docs: reorganize project structure and update root README

Project Organization:
- Moved configuration files to project-config/ directory
- Moved documentation files to documentation/ directory
- Moved security reports to security/ directory
- Moved backup files to backup-config/ directory
- Created PROJECT_ORGANIZATION_SUMMARY.md documenting changes
- Updated all script references to new file locations

Root README Simplification:
- Replaced 715-line detailed README with 95-line structure guide

documentation/SETUP.md

@@ -0,0 +1,152 @@
+# AITBC Setup Guide
+
+## Quick Setup (New Host)
+
+Run this single command on any new host to install AITBC:
+
+```bash
+sudo bash <(curl -sSL https://raw.githubusercontent.com/oib/aitbc/main/setup.sh)
+```
+
+Or clone and run manually:
+
+```bash
+sudo git clone https://gitea.bubuit.net/oib/aitbc.git /opt/aitbc
+cd /opt/aitbc
+sudo chmod +x setup.sh
+sudo ./setup.sh
+```
+
+## What the Setup Script Does
+
+1. **Prerequisites Check**
+   - Verifies Python 3.13.5+, pip3, git, systemd
+   - Checks for root privileges
+
+2. **Repository Setup**
+   - Clones AITBC repository to `/opt/aitbc`
+   - Handles multiple repository URLs for reliability
+
+3. **Virtual Environments**
+   - Creates Python venvs for each service
+   - Installs dependencies from `requirements.txt` when available
+   - Falls back to core dependencies if requirements missing
+
+4. **Runtime Directories**
+   - Creates standard Linux directories:
+     - `/var/lib/aitbc/keystore/` - Blockchain keys
+     - `/var/lib/aitbc/data/` - Database files  
+     - `/var/lib/aitbc/logs/` - Application logs
+     - `/etc/aitbc/` - Configuration files
+   - Sets proper permissions and ownership
+
+5. **Systemd Services**
+   - Installs service files to `/etc/systemd/system/`
+   - Enables auto-start on boot
+   - Provides fallback manual startup
+
+6. **Service Management**
+   - Creates `/opt/aitbc/start-services.sh` for manual control
+   - Creates `/opt/aitbc/health-check.sh` for monitoring
+   - Sets up logging to `/var/log/aitbc-*.log`
+
+## Runtime Directories
+
+AITBC uses standard Linux system directories for runtime data:
+
+```
+/var/lib/aitbc/
+├── keystore/     # Blockchain private keys (700 permissions)
+├── data/         # Database files (.db, .sqlite)
+└── logs/         # Application logs
+
+/etc/aitbc/       # Configuration files
+/var/log/aitbc/   # System logging (symlink)
+```
+
+### Security Notes
+- **Keystore**: Restricted to root/aitbc user only
+- **Data**: Writable by services, readable by admin
+- **Logs**: Rotated automatically by logrotate
+
+## Service Endpoints
+
+| Service | Port | Health Endpoint |
+|---------|------|----------------|
+| Wallet API | 8003 | `http://localhost:8003/health` |
+| Exchange API | 8001 | `http://localhost:8001/api/health` |
+| Coordinator API | 8000 | `http://localhost:8000/health` |
+| Blockchain RPC | 8545 | `http://localhost:8545` |
+
+## Management Commands
+
+```bash
+# Check service health
+/opt/aitbc/health-check.sh
+
+# Restart all services
+/opt/aitbc/start-services.sh
+
+# View logs (new standard locations)
+tail -f /var/lib/aitbc/logs/aitbc-wallet.log
+tail -f /var/lib/aitbc/logs/aitbc-coordinator.log
+tail -f /var/lib/aitbc/logs/aitbc-exchange.log
+
+# Check keystore
+ls -la /var/lib/aitbc/keystore/
+
+# Systemd control
+systemctl status aitbc-wallet
+systemctl restart aitbc-coordinator-api
+systemctl stop aitbc-exchange-api
+```
+
+## Troubleshooting
+
+### Services Not Starting
+1. Check logs: `tail -f /var/lib/aitbc/logs/aitbc-*.log`
+2. Verify ports: `netstat -tlnp | grep ':800'`
+3. Check processes: `ps aux | grep python`
+4. Verify runtime directories: `ls -la /var/lib/aitbc/`
+
+### Missing Dependencies
+The setup script handles missing `requirements.txt` files by installing core dependencies:
+- fastapi
+- uvicorn
+- pydantic
+- httpx
+- python-dotenv
+
+### Port Conflicts
+Services use these default ports. If conflicts exist:
+1. Kill conflicting processes: `kill <pid>`
+2. Modify service files to use different ports
+3. Restart services
+
+## Development Mode
+
+For development with manual control:
+
+```bash
+cd /opt/aitbc/apps/wallet
+source .venv/bin/activate
+python simple_daemon.py
+
+cd /opt/aitbc/apps/exchange
+source .venv/bin/activate
+python simple_exchange_api.py
+
+cd /opt/aitbc/apps/coordinator-api/src
+source ../.venv/bin/activate
+python -m uvicorn app.main:app --host 0.0.0.0 --port 8000
+```
+
+## Production Considerations
+
+For production deployment:
+1. Configure proper environment variables
+2. Set up reverse proxy (nginx)
+3. Configure SSL certificates
+4. Set up log rotation
+5. Configure monitoring and alerts
+6. Use proper database setup (PostgreSQL/Redis)