Switch from Apache-2.0 to Business Source License 1.1. No code changes
from alpha.7. BSL permits personal use, internal deployment, and
non-competitive embedding; only hosted multi-agent SaaS competitive
offerings are restricted. Auto-converts back to Apache-2.0 on 2030-05-16.

All versions at or before 0.6.0-alpha.7 remain permanently Apache-2.0.