Move gen_ai.usage.*, gen_ai.request.model, gen_ai.provider.name, and
gen_ai.user.id from companion-log-only to span attributes on workflow
and node execution spans.
These are small scalars with no size risk. Having them on spans enables
filtering and grouping in trace UIs (Tempo, Jaeger, Datadog) without
requiring a cross-signal join to companion logs.
Data dictionary updated: span tables gain the new fields; companion log
'additional attributes' tables trimmed to only list fields not already
covered by 'All span attributes'.
Add comprehensive model tracking across all OTEL metrics and logs:
- Node execution metrics now include model_name for LLM operations
- Suggested question metrics include model_provider and model_name
- Dataset retrieval captures both embedding and rerank model info
- Updated DATA_DICTIONARY.md with complete metric label documentation
This enables granular cost tracking, performance analysis, and usage monitoring per model across all operation types.
Separate background/configuration instructions from the data dictionary:
- README.md: Overview, configuration, correlation model, content gating
- DATA_DICTIONARY.md: Pure reference format with signals and attributes
The data dictionary is now concise (465 lines vs 911) and focuses on
attribute types and relationships without verbose explanations.
