perf(observation): validate document identity against snapshot roots

apps/extension/src/browser-driver/__tests__/frame-graph.test.ts

@@ -2,24 +2,6 @@ import { describe, expect, it } from "vitest";
 import { buildFrameGraph, type CdpFrameTreeNode, type CdpFrameTreeSource } from "../frame-graph";
 
 describe("buildFrameGraph", () => {
-  it("preserves the owning target's loader identity", () => {
-    const graph = buildFrameGraph([
-      {
-        target: { tabId: 4 },
-        tree: {
-          frame: { id: "root", loaderId: "root-loader" },
-          childFrames: [{ frame: { id: "child", loaderId: "stale-placeholder" } }],
-        },
-      },
-      {
-        target: { tabId: 4, sessionId: "child-session" },
-        tree: { frame: { id: "child", loaderId: "child-loader" } },
-      },
-    ]);
-    expect(graph?.frames.find((frame) => frame.frameId === "root")?.loaderId).toBe("root-loader");
-    expect(graph?.frames.find((frame) => frame.frameId === "child")?.loaderId).toBe("child-loader");
-  });
-
   it("keeps sibling frames distinct and routes nested OOPIFs to their child sessions", () => {
     const graph = buildFrameGraph([
       {

apps/extension/src/browser-driver/frame-graph.ts

@@ -8,7 +8,6 @@ export interface CdpFrame {
   parentFrameId?: string;
   ownerBackendNodeId?: number;
   url?: string;
-  loaderId?: string;
   target: CdpTarget;
 }
 
@@ -22,7 +21,6 @@ export interface CdpFrameTreeNode {
     id: string;
     parentId?: string;
     url?: string;
-    loaderId?: string;
   };
   childFrames?: CdpFrameTreeNode[];
 }
@@ -50,7 +48,6 @@ function mergeFrame(
     frameId: node.frame.id,
     ...(parentFrameId ? { parentFrameId } : {}),
     ...(url ? { url } : {}),
-    ...(node.frame.loaderId ? { loaderId: node.frame.loaderId } : {}),
     target,
   });
 }