Improve placeholder URLs with concrete examples

Co-authored-by: stnguyen90 <1477010+stnguyen90@users.noreply.github.com>

.github/agents/CHECKLIST.md

@@ -60,7 +60,7 @@ const { chromium } = require('playwright');
   const browser = await chromium.launch();
   const page = await browser.newPage();
   await page.setViewportSize({ width: 1920, height: 1080 });
-  await page.goto('http://localhost:PORT/YOUR-PATH');
+  await page.goto('http://localhost:3000/dashboard'); // Replace with your actual URL
   await page.waitForLoadState('networkidle');
   await page.screenshot({ path: '/tmp/pr-screenshots/screenshot.png', fullPage: true });
   await browser.close();

.github/agents/code-change-agent.md

@@ -44,8 +44,8 @@ Take screenshots in the following scenarios:
      const browser = await chromium.launch();
      const page = await browser.newPage();
      
-     // Navigate to the changed UI
-     await page.goto('http://localhost:PORT/YOUR-PATH');
+     // Navigate to the changed UI (replace with your actual URL)
+     await page.goto('http://localhost:3000/dashboard');
      
      // Wait for the page to fully load
      await page.waitForLoadState('networkidle');
@@ -74,7 +74,8 @@ Take screenshots in the following scenarios:
    const { test, expect } = require('@playwright/test');
    
    test('capture UI changes', async ({ page }) => {
-     await page.goto('http://localhost:PORT/YOUR-PATH');
+     // Replace with your actual URL
+     await page.goto('http://localhost:3000/dashboard');
      await expect(page).toHaveScreenshot('ui-state.png');
    });
    ```

.github/agents/screenshot-guide.md

@@ -23,8 +23,8 @@ const { chromium } = require('playwright');
   // Set viewport size
   await page.setViewportSize({ width: 1920, height: 1080 });
   
-  // Navigate to your changed page
-  await page.goto('http://localhost:PORT/your-path');
+  // Navigate to your changed page (replace with actual URL, e.g., http://localhost:3000/settings)
+  await page.goto('http://localhost:3000/dashboard');
   await page.waitForLoadState('networkidle');
   
   // Take screenshot