test: reduce brittle assertions and test-only runtime paths (#9289)

* test: focus assertions on behavioral evidence

Prune redundant and wording-coupled checks while retaining diagnostic, parser, recovery, and cleanup coverage.

* refactor: remove test-only wrappers and duplicate checks

Exercise production operations through test fixtures, remove unused adapters, and keep managed-member uncertainty guidance under its existing owner.

* test: focus process validation on diagnostic facts

* refactor: remove test-only runtime helpers

Move semantic evidence fixture setup out of runtime and remove unused Windows settle recovery helpers while checking configured defaults independently.

* test: focus artifact diagnostics on format facts

* test: verify retained cleanup guidance delivery

tests/boundary/filesystem/javascript-applications/javascriptApplicationService.test.ts

@@ -572,7 +572,6 @@ describe("JavaScript application symbolic coverage", () => {
       format: "directory",
       source_paths: ["self.js", "mutual.js"],
     });
-    expect(result.ok).toBe(true);
     if (!result.ok) throw result.error;
     const normalized = javascriptApplicationAnalysisResultSchema.parse(
       result.value.normalized_result,