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## PR-Codex overview
This PR updates NFT handling in the wallet and contract UI components. It replaces `BigInt` with `string` for `id` and `supply` fields to prevent serialization errors and improves metadata handling.
### Detailed summary
- Replaced `BigInt` with `string` for `id` and `supply` fields in `WalletNFT` type
- Updated NFT handling in various files to ensure compatibility and prevent serialization errors
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