Session creation failed with NOT NULL constraint on expires column due to
invalid date propagation from duration parsing. Override adapter.createSession
with validated insert, harden signIn callback, fix createDurationSchema for
numeric-only values, and guard events.ts group insert.
Also relaxes password complexity to suggestions-only (min 8 chars enforced),
extracts shared UserCreatePasswordFields component, and fixes login form
passing extra fields to signIn.
Thomas Camlong
27325326da