```

chore: remove obsolete payment architecture and integration test documentation

- Remove AITBC_PAYMENT_ARCHITECTURE.md (dual-currency system documentation)
- Remove IMPLEMENTATION_COMPLETE_SUMMARY.md (integration test completion summary)
- Remove INTEGRATION_TEST_FIXES.md (test fixes documentation)
- Remove INTEGRATION_TEST_UPDATES.md (real features implementation notes)
- Remove PAYMENT_INTEGRATION_COMPLETE.md (wallet-coordinator integration docs)
- Remove WALLET_COORDINATOR_INTEGRATION.md (payment

apps/blockchain-explorer/nginx.conf

@@ -0,0 +1,31 @@
+server {
+    listen 3000;
+    server_name _;
+    root /opt/blockchain-explorer;
+    index index.html;
+    
+    # API proxy - standardize endpoints
+    location /api/v1/ {
+        proxy_pass http://localhost:8082/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 $scheme;
+    }
+    
+    # Legacy API compatibility
+    location /rpc {
+        return 307 /api/v1$uri?$args;
+    }
+    
+    # Static files
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+    
+    # SPA fallback
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}