[SIMD-LAUNCH]

Token name: SIMDTEST

Token symbol: SIMDTEST

The token SIMDTEST with symbol SIMDTEST is a 1,000,000,000 token supply (18 decimals), with 90% of the supply added to the liquidity pool paired with IMD; the remaining 10% is reserved for the swarm. The Hook contract acts as the Uniswap v4 hook with the following behavior: on every swap callback, during the first 10 blocks after the pool's initial open block, it applies an anti-snipe fee starting at 30% of the swap amount block 0 and linearly decreasing each block until 0% by block 10. This anti-snipe fee is not burned or sent out but donated back into the in-range pool liquidity via the PoolManager.donate function, increasing the pool's liquidity without affecting the paired currency supply. In addition to the anti-snipe fee, the hook applies a permanent 1% fee on every swap taken from the paired IMD currency amount, which is sent directly to the Vault contract. The vault contract allows holders to stake SIMDTEST tokens; it tracks individual stakes and distributes accumulated IMD fees pro rata based on stake size and staking duration. Holders can stake, unstake, and claim accrued IMD rewards at any time from the vault. Both hook and vault contracts have no owner, are not upgradeable or pausable, and thus no privileged role can alter fees or logic after deployment. Standard token transfers outside of swaps incur no fees. The hook and vault must be thoroughly tested: the hook for correct fee application, linear decay timing, fee donations, and staking fee transfer; the vault for correct reward accounting, staking and unstaking, and claim functionality without token loss. Total hook fees beyond Uniswap's 1.25% pool fee start as high as 31% during initial anti-snipe but rapidly decrease to 1%, which is acceptable for this test preset. This structure ensures fair staking rewards funded by swap activity and protects early liquidity from sniper bots without trapping user funds or limiting token transfers.

Build requirements (mandatory):

• A complete Foundry project at the repository root: foundry.toml with solc 0.8.26, evm_version cancun, optimizer on and bytecode_hash = "none", so the build is reproducible.
• Contracts: SIMDTESTHook, SIMDTESTVault. The hook is the hook of this launch's pool; keep its creation code within the EIP-3860 size limit.
• No selfdestruct and no delegatecall anywhere in runtime code. No proxies, no owner, no upgradeability.