Goblin Gold v3: port the gacha to an IMD Uniswap v4 genesis token. GoblinNFT is already deployed on Ethereum at 0xC5d5F314da6d4a433F9BF897a2cC24A537576cB1 from identity-md-launches/launch-1616-goblin-gold-nft-mint commit dbd66796c56c6df8ab9b5d58686b86ef1111ae5d: copy that exact src/GoblinNFT.sol into this repo (deferred revenue until release) and never change it again; every gacha contract uses that address as the NFT.

Genesis token: the project token will be launched later through IMD as univ4_hook, paired with ETH, platform pool fee 12500 and tick spacing 60, constructor placeholders $poolManager, $token, $factory. The paying wallet 0xA7e99BB7155D7477E0C838E201b16E62B9c0b5Ac receives the platform 1% via LaunchFactory.claimFees.

Build:

1. GoldHook (the univ4_hook contract): no owner. Records a TWAP observation ring for the GOLD/ETH pool (cumulative tick per block, observe(secondsAgos)); initialized only by $factory in the launch transaction; rejects other pools. Takes a 1% hook fee in ETH on every swap on top of the platform fee: 50% goes to holders through GoblinNFT 0xC5d5F314da6d4a433F9BF897a2cC24A537576cB1 depositRevenue() (pooled there until NFT release), 50% to the BagGacha reward reserve. Because BagGacha does not exist at token launch, the reserve share accrues in the hook until a one-time permissionless bindGacha(gacha) that accepts only a BagGacha whose creation code hash is pinned in the hook and whose genesis token and NFT match; after binding, anyone can flush. Anti-snipe launch tax on buys: 90% for the first 10 minutes, 50% for 10-20, 25% for 20-30 minutes, then 0, 100% to the gacha reward reserve share; max 0.5 ETH per buy in the first hour. Fees are flushed in batches, never inside the swap path beyond accounting.
2. TwapOracle: two sources. Regular Bags keep canonical Uniswap v3 WETH pools (unchanged rules: 50 ETH per side, both windows). The genesis token is priced only from GoldHook observations with the same min(30m, 4h) windows and a depth check against the v4 pool liquidity.
3. POLManager: add liquidity, buy and burn through the v4 PoolManager (unlock callback) on the GOLD/ETH pool with GoldHook; full range; positions permanently held; no v3 router or position manager.
4. Launch order with no owner custody where possible: launch 1 = token + GoldHook (remainder to the paying wallet, which funds GenesisVault in one public transaction right after launch 2); launch 2 = TwapOracle, GenesisVault, BagGacha, Curator, POLManager with $contract references; then the NFT owner calls setLaunchTargets(POLManager, BagGacha, BagGacha). If a safer ordering without wallet custody is possible on IMD (remainderTo a predictable vault), implement and explain it.
5. Keep everything else from v2: ownerless Curator via the IMD oracle, bounded changes, VRF, free spins only after release, 32 Bags, Genesis schedule and splits.

Write runbook objectives for launch 1 and launch 2 with exact constructor words, using only $poolManager, $token, $factory, $contract:Name placeholders and never IMD protocol addresses as literal words.

Tests: unit, invariant and fork tests (v4 PoolManager on mainnet fork if an archive RPC works); all must pass with FOUNDRY_VIA_IR=false FOUNDRY_BYTECODE_HASH=none. Do not change foundry.toml.