fix(e2e): resolve admin user journey authentication and stabilize flaky tests

- Fix loginAdminAndSetCookie to set both cookie (middleware) and localStorage (auth-context)
- Add page navigation before localStorage evaluate to avoid SecurityError
- Update Playwright webServer to npm run dev for API route support
- Fix UJ-10 CSS selector parsing error (text= regex mixed with CSS)
- Fix cases-filter flaky test (getByRole('radio') → locator('button[role="radio"]'))
- Update test-strategy-plan.md: mark UJ-03/06/07 as ✅ completed
- Update README.md with admin fix progress record

config/test/jest.config.js

@@ -16,6 +16,7 @@ module.exports = {
     'src/components/sections/**/*.{ts,tsx}',
     'src/components/content/**/*.{ts,tsx}',
     'src/components/analytics/**/*.{ts,tsx}',
+    'src/components/cms/**/*.{ts,tsx}',
     'src/hooks/**/*.{ts,tsx}',
     'src/lib/**/*.ts',
     '!src/**/*.d.ts',
@@ -82,6 +83,12 @@ module.exports = {
       lines: 35,
       statements: 35,
     },
+    './src/components/cms/': {
+      branches: 80,
+      functions: 80,
+      lines: 80,
+      statements: 80,
+    },
     './src/components/seo/': {
       branches: 80,
       functions: 80,