Brings the video modal to parity with music's:
- 'Process first everywhere' control (Movies/Shows/Auto) in the topbar — a global
setting that pins which kind every worker processes first. enrichment_next takes
a priority kind; the worker reads enrichment_priority each loop; GET/POST
/api/video/enrichment/priority persists it. Reuses music's .em-global styling.
- Needs-matching bar now has a live count, status filter (All unmatched / Not
found / Pending) and a debounced search (reusing .em-select / .em-search),
matching the music modal. Episode view stays read-only.
- Live glow (scoped to #vem-overlay): pulsing running dot, accent glow on the
selected worker row + active process-first/kind, and a pulsing 'now processing'
chip in the worker accent. Music's shared .em-* styles untouched.
Seam tests: priority pins kind in enrichment_next + worker honors the setting,
priority endpoint GET/POST + validation, modal feature markup pinned.
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