pub fn metric_specs() -> (BTreeMap<String, AttributeSpec>, BTreeMap<String, AttributeGroup>)Expand description
The metric attribute dictionary + category groups, read from builtin.toml.
Includes the emitted measured metrics ([ast.*] entries that carry a display
spec, i.e. have a label) and every derived [fields.*] metric. Pure AST
inputs (no label) are excluded — they are formula inputs, not emitted.