v0.12.24 minor user manager buf fixes

backend/src/models/migrations/010_dob_guardian.sql

@@ -0,0 +1,3 @@
+-- Migration 010: Date of birth and guardian fields
+ALTER TABLE users ADD COLUMN IF NOT EXISTS date_of_birth    DATE;
+ALTER TABLE users ADD COLUMN IF NOT EXISTS guardian_user_id INTEGER REFERENCES users(id) ON DELETE SET NULL;