Each wrapper built a fresh closure every render, so `t` in a dependency array
recomputed forever. That is the documented useClient()/Jellyfin trap in
platform/CLAUDE.md, and phase 2 needs t in useMemo deps immediately.
useTranslation in officer-web now also returns tUi, typed against the shared
components' catalog. 'Cancel' and 'Close' recur across the shell and already exist
in ui.* — the alternative was importing two hooks in a hundred files.
ColorPicker's one string was placeholder="Font Weight" on an <input type="color">,
where a placeholder is both wrong text and inert — browsers do not render one on a
colour input. Keyed it as ui.colorPicker.placeholder and moved it to the hex text
field beside it, which is a real text input and had none. Translating it in place
would have created a key guaranteed never to be seen.
Both files still have no importers; CommandBlock stays because commands the user
might run need a copy button by convention.
Establishes the ui.* namespace for phases 2 and 3. Both catalogs complete, so the
key-parity test holds. Two English copy defects fixed while keying, because the
Portuguese must not inherit them: 'Your are not authorized' -> 'You are', and
'Please Signin again' -> 'Please sign in again'.
The server's own message in ServerError/CustomError stays verbatim — it is a
response, not UI copy (D1).