Settings > About > Uninstall rendered nothing when the OS or a package
manager owns removal (MSIX, bundled, Nix). The summary IPC now adds the
canonical nativeRemovalInstructions text from the main process. The page
shows it, where user data lives, and on Windows an "Open Apps settings"
button backed by a fixed-URL IPC, because the generic openExternal bridge
admits web schemes only.
The uninstall strings move into en_uninstall_section.ts and
types_uninstall_section.ts, main's split i18n layout, which keeps en.ts and
types.ts under their line caps. main.ts offsets its two new lines by
deleting isActiveRuntimeUsable(), which nothing calls.