Initial enable banking implementation (#382)

* Initial enable banking implementation

* Handle multiple connections

* Amount fixes

* Account type mapping

* Add option to skip accounts

* Update schema.rb

* Transaction fixes

* Provider fixes

* FIX account identifier

* FIX support unlinking

* UI style fixes

* FIX safe redirect and brakeman issue

* FIX

- pagination max fix
- wrap crud in transaction logic

* FIX api uid access

- The Enable Banking API expects the UUID (uid from the API response) to fetch balances/transactions, not the identification_hash

* FIX add new connection

* FIX erb code

* Alert/notice box overflow protection

* Give alert/notification boxes room to grow (3 lines max)

* Add "Enable Banking (beta)" to `/settings/bank_sync`

* Make Enable Banking section collapsible like all others

* Add callback hint to error message

---------

Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

app/models/enable_banking_account/processor.rb

@@ -0,0 +1,69 @@
+class EnableBankingAccount::Processor
+  include CurrencyNormalizable
+
+  attr_reader :enable_banking_account
+
+  def initialize(enable_banking_account)
+    @enable_banking_account = enable_banking_account
+  end
+
+  def process
+    unless enable_banking_account.current_account.present?
+      Rails.logger.info "EnableBankingAccount::Processor - No linked account for enable_banking_account #{enable_banking_account.id}, skipping processing"
+      return
+    end
+
+    Rails.logger.info "EnableBankingAccount::Processor - Processing enable_banking_account #{enable_banking_account.id} (uid #{enable_banking_account.uid})"
+
+    begin
+      process_account!
+    rescue StandardError => e
+      Rails.logger.error "EnableBankingAccount::Processor - Failed to process account #{enable_banking_account.id}: #{e.message}"
+      Rails.logger.error "Backtrace: #{e.backtrace.join("\n")}"
+      report_exception(e, "account")
+      raise
+    end
+
+    process_transactions
+  end
+
+  private
+
+    def process_account!
+      if enable_banking_account.current_account.blank?
+        Rails.logger.error("Enable Banking account #{enable_banking_account.id} has no associated Account")
+        return
+      end
+
+      account = enable_banking_account.current_account
+      balance = enable_banking_account.current_balance || 0
+
+      # For liability accounts, ensure positive balances
+      if account.accountable_type == "CreditCard" || account.accountable_type == "Loan"
+        balance = -balance
+      end
+
+      currency = parse_currency(enable_banking_account.currency) || account.currency || "EUR"
+
+      account.update!(
+        balance: balance,
+        cash_balance: balance,
+        currency: currency
+      )
+    end
+
+    def process_transactions
+      EnableBankingAccount::Transactions::Processor.new(enable_banking_account).process
+    rescue => e
+      report_exception(e, "transactions")
+    end
+
+    def report_exception(error, context)
+      Sentry.capture_exception(error) do |scope|
+        scope.set_tags(
+          enable_banking_account_id: enable_banking_account.id,
+          context: context
+        )
+      end
+    end
+end