feat: merge stores, fix auto navigation, split summary

components/HotelReservation/EnterDetails/Details/schema.ts

@@ -38,7 +38,7 @@ export const joinDetailsSchema = baseDetailsSchema.merge(
     join: z.literal<boolean>(true),
     zipCode: z.string().min(1, { message: "Zip code is required" }),
     dateOfBirth: z.string().min(1, { message: "Date of birth is required" }),
-    membershipNo: z.string().optional(),
+    membershipNo: z.string().default(""),
   })
 )
 
@@ -50,13 +50,16 @@ export const guestDetailsSchema = z.discriminatedUnion("join", [
 // For signed in users we accept partial or invalid data. Users cannot
 // change their info in this flow, so we don't want to validate it.
 export const signedInDetailsSchema = z.object({
-  countryCode: z.string().optional(),
-  email: z.string().optional(),
-  firstName: z.string().optional(),
-  lastName: z.string().optional(),
-  phoneNumber: z.string().optional(),
+  countryCode: z.string().default(""),
+  email: z.string().default(""),
+  firstName: z.string().default(""),
+  lastName: z.string().default(""),
+  membershipNo: z.string().default(""),
+  phoneNumber: z.string().default(""),
   join: z
     .boolean()
     .optional()
     .transform((_) => false),
+  dateOfBirth: z.string().default(""),
+  zipCode: z.string().default(""),
 })