feat: add TextWidget

add TextWidget CRUD api

add basic tests for API

app/Http/Controllers/TextWidgetController.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\TextWidget;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
+
+class TextWidgetController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     */
+    public function index()
+    {
+        return TextWidget::all();
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(Request $request)
+    {
+        $user = Auth::user();
+
+        if (! $user || $user->email !== config('app.admin_email')) {
+            return response()->json(['message' => 'Forbidden'], 403);
+        }
+
+        $validated = $request->validate([
+            'title' => 'required|string|max:255',
+            'description' => 'nullable|string',
+            'content' => 'required|string',
+        ]);
+
+        return TextWidget::create($validated);
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(TextWidget $textWidget)
+    {
+        return $textWidget;
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(Request $request, TextWidget $textWidget)
+    {
+        $validated = $request->validate([
+            'title' => 'sometimes|required|string|max:255',
+            'description' => 'sometimes|nullable|string',
+            'content' => 'sometimes|required|string',
+        ]);
+
+        $textWidget->update($validated);
+
+        return $textWidget;
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(TextWidget $textWidget)
+    {
+        $textWidget->delete();
+
+        return response()->noContent();
+    }
+}