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/Resources/metadata/entityDefs/Template.json

@@ -75,6 +75,9 @@
         "teams": {
             "type": "linkMultiple"
         },
+        "description": {
+            "type": "text"
+        },
         "createdAt": {
             "type": "datetime",
             "readOnly": true
@@ -120,6 +123,11 @@
         },
         "title": {
             "type": "varchar"
+        },
+        "filename": {
+            "type": "varchar",
+            "maxLength": 150,
+            "tooltip": true
         }
     },
     "links": {