feat: add system configuration (A-03) — map center, zoom, radius min/max

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Http/Controllers/SettingController.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\ActivityLog;
+use App\Models\Setting;
+use Illuminate\Http\Request;
+
+class SettingController extends Controller
+{
+    public function index()
+    {
+        return response()->json(Setting::orderBy('id')->get(['key', 'value', 'label']));
+    }
+
+    public function update(Request $request, string $key)
+    {
+        $setting = Setting::where('key', $key)->firstOrFail();
+
+        $request->validate(['value' => 'required|string|max:255']);
+
+        Setting::set($key, $request->value);
+
+        ActivityLog::record('update', "Mengubah konfigurasi: {$setting->label} → {$request->value}", 'setting', $key);
+
+        return response()->json(['success' => true]);
+    }
+}

app/Models/Setting.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Cache;
+
+class Setting extends Model
+{
+    protected $fillable = ['key', 'value', 'label'];
+
+    public static function getAll(): array
+    {
+        return Cache::remember('app_settings', 300, function () {
+            return static::pluck('value', 'key')->toArray();
+        });
+    }
+
+    public static function get(string $key, mixed $default = null): mixed
+    {
+        return static::getAll()[$key] ?? $default;
+    }
+
+    public static function set(string $key, string $value): void
+    {
+        static::where('key', $key)->update(['value' => $value]);
+        Cache::forget('app_settings');
+    }
+}

app/Providers/AppServiceProvider.php

@@ -2,23 +2,22 @@
 
 namespace App\Providers;
 
+use App\Models\Setting;
+use Illuminate\Support\Facades\View;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
 {
-    /**
-     * Register any application services.
-     */
-    public function register(): void
-    {
-        //
-    }
+    public function register(): void {}
 
-    /**
-     * Bootstrap any application services.
-     */
     public function boot(): void
     {
-        //
+        View::composer('*', function ($view) {
+            try {
+                $view->with('appSettings', Setting::getAll());
+            } catch (\Throwable) {
+                $view->with('appSettings', []);
+            }
+        });
     }
 }