Fix form submission staying in draft status

When no active approval workflow exists, ApprovalService::submit() was
silently returning, leaving the request in Draft while showing a false
success message. Now throws a RuntimeException as a safety net, and the
Livewire component guards before creating any records and shows a clear
error to the user.

resources/views/livewire/travel-request/create.blade.php

@@ -92,7 +92,6 @@ new #[Layout('components.layouts.app')] class extends Component {
     public function saveDraft(): void
     {
         $this->saveRequest(submit: false);
-        session()->flash('success', 'Draft saved successfully.');
     }
 
     public function submit(): void
@@ -102,6 +101,12 @@ new #[Layout('components.layouts.app')] class extends Component {
 
     private function saveRequest(bool $submit): void
     {
+        if ($submit && ! ApprovalWorkflow::where('is_active', true)->exists()) {
+            $this->addError('workflow', 'No active approval workflow is configured. Please contact an administrator.');
+
+            return;
+        }
+
         $this->validate([
             'emergencyFullName' => ['required', 'string', 'max:255'],
             'emergencyPhone' => ['required', 'string', 'max:50'],
@@ -182,6 +187,8 @@ new #[Layout('components.layouts.app')] class extends Component {
         if ($submit) {
             app(ApprovalService::class)->submit($travelRequest);
             session()->flash('success', 'Travel request submitted for approval.');
+        } else {
+            session()->flash('success', 'Draft saved successfully.');
         }
 
         $this->redirect(route('travel-requests.show', $travelRequest), navigate: true);
@@ -209,6 +216,10 @@ new #[Layout('components.layouts.app')] class extends Component {
         </div>
     @endif
 
+    @error('workflow')
+        <div class="alert alert-danger">{{ $message }}</div>
+    @enderror
+
     <form wire:submit.prevent>
 
         {{-- Applicant Details --}}