Function readFacebookSetupSessionFromRequest

readFacebookSetupSessionFromRequest(req: NextRequest): FacebookSetupSession
Reads and decrypts the Facebook setup session from a request cookie.
Parameters
- req: NextRequest
  Incoming request carrying the setup session cookie.
Returns FacebookSetupSession
Decrypted session or null when missing/invalid.
- Defined in lib/platforms/facebook-setup-session.ts:121