Create first employee for Customer

Creates an admin employee for B2B customers who don't have one.

bin/console b2b:create:first-employee-for-customer

Automatically generates first employee account for B2B customers.

Behavior:

• Only processes customers with b2b_platform_access = true

• Skips sales representatives

• Only creates employee if customer has zero existing employees

• Copies customer credentials, name, and email to employee

• Grants admin privileges automatically

• Sets department to "N/A"

Use Case:

• After bulk migration to B2B

• Restoring access for customers missing employees

• Initial setup of B2B accounts