Unlock Pulse open dataset v1: token unlock ratings, event study and on-chain checks

Derived data from Unlock Pulse (https://billibo6.github.io/unlockpulse/), a free token-unlock calendar: a size rating of 514 past and upcoming token unlocks (B = tokens unlocked / circulating supply), a 7-day event study of token returns relative to Bitcoin around 304 past unlocks (2023-2026), date checks against project documents, 49 announced unlock schedule changes, per-coin recipient selling habits and on-chain checks of locked-allocation wallets. Unlock schedules from CoinMarketCap and DefiLlama are not included; only our derived ratings and measurements. Method: https://billibo6.github.io/unlockpulse/method.html