Fixed PaymentForm.clean() validation that was preventing payments from
being saved on new orders. The validation required order to exist, but
during creation self.instance.order is None until formset is saved.
Changes:
- Removed hard requirement for order in PaymentForm.clean()
- Wallet balance checks now only run when order exists
- Empty payment forms still allowed (for deletion in formset)
- Basic amount validation maintained
This fixes the issue where payments wouldn't persist when creating
a new order, even though no validation errors were shown to user.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Andrey Smakotin
ffdab80698