test(proxy): add regression coverage for the non-landing path classifier

Exports isNonLandingPath and covers the exact prefix-boundary cases
(e.g. /f vs /ffoo, /resume vs /resumes) that the CSP routing fix depends
on, so this logic is verified by CI rather than my own ad-hoc checks.

Author: waleedlatif1

apps/sim/proxy.test.ts

@@ -9,7 +9,7 @@ vi.mock('@/lib/core/config/env', () =>
   createEnvMock({ NEXT_PUBLIC_APP_URL: 'https://app.sim.test' })
 )
 
-import { resolveApiCorsPolicy } from '@/proxy'
+import { isNonLandingPath, resolveApiCorsPolicy } from '@/proxy'
 
 function makeRequest(pathname: string, origin?: string): NextRequest {
   return {
@@ -122,3 +122,38 @@ describe('resolveApiCorsPolicy', () => {
     }
   })
 })
+
+describe('isNonLandingPath', () => {
+  it('matches known non-landing top-level pages and their subpaths', () => {
+    const paths = [
+      '/verify',
+      '/sso',
+      '/reset-password',
+      '/resume',
+      '/resume/workflow-123',
+      '/f',
+      '/f/token-abc',
+      '/invite',
+      '/invite/invite-id',
+      '/playground',
+      '/unsubscribe',
+    ]
+    for (const path of paths) {
+      expect(isNonLandingPath(path)).toBe(true)
+    }
+  })
+
+  it('does not match landing pages', () => {
+    const paths = ['/', '/pricing', '/blog/some-post', '/integrations', '/terms', '/privacy']
+    for (const path of paths) {
+      expect(isNonLandingPath(path)).toBe(false)
+    }
+  })
+
+  it('does not false-positive on landing pages that share a prefix with a non-landing page', () => {
+    // '/ffoo' and '/finance' start with 'f' but are not the '/f/:token' route
+    expect(isNonLandingPath('/ffoo')).toBe(false)
+    expect(isNonLandingPath('/finance')).toBe(false)
+    expect(isNonLandingPath('/resumes')).toBe(false)
+  })
+})

apps/sim/proxy.ts

@@ -135,7 +135,7 @@ const NON_LANDING_PATH_PREFIXES = [
   '/unsubscribe',
 ]
 
-function isNonLandingPath(pathname: string): boolean {
+export function isNonLandingPath(pathname: string): boolean {
   return NON_LANDING_PATH_PREFIXES.some(
     (prefix) => pathname === prefix || pathname.startsWith(`${prefix}/`)
   )