3c4b667955
The op-script authoring form is meant to be the Rust builder lifted into data —
every op is a 1:1 image of a GraphBuilder method. The one un-builder-ish key was
`add`'s `"as"`: the builder names a node with `.named("fast")`, so the data echo
is `"name"`, not the SQL-ish aliasing word `as`. Renamed the `add` wire key
`as -> name`.
`expose` keeps `as` — there it is a genuine alias (`expose bias.bias as bias`,
mirroring the builder's positional name arg). `source`/`input` keep their terse
verbs: those are plain shortenings of `source_role`/`input_role`, not a foreign
concept the way `as`-for-naming was.
CLI-side only: a one-attribute serde rename on the `OpDoc` Add DTO
(`#[serde(rename = "name")]`), since the engine `Op` is serde-free (the engine
field stays `as_name`, untouched). Updated the op-list test documents to the
`name` key (add ops only; expose's `as` left intact) and added an explicit pin
(`add_names_node_via_name_key`). The cycle-0088 fieldtest corpus
(fieldtests/cycle-0088-construction-op-script/*.json) is left on the old `as`
form as historical cycle-0088 evidence (it is not run by the suite).
Verified: full workspace suite + clippy green; `aura graph build` on a `name`-keyed
doc names the node and emits it in the #155 blueprint.