Add or modify telemetry instrumentation across assistant-api and integration-api while preserving metric schema compatibility and audit behavior.
Extend observability without breaking existing metric consumers, dashboards, or external audit mappings.
If missing:
In scope:
api/integration-api/internal/caller/metrics/metrics_builder.goapi/integration-api/internal/entity/external_audit.goOut of scope:
go test ./api/integration-api/internal/caller/metrics/...go test ./api/integration-api/internal/caller/<provider>/...go test ./api/assistant-api/internal/transformer/<provider>/...rg -n "TIME_TAKEN|STATUS|stt_latency_ms|tts_latency_ms" api./skills/telemetry-integration/scripts/validate.sh --check-diff --provider <provider>references/checklist.mdreferences/telemetry-checklist.mdexamples/sample.md