Merge main (squashed #69, #70) into feat/d-owner-labels

# Conflicts:
#	agents/adapters/claude.ts
#	agents/adapters/codex.ts
#	agents/adapters/setup.ts
#	agents/container/profile.ts
#	agents/container/run.ts
#	agents/contract.ts
#	agents/network/network.ts
#	docs/implementation/agent-isolation.md
#	docs/implementation/runner-lifecycle.md
#	test/agent-adapter-cleanup.test.ts
#	test/agent-container.test.ts
#	test/agent-launch.test.ts
#	test/agent-network.test.ts
#	test/agent-settlement-supervisor.test.ts
#	test/agent-settlement.test.ts
#	test/agent-supervisor.test.ts

Author: mchwang