feat: extend journal code size to 15 and add automated fallback generation for system-created journals

models/account_journal.py

@@ -3,11 +3,21 @@ from odoo import fields, models
 class AccountJournal(models.Model):
     _inherit = "account.journal"
 
-    code = fields.Char(
-        string="Short Code",
-        size=15,  # ubah dari 5 → 15
-        compute="_compute_code", readonly=False, store=True,
-        required=True, precompute=True,
-        help="Shorter name used for display. "
-             "The journal entries of this journal will also be named using this prefix by default."
-    )
+    code = fields.Char(string="Short Code", size=15)
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            # Safety fallback for journals created without code/type (e.g. system-generated like Tax Return)
+            if not vals.get('code') and not vals.get('type'):
+                name = vals.get('name', '')
+                if isinstance(name, dict):
+                    name = name.get('en_US', '') or name.get('id_ID', '') or str(name)
+                
+                if 'Tax Return' in str(name):
+                    vals['type'] = 'general'
+                    vals['code'] = 'TAX'
+                else:
+                    # Generic fallback to avoid DB constraint crash for other automated journals
+                    vals['code'] = 'TEMP'
+        return super().create(vals_list)