Initial commit: Dispensa - home pantry management app

Features:
- Barcode scanning (QuaggaJS) + Open Food Facts API lookup
- Inventory management with locations (Frigo, Freezer, Dispensa)
- Product database with Italian product suggestions
- Expiry date estimation by category
- AI expiry date reading via Gemini Vision API
- Flexible unit of measure (pz, conf, g, kg, ml, L)
- Nutriscore/NOVA/Ecoscore/allergens display
- Mobile-first PWA with offline support
- SQLite backend with PHP REST API

.htaccess

@@ -0,0 +1,11 @@
+RewriteEngine On
+
+# Force HTTPS
+RewriteCond %{HTTPS} !=on
+RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
+
+# API routing
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+RewriteRule ^api/(.*)$ api/index.php?action=$1&%{QUERY_STRING} [L,QSA]
+AddType application/x-x509-ca-cert .crt