Move opengraph.png to public folder for correct static asset serving

- Moved opengraph.png from src/ to public/ directory
- This ensures the file is accessible at https://with.dwindi.com/opengraph.png
- Vite serves files in public/ at root level without path prefix

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

index.html

@@ -11,15 +11,15 @@
     <meta property="og:title" content="WithDwindi" />
     <meta property="og:description" content="Learn. Grow. Succeed." />
     <meta property="og:type" content="website" />
-    <meta property="og:image" content="https://lovable.backoffice.biz.id/opengraph.png" />
+    <meta property="og:image" content="https://with.dwindi.com/opengraph.png" />
     <meta property="og:image:width" content="1200" />
     <meta property="og:image:height" content="629" />
     <meta property="og:image:alt" content="WithDwindi" />
-    <meta property="og:url" content="https://lovable.backoffice.biz.id" />
+    <meta property="og:url" content="https://with.dwindi.com" />
 
     <meta name="twitter:card" content="summary_large_image" />
     <meta name="twitter:site" content="@dwindown" />
-    <meta name="twitter:image" content="https://lovable.backoffice.biz.id/opengraph.png" />
+    <meta name="twitter:image" content="https://with.dwindi.com/opengraph.png" />
     <meta name="twitter:image:alt" content="WithDwindi" />
   </head>