Sprint 4+8: protocol and quorum tests

Sprint 3: memory homeostasis tests (T3.1-T3.5)

Sprint 2: durable execution tests (T2.1-T2.5)

Sprint 1: event runtime tests (T1.1-T1.7)

Sprint 0: backward compatibility harness for v2.1.1 API

v2.1.0: creative names (Spark/Flow/swarm/Council/Vault) + prod test 19/19 pass

test: real-world regression test script

test: real-world regression results — 10/10 pass

launch: readiness report + test suite — tests/results/launch_readiness.json

launch: readiness report + test suite — tests/launch_readiness.py

Track 1: tests/test_core.py