fix: track Filament vendor translation files in git

The vendor/ entry in .gitignore was blocking lang/vendor/filament/
from being tracked. Added !lang/vendor/ exception and committed all
21 language translation files (login.php + resources.php) so the
other VPS can pull them via git.

.gitignore

@@ -7,6 +7,7 @@
 # --- Dependencies ---
 node_modules/
 vendor/
+!lang/vendor/
 
 # --- Build artifacts (hashed filenames) ---
 public/build/assets/