Derive application and default terminal titles from the current locale while preserving renamed and unmarked legacy terminal titles. Add locale-switch and layout-restoration regression coverage.
File-level scope also includes existing browser popup selection and close handling in the sidebar, its regression test, and workbar documentation updates.
Validation: 74 focused tests passed; typecheck and lint passed. Full test runs timed out with failures in settings navigation, Agent packaging, and database migration tests. Electron verification remains outstanding.
Release note: Workbar application and new default terminal titles now follow the interface language, including after restoring a layout; custom and legacy terminal names are preserved.