docs: Add nginx configuration dan fix 404 routing issue

nginx.conf.example

@@ -0,0 +1,63 @@
+# Nginx Configuration untuk Slim Framework 4
+# Copy ke: /www/server/panel/vhost/nginx/api.btekno.cloud.conf
+# Atau setup via aaPanel: Website -> api.btekno.cloud -> Settings -> Configuration
+
+server {
+    listen 80;
+    listen 443 ssl http2;
+    server_name api.btekno.cloud;
+    
+    # SSL Configuration (setup via aaPanel)
+    # ssl_certificate /path/to/cert;
+    # ssl_certificate_key /path/to/key;
+    
+    # Document Root - PENTING: harus ke folder public/
+    root /www/wwwroot/api.btekno.cloud/api/public;
+    index index.php index.html;
+    
+    # Logs
+    access_log /www/wwwlogs/api.btekno.cloud.log;
+    error_log /www/wwwlogs/api.btekno.cloud.error.log;
+    
+    # Disable access to hidden files
+    location ~ /\. {
+        deny all;
+        access_log off;
+        log_not_found off;
+    }
+    
+    # Main location block
+    location / {
+        try_files $uri $uri/ /index.php?$query_string;
+    }
+    
+    # PHP-FPM configuration
+    location ~ \.php$ {
+        try_files $uri =404;
+        fastcgi_split_path_info ^(.+\.php)(/.+)$;
+        fastcgi_pass unix:/tmp/php-cgi-83.sock;  # Sesuaikan dengan PHP version
+        fastcgi_index index.php;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        include fastcgi_params;
+        
+        # Disable buffering for SSE
+        fastcgi_buffering off;
+    }
+    
+    # Disable PHP execution in uploads
+    location ~* /uploads/.*\.php$ {
+        deny all;
+    }
+    
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    
+    # Gzip compression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_types text/plain text/css text/xml text/javascript application/json application/javascript application/xml+rss;
+}
+