Your idea — use the empty space when a show is expanded. Expanding an orb now
lazily loads the show detail and lays out an info bar: the show SYNOPSIS on the
left, a row of CAST bubbles on the right (circular photos / initials fallback,
clickable -> opens the person page). This surfaces reliable show-level context
even for reality shows whose episodes have no TMDB overview (e.g. Love Island).
Reuses the existing detail endpoints (owned -> /detail/show, else /tmdb/show);
one fetch per show, cached on the group. All scoped under .vwsh-nebula — music
wishlist untouched.
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