Net buy/sell flow by trader cohort on a Robinhood Chain token (PRO+)

Splits a token's trade flow into mutually-exclusive trader cohorts over a window, so you can see who is accumulating and who is distributing.

Sign convention: net_eth = sell − buy. Positive means the cohort distributed (took ETH out); negative means it accumulated. Cohorts are assigned by a priority ladder and each trader lands in exactly one: kol → bot → dump_cluster → early_buyer → unprofiled → smart_money → retail.

smart_money is derived (win-rate ≥ 0.5 and net positive across all tokens), not a stored label. unprofiled is a real answer, not a gap — the trader has not met the reputation matview's thresholds. There is deliberately no fresh_wallet cohort: Robinhood Chain has no wallet-level first-seen, so it cannot be computed honestly.