add Playwright CLI comparison table to website and README

Closes #57

Highlights key differences: Playwriter uses your existing Chrome
(logins, extensions, cookies), can bypass captchas by disconnecting
the extension, lets you collaborate in the same browser window,
and gives full Playwright API + raw CDP access instead of a limited
shell command set.

website/src/routes/_index.tsx

@@ -374,6 +374,21 @@ export default function IndexPage() {
           ]}
         />
 
+        <ComparisonTable
+          title='vs Playwright CLI'
+          headers={['', 'Playwright CLI', 'Playwriter']}
+          rows={[
+            ['Browser', 'Spawns new browser', 'Uses your Chrome'],
+            ['Login state', 'Fresh', 'Already logged in'],
+            ['Extensions', 'None', 'Your existing ones'],
+            ['Captchas', 'Always blocked', 'Bypass (disconnect extension)'],
+            ['Collaboration', 'Separate window', 'Same browser as user'],
+            ['Capabilities', 'Limited command set', 'Anything Playwright can do'],
+            ['Raw CDP access', 'No', 'Yes'],
+            ['Video recording', 'File-based tracing', 'Native tab capture (30\u201360fps)'],
+          ]}
+        />
+
         <ComparisonTable
           title='vs BrowserMCP'
           headers={['', 'BrowserMCP', 'Playwriter']}