Changed the internal signup script to read /tmp/signup-users.csv without arguments, distribute undated rows across the last three weeks, and append account outcomes to a separate record file. Added ordinary referral attribution for newly created accounts, defaulting to user ID 6, without a simulation field on users. Referral rewards and payouts are not enabled.
Signup test imports and referral attribution
The signup test script reads a default CSV, skips existing emails, and records outcomes in a file.