feat: Secure API routes with authentication checks and enhance redirect handling for unauthenticated users.

app/(app)/opportunities/page.tsx

@@ -91,8 +91,18 @@ export default function OpportunitiesPage() {
     }
 
     fetch('/api/opportunities')
-      .then(r => r.json())
-      .then(data => setPlatforms(data.platforms))
+      .then(r => {
+        if (r.redirected) {
+          router.push('/auth?next=/opportunities')
+          return null
+        }
+        return r.json()
+      })
+      .then(data => {
+        if (data) {
+          setPlatforms(data.platforms)
+        }
+      })
   }, [router])
 
   const togglePlatform = (platformId: string) => {
@@ -129,6 +139,11 @@ export default function OpportunitiesPage() {
         body: JSON.stringify({ analysis, config })
       })
 
+      if (response.redirected) {
+        router.push('/auth?next=/opportunities')
+        return
+      }
+
       const data = await response.json()
       
       if (data.success) {