refactor(kapital-bank): drop redundant Default Company field

System is single-company; Default Company on Kapital Bank Settings
duplicated what ERPNext already exposes via Global Defaults. Removed
the field and replaced all settings/doc.default_company reads with
erpnext.get_default_company() (used by Bank Account creation for
accounts/cards, Journal Entry / Payment Entry / Bank Transaction
creation during reconcile). Existing column on the singleton table is
left in place — Frappe just ignores it.

kapital_bank/bank_api.py

@@ -1,5 +1,6 @@
 import json
 import re
+import erpnext
 import frappe
 from datetime import datetime
 from frappe.utils import cint, flt
@@ -931,13 +932,13 @@ def create_unmapped_accounts(settings_name=None):
 			return {"success": True, "created_count": 0, "message": "No unmapped accounts to create"}
 
 		default_bank = doc.default_bank
-		default_company = doc.default_company
+		default_company = erpnext.get_default_company()
 
 		# Bank Account requires both Company and Bank — surface a clear message
 		# instead of ERPNext's mandatory-field error mid-creation.
 		if any(not frappe.db.exists("Bank Account", {"bank_account_no": r.iban}) for r in unmapped):
 			if not default_company:
-				return {"success": False, "message": "Set a Default Company on Kapital Bank Settings before creating Bank Accounts."}
+				return {"success": False, "message": "Set a Default Company in Global Defaults before creating Bank Accounts."}
 			if not default_bank:
 				return {"success": False, "message": "Set a Default Bank on Kapital Bank Settings before creating Bank Accounts."}
 
@@ -1058,11 +1059,11 @@ def create_unmapped_cards(settings_name=None):
 			return {"success": True, "created_count": 0, "message": "No unmapped cards to create"}
 
 		default_bank = doc.default_bank
-		default_company = doc.default_company
+		default_company = erpnext.get_default_company()
 
 		if any(not frappe.db.exists("Bank Account", {"bank_account_no": r.account_number}) for r in unmapped):
 			if not default_company:
-				return {"success": False, "message": "Set a Default Company on Kapital Bank Settings before creating Bank Accounts."}
+				return {"success": False, "message": "Set a Default Company in Global Defaults before creating Bank Accounts."}
 			if not default_bank:
 				return {"success": False, "message": "Set a Default Bank on Kapital Bank Settings before creating Bank Accounts."}
 
@@ -1750,14 +1751,13 @@ def _import_one_transaction(txn_data, settings, purpose_rules, purpose_threshold
         }
 
     if doc_type == "Journal Entry":
-        import erpnext
         from erpnext.setup.utils import get_exchange_rate
 
         # Create Journal Entry
         je = frappe.new_doc("Journal Entry")
         je.voucher_type = "Bank Entry"
         je.posting_date = parsed_date
-        je.company = settings.default_company
+        je.company = erpnext.get_default_company()
         je.cheque_no = ref_no
         je.cheque_date = parsed_date
         je.user_remark = purpose
@@ -1765,7 +1765,7 @@ def _import_one_transaction(txn_data, settings, purpose_rules, purpose_threshold
 
         # Compute per-account amounts with proper multi-currency handling
         currency_precision = cint(frappe.db.get_single_value("System Settings", "currency_precision") or 2)
-        company_currency = erpnext.get_company_currency(settings.default_company)
+        company_currency = erpnext.get_company_currency(erpnext.get_default_company())
         txn_currency = (txn_data.get("currency") or company_currency).strip()
 
         pf_account = frappe.get_cached_value("Account", paid_from, ["account_type", "account_currency"], as_dict=True) or {}
@@ -1871,7 +1871,7 @@ def _import_one_transaction(txn_data, settings, purpose_rules, purpose_threshold
     # Create Payment Entry
     pe = frappe.new_doc("Payment Entry")
     pe.payment_type = payment_type
-    pe.company = settings.default_company
+    pe.company = erpnext.get_default_company()
     pe.posting_date = parsed_date
     pe.paid_from = paid_from
     pe.paid_to = paid_to
@@ -2302,7 +2302,7 @@ def _import_one_bank_transaction(txn_data, settings, voen_to_party, name_to_part
     bt.description = txn_data.get("full_description") or purpose
     bt.reference_number = ref_no
     bt.transaction_id = ref_no
-    bt.company = settings.default_company
+    bt.company = erpnext.get_default_company()
     bt.bank_party_name = contr_name or purpose
 
     bt.bank_account = bank_account

kapital_bank/kapital_bank/doctype/kapital_bank_settings/kapital_bank_settings.json

@@ -7,7 +7,6 @@
   "settings_tab",
   "is_active",
   "default_login",
-  "default_company",
   "company_code",
   "default_bank",
   "general_section",
@@ -70,12 +69,6 @@
    "label": "Default Login",
    "options": "Kapital Bank Login"
   },
-  {
-   "fieldname": "default_company",
-   "fieldtype": "Link",
-   "label": "Default Company",
-   "options": "Company"
-  },
   {
    "fieldname": "company_code",
    "fieldtype": "Data",