fix(og): use .ttf fonts instead of .woff to prevent Satori crash on production

lib/og-helper.tsx

@@ -7,8 +7,8 @@ import { ImageResponse } from 'next/og';
  * Since we are using runtime = 'nodejs', we can read them from the filesystem.
  */
 export async function getOgFonts() {
-  const boldFontPath = join(process.cwd(), 'public/fonts/Inter-Bold.woff');
-  const regularFontPath = join(process.cwd(), 'public/fonts/Inter-Regular.woff');
+  const boldFontPath = join(process.cwd(), 'public/fonts/Inter-Bold.ttf');
+  const regularFontPath = join(process.cwd(), 'public/fonts/Inter-Regular.ttf');
 
   try {
     console.log(`[OG] Loading fonts: bold=${boldFontPath}, regular=${regularFontPath}`);