super<name> originals are only registered for model overrides — controller/view helper overrides get no superLinkTo() #3325

Context

Discussion #3323: a user followed the v3 guide Overriding Core Methods, overrode linkTo(), and called superLinkTo() — HTTP 500, because that function never exists in controller/view context.

Root cause

The super<name> convention is implemented asymmetrically:

vendor/wheels/Model.cfc → $integrateFunctions() (~line 598) — when the mixin method name already exists on the target (i.e. the app overrode it), the else branch registers the framework original as super<name>:

if (!(StructKeyExists(variables, local.name) || StructKeyExists(this, local.name))) {
    variables[local.name] = local.ref;
    this[local.name] = local.ref;
} else {
    local.superName = "super" & local.name;
    variables[local.superName] = local.ref;
    this[local.superName] = local.ref;
}

vendor/wheels/Controller.cfc → $integrateFunctions() (~line 400) — no else branch. super<name> is only registered when a registered plugin/package mixin overrides the name (overrideSet). App-level overrides of controller/view helpers (defined in app/controllers/Controller.cfc or app/views/helpers.cfm) silently get nothing.

vendor/wheels/Mapper.cfc has its own $integrateFunctions() variant (~line 403) — worth checking for the same gap while in there.

Repro (verified live on develop, Lucee)

1. In app/views/helpers.cfm define an override:

   public string function linkTo() {
       return superLinkTo(argumentCollection = arguments);
   }

2. Render any view that calls linkTo() → error, superLinkTo is undefined.
3. StructKeyExists(variables, "superLinkTo") in the view returns false. The equivalent model-side override does get superFindAll() etc.

Proposed fix

1. Add the same else branch to Controller.cfc::$integrateFunctions() (and Mapper.cfc if applicable) so controller/view overrides get super<name> parity with models. ~5 lines + a spec.
2. Docs: the v3 guide presents the convention as general (it is model-only today), and the v4-0-0 guide tree has no "Overriding Core Methods" page at all — port + correct it once the parity fix lands.

Workaround for users today

Capture the original reference manually (late-binding — same trick $integrateFunctions itself uses); posted in #3323:

variables.coreLinkTo = CreateObject("component", "wheels.view.links").linkTo;