update controllers logic

app/Http/Controllers/Api/System/AccessDeniedController.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Http\Controllers\Api\System;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\JsonResponse;
+
+class AccessDeniedController extends Controller
+{
+    /** CI route: GET /access_denied */
+    public function accessDenied(): JsonResponse
+    {
+        return response()->json([
+            'status' => false,
+            'error' => 'forbidden',
+            'message' => 'Access denied.',
+        ], 403);
+    }
+}

app/Http/Controllers/Api/System/DashboardController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Http\Resources\System\DashboardRouteResource;
 use App\Services\Dashboard\DashboardRouteService;
 use Illuminate\Http\JsonResponse;

app/Http/Controllers/Api/System/DashboardRedirectController.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Controllers\Api\System;
+
+use App\Http\Controllers\Controller;
+use App\Services\ApplicationUrlService;
+use App\Services\Dashboard\DashboardRouteService;
+use Illuminate\Http\RedirectResponse;
+
+/**
+ * Redirect /dashboard by role priority (web session).
+ */
+class DashboardRedirectController extends Controller
+{
+    public function __construct(
+        private DashboardRouteService $service,
+        private ApplicationUrlService $urls,
+    ) {
+    }
+
+    public function dashboard(): RedirectResponse
+    {
+        $user = auth()->user();
+        if (!$user) {
+            return redirect()->guest($this->urls->webLoginUrl());
+        }
+
+        $payload = $this->service->resolveForUser($user);
+
+        return redirect()->to($payload['route']);
+    }
+}

app/Http/Controllers/Api/System/DatabaseHealthController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Services\System\DatabaseHealthService;
 use Illuminate\Http\JsonResponse;
 use Symfony\Component\HttpFoundation\Response;

app/Http/Controllers/Api/System/HealthController.php

@@ -2,8 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
-use App\Http\Resources\System\HealthStatusResource;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Services\System\HealthCheckService;
 use Illuminate\Http\JsonResponse;
 use Symfony\Component\HttpFoundation\Response;
@@ -20,8 +19,7 @@ class HealthController extends BaseApiController
         $payload = $this->service->check();
         $status = $payload['ok'] ? Response::HTTP_OK : Response::HTTP_SERVICE_UNAVAILABLE;
 
-        return $this->success([
-            'health' => new HealthStatusResource($payload),
-        ], 'Health check.', $status);
+        // CodeIgniter admin/API health returns a flat JSON body (no Laravel success envelope).
+        return response()->json($payload, $status);
     }
 }

app/Http/Controllers/Api/System/NavBuilderController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Http\Requests\System\NavItemReorderRequest;
 use App\Http\Requests\System\NavItemStoreRequest;
 use App\Http\Resources\System\NavBuilderDataResource;

app/Http/Controllers/Api/System/SchoolIdController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Http\Requests\SchoolIds\SchoolIdAssignRequest;
 use App\Http\Resources\SchoolIds\SchoolIdResource;
 use App\Services\SchoolIds\SchoolIdAssignmentService;

app/Http/Controllers/Api/System/SemesterRangeController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers\Api\System;
 
-use App\Http\Controllers\Api\BaseApiController;
+use App\Http\Controllers\Api\Core\BaseApiController;
 use App\Http\Requests\Semesters\SchoolYearRangeRequest;
 use App\Http\Requests\Semesters\SemesterNormalizeRequest;
 use App\Http\Requests\Semesters\SemesterRangeRequest;

app/Http/Controllers/Api/System/StatsController.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Controllers\Api\System;
+
+use App\Http\Controllers\Api\Core\BaseApiController;
+use App\Models\Stats;
+use Symfony\Component\HttpFoundation\Response;
+
+class StatsController extends BaseApiController
+{
+    protected Stats $stats;
+
+    public function __construct()
+    {
+        parent::__construct();
+        $this->stats = model(Stats::class);
+    }
+
+    public function index()
+    {
+        try {
+            $stats = $this->stats->findAll();
+            return $this->success($stats, 'Statistics retrieved successfully');
+        } catch (\Throwable $e) {
+            log_message('error', 'Stats retrieval error: ' . $e->getMessage());
+            return $this->respondError('Failed to retrieve statistics', Response::HTTP_INTERNAL_SERVER_ERROR);
+        }
+    }
+}