LendVault is a collateralized lending protocol on the Sepolia testnet: you lock ETH, borrow the vault-issued USDx stablecoin against it, and keep your position healthy while interest accrues — or earn a bonus liquidating positions that break down.

1. Connect your wallet — press Connect Wallet (top-right); the chain badge shows Sepolia, the network this dApp is configured for.
2. Supply collateral — enter an amount in the Supply panel and press Deposit; the vault locks your ETH.
3. Borrow stablecoins — enter an amount in the Borrow / Repay panel and press Borrow; you receive USDx, capped at 66% of your collateral (LTV).
4. Stay healthy — watch the health-factor arc in “Your position”; press Repay (USDx) or Withdraw (ETH) to keep health above 1.0.
5. Earn by liquidating — if a position falls below health 1.0, press Liquidate a position, paste the borrower’s address, set a repay amount and press Seize collateral to claim their ETH at a 10% discount.

1. LendVault.deposit() — the LendVault contract locks your ETH in its collateral mapping; every ETH/token movement runs under ReentrancyGuard.
2. LendVault.borrow() — interest is accrued first, then the vault checks the 66% LTV limit before authorizing new USDx against your collateral.
3. MockStable.mint() — only the vault may mint: MockStable creates USDx via its onlyVault modifier, the same way DAI is born from collateral.
4. LendVault._accrue() / currentDebt — debt compounds every second at 10% APR (ratePerSecond); as interest grows, healthFactor sinks and the position becomes liquidatable below 1.0 (80% threshold).
5. LendVault.liquidate() — a liquidator repays up to 50% of the bad debt (close factor); MockStable.burn() destroys the repaid USDx and the liquidator seizes ETH worth 110% of the repayment.