team Collaboration
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- Document which command team members should use
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- Ensure consistent Docker Compose version across team
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- Share troubleshooting steps for common issues
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## Future Enhancements
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### Potential Improvements
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1. **Selective Service Watching**: Watch only specific services
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2. **Custom Ignore Patterns**: Per-developer ignore configurations
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3. **Performance Monitoring**: Built-in sync performance metrics
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4. **Integration with IDEs**: Better editor integration for sync status
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### Configuration Expansion
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- Additional file patterns as needed
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- Service-specific watch configurations
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- Environment-based watch rules
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