chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Modules/Crm/Resources/metadata/clientDefs/Account.json

@@ -78,6 +78,9 @@
             "rowActionsView": "crm:views/record/row-actions/relationship-target",
             "layout": "listForTarget",
             "view": "crm:views/record/panels/target-lists"
+        },
+        "cases": {
+            "layout": "listForAccount"
         }
     },
     "filterList": [