Merge branch 'research/claude-code-risk-analysis'

docs(security): add cleanup-host-contract chapter

Merge branch 'mainloop'

Merge branch 'research/claude-code-risk-analysis'

docs(playbooks): add host repair steady-state correction recorrection rewrite correction refinement correction execution layer

Merge branch 'mainloop'

docs(security): add cleanup-projection chapter

docs(security): add cleanup-protocol-fields chapter

docs(api): add host repair steady-state correction recorrection rewrite correction refinement correction protocol layer

docs(security): add cleanup-audit chapter

docs(security): add cleanup-authority chapter

docs(security): add writer-revocation chapter

docs(security): add state-machine constitution chapter

docs(guides): add host repair steady-state correction recorrection rewrite correction refinement guide layer

docs(security): add state-machine chapter