Function serialize_health_report_json 

pub fn serialize_health_report_json(
    input: HealthJsonReportInput<'_>,
) -> Result<Value, Error>

Serialize a health / complexity report into the stable JSON output contract.

The health runner is still migrating out of the CLI crate, so callers pass the already assembled report plus CLI-owned suggestion and workspace diagnostics policy as explicit typed inputs.

Errors

Returns a serde error when the report cannot be converted to JSON.