Make direct use of mic codes

app/models/account/trade_builder.rb

@@ -31,12 +31,10 @@ class Account::TradeBuilder < Account::EntryBuilder
     end
 
     def security
-      exchange_acronym = ticker.match(/\((.*?)\)/)&.captures&.first
+      exchange_mic = ticker.match(/\((.*?)\)/)&.captures&.first
       ticker_symbol = ticker.gsub(/\s*\(.*?\)\s*/, "")
 
-      exchange = StockExchange.find_by(acronym: exchange_acronym)
-
-      Security.find_or_create_by(ticker: ticker_symbol, exchange_mic: exchange.mic)
+      Security.find_or_create_by(ticker: ticker_symbol, exchange_mic: exchange_mic)
     end
 
     def amount

app/models/provider/synth.rb

@@ -136,7 +136,8 @@ class Provider::Synth
         symbol: security.dig("symbol"),
         name: security.dig("name"),
         logo_url: security.dig("logo_url"),
-        exchange_acronym: security.dig("exchange", "acronym")
+        exchange_acronym: security.dig("exchange", "acronym"),
+        exchange_mic: security.dig("exchange", "mic")
       }
     end
 

app/models/security/synth_combobox_option.rb

@@ -1,19 +1,17 @@
 class Security::SynthComboboxOption
   include ActiveModel::Model
+  include Providable
 
-  attr_accessor :symbol, :name, :logo_url, :exchange_acronym
+  attr_accessor :symbol, :name, :logo_url, :exchange_acronym, :exchange_mic
 
   class << self
     def find_in_synth(query)
-      Provider::Synth.new(ENV["SYNTH_API_KEY"])
-        .search_securities(query:, dataset: "limited", country_code: Current.family.country)
-        .securities
-        .map { |attrs| new(**attrs) }
+      security_prices_provider.search_securities(query:, dataset: "limited", country_code: Current.family.country).securities.map { |attrs| new(**attrs) }
     end
   end
 
   def id
-    "#{symbol} (#{exchange_acronym})" # submitted by combobox as value
+    "#{symbol} (#{exchange_mic})" # submitted by combobox as value
   end
 
   def to_combobox_display