docs: Add nginx configuration dan fix 404 routing issue

.htaccess

@@ -0,0 +1,41 @@
+# Apache .htaccess untuk Slim Framework 4
+# Jika menggunakan Apache (bukan nginx)
+
+<IfModule mod_rewrite.c>
+    RewriteEngine On
+    
+    # Redirect to HTTPS (optional)
+    # RewriteCond %{HTTPS} off
+    # RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
+    
+    # Handle Authorization Header
+    RewriteCond %{HTTP:Authorization} .
+    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+    
+    # Redirect Trailing Slashes
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteCond %{REQUEST_URI} (.+)/$
+    RewriteRule ^ %1 [L,R=301]
+    
+    # Send Requests To Front Controller
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteCond %{REQUEST_FILENAME} !-f
+    RewriteRule ^ index.php [L]
+</IfModule>
+
+# Security
+<IfModule mod_headers.c>
+    Header set X-Frame-Options "SAMEORIGIN"
+    Header set X-Content-Type-Options "nosniff"
+    Header set X-XSS-Protection "1; mode=block"
+</IfModule>
+
+# Disable directory browsing
+Options -Indexes
+
+# Protect .env file
+<FilesMatch "^\.env">
+    Order allow,deny
+    Deny from all
+</FilesMatch>
+