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/i18n/cs_CZ/Calendar.json

@@ -1,13 +1,23 @@
-{
-  "modes": {
-    "month": "Měsíc",
-    "week": "Týden",
-    "agendaWeek": "Týden",
-    "day": "Den",
-    "agendaDay": "Den"
-  },
-  "labels": {
-    "Today": "Dnes",
-    "Create": "Vytvořit"
-  }
+{
+  "modes": {
+    "month": "Měsíc",
+    "week": "Týden",
+    "agendaWeek": "Týden",
+    "day": "Den",
+    "agendaDay": "Den",
+    "timeline": "Časová osa"
+  },
+  "labels": {
+    "Today": "Dnes",
+    "Create": "Vytvořit",
+    "Shared": "Sdílené",
+    "Add User": "Přidat uživatele",
+    "current": "aktuální",
+    "time": "čas",
+    "User List": "Seznam uživatelů",
+    "View Calendar": "Zobrazit kalendář",
+    "Create Shared View": "Vytvořit sdílené zobrazení",
+    "Edit Shared View": "Upravit sdílené zobrazení",
+    "Shared Mode Options": "Možnosti sdíleného režimu"
+  }
 }