Fix build errors: localization syntax, key paths, and ViewOrderCard widget

backend/dataconnect/schema/order.gql

@@ -22,7 +22,7 @@ enum OrderDuration {
 }
 
 #events
-type Order @table(name: "orders") {
+type Order @table(name: "orders", key: ["id"]) {
   id: UUID! @default(expr: "uuidV4()")
   eventName: String
 

backend/dataconnect/schema/shift.gql

@@ -10,7 +10,7 @@ enum ShiftStatus {
   CANCELED
 }
 
-type Shift @table(name: "shifts") {
+type Shift @table(name: "shifts", key: ["id"]) {
   id: UUID! @default(expr: "uuidV4()")
 
   title: String!