Screens: article localization

One story, several language versions. Proposed feature: every API change is labelled as proposed. 1440 px at 50%, 390 px at 75%. The theme switch shows every state in dark mode. Imported localization reference. Product and API corrections are in docs/design/localization.md. Rendered parity and prototype flows remain unverified.

{{ g.title }}

{{ g.route }}{{ g.api }}

{{ g.note }}

{{ st.name }}{{ st.trigger }}

{{ t.title }}

{{ c }}
{{ c }}