fix sidebar menu redirect in production

apps/dashboard/src/components/layout/DashboardAccessGuard.boundary.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import { resolveDashboardRoutePolicy, roleCanAccessPolicy } from '@/lib/dashboardRoutePolicies'
-import { flattenInternalRoutes, getBaselineInternalRoutes, isAllowedRoute, resolveAccessRedirect, resolveAllowedRoutes } from './DashboardAccessGuard'
+import { buildSignInRedirect, flattenInternalRoutes, getBaselineInternalRoutes, isAllowedRoute, resolveAccessRedirect, resolveAllowedRoutes } from './DashboardAccessGuard'
 
 describe('DashboardAccessGuard route helpers', () => {
   it('normalizes dashboard-prefixed menu routes before checking access', () => {
@@ -108,6 +108,11 @@ describe('DashboardAccessGuard route helpers', () => {
     expect(resolveAccessRedirect('/fleet/123', ['/', '/fleet'])).toBeNull()
   })
 
+  it('builds sign-in redirects with public dashboard return paths', () => {
+    expect(buildSignInRedirect('/reservations')).toBe('/sign-in?redirect=%2Fdashboard%2Freservations')
+    expect(buildSignInRedirect('/dashboard/fleet')).toBe('/sign-in?redirect=%2Fdashboard%2Ffleet')
+  })
+
   it('treats subscription as an owner-only recovery route independent of menu registration', () => {
     const policy = resolveDashboardRoutePolicy('/subscription')