L1DraftsPage is a Phase 1 placeholder (AI drafts arrive in Phase 2).
L1TicketsPage replaces the stub with a status-filterable internal-tickets
queue. L1CoverageBanner renders inside L1RouteGuard so every /l1/* page
shows it for engineer-coverers (hidden for native L1). SeatCounterWidget
+ /api/seats.ts surface engineer + L1 seat usage from the /accounts/me/
seats endpoint (T9).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
L1RouteGuard wraps the new routes and redirects users without
canUseL1Surface back to /. Page components are stubs in this task
(real UI in T21-T24): L1Dashboard, L1WalkPage, L1DraftsPage,
L1TicketsPage.
Routes: /l1, /l1/walk/:sessionId, /l1/drafts, /l1/tickets — all gated.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
