feat(dashboard): add onboarding gate forcing company setup before app use

After login/activation, show a full-screen loader while company settings
resolve, then force the user onto /settings/company and block navigation to
any other route until the company info is filled in. The gate releases once the
company record has a name; fails open on API error so a transient failure can
never lock the user out.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/dashboard/app/(authenticated)/layout.tsx

@@ -6,6 +6,7 @@ import { DashboardLayout } from "@/base/components/layout/dashboard"
 import { useAuth } from "@/shared/hooks/use-auth"
 import { navGroups } from "@/config/navGroups"
 import { getAuthCookies } from "@/modules/auth/auth.actions"
+import { OnboardingGate } from "@/shared/components/onboarding-gate"
 import { redirect } from "next/navigation"
  
 
@@ -38,7 +39,7 @@ export default async function AuthenticatedLayout({
 
   return (
     <DashboardLayout navGroups={navGroups} logo={<Logo />} user={userInfo}>
-      {children}
+      <OnboardingGate>{children}</OnboardingGate>
     </DashboardLayout>
   )
 }