fix: implementasi FilamentUser interface agar panel bisa diakses di production

- Tambah FilamentUser interface di User model
- Tambah canAccessPanel() method
- Tambah VoteObserver: broadcast notifikasi ke semua user saat vote baru
- Tambah NotificationService::toAll()
- Fix Vote model: auto-fill created_by via booted()
- Fix CashRecordObserver: fallback created_by untuk Vote

app/Models/User.php

@@ -3,6 +3,8 @@
 namespace App\Models;
 
 use Database\Factories\UserFactory;
+use Filament\Models\Contracts\FilamentUser;
+use Filament\Panel;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -12,7 +14,7 @@ use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 use Spatie\Permission\Traits\HasRoles;
 
-class User extends Authenticatable
+class User extends Authenticatable implements FilamentUser
 {
     /** @use HasFactory<UserFactory> */
     use HasFactory, Notifiable, HasRoles;
@@ -51,6 +53,11 @@ class User extends Authenticatable
         return $this->hasMany(CashRecord::class, 'created_by');
     }
 
+    public function canAccessPanel(Panel $panel): bool
+    {
+        return true;
+    }
+
     public function canImpersonate(): bool
     {
         return $this->hasRole('super_admin');

app/Models/Vote.php

@@ -17,6 +17,13 @@ class Vote extends Model
         'deadline' => 'datetime',
     ];
 
+    protected static function booted(): void
+    {
+        static::creating(function (Vote $vote) {
+            $vote->created_by ??= auth()->id();
+        });
+    }
+
     public function creator(): BelongsTo
     {
         return $this->belongsTo(User::class, 'created_by');