ci: reduce retries to 1 and increase workers to 2

- Retries reduced from 2 to 1 (retries are helping with flaky remote tests but 2 is overkill)
- Workers increased from 1 to 2 in CI for parallel project execution

playwright.config.ts

@@ -11,9 +11,9 @@ export default defineConfig({
   // Fail the build on CI if you accidentally left test.only in the source code.
   forbidOnly: !!process.env.CI,
   // Retry on CI only.
-  retries: process.env.CI ? 2 : 0,
-  // Always run with 1 worker to avoid database conflicts
-  workers: 1,
+  retries: process.env.CI ? 1 : 0,
+  // Use 2 workers in CI for parallel project execution; 1 locally
+  workers: process.env.CI ? 2 : 1,
   // Reporter to use
   reporter: 'html',
   // Global setup and teardown