attribute

The only attribute keys LVCS spans and metrics may carry. Each value set is bounded: a key whose values are a vocabulary is bounded by that vocabulary's rendered Cardinality line. Never use workspace ids, full paths, participant ids, peer ids, frontier ids, or message text as attribute values.

Value	Meaning
`ws_class`	Workspace class: a `ws_class` value.
`ws_name`	Workspace name: one of at most `WS_NAME_CAP` names listed in `lvcs.toml`, otherwise `other`.
`subtree`	Subtree: one of at most `SUBTREE_CAP` directory prefixes listed in `lvcs.toml` `[telemetry] subtrees`, the longest that contains the path, otherwise `other`.
`actor_kind`	Actor kind: an `actor_kind` value, `Context::KIND`.
`doc_kind`	Document kind: a `doc_kind` value.
`op`	Operation name: an `op` value.
`outcome`	Outcome: an `outcome` value.
`wire_kind`	Wire message kind: a `wire_kind` value, on spans of the net actors (`M3.sync`, `M3.gossip`, `M3.coord`). A kind outside the set (a newer minor version) is reported as its envelope is ignored, never as an attribute value.
`rejection`	Why a wire message, a synced change, or a request was refused: a `rejection` value, recorded with `outcome` = `rejected` (`M3.gossip`, `M3.sync`, `M3.doc`, `M3.grants`, `M3.secrets`).
`announce_source`	Who made a local notification: a `announce_source` value, on the `announce` span only.
`step_kind`	What a step runs: a `step_kind` value, on the `action.step` span only.
`rpc_transport`	Which connection a request came on: a `rpc_transport` value, on the `rpc` span.

Cardinality: 12.