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/clientDefs/CurrencyRecordRate.json

@@ -0,0 +1,6 @@
+{
+    "controller": "controllers/record",
+    "modelDefaultsPreparator": "handlers/currency-record-rate/default-preparator",
+    "acl": "acl/currency-record-rate",
+    "textFilterDisabled": true
+}