Add VRG Hub integration documentation

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: chrisgermon

VRG-HUB-INTEGRATION.md

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+# D2D Integration with VRG Hub - Quick Reference
+
+## ✅ Integration Complete!
+
+D2D is now embedded in VRG Hub and accessible from anywhere users can access VRG Hub.
+
+## Access URLs
+
+### Through VRG Hub (Recommended)
+- **Primary:** `https://your-vrg-hub.com/d2d-converter`
+- **Alternative:** `https://your-vrg-hub.com/documents-to-dicom`
+
+### Direct Access (Private Network Only)
+- **Direct:** `http://10.200.1.8:8000`
+
+## How It Works
+
+```
+┌─────────────┐         ┌──────────────┐         ┌────────────┐
+│   User      │────────▶│   VRG Hub    │────────▶│ D2D Backend│
+│ (Anywhere)  │         │  (Public)    │         │ (10.200.1.8)│
+└─────────────┘         └──────────────┘         └────────────┘
+                              │                         │
+                         Reverse Proxy              Docker
+                         (vite config)              Container
+```
+
+## What Users See
+
+1. **Login to VRG Hub** (normal authentication)
+2. **Navigate to D2D Converter** page
+3. **Full D2D interface** embedded in VRG Hub
+4. **All features work** exactly the same:
+   - Document conversion
+   - Worklist query
+   - DICOM send to PACS
+   - Archive management
+
+## Technical Details
+
+### Files Modified in VRG Hub
+
+**1. vite.config.ts**
+- Added reverse proxy for `/d2d/*` routes
+- Forwards to `http://10.200.1.8:8000`
+- Handles WebSocket connections
+
+**2. src/pages/D2dConverter.tsx** (NEW)
+- Responsive page component
+- Embeds D2D via iframe
+- Loading states and error handling
+- Quick start guide
+
+**3. src/App.tsx**
+- Added routes for D2D converter
+- Lazy-loaded component
+- Two URL paths available
+
+### Proxy Configuration
+
+```typescript
+proxy: {
+  '/d2d': {
+    target: 'http://10.200.1.8:8000',
+    changeOrigin: true,
+    rewrite: (path) => path.replace(/^\/d2d/, ''),
+    ws: true,
+  },
+}
+```
+
+## Benefits
+
+### For Users
+✅ **Access from anywhere** - Don't need VPN or private network access
+✅ **Single sign-on** - Log into VRG Hub once
+✅ **Familiar interface** - Same VRG Hub UI/UX
+✅ **Mobile friendly** - Works on tablets and phones
+✅ **No training needed** - Same D2D interface they know
+
+### For IT
+✅ **Centralized access** - All through VRG Hub
+✅ **Better security** - D2D not exposed to internet
+✅ **Easier management** - One portal to maintain
+✅ **Audit logging** - Track usage through VRG Hub
+✅ **No firewall changes** - Uses existing VRG Hub access
+
+## Network Requirements
+
+**VRG Hub Server:**
+- Must be able to reach 10.200.1.8:8000
+- Same VNet or VPN/peering configured
+- Outbound connections to d2d-vm allowed
+
+**D2D VM:**
+- Running at 10.200.1.8:8000
+- Accessible from VRG Hub server IP
+- Connected to PACS (10.17.1.21:5000)
+- Connected to Worklist (10.17.1.21:5010)
+
+**Users:**
+- Access VRG Hub (public URL)
+- No direct network access to 10.200.1.8 needed
+- Standard browser (Chrome, Edge, Safari)
+
+## Production Deployment
+
+### Nginx (if VRG Hub uses nginx)
+
+Add to nginx config:
+
+```nginx
+location /d2d/ {
+    proxy_pass http://10.200.1.8:8000/;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection 'upgrade';
+    proxy_set_header Host $host;
+    proxy_cache_bypass $http_upgrade;
+}
+```
+
+### Apache (if VRG Hub uses Apache)
+
+```apache
+ProxyPass /d2d/ http://10.200.1.8:8000/
+ProxyPassReverse /d2d/ http://10.200.1.8:8000/
+```
+
+## Testing
+
+### 1. Development Test
+
+```bash
+cd /home/claudeagent/vrg-hub
+npm run dev
+# Navigate to: http://localhost:8080/d2d-converter
+```
+
+### 2. Verify Proxy
+
+```bash
+# From VRG Hub server
+curl http://10.200.1.8:8000
+# Should return D2D HTML
+```
+
+### 3. End-to-End Test
+
+1. Access VRG Hub
+2. Navigate to `/d2d-converter`
+3. D2D interface should load
+4. Test worklist query
+5. Upload and convert a document
+6. Verify PACS send works
+
+## Monitoring
+
+### Health Check
+
+```bash
+# Check D2D is accessible from VRG Hub
+curl -I http://10.200.1.8:8000
+```
+
+### Logs
+
+**VRG Hub:**
+- Browser console for client errors
+- Server logs for proxy issues
+
+**D2D:**
+```bash
+ssh azureuser@10.200.1.8
+cd /opt/d2d
+sudo docker-compose logs --tail 100
+```
+
+## Troubleshooting
+
+| Issue | Solution |
+|-------|----------|
+| D2D not loading | Check d2d-vm is running & accessible from VRG Hub server |
+| CORS errors | Verify `changeOrigin: true` in proxy config |
+| 404 on /d2d/ | Restart VRG Hub dev server or check nginx/Apache config |
+| Blank iframe | Check D2D container is running: `docker-compose ps` |
+
+## Next Steps
+
+1. **Deploy to Production**
+   - Update nginx/Apache config
+   - Test from production VRG Hub URL
+   - Verify all features work
+
+2. **Train Users**
+   - Show new D2D location in VRG Hub
+   - Same features, new access method
+   - Emphasize "works from anywhere"
+
+3. **Monitor Usage**
+   - Check VRG Hub access logs
+   - Monitor D2D container logs
+   - Track conversion success rates
+
+## Support
+
+**For D2D Integration Issues:**
+- Check `/home/claudeagent/vrg-hub/D2D-INTEGRATION.md`
+- Verify network connectivity to 10.200.1.8
+
+**For D2D Application Issues:**
+- Check `/home/claudeagent/d2d/WORKLIST-FEATURE.md`
+- Check `/home/claudeagent/d2d/VM-DEPLOYMENT-INFO.md`
+
+**For VRG Hub Issues:**
+- Standard VRG Hub support procedures
+
+---
+
+## Summary
+
+🎉 **D2D is now integrated with VRG Hub!**
+
+Users can access the full D2D functionality from anywhere through VRG Hub, without needing direct access to the private network.
+
+**Key URLs:**
+- VRG Hub D2D: `https://your-vrg-hub.com/d2d-converter`
+- Direct D2D: `http://10.200.1.8:8000` (private only)
+- GitHub (D2D): `https://github.com/chrisgermon/d2d`
+
+**Status:** ✅ Ready for deployment
+
+---
+
+**Document Created:** 2026-01-23
+**Last Updated:** 2026-01-23