Add application API and OpenAPI docs

app/Http/Controllers/Api/ProjectBoardController.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Actions\Permissions\PermissionService;
+use App\Actions\Projects\BuildProjectBacklogPayload;
+use App\Actions\Projects\BuildProjectBoardPayload;
+use App\Enums\Permission;
+use App\Models\Project;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class ProjectBoardController extends ApiController
+{
+    public function __construct(
+        private readonly BuildProjectBacklogPayload $buildProjectBacklogPayload,
+        private readonly BuildProjectBoardPayload $buildProjectBoardPayload,
+        private readonly PermissionService $permissionService,
+    ) {}
+
+    public function board(Request $request, Project $project): JsonResponse
+    {
+        $user = $this->authenticatedUser($request);
+
+        abort_unless(
+            $this->permissionService->allows($user, Permission::ProjectRead, $project),
+            403,
+        );
+
+        return response()->json([
+            'data' => $this->buildProjectBoardPayload->handle($project, $user),
+        ]);
+    }
+
+    public function backlog(Request $request, Project $project): JsonResponse
+    {
+        $user = $this->authenticatedUser($request);
+
+        abort_unless(
+            $this->permissionService->allows($user, Permission::ProjectRead, $project),
+            403,
+        );
+
+        return response()->json([
+            'data' => $this->buildProjectBacklogPayload->handle($project, $user),
+        ]);
+    }
+}