added leave request, profile and staff members controllers

app/Models/StaffMember.php

@@ -21,9 +21,16 @@ class StaffMember extends Authenticatable
         'password',
     ];
 
+    public function leaveRequests() { 
+        return $this->hasMany(LeaveRequest::class, 'staff_member_id'); 
+    }
+    public function dependents() { 
+        return $this->hasMany(StaffDependent::class, 'staff_id'); 
+    }
+
     // 4. Cast dates correctly
     protected $casts = [
-        'dob' => 'date',
+        // 'dob' => 'date',
         'hire_date' => 'datetime',
         'password' => 'hashed', // Laravel 10+ password casting
     ];