fix: make project template inheritance granular and safe

app/Actions/Projects/UpdateProjectTemplateLink.php

@@ -10,23 +10,39 @@ class UpdateProjectTemplateLink
 {
     public function __construct(
         private readonly DuplicateProjectConfiguration $duplicateProjectConfiguration,
+        private readonly ProjectTemplateOverrideManager $projectTemplateOverrideManager,
     ) {}
 
     public function switch(Project $project, ProjectTemplate $template): void
     {
         DB::transaction(function () use ($project, $template): void {
+            $project = Project::query()->whereKey($project->id)->lockForUpdate()->firstOrFail();
+            $configuration = $this->duplicateProjectConfiguration->normalizeConfiguration(
+                $template->configuration_snapshot ?? [],
+            );
+            $localAreas = array_values(array_diff(
+                DuplicateProjectConfiguration::copyableAreas(),
+                array_keys($configuration),
+            ));
+
             $project->forceFill([
                 'project_template_id' => $template->id,
-            ])->save();
+                'template_overrides' => $localAreas,
+            ])->saveQuietly();
 
-            $this->duplicateProjectConfiguration->apply(
+            $blockedAreas = $this->duplicateProjectConfiguration->apply($project, $configuration);
+            $this->projectTemplateOverrideManager->clear(
                 $project->fresh(),
-                $template->configuration_snapshot ?? [],
+                array_values(array_diff(array_keys($configuration), $blockedAreas)),
             );
         });
     }
 
-    public function reset(Project $project): void
+    /**
+     * @param  list<string>  $areas
+     * @param  array<int|string, int|string>  $statusReplacements
+     */
+    public function reset(Project $project, array $areas, array $statusReplacements = []): void
     {
         $template = $project->projectTemplate;
 
@@ -34,10 +50,19 @@ class UpdateProjectTemplateLink
             return;
         }
 
-        DB::transaction(function () use ($project, $template): void {
-            $this->duplicateProjectConfiguration->apply(
-                $project->fresh(),
+        DB::transaction(function () use ($project, $template, $areas, $statusReplacements): void {
+            $project = Project::query()->whereKey($project->id)->lockForUpdate()->firstOrFail();
+            $configuration = collect($this->duplicateProjectConfiguration->normalizeConfiguration(
                 $template->configuration_snapshot ?? [],
+            ))->only($areas)->all();
+            $blockedAreas = $this->duplicateProjectConfiguration->apply(
+                $project,
+                $configuration,
+                $statusReplacements,
+            );
+            $this->projectTemplateOverrideManager->clear(
+                $project->fresh(),
+                array_values(array_diff(array_keys($configuration), $blockedAreas)),
             );
         });
     }