feat(drug): expose synonyms/tradeNames as {label, source}

[d0choa]

Summary

Propagate the drug_molecule schema change into the API. synonyms and tradeNames changed from array<string> to array<struct<label, source>> (opentargets/pts#142, tracking issue opentargets/issues#4414), and the POS ClickHouse drug table now stores Array(Tuple(label String, source String)) (opentargets/pos#130). The API must read and expose the new shape.

What changed

• app/models/entities/Drug.scala — synonyms/tradeNames: Seq[String] → Seq[LabelAndSource] (the existing type Target already uses), plus an import for its JSON OFormat. The ClickHouse read path (fromPositionedResult) parses each row as JSON via Reads[Drug]; ClickHouse emits a named Tuple(label, source) as a {label, source} object, exactly how crossReferences (Tuple(source, ids)) already deserializes.
• app/models/gql/Objects.scala — the Drug GraphQL type is deriveObjectType, so the synonyms/tradeNames field type auto-updates to [LabelAndSource] (which already has a documented ObjectType exposing label/source). The two DocumentField descriptions are updated to describe the provenance — mirroring the schema documentation added in ot_croissant (feat: document drug_molecule synonyms/tradeNames {label, source} subfields ot_croissant#47):
  • synonyms → "List of alternative names for the drug, each with its source (e.g. ChEMBL, or AACT for names mined from clinical trials)"
  • tradeNames → "List of brand names for the drug, each with its source"

No resolver, search, or other code references drug synonyms/tradeNames as strings (verified), so this is the whole change.

GraphQL impact

synonyms/tradeNames change from [String] to [LabelAndSource] ({ label source }). This is a breaking change for clients that select these as scalars — consumers must now request the subfields. It matches how Target.synonyms is already exposed, and lands with the new data in the 26.06 run.

Note

Based on master. I could not run sbt compile locally (this environment only has Java 17; the project targets Java 21 via sdkman) — the change is a direct reuse of the established LabelAndSource pattern, so CI compilation is the verification.