fix(javascript): preserve builtin identity and share alias traversal

Track module writes and escapes at their owner, preserve capture and reassignment ordering, and share CommonJS/default namespace identity without erasing parent-slot changes. Carry write sites into ambient alias resolution and use parsed write targets across consumers. Deduplicate returned-reference work with cycle context; retain unchanged temporal selection identity so provenance memoization stays effective.

Reviewed fixes include #2041, #2465, #2830, #2881, and #2948. Remove superseded mutation representations and the ineffective per-markValue dedup layer.

Validation: 380 focused JavaScript tests passed under a 384 MiB heap cap, including the previously aborting 30-level/128-call alias regression. Six public CLI/MCP builtin tests passed. Exact pdf.js completed-workflow performance remains unmeasured.

src/domain/javascript/javascriptSemanticMutationInitializers.test.ts

@@ -48,7 +48,7 @@ describe("parameter references copied into function body bindings", () => {
         name: "arg",
         kind: "variable",
         mutable: true,
-        mutatedPaths: [],
+        memberWrites: [],
         escapedPaths: [],
         definitions: [],
         initializers: [entry, assigned],