Add SPA session validation and buglist, update migration docs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/playwright/lib/mcp/test/seed.js

@@ -28,7 +28,10 @@ var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__ge
 var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
 var seed_exports = {};
 __export(seed_exports, {
-  ensureSeedTest: () => ensureSeedTest,
+  defaultSeedFile: () => defaultSeedFile,
+  ensureSeedFile: () => ensureSeedFile,
+  findSeedFile: () => findSeedFile,
+  seedFileContent: () => seedFileContent,
   seedProject: () => seedProject
 });
 module.exports = __toCommonJS(seed_exports);
@@ -44,29 +47,36 @@ function seedProject(config, projectName) {
     throw new Error(`Project ${projectName} not found`);
   return project;
 }
-async function ensureSeedTest(project, logNew) {
+async function findSeedFile(project) {
   const files = await (0, import_projectUtils.collectFilesForProject)(project);
-  const seed = files.find((file) => import_path.default.basename(file).includes("seed"));
-  if (seed)
-    return seed;
+  return files.find((file) => import_path.default.basename(file).includes("seed"));
+}
+function defaultSeedFile(project) {
   const testDir = project.project.testDir;
-  const seedFile = import_path.default.resolve(testDir, "seed.spec.ts");
-  if (logNew) {
-    console.log(`Writing file: ${import_path.default.relative(process.cwd(), seedFile)}`);
-  }
-  await (0, import_utils.mkdirIfNeeded)(seedFile);
-  await import_fs.default.promises.writeFile(seedFile, `import { test, expect } from '@playwright/test';
+  return import_path.default.resolve(testDir, "seed.spec.ts");
+}
+async function ensureSeedFile(project) {
+  const seedFile = await findSeedFile(project);
+  if (seedFile)
+    return seedFile;
+  const seedFilePath = defaultSeedFile(project);
+  await (0, import_utils.mkdirIfNeeded)(seedFilePath);
+  await import_fs.default.promises.writeFile(seedFilePath, seedFileContent);
+  return seedFilePath;
+}
+const seedFileContent = `import { test, expect } from '@playwright/test';
 
 test.describe('Test group', () => {
   test('seed', async ({ page }) => {
     // generate code here.
   });
 });
-`);
-  return seedFile;
-}
+`;
 // Annotate the CommonJS export names for ESM import in node:
 0 && (module.exports = {
-  ensureSeedTest,
+  defaultSeedFile,
+  ensureSeedFile,
+  findSeedFile,
+  seedFileContent,
   seedProject
 });