## 1. Wallet Construction Validation

- [x] 1.1 Validate the wallet address, signer key name, and blockchain dependency before invoking `jup`.
- [x] 1.2 Execute `jup --version` during construction and fail unless it reports exactly `0.10.1`.
- [x] 1.3 Decode `jup -f json keys list`, require the configured signer, and require its public address to match the wallet address.
- [x] 1.4 Report process, version, key, and address failures without exposing private key data, and preserve interruption status.
- [x] 1.5 Retain signer-address validation in the transaction-signing response flow.

## 2. Verification

- [x] 2.1 Compile main and test source sets and run the existing test suite without adding or modifying automated tests.
- [x] 2.2 Run strict OpenSpec validation and `git diff --check`.
- [x] 2.3 Review the implementation and artifacts for exact-version failure, signer identity validation, safe diagnostics, and no generated-source edits.