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/i18n/cs_CZ/ImportError.json

@@ -1 +1,23 @@
-{}
+{
+  "fields": {
+    "type": "Typ",
+    "validationFailures": "Selhání validace",
+    "rowIndex": "Index řádku",
+    "exportRowIndex": "Index řádku exportu",
+    "lineNumber": "Číslo řádku",
+    "exportLineNumber": "Číslo řádku exportu",
+    "row": "Řádek",
+    "entityType": "Typ entity"
+  },
+  "options": {
+    "type": {
+      "Validation": "Validace",
+      "Access": "Přístup",
+      "Not-Found": "Nenalezeno"
+    }
+  },
+  "tooltips": {
+    "lineNumber": "Číslo řádku v původním CSV.",
+    "exportLineNumber": "Číslo řádku v exportovaném CSV."
+  }
+}