fix: Improve nginx configuration for React SPA routing

- Change server_name to '_' (catch-all for any domain)
- Move /static/ location before / to ensure static assets are matched first
- Move root fallback to last location block (must be last for proper priority)
- Change proxy_pass from 'localhost' to '127.0.0.1' for better container networking
- Add index.htm to index directive

These changes ensure:
1. Static assets are served with proper caching before catching with /index.html
2. Root fallback correctly handles React client-side routing
3. Proper nginx location block precedence

🤖 Generated with Claude Code

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

dashboard-sqdc/nginx.conf

@@ -1,8 +1,8 @@
 server {
     listen 80;
-    server_name localhost;
+    server_name _;
     root /usr/share/nginx/html;
-    index index.html;
+    index index.html index.htm;
 
     # Gzip compression
     gzip on;
@@ -12,7 +12,7 @@ server {
 
     # API proxy
     location /api/ {
-        proxy_pass http://localhost:3001/;
+        proxy_pass http://127.0.0.1:3001/;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';
@@ -23,7 +23,13 @@ server {
         proxy_set_header X-Forwarded-Proto $scheme;
     }
 
-    # React app - handle client-side routing
+    # Static assets with caching
+    location /static/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # React app - handle client-side routing (must be last)
     location / {
         try_files $uri $uri/ /index.html;
         add_header Cache-Control "no-cache, no-store, must-revalidate";
@@ -31,12 +37,6 @@ server {
         add_header Expires "0";
     }
 
-    # Static assets with caching
-    location /static/ {
-        expires 1y;
-        add_header Cache-Control "public, immutable";
-    }
-
     # Security headers
     add_header X-Frame-Options "SAMEORIGIN" always;
     add_header X-Content-Type-Options "nosniff" always;