Follow-up polish to the kanban dashboard from #19864 and #19705.
**Home-channel toggle contrast.** The `.hermes-kanban-home-sub--on`
class previously used `color-mix(var(--color-ring) 14%, transparent)`
which was nearly invisible on both the default teal and NERV themes —
the on/off distinction relied almost entirely on the ✓ prefix glyph.
Bump to 32% fill + full-opacity ring border + inner ring shadow +
font-weight 600. Still theme-scoped (no hardcoded colors), but reads
at a glance on both tested themes.
**Drop the → running status action.** Since #19705, `PATCH /tasks/:id`
rejects `status=running` with HTTP 400 — only the dispatcher's
`claim_task` path legitimately enters that state (so the run row,
claim lock, and worker PID are created atomically). The UI button was
still present and produced a 400 on click, which is a confusing dead
affordance. Remove it from `StatusActions`; add a comment pointing to
#19535 so future editors know why it's missing.
Live-tested on the default Hermes Teal theme. 53/53 kanban dashboard
plugin tests still pass.
56a78e74b2