feat(wallets): implement wallet and transaction management with associated models, policies, and resources

app/Models/Wallet.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable(['user_id', 'balance', 'is_active'])]
+class Wallet extends Model
+{
+    /**
+     * @return BelongsTo<User, $this>
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * @return HasMany<WalletTransaction, $this>
+     */
+    public function transactions(): HasMany
+    {
+        return $this->hasMany(WalletTransaction::class)->latest();
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'balance' => 'integer',
+            'is_active' => 'boolean',
+        ];
+    }
+}