Opus advisor SHOULD-FIX: the tooltip rework dropped t('forked_from') in favor
of a hardcoded English string, a real i18n regression (the catalog key exists
in all locales). Restore the localized base while keeping the clearer
'<base>: <parent>' format. Adds a regression test.
The new lineage/child explanatory suffixes (additive English) and the
read-only title hint are deferred to a small follow-up — they need new locale
keys and the read-only state is still surfaced by the existing meta chip.
Co-authored-by: ai-ag2026 <ai-ag2026@users.noreply.github.com>
d6d74b5354
