Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/STRUCTURE.md

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+# Monorepo Structure
+
+## Directory Overview
+
+### `/frontend`
+Frontend application code.
+
+- **`public/`**: Static HTML, CSS, JavaScript files served directly
+  - `index.html`: Main explorer interface
+- **`src/`**: Source files (if using build tools like webpack, vite, etc.)
+- **`assets/`**: Images, fonts, and other static assets
+
+### `/backend`
+Backend services (if needed for future enhancements).
+
+- **`api/`**: API service code
+- Currently empty - explorer uses Blockscout API directly
+
+### `/scripts`
+Deployment and utility scripts.
+
+- **`deploy.sh`**: Deploy explorer to production
+- **`test.sh`**: Test explorer functionality
+
+### `/docs`
+Documentation files.
+
+- **`DEPLOYMENT.md`**: Deployment instructions
+- **`STRUCTURE.md`**: This file
+- Additional documentation as needed
+
+### `/deployment`
+Deployment configurations and templates.
+
+### `/config`
+Configuration files.
+
+- **`deployment.json`**: Deployment settings for different environments
+
+## File Organization
+
+```
+explorer-monorepo/
+├── frontend/
+│   ├── public/
+│   │   └── index.html          # Main explorer interface
+│   ├── src/                    # Source files (if using build tools)
+│   └── assets/                 # Static assets
+├── backend/                    # Backend services (future)
+├── scripts/
+│   ├── deploy.sh               # Deployment script
+│   └── test.sh                 # Testing script
+├── docs/
+│   ├── DEPLOYMENT.md           # Deployment guide
+│   └── STRUCTURE.md            # This file
+├── deployment/                 # Deployment configs
+├── config/
+│   └── deployment.json         # Environment configs
+├── .gitignore                  # Git ignore rules
+├── package.json                # Root package.json
+└── README.md                   # Main README
+```
+
+## Adding New Features
+
+### Frontend Changes
+
+1. Edit `frontend/public/index.html` directly (current approach)
+2. Or set up build tools in `frontend/src/` for compiled output
+
+### Backend Changes
+
+1. Add API services to `backend/api/`
+2. Update deployment scripts if needed
+
+### Documentation
+
+1. Add docs to `docs/` directory
+2. Update README.md as needed
+