chore: update publisher to evandrodevbr and consolidate icon references

- Change author from Draculabo to evandrodevbr in package.json
- Update GitHub publisher config in forge.config.ts (owner/repo/iconUrl)
- Add favicon link in index.html pointing to src/assets/icon.png
- Ensure all app icon references use images/icon.* consistently

index.html

@@ -3,6 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <title>Gemini Nexus</title>
+    <link rel="icon" type="image/png" href="/src/assets/icon.png" />
     <meta http-equiv="Content-Security-Policy" content="script-src 'self';" />
     <link rel="stylesheet" href="/src/styles/global.css" />
   </head>