Write a stranger's guide to the live Time Lock launch (launch 113, this commit) and deliver it as the named output artifacts/SEPOLIA-GUIDE.md. Documentation only: do not change src/, test/, foundry.toml or lib/. README.md already covers build, test, the contract rules and custody assumptions; link to it for those instead of repeating them, and add what is missing: the live deployment and how to use it.

Facts (verified on Sepolia 2026-09-27; all deployed by the IdentityMD launch factory in transaction 0xb504e6cfa47c92ac913bdbbf172680fc2ab5df38865fe94e183bfc1b827383b2, block 11761675): TimeLockToken (LOCK, 18 decimals, totalSupply 1,000,000,000 × 10^18) at 0x1befeab42d891b69441405a676de77565619e084; TimeLockBank at 0x4e0aa49ef9691c8f929daf94562681ac79108a39 with token() = the LOCK address and maxLockSeconds() = 31,536,000; the factory's reward MerkleDistributor at 0x8db9c22d47cbfe099aa5a0d91c7e6ca7e2a7c30a, which is not part of this repository (say so). On that date totalLocked() was 0 and nextLockId() was 1: nobody had used the bank yet. LOCK trades against Sepolia ETH in a hookless Uniswap v4 pool (fee 3000, tick spacing 60) on Sepolia's PoolManager 0xE03A1074c86CFeDd5C142C4F04F1a1536e203543.

The guide contains: what the two contracts do, in five sentences; an address table with Sepolia Etherscan links; how to get test LOCK (swap Sepolia ETH on that pool with any v4-capable interface, or receive it from a holder — promise no faucet); a cast walk-through against the live addresses using a keystore account (--account), never a pasted private key: approve, deposit(amount, unlockAt) with unlockAt computed from date +%s and kept within now + 31,536,000 seconds, lock(id), locksOf(address), extend, withdraw, each with the exact custom error you get when it is used wrong (UnlockNotFuture, LockTooLong, StillLocked, NotLockOwner, AlreadyWithdrawn, MustExtend, UnknownLock, ZeroAmount); reading Deposited, Extended and Withdrawn with cast logs from block 11761675; the trust assumptions in plain words (no admin, no early exit, lost keys lose the lock, donations are stranded, time is the chain's timestamp); and a line that everything is on the Sepolia test network with no monetary value. Check every function, event and error name against src/ before writing it.