fix(KAN-14): preserve template inheritance and project data

app/Models/Concerns/SyncsProjectTemplateOwnership.php

@@ -5,11 +5,44 @@ namespace App\Models\Concerns;
 use App\Models\Project;
 use App\Models\ProjectTemplate;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Str;
 
 trait SyncsProjectTemplateOwnership
 {
+    /** @param array<string, mixed> $options */
+    public function save(array $options = []): bool
+    {
+        return DB::transaction(function () use ($options): bool {
+            $this->syncProjectTemplateOwnership();
+            if ($this->getAttribute('project_id') !== null) {
+                $project = Project::query()->whereKey($this->getAttribute('project_id'))->lockForUpdate()->first();
+                if ($project?->project_template_id !== null) {
+                    $this->setAttribute('project_template_id', $project->project_template_id);
+                }
+            }
+
+            return parent::save($options);
+        }, 3);
+    }
+
+    public function delete(): ?bool
+    {
+        return DB::transaction(function (): ?bool {
+            if ($this->getAttribute('project_id') !== null) {
+                Project::query()->whereKey($this->getAttribute('project_id'))->lockForUpdate()->first();
+            }
+
+            return parent::delete();
+        }, 3);
+    }
+
     protected function syncProjectTemplateOwnership(): void
     {
+        if ($this->getAttribute('configuration_key') === null) {
+            $this->setAttribute('configuration_key', (string) Str::uuid());
+        }
+
         $projectTemplateId = $this->getAttribute('project_template_id');
         $projectId = $this->getAttribute('project_id');