Poll-based event detection for spot + Jupiter Perps. Pass a watchlist (<=10 tokens, <=10 wallets) and a `since` ISO 8601 timestamp; get alerts fired since then. Token alerts: price spikes/drops, whale inflow/outflow, concentration shifts. Wallet alerts: risk changes, portfolio value moves, position add/remove. Perps alerts per wallet: position add/close, at-risk, liquidation-approaching, pnl-swing. Stateless; the agent owns the `since` cursor.