Build a RefSeq Transcript Isoform StructureDefinition Inspector — implementation

## Build
Validate research transcript annotation records against custom FHIR StructureDefinition rules. Verify required molecular elements, cardinality, and coding bindings for translational genomics catalogs.

## User
Health Informatics Conformance Lead

## Workflow
1. Ingest transcript metadata and gene annotations parsed from NCBI Datasets packages.
2. Evaluate incoming JSON payloads against FHIR R5 StructureDefinition conformance profiles.
3. Identify cardinality violations, missing required codings, or invalid extension URLs.
4. Emit an authoritative FHIR OperationOutcome report detailing compliance issues.

## Interface
Validation workbench highlighting schema compliance badges, path-level error trees, and JSON diffs.

## Data
Use synthetic transcript FHIR Observation files derived from NCBI Datasets gene reports.
Starter examples below are synthetic. They are not downloaded records.

## Source
[HL7 FHIR overview](https://hl7.org/fhir/overview.html)
Applies FHIR StructureDefinition conformance rules to restrict element cardinality and terminology bindings.

## Tools
evidently-ai, pydantic, jsonschema.
evidently-ai evaluates schema drift and validation error rates across successive batches of FHIR payloads.
Local Python script execution environment; language model not required for core JSON schema validation logic.

## Deliverables
Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

## Acceptance
- Evaluate payload compliance against FHIR StructureDefinition element rules.
- Produce an OperationOutcome resource containing severity and diagnostics fields.
- Track error distributions across ingestion batches with Evidently AI test suites.

## Starter Examples
```json
[
  {
    "input": {
      "resourceType": "Observation",
      "status": "final",
      "code": {
        "coding": [
          {
            "system": "http://loinc.org",
            "code": "48018-6",
            "display": "Gene studied"
          }
        ]
      },
      "valueString": "BRCA1"
    },
    "expected_output": {
      "resourceType": "OperationOutcome",
      "issue": [
        {
          "severity": "information",
          "code": "informational",
          "diagnostics": "Payload conforms to StructureDefinition"
        }
      ],
      "valid": true
    }
  },
  {
    "input": {
      "resourceType": "Observation",
      "status": "final",
      "code": {},
      "valueString": "BRCA1"
    },
    "expected_output": {
      "resourceType": "OperationOutcome",
      "issue": [
        {
          "severity": "error",
          "code": "required",
          "diagnostics": "Missing required element 'coding' in code"
        }
      ],
      "valid": false
    }
  }
]
```

## Safety
Restricted to schema syntax and conformance checking. No human clinical decision support or protected health data.
Use mock external writes. Require human review before any real deployment.