feat: add debug logging and improve proof-of-payment icon styling

Changes:
- Add console.log statements for shareId validation failures in locationActions
- Replace DocumentIcon with TicketIcon for proof-of-payment downloads (consistency)
- Add teal color to all proof-of-payment icons for visual distinction
- Adjust vertical alignment of icons for better visual alignment with text

Debug logging helps troubleshoot:
- shareId extraction failures
- Checksum validation failures
- Location not found errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/ui/BillEditForm.tsx

@@ -253,7 +253,7 @@ export const BillEditForm: FC<BillEditFormProps> = ({ location, bill }) => {
                                                 target="_blank"
                                                 className='text-center w-full max-w-[20rem] text-nowrap truncate inline-block'
                                             >
-                                                <TicketIcon className="h-[1em] w-[1em] text-2xl inline-block mr-1 text-teal-500" />
+                                                <TicketIcon className="h-[1em] w-[1em] text-2xl inline-block mr-1 mt-[-.2em] text-teal-500" />
                                                 {decodeURIComponent(proofOfPayment.fileName)}
                                             </Link>
                                         </div>