currencies in client never drifts from the server from now on

common/src/proto/komp_ac.table_definition.rs

@@ -734,6 +734,10 @@ pub struct ListColumnTypesResponse {
     /// Every column type, declarable or not, ordered by name.
     #[prost(message, repeated, tag = "1")]
     pub column_types: ::prost::alloc::vec::Vec<list_column_types_response::ColumnType>,
+    /// Every canonical ISO-4217 code accepted by currency-bearing columns and
+    /// profile accounting settings, ordered alphabetically.
+    #[prost(string, repeated, tag = "2")]
+    pub currency_codes: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
 }
 /// Nested message and enum types in `ListColumnTypesResponse`.
 pub mod list_column_types_response {