TESS-M5-003 Documentation Checklist

openapi-tess.yaml: authenticated interaction endpoints including SSE stream, Mos handoff/observe/result, and memory preferences, insights, and search.
User guide: authorized session and handoff workflows.
Admin guide: provisioning, policy, health, and approval boundary.
Developer guide: scope, durable state, and provider adapter contract.
Plugin guide: replaceable-adapter, redaction, and identity-as-data rules.
Operations guide: readiness, recovery, ambiguous-effect safety, and tracing.