fix: remove ollama proxy for standalone operation

nginx.conf

@@ -12,35 +12,10 @@ server {
         try_files $uri $uri/ /index.html;
     }
 
-    # Proxy Ollama API requests
-    # Uses dynamic resolution so container can start without Ollama available
-    location /api/ {
-        # Use Docker's internal DNS resolver with a short cache
-        resolver 127.0.0.11 valid=10s ipv6=off;
-        
-        # Use a variable to force runtime DNS resolution (not startup)
-        set $upstream_ollama http://ollama:11434;
-        proxy_pass $upstream_ollama/api/;
-        
-        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 $scheme;
-        
-        # CORS headers
-        add_header 'Access-Control-Allow-Origin' '*' always;
-        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
-        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
-        
-        if ($request_method = 'OPTIONS') {
-            add_header 'Access-Control-Max-Age' 1728000;
-            add_header 'Content-Type' 'text/plain; charset=utf-8';
-            add_header 'Content-Length' 0;
-            return 204;
-        }
-        
-        # Handle case where Ollama isn't available
-        proxy_connect_timeout 5s;
-        proxy_read_timeout 300s;
-    }
+    # NOTE: Ollama proxy is NOT included by default to allow standalone operation.
+    # The app works with Browser AI (WebLLM/Transformers.js) without any external services.
+    #
+    # If you need to proxy requests to Ollama, either:
+    # 1. Set the Ollama URL directly in the app settings (e.g., http://your-nas-ip:11434)
+    # 2. Or mount a custom nginx.conf with your proxy configuration
 }