Passive metadata and policy

The shared vocabulary deliberately excludes behavioral attributes.

Name("delete") says that a declaration has a canonical token. It does not say whether that token is a CLI value, a query value, or a display identifier. The consumer supplies that policy.

Format-specific serialization names remain sparkles:wired policy. CLI Option and Command attributes remain sparkles:core-cli policy. Property visibility and editing attributes remain sparkles:ui policy. Keeping those separate prevents an annotation intended for one domain from silently changing another domain's behavior.

Compatibility aliases such as input's former WireName and property-tree's Doc refer to these canonical types. They are aliases rather than duplicate structs because D UDA lookup depends on type identity.