#366 (brand text overlapped by the fixed macOS TitlebarNav cluster on
board routes) is already fixed on main: #263 made the shell render the
topbar on every route, so the sidebar always hangs below the 56px
titlebar band and the brand never lands in the cluster's lane.
Add an e2e regression guard that locks the invariant in for the routes
the issue named — the brand must not overlap the fixed cluster and the
"Agent Orchestrator" wordmark must stay readable (not truncated) — on the
home board route and the project board route, plus across a board→session
transition (the persistent brand must not jump). Drives the live renderer
under a forced macOS UA. If a topbar-less route is ever reintroduced,
these fail.
Verified: passes against current main with no source changes;
typecheck clean.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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