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Colby Mchenry
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extractInheritance's Go interface-embedding branch matched a `constraint_elem`, a node type neither the vendored tree-sitter-go wasm nor the kernel's tree-sitter-go 0.23 crate has: both parse an embedded interface as a `type_elem` holding one type. So no Go interface ever extended anything, in either engine; gin's IRouter never reached IRoutes. Read an embedded type the same way in an interface and in a struct: `T`, `*T`, `pkg.T` and `T[X]` all embed `T`, recorded at the name so resolution reads the package back from the source (#2322). A type_elem holding a union, a `~T` term or a lone predeclared type is a type-set constraint and records nothing, and predeclared names (`error`, `any`) are skipped in structs too. Qualified and generic struct embeddings, skipped until now, link the same way. Resolution keeps an embedded type in its package. The Go framework resolver's naming heuristics no longer take extends/implements refs: its PascalCase-model pattern saw structs only, so an embedded interface went to another package's same-named struct (promql/parser's Node, etcd's Lease), as #1827 did for Spring. And a Go supertype written through a package that is none of the file's imports as indexed (`yaml` under an unaliased go.yaml.in/yaml/v3, registered as `v3`) stays unresolved instead of binding by its bare name. Validated on gin, prometheus and etcd (before/after edge diffs, every added supertype edge checked against its package; kernel/wasm parity sweeps unchanged). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>