fix(project-form): use $project instead of undefined $projectId in blade

project-form.blade.php referenced $projectId, but the ProjectForm component
exposes $project (the model, null when creating). Caused 'Undefined variable
$projectId' on /projects/{id}/edit. Switched both usages to $project.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

resources/views/livewire/projects/project-form.blade.php

@@ -1,6 +1,6 @@
 <div>
     <div class="max-w-2xl mx-auto p-4">
-        <h1 class="text-2xl font-bold mb-6">{{ $projectId ? __('Edit Project') : __('New Project') }}</h1>
+        <h1 class="text-2xl font-bold mb-6">{{ $project ? __('Edit Project') : __('New Project') }}</h1>
         
         <form wire:submit.prevent="save" class="space-y-6">
             <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
@@ -50,7 +50,7 @@
                     {{ __('Cancel') }}
                 </button>
                 <button type="submit" class="btn btn-primary">
-                    {{ $projectId ? __('Update') : __('Create') }}
+                    {{ $project ? __('Update') : __('Create') }}
                 </button>
             </div>
         </form>