Refactor host URL retrieval in Open Graph API routes for improved error handling

Co-authored-by: Copilot <copilot@github.com>

src/app/api/og/fund/[slug]/route.tsx

@@ -55,7 +55,8 @@ export async function GET(
     style: 'currency', currency: 'USD', notation: Math.abs(n) >= 10000 ? 'compact' : 'standard', maximumFractionDigits: 2,
   }).format(n)
 
-  const host = new URL(process.env.NEXTAUTH_URL ?? 'http://localhost:3000').host
+  const rawUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+  const host = (() => { try { return new URL(rawUrl).host } catch { return rawUrl } })()
 
   return new ImageResponse(
     (

src/app/api/og/hashtag/[tag]/route.tsx

@@ -65,7 +65,8 @@ export async function GET(
   }).format(price)
 
   const polyline = buildPolyline(prices)
-  const host = new URL(process.env.NEXTAUTH_URL ?? 'http://localhost:3000').host
+  const rawUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+  const host = (() => { try { return new URL(rawUrl).host } catch { return rawUrl } })()
 
   return new ImageResponse(
     (

src/app/api/og/leaderboard/route.tsx

@@ -33,7 +33,8 @@ export async function GET() {
   }).format(n)
 
   const medals = ['🥇', '🥈', '🥉', '4.', '5.']
-  const host = new URL(process.env.NEXTAUTH_URL ?? 'http://localhost:3000').host
+  const rawUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+  const host = (() => { try { return new URL(rawUrl).host } catch { return rawUrl } })()
 
   return new ImageResponse(
     (

src/app/api/og/profile/[username]/route.tsx

@@ -46,7 +46,8 @@ export async function GET(
   }).format(n)
 
   const pnlColor = unrealizedPnl >= 0 ? '#34d399' : '#f87171'
-  const host = new URL(process.env.NEXTAUTH_URL ?? 'http://localhost:3000').host
+  const rawUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+  const host = (() => { try { return new URL(rawUrl).host } catch { return rawUrl } })()
 
   return new ImageResponse(
     (