first commit

app/Models/Payment.php

@@ -0,0 +1,20 @@
+<?php
+namespace App\Models;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Payment extends Model
+{
+    use SoftDeletes;
+    protected $fillable = ['contract_id', 'payment_type', 'payment_number', 'bank_name', 'amount', 'due_date', 'status', 'notes'];
+    protected $casts = ['due_date' => 'date'];
+    
+    public function contract() { return $this->belongsTo(Contract::class); }
+    
+    protected static function boot()
+    {
+        parent::boot();
+        static::creating(fn($model) => $model->created_by = auth()->id());
+        static::updating(fn($model) => $model->updated_by = auth()->id());
+    }
+}