Visual-only mic button for the top strip per
docs/specs/2026-04-11-nexus-layout-overhaul.md §4.2. Renders three
specified states (idle / listening / speaking) but Phase 8 only
wires the idle state functionally. Phase 14 will toggle the state
prop from the voice pipeline without changing this component's
signature.
Uses text-primary/bg-primary for volt (already migrated in phases
1-3) and literal #166534 / #a0a0a0 for forest and silver, which
MIGRATION-PLAN.md §3 proposes as new semantic tokens that have not
yet shipped.
Part of Phase 8 of the Nexus layout overhaul (task 4 of 7).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
