fix(javascript): retain package entrypoint provenance

src/application/javascript/JavaScriptArtifactGraphStructure.ts

@@ -53,6 +53,7 @@ interface PackageRoleInput {
   readonly packageFile: JavaScriptArtifactFile;
   readonly kind: "electron-main" | "electron-renderer";
   readonly declaredPath: string | null;
+  readonly field: "main" | "renderer" | "browser" | "module";
 }
 
 /** Create the exact root artifact node from the inventory manifest. */
@@ -552,7 +553,9 @@ export const addJavaScriptPackageNodes = (
             version: packageValue.version,
             main: packageValue.main,
             main_status: packageValue.main_status,
-            renderer: packageValue.renderer,
+            // Legacy derived candidate; source fields live in renderer_declarations.
+            renderer: packageValue.renderer_entrypoint?.path ?? null,
+            renderer_declarations: packageValue.renderer_declarations,
             parse_status: packageValue.status,
           },
           evidence: artifactObservationEvidence({
@@ -612,13 +615,16 @@ export const addJavaScriptPackageNodes = (
       packageFile: file,
       kind: "electron-main",
       declaredPath: packageValue.main,
+      field: "main",
     });
-    addPackageRole(context, {
-      packageNode: node,
-      packageFile: file,
-      kind: "electron-renderer",
-      declaredPath: packageValue.renderer,
-    });
+    if (packageValue.renderer_entrypoint !== null)
+      addPackageRole(context, {
+        packageNode: node,
+        packageFile: file,
+        kind: "electron-renderer",
+        declaredPath: packageValue.renderer_entrypoint.path,
+        field: packageValue.renderer_entrypoint.field,
+      });
   }
   return roots;
 };
@@ -755,16 +761,14 @@ const addPackageRole = (
     kind: input.kind,
     anchor: input.packageFile,
     resolution,
-    mechanism:
-      input.kind === "electron-main"
-        ? "package.json:main"
-        : "package.json:renderer",
+    mechanism: `package.json:${input.field}`,
   });
   context.accumulator.addEdge({
     source_node_id: input.packageNode.node_id,
     target_node_id: role.node_id,
     relation: "loads",
     properties: {
+      source_field: input.field,
       declared_path: input.declaredPath,
       resolution_context: resolution.resolution_context,
       resolved_path: resolution.resolved_path,