bfc288d4-3e34-4b8b-8ee7-92a0d1a12933IMD JOB

Build HourlyFeeHook, a simple, creative Uniswap v4 hook: a dynamic-fee hook that charges a different LP fee by UTC hour: a 24-entry fee schedule fixed at construction (in hundredths of a bip, each at most 1%), applied in beforeSwap from block.timestamp. Tests cover the hour boundaries and the schedule bounds. Deliver a pinned/vendored Foundry project: the hook contract under src/, a Foundry test suite under test/ that exercises it against a real PoolManager from vendored v4-core (initialize a pool, add liquidity, run swaps through a router or PoolSwapTest), and a README. Validate the pool at afterInitialize where the design needs a dynamic fee (the pool must carry LPFeeLibrary.DYNAMIC_FEE_FLAG) and revert otherwise. Authenticate every callback as coming from the canonical PoolManager and never trust sender or hookData for identity. Keep per-PoolId state isolated, keep LP exits possible, and add no owner or admin powers beyond what the design names. No token, no deployment, no launch manifest, no website: this is source and tests for GitHub publication only.