Logging (#30)

* Added loggin for the onboarding flow.

* Logging for potential errors

* feat: enhance onboarding error logging with server-side capture

* Update app/(onboarding)/onboarding/page.tsx

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

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Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

components/onboarding/Step6ConnectBank.tsx

@@ -68,7 +68,11 @@ export default function Step6ConnectBank({
           </CardDescription>
         </CardHeader>
         <CardContent>
-          <form onSubmit={handleSubmit(onManualSubmit)} className="space-y-4">
+          <form onSubmit={handleSubmit(onManualSubmit, (errs) => {
+            const fields = Object.keys(errs).join(', ')
+            console.error('[onboarding] step 5 validation failed:', fields, errs)
+            fetch('/api/log', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ message: 'step 5 validation failed', extra: { fields } }) }).catch(() => {})
+          })} className="space-y-4">
             <div className="space-y-2">
               <Label htmlFor="bank_name">Bank</Label>
               <Input