| Schema | Purpose |
|---|---|
| live session | room, media mode and participant state |
| case-state | durable case/workflow state |
| evidence | provenance-aware evidence |
| diagnosis | differential assessment |
| research source | external source quality/applicability |
| environment context | weather/soil/terrain |
| policy decision | exact authorization/calculation |
| escalation | human review |
| audit event | append-only event |
Breaking changes create a major schema version. Model output must pass JSON Schema and semantic validation. Stored records retain the schema version used.