Reject graphs with an unwired or double-wired interior input port. A new
name-free structural check `check_ports_connected` in `validate_wiring`
(crates/aura-engine/src/blueprint.rs) requires every interior node's every
declared input slot to be covered by exactly one wiring act — one `Edge{to,slot}`
or one `Role` `Target{node,slot}`, counted uniformly. Zero coverage is the new
`CompileError::UnconnectedPort` (a forgotten connection that today bootstraps a
silent empty column, harness.rs:137-148); more than one is `DoubleWiredPort` (a
slot holds one column). Run once at the existing compile boundary and recursive
per nesting level, so both the raw `Composite::new` and the `GraphBuilder::build`
surfaces inherit it. Index-based, name-free — the compilat is untouched (C23).
Narrowed scope of #65: the original "promote names to load-bearing wiring keys /
close the exposure-price swap structurally" goal is dropped (see the reconciliation
comment on the issue) — #64 already moved authoring to handles + visible port
names, so the residual same-kind swap is a valid-but-wrong name choice no
structural check catches, and a structural fix would push domain semantics into
the domain-free engine (C10/C7). This cycle ships only the name-free half that
stands on its own.
Auto-signed under /boss: precondition gate clean (no fork silently picked),
self-review + parse-trace clean (no spec-validation parser declared -> documented
no-op), grounding-check PASS on the final bytes (one BLOCK on an incomplete
blast-radius survey, repaired forward by naming the three flipping negative tests),
and a unanimous five-lens spec-skeptic panel (criterion, grounding, scope-fork,
ambiguity, plan-readiness all SOUND).
refs #65
Brummel
07b1ae1c63