feat: add bottle editing and purchase price tracking

src/components/BottleGrid.tsx

@@ -15,6 +15,7 @@ interface Bottle {
     abv: number;
     age: number;
     image_url: string;
+    purchase_price?: number | null;
     status: 'sealed' | 'open' | 'sampled' | 'empty';
     created_at: string;
     last_tasted?: string | null;