Versioning Content Packs for Cross-Language Learning Platforms

Advanced Problem

Cross-language content packs become unmaintainable when there is no manifest discipline, no compatibility strategy, and no migration path for old clients.

Step 1: Version each pack with explicit schema + content revisions

{
  "pack": "jp-core-1",
  "schema_version": 2,
  "content_version": "2026.03.01",
  "min_client": "1.8.0"
}

Step 2: Add migration adapters between schema versions

function migrateV1toV2(entry: any) {
  return {
    id: entry.id,
    surface: entry.term,
    reading: entry.reading || null,
    meanings: Array.isArray(entry.meanings) ? entry.meanings : [entry.meaning],
  };
}