diff --git a/docs/design/INDEX.md b/docs/design/INDEX.md
index bc50328..70d100d 100644
--- a/docs/design/INDEX.md
+++ b/docs/design/INDEX.md
@@ -373,9 +373,10 @@ configuration axis: a collision is a `CompileError` (`IndistinguishableFanIn`)
 when at least one colliding source carries a **param** (a param-bearing same-name
 collision), resolved by giving the colliding nodes distinct names. Paramless
 interchangeable same-name sources (equal signatures, no param) stay legal.
-Construction-phase only; the compilat stays name-free (C23). The graph view
-renders each fan-in input as the shortest sibling-unique prefix of its source
-signature.
+Construction-phase only; the compilat stays name-free (C23), and `signature_of`
+has no render consumer (the ascii-dag fan-in render was retired with the renderer
+in cycle 0026). Surfacing the disambiguating node identity in the WASM graph view
+is tracked follow-up, not yet realized.
 
 ### C10 — Strategy output is an intent/exposure stream; position management is a decoupled derived layer; brokers are downstream nodes
 **Guarantee.** A strategy's primary, backtestable output is **not** an equity