* feat(frontend): refresh dashboard, orchestrator, and AO logos
Replaces the dashboard and orchestrator glyphs and the AO brand logo
per issue #315.
- Dashboard buttons (sidebar action + Open Kanban) now use the
asymmetric LayoutDashboard icon instead of the equal-cell LayoutGrid.
- Orchestrator buttons (sidebar action + every topbar badge/button) use
a new org-chart OrchestratorIcon (parent fanning to three children),
authored in lucide's stroke style since lucide has no matching glyph.
- The AO brand logo (sidebar header mark, landing nav, docs header) is
now the pixel-mascot image; the old ao-logo.svg monogram is removed.
Closes#315
* chore: format with prettier [skip ci]
* fix(landing): use next/image and next/link for the AO logo and docs link
Addresses react-doctor review on #317: the Next.js landing app should use
next/image for the brand logo (optimized formats, responsive srcset, lazy
loading) and next/link for the internal /docs navigation (client-side
routing + prefetch) instead of plain <img>/<a>.
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