Three settings-surface additions:
- Hide amounts: a toggle (same switch widget as the incoming-requests
toggle) under the amount-privacy rows, persisted in the app config
(serde-default off so old configs load). When on, the received-payment
notification masks the numeric grin with dots.
- Language: a picker under Appearance beside the theme row. Lists the six
shipped locales in their own names; tapping one switches and persists the
active locale.
- Update available: a badge pinned to the right of the settings profile
panel, shown only when the release check has found a newer build (reuses
the existing AppConfig::app_update state); tapping it opens the release
download page.
New user-facing strings added to all six locales.
2ro
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