fix(javascript): preserve map boundaries and loader provenance

Share embedded-map version admission and derive indexed overlap from represented mappings. Carry createRequire filename bases through worker facts and graph identity. Select factory export bindings at each bundler owner.

Validated accepted and malformed source maps through real CLI and stdio MCP codec workflows; verified loader and esbuild graph output against Node runtime controls. Rebased consumer checks passed.

Fixes #6803

Fixes #6614

Fixes #6798

Fixes #6797

src/application/javascript/JavaScriptArtifactGraphFindings.ts

@@ -1,4 +1,5 @@
 import { createHash } from "node:crypto";
+import { posix } from "node:path";
 
 import { compactStringIdentityKey } from "../../domain/compactStringIdentity.js";
 import type { ApplicationNode } from "../../domain/javascript/javascriptApplicationGraphSchemas.js";
@@ -306,6 +307,7 @@ const addReference = (
       kind: input.value.kind,
       specifier: input.value.specifier,
       expression: input.value.expression,
+      resolution_base_path: input.value.resolution_base_path ?? null,
       resolution_mode:
         input.value.kind === "static-import" ||
         input.value.kind === "dynamic-import" ||
@@ -634,6 +636,12 @@ const resolveReference = (
   if (specifier === null) return null;
   const isWorker =
     reference.kind === "worker" || reference.kind === "service-worker";
+  const resolutionSourcePath =
+    reference.kind === "require" && reference.resolution_base_path !== undefined
+      ? posix.normalize(
+          posix.join(posix.dirname(sourcePath), reference.resolution_base_path),
+        )
+      : sourcePath;
   const chunk = isWorker
     ? null
     : resolveBundlerChunkReference(context, sourcePath, reference);
@@ -668,7 +676,7 @@ const resolveReference = (
       })
     : resolveArtifactPathByContext({
         declaredPath: specifier,
-        sourcePath,
+        sourcePath: resolutionSourcePath,
         context: "module-specifier",
         files: context.filesByPath,
         jsonDocuments: context.analysis.jsonDocuments,
@@ -679,7 +687,7 @@ const resolveReference = (
         "dynamic-import" === reference.kind
           ? {
               moduleKind: moduleResolutionModeForJavaScriptReference(
-                sourcePath,
+                resolutionSourcePath,
                 reference.kind,
               ),
             }