Advance M8-M11 parity workflows

web/tests/e2e/nanovdb-opfs-restart.spec.ts

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+import { expect, test } from "@playwright/test";
+
+test("M8-14 Worker restart restores the OPFS manifest without trusting resident pages", async ({ page }) => {
+  await page.goto("/");
+  const run = (action: "prepare" | "reopen", state?: unknown): Promise<any> => page.evaluate(({ action, state }) => new Promise<any>((resolve, reject) => {
+    const worker = new Worker("/src/workers/nanovdb-opfs-restart-test.worker.ts", { type: "module" });
+    worker.onmessage = (event) => { worker.terminate(); event.data.error ? reject(new Error(event.data.error)) : resolve(event.data); };
+    worker.onerror = (event) => { worker.terminate(); reject(new Error(event.message)); };
+    worker.postMessage({ action, state });
+  }), { action, state });
+  const prepared = await run("prepare");
+  const reopened = await run("reopen", {
+    projectId: prepared.projectId,
+    bundleSha256: prepared.bundleSha256,
+    claimedResidentPages: prepared.claimedResidentPages,
+  });
+  expect(prepared.residentBeforeRestart).toEqual([0]);
+  expect(reopened.manifestSha256).toBe(prepared.bundleSha256);
+  expect(reopened.claimedResidentPages).toEqual([0]);
+  expect(reopened.residentBeforeRestore).toEqual([]);
+  expect(reopened.residentAfterRestore).toEqual([0]);
+  expect(reopened.pageBytes).toBe(64 * 1024);
+  expect(reopened.tamperedError).toContain("NANOVDB_HASH_MISMATCH");
+  expect(reopened.residentAfterTamperedRestore).toEqual([]);
+});