fix(tests): improve Playwright test reliability with robust onboarding and timing fixes

- Fix onboarding dialog handling in project creation tests
  * Replace blocking onboarding dismissal with try-catch approach
  * Use short timeout (2000ms) to detect dialog presence
  * Gracefully handle missing onboarding dialogs on projects page
  * Add console logging for debugging dialog state

- Improve project creation timing and synchronization
  * Add networkidle wait after project save operation
  * Add networkidle wait before project list search
  * Increase timeout for project visibility check (10s)
  * Add debug logging to show all projects in list

- Apply consistent pattern across both test files
  * 20-create-project.spec.ts: Enhanced with timing fixes
  * 25-create-project-x10.spec.ts: Applied onboarding fix

These changes resolve test failures caused by UI timing issues
and onboarding dialog state variability, improving test reliability
from 42/44 passing to expected 44/44 passing tests.

test-playwright/25-create-project-x10.spec.ts

@@ -126,11 +126,16 @@ test('Create 10 new projects', async ({ page }) => {
   for (let i = 0; i < projectCount; i++) {
     await page.goto('./projects');
     if (i === 0) {
-      // close onboarding using established pattern
-      await page.getByTestId('closeOnboardingAndFinish').click();
-      await page.waitForFunction(() => {
-        return !document.querySelector('.dialog-overlay');
-      }, { timeout: 5000 });
+      // Check if onboarding dialog exists and close it if present
+      try {
+        await page.getByTestId('closeOnboardingAndFinish').click({ timeout: 2000 });
+        await page.waitForFunction(() => {
+          return !document.querySelector('.dialog-overlay');
+        }, { timeout: 5000 });
+      } catch (error) {
+        // No onboarding dialog present, continue
+        console.log('No onboarding dialog found on projects page');
+      }
     }
     await page.locator('button > svg.fa-plus').click();
     await page.getByPlaceholder('Idea Name').fill(finalTitles[i]); // Add random suffix