Solidity, Hyperledger & Wallet Tests

I am building a blockchain-based solution and need help on three core tracks that run in parallel: writing secure Solidity smart contracts, wiring those contracts into a Hyperledger network, and stress-testing the end-user wallet experience.

Here’s what I need from you:

• Smart contract layer: write, document and thoroughly unit-test Solidity contracts that follow current best practices (OpenZeppelin, Hardhat, Foundry or comparable frameworks).
• Hyperledger bridge: create the integration logic so on-chain events are reliably reflected inside a Hyperledger environment. I am open to Fabric, Sawtooth or another flavor you feel fits best; advise me on the trade-offs, then implement.
• Wallet quality assurance: script automated tests that cover deployment, signing, gas calculations and edge-case failures across common wallets such as MetaMask and WalletConnect clients.

Acceptance criteria
• Contracts compile without warnings, achieve 100 % line coverage on unit tests and pass MythX/Slither scans.
• Hyperledger component syncs state changes in under two seconds and logs any reconciliation errors.
• Wallet workflows succeed on at least three Chromium-based browsers and one mobile wrapper.

Please outline the toolchain you prefer, estimated milestones and any previous projects where you combined EVM contracts with Hyperledger. I am ready to start as soon as we agree on the approach.