WriteOTel writes events as OTLP-style log records mapped to GenAI/agent
semantic conventions, with AgentDFIR-specific attributes under the
agentdfir.* namespace (plan §10). One JSON document (OTLP/JSON logs).
WriteSTIX writes findings as a STIX 2.1 bundle (indicator +
observed-data objects). Deterministic IDs are derived from content so
re-exports are stable.