SquadRotate beta update: easier sign-in and league codes

Sign in with email and password
Magic links are gone. Create a password once and sign in like you would anywhere else.

Get your roster with a league code
If your league runs on LeagueRun, your commissioner can hand you a code. Redeem it in SquadRotate and your roster comes over automatically, no retyping players.

Under the hood
Reliability and security hardening across the app, plus better error reporting so we catch problems before you hit them.