```

chore: refactor logging module, update genesis timestamp, remove model relationships, and reorganize routers

- Rename logging.py to logger.py and update import paths in poa.py and main.py
- Update devnet genesis timestamp to 1766828620
- Remove SQLModel Relationship declarations from Block, Transaction, and Receipt models
- Add SessionDep type alias and get_session dependency in coordinator-api deps
- Reorganize coordinator-api routers: replace explorer/registry with exchange, users, marketplace

nginx-domain-setup.md

@@ -0,0 +1,143 @@
+# Nginx Domain Setup for AITBC
+
+## Problem
+The admin endpoint at `https://aitbc.bubuit.net/admin` returns 404 because nginx isn't properly routing to the backend services.
+
+## Solution
+
+### 1. Make sure services are running in the container
+
+```bash
+# Access the container
+incus exec aitbc -- bash
+
+# Inside container, start services
+cd /home/oib/aitbc
+./start_aitbc.sh
+
+# Check if running
+ps aux | grep uvicorn
+```
+
+### 2. Update nginx configuration in container
+
+The nginx config needs to be inside the container at `/etc/nginx/sites-available/aitbc`:
+
+```nginx
+server {
+    listen 80;
+    server_name aitbc.bubuit.net;
+    return 301 https://$server_name$request_uri;
+}
+
+server {
+    listen 443 ssl http2;
+    server_name aitbc.bubuit.net;
+    
+    # SSL certs (already configured)
+    ssl_certificate /etc/letsencrypt/live/aitbc.bubuit.net/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/aitbc.bubuit.net/privkey.pem;
+    
+    # API routes - MUST include /v1
+    location /api/ {
+        proxy_pass http://127.0.0.1:8000/v1/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Admin routes
+    location /admin/ {
+        proxy_pass http://127.0.0.1:8000/admin/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Blockchain RPC
+    location /rpc/ {
+        proxy_pass http://127.0.0.1:9080/rpc/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Marketplace UI
+    location /Marketplace {
+        proxy_pass http://127.0.0.1:3001/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Trade Exchange
+    location /Exchange {
+        proxy_pass http://127.0.0.1:3002/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+    
+    # Health endpoint
+    location /health {
+        proxy_pass http://127.0.0.1:8000/v1/health;
+        proxy_set_header Host $host;
+    }
+    
+    # Default redirect
+    location / {
+        return 301 /Marketplace;
+    }
+}
+```
+
+### 3. Apply the configuration
+
+```bash
+# Copy config to container
+incus file push nginx-aitbc.conf aitbc/etc/nginx/sites-available/aitbc
+
+# Enable site
+incus exec aitbc -- ln -sf /etc/nginx/sites-available/aitbc /etc/nginx/sites-enabled/
+
+# Test config
+incus exec aitbc -- nginx -t
+
+# Reload nginx
+incus exec aitbc -- systemctl reload nginx
+```
+
+### 4. Verify services are running
+
+```bash
+# Check each service
+curl -k https://aitbc.bubuit.net/api/health
+curl -k https://aitbc.bubuit.net/admin/stats -H "X-Api-Key: admin_dev_key_1"
+curl -k https://aitbc.bubuit.net/rpc/head
+```
+
+## Quick Fix
+
+If you need immediate access, you can access the API directly:
+
+- **API**: https://aitbc.bubuit.net/api/health
+- **Admin**: https://aitbc.bubuit.net/admin/stats (with API key)
+- **Marketplace**: https://aitbc.bubuit.net/Marketplace
+- **Exchange**: https://aitbc.bubuit.net/Exchange
+
+The issue is likely that:
+1. Services aren't running in the container
+2. Nginx config isn't properly routing /admin to the backend
+3. Port forwarding isn't configured correctly
+
+## Debug Steps
+
+1. Check container services: `incus exec aitbc -- ps aux | grep uvicorn`
+2. Check nginx logs: `incus exec aitbc -- journalctl -u nginx -f`
+3. Check nginx config: `incus exec aitbc -- nginx -T`
+4. Test backend directly: `incus exec aitbc -- curl http://127.0.0.1:8000/v1/health`