Adobe Skip if this feature doesn't contain or require indexes.
Create services/main-service/index-database/: index-database.ts (extends CoreDatabase, adds the indexes
facet from ./indexes/index.js) plus an indexes/ folder — one index per file + an index.ts
barrel.
Only if the feature needs indexed lookups. Comes after core-database.
The how is in the auto-loading features/services/main-service/indexes.md rule.