fix(landing): resolve error-page crash on invalid /models and /integrations routes

apps/sim/app/(landing)/integrations/[slug]/loading.tsx

@@ -0,0 +1,9 @@
+import { Loader } from '@/components/emcn'
+
+export default function IntegrationDetailLoading() {
+  return (
+    <div className='flex min-h-[60vh] items-center justify-center bg-[var(--landing-bg)]'>
+      <Loader animate className='h-6 w-6 text-[var(--landing-text-muted)]' />
+    </div>
+  )
+}

apps/sim/app/(landing)/models/[provider]/[model]/loading.tsx

@@ -0,0 +1,9 @@
+import { Loader } from '@/components/emcn'
+
+export default function ModelDetailLoading() {
+  return (
+    <div className='flex min-h-[60vh] items-center justify-center bg-[var(--landing-bg)]'>
+      <Loader animate className='h-6 w-6 text-[var(--landing-text-muted)]' />
+    </div>
+  )
+}

apps/sim/app/(landing)/models/[provider]/loading.tsx

@@ -0,0 +1,9 @@
+import { Loader } from '@/components/emcn'
+
+export default function ModelProviderLoading() {
+  return (
+    <div className='flex min-h-[60vh] items-center justify-center bg-[var(--landing-bg)]'>
+      <Loader animate className='h-6 w-6 text-[var(--landing-text-muted)]' />
+    </div>
+  )
+}

apps/sim/lib/auth/auth-client.ts

@@ -15,8 +15,17 @@ import { isBillingEnabled, isOrganizationsEnabled } from '@/lib/core/config/feat
 import { getBaseUrl } from '@/lib/core/utils/urls'
 import { SessionContext, type SessionHookResult } from '@/app/_shell/providers/session-provider'
 
+function getAuthBaseUrl(): string {
+  try {
+    return getBaseUrl()
+  } catch (e) {
+    if (typeof window !== 'undefined') return window.location.origin
+    throw e
+  }
+}
+
 export const client = createAuthClient({
-  baseURL: getBaseUrl(),
+  baseURL: getAuthBaseUrl(),
   plugins: [
     adminClient(),
     emailOTPClient(),