ManifestQuerySchemaSource

The query schema of each aggregate's snapshot model as the Manifest states it: the aggregate's state schema in $defs becomes the declaration of state, its x-wow-* keywords (written by manifest-tools from the :query-api annotations, #4332) the semantic types, aliases and sensitivity of its fields. Nothing is introspected at run time. The snapshot's system fields come from the model's profile (SnapshotQueryModelProfile), not from here.

Only the snapshot model's state is declared here; the events model's events is EventsQuerySchemas'. An aggregate whose snapshots are disabled, or that the Manifest does not hold, has no declaration here.

Custom mask strategies (x-wow-mask.strategy) are resolved through strategies: the runtime does not load classes by name, so an unregistered one fails the schema build.