* Add Galician (gl) localization for desktop client
* [client] Address review feedback and sync latest i18n keys for Galician
Fix terms per review feedback (usarase, creen, auditar, JWT cache, poscuántico, etc.) and translate newly added upstream i18n keys.
* [client] Fix translations, polish terminology, and sync latest keys for Galician
* [client] Fix i18n parity against branch source of truth and drop undeclared uk
* [ci] Skip Galician locales in codespell check
* [client] Add latest error keys for Galician and revert _index.json formatting
Add error.settings_locked and error.settings_managed_by_mdm to Galician locale for 100% key parity with en/common.json. Revert multi-line formatting in _index.json to keep a single-line entry for Galician.