feat: implement offline queue, background sync and AI robustness

src/types/whisky.ts

@@ -9,6 +9,8 @@ export const BottleMetadataSchema = z.object({
     vintage: z.string().nullable(),
     bottleCode: z.string().nullable(),
     whiskybaseId: z.string().nullable(),
+    is_whisky: z.boolean().default(true),
+    confidence: z.number().min(0).max(100).default(100),
 });
 
 export type BottleMetadata = z.infer<typeof BottleMetadataSchema>;