# Lesson Learned #002: Project Structure Organization

## Issue Name
Project Structure Organization and Clean Root Directory

## Date
2025-08-02

## Description
Initial project setup had Docker configuration files scattered in the root directory, making the project structure cluttered and harder to navigate. This violated clean project organization principles.

## Root Cause
- Docker files (Dockerfile.backend, Dockerfile.frontend, docker-compose.yml) were placed in project root
- No established guidelines for file organization
- Lack of mandatory documentation for project issues

## Solution Applied
1. **Created organized folder structure**:
   ```
   job-forge/
   ├── src/                    # Source code only
   ├── tests/                  # Test files only
   ├── docs/                   # All documentation
   ├── docker/                 # All Docker-related files
   ├── database/               # Database scripts and migrations
   ├── .env.example           # Environment template
   ├── requirements-*.txt     # Python dependencies
   ├── pytest.ini            # Test configuration
   └── README.md              # Main project readme
   ```

2. **Moved Docker files to dedicated folder**:
   - Moved all Docker files to `docker/` directory
   - Updated docker-compose.yml paths to reference parent directory (`../`)
   - Updated project documentation to reflect new structure

3. **Created lessons-learned process**:
   - Created `docs/lessons-learned/` folder
   - Established mandatory documentation process for all issues
   - Added sequential numbering system for lesson learned entries

## Files Modified
- `docker/docker-compose.yml` - Updated paths for new structure
- `CLAUDE.md` - Added project structure requirements and lessons learned process
- `.claude/agents/*.md` - Updated all agent files with structure requirements
- `README.md` - Updated quick start instructions

## New Mandatory Requirements
1. **Clean Root Directory**: Only essential files in project root
2. **Docker Organization**: All Docker files in `docker/` folder
3. **Lessons Learned**: Document every issue in `docs/lessons-learned/`
4. **Sequential Documentation**: Use numbered format (###-issue-name.md)

## Prevention Strategy
1. Establish clear folder structure guidelines in project documentation
2. Add project structure validation to CI/CD if implemented
3. Regular project structure reviews during development
4. Mandatory issue documentation process for all team members

## Usage Instructions
```bash
# Start development environment from docker folder
cd docker
docker compose up -d

# Access applications
# Frontend: http://localhost:8501
# Backend: http://localhost:8000
# Database: localhost:5432
```

## Impact
- ✅ Clean, organized project structure
- ✅ Easier navigation and maintenance
- ✅ Established process for documenting project issues
- ✅ Better adherence to software engineering best practices
- ✅ Updated all team documentation and agent instructions