attributes
One LOGS query-selector block: EXACT store column -> raw SCALAR value (mirroring the scalar MetadataAttributeMap). Keyed by the store column that carries the value (e.g. resource.attributes['service.name'], attributes['aws.local.service'], @logGroupName) so the selector matches the emitted signal. A dimension seen under several values (a service under two namespaces, several log groups) becomes several blocks with the same columns and different values, which the console ORs. Dedicated to the LOGS selector so its cap evolves independently of the metric attribute map and the TRACES map. Selector caps are deliberately DISTINCT from the metric caps.