fix(native): require a runtime provider for native identity

[samchon]

Purpose

Closes #2200, which was removed from the consolidated campaign wave (#2266) because no in-repo fixture could express its premise. #2273 fixed that, and the work is now verifiable.

Problem

metadata_symbol_is_global_type decided native identity with checker.ResolveName(name, nil, SymbolFlagsType, false) == symbol. Winning the checker's global type table proves a declaration is global, not that a runtime provides the constructor, so a project whose only File or Blob declaration is its own declare global block won that same lookup. Its members were erased, input instanceof File replaced them, and the check throws ReferenceError wherever no runtime supplies that constructor.

One predicate owns the whole surface: it also gates Map/Set, WeakMap/WeakSet through iterate_metadata_native.go, and all four intersection identity sites.

Approach

Native identity now requires a runtime provider — a default-library declaration, a declaration inside the ambient node:buffer/buffer module, or a constructor binding that resolves into either. The third path is load-bearing rather than defensive: @types/node 25 declares the bare global as interface Blob extends _Blob {} plus var Blob: … typeof buffer.Blob in an ordinary package .d.ts, so nothing but the value binding carries its provenance.

Answering "is this a default library file" from the lib.*.d.ts base name would have made this worse than the bug it closes: under libReplacement real lib files resolve to node_modules/@typescript/lib-es2022/index.d.ts, so genuine Date, Uint8Array, and Map would be demoted to structural in any project using @typescript/lib-*. A checker-keyed MetadataDefaultLibrary registry — modelled on the existing MetadataDependency registry in the same package, registered from both program-loading entrypoints — answers it from prog.TSProgram.IsLibFile instead, the lesson cmd/ttsc-typia/transform.go already learned in #2108. IsLibFile was verified to be set membership (p.libFiles[sourceFile.Path()]), not a name test, so it is a genuinely stronger oracle. metadata_symbol_from_default_lib and its other callers are untouched.

What master already fixed

The original name-only classification was closed by edd86583f2, refined by #2239 5473622897 and #1568 c7f7939d2b. This closes the reopened residual — global-table resolution treated as proof of a runtime provider — not the original report.

Verification

Three regressions, all executing real transforms and then running the emitted validators in Node:

Regression	What it pins
TestUserGlobalNativeIdentityTransform	A user-authored global stays structural across is/assert/assertGuard/validate/equals/random, direct and factory forms, alias, re-export, branded intersection, union, and nested positions, plus the json/protobuf/llm schema surfaces a native classification removes entirely — while a third project where @types/node provides the bridge keeps every instanceof. 28 runtime cases.
TestDefaultLibrarySpoofNativeIdentityTransform	A lib.*.d.ts-named package declaration is refused.
TestLibReplacementNativeIdentityTransform	Genuine natives keep their identity under libReplacement.

The whole packages/typia/native/... tree passes locally.

Fail-before is documented rather than assumed: all three failed before #2273, and the instrumented evidence that the product code was already correct while the fixtures could not express their premise is on the #2200 and #2268 threads.

Two fixture premises corrected

Neither changes what the regression proves; both were stopping it from proving anything.

• typia.llm.schema<File, "chatgpt">() is malformed regardless: the signature is schema<T, Config = {}>($defs), so the model string landed in Config, which must be a literal object type. The transform rejected the whole fixture, making every later assertion unreachable.
• The runner's expected case count was 26 while its table holds 28 assertions — 11 for the validator matrix, 15 for the createIs forms, 2 near-miss name controls. That count is asserted instead of the exit code precisely so a row that stops running cannot pass as a row that ran and agreed, so a wrong count defeats the guard it exists to be.

Known residual, filed separately

metadata_symbol_from_default_lib still answers default-library provenance from the lib.*.d.ts base name for its remaining callers, including metadata_is_global_function_interface. This pull request routes only its own new predicate around that; the rest is untouched and left to its own change.