refactor: use forceCreate() for internal model creation

Replace create() with forceCreate() across internal model creation operations to bypass mass assignment protection. This is appropriate for internal code that constructs complete model state without user input.

Add InternalModelCreationMassAssignmentTest to ensure internal model creation behavior is properly tested. Optimize imports by using shortened Livewire attribute references and removing unused imports.

app/Http/Controllers/Api/ProjectController.php

@@ -5,6 +5,7 @@ namespace App\Http\Controllers\Api;
 use App\Http\Controllers\Controller;
 use App\Models\Project;
 use App\Support\ValidationPatterns;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Validator;
 use OpenApi\Attributes as OA;
@@ -234,7 +235,7 @@ class ProjectController extends Controller
         }
 
         $return = validateIncomingRequest($request);
-        if ($return instanceof \Illuminate\Http\JsonResponse) {
+        if ($return instanceof JsonResponse) {
             return $return;
         }
         $validator = Validator::make($request->all(), [
@@ -257,7 +258,7 @@ class ProjectController extends Controller
             ], 422);
         }
 
-        $project = Project::create([
+        $project = Project::forceCreate([
             'name' => $request->name,
             'description' => $request->description,
             'team_id' => $teamId,
@@ -347,7 +348,7 @@ class ProjectController extends Controller
         }
 
         $return = validateIncomingRequest($request);
-        if ($return instanceof \Illuminate\Http\JsonResponse) {
+        if ($return instanceof JsonResponse) {
             return $return;
         }
         $validator = Validator::make($request->all(), [
@@ -600,7 +601,7 @@ class ProjectController extends Controller
         }
 
         $return = validateIncomingRequest($request);
-        if ($return instanceof \Illuminate\Http\JsonResponse) {
+        if ($return instanceof JsonResponse) {
             return $return;
         }
         $validator = Validator::make($request->all(), [