Advance M8-M11 parity workflows

web/tests/e2e/physics-cache-family.spec.ts

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+import { expect, test } from "@playwright/test";
+import fs from "node:fs";
+import path from "node:path";
+
+const root = path.resolve(import.meta.dirname, "../../..");
+const expected = JSON.parse(fs.readFileSync(path.join(root, "tests/golden/M10-14/physics-cache-family.json"), "utf8"));
+
+test("M10-14 verifies every Physics family cache before playback", async ({ page }) => {
+  await page.goto("/");
+  const result = await page.evaluate(() => new Promise<Record<string, unknown>>((resolve, reject) => {
+    const worker = new Worker("/src/workers/physics-cache-family-test.worker.ts", { type: "module" });
+    worker.onmessage = (event: MessageEvent<Record<string, unknown>>) => { worker.terminate(); resolve(event.data); };
+    worker.onerror = (event) => { worker.terminate(); reject(new Error(event.message)); };
+    worker.postMessage({});
+  })) as {
+    verified: Array<{ family: string; source: string; bytes: number; frames: number }>;
+    sourceMismatch: string;
+    payloadMismatch: string;
+    versionMismatch: string;
+    budgetExceeded: string;
+  };
+  expect(result.verified.map((entry) => entry.family)).toEqual(expected.families);
+  expect(result.verified.map((entry) => entry.source)).toEqual(expected.sources);
+  expect(result.verified.every((entry) => entry.bytes === expected.byteLength)).toBe(true);
+  expect(result.verified.every((entry) => entry.frames === expected.frameCount)).toBe(true);
+  expect(result.sourceMismatch).toBe(expected.sourceMismatch);
+  expect(result.payloadMismatch).toBe(expected.payloadMismatch);
+  expect(result.versionMismatch).toBe(expected.versionMismatch);
+  expect(result.budgetExceeded).toBe(expected.budgetExceeded);
+});