fix: fetch all Hyperliquid fills — UserFillsByTime is capped at 100

Root cause of the dashboard over-reporting profit while the account lost
money: the fill sync used UserFillsByTime, which hard-caps at 100 fills per
response. At 20x/4-position frequency the account does >100 fills/24h, so
~20% of fills were silently dropped — and the dropped ones skewed toward
losers, inflating recorded PnL and under-counting fees. Verified: over a 46h
window the DB showed net +$39 while Hyperliquid official was -$18.6, and the
equity drop ($176 -> $156) confirmed the loss.

Switch GetTrades to UserFills (returns up to 2000 recent fills), filtering to
startTime client-side, and widen the sync lookback 24h -> 7d so gaps
backfill. Verified live: a sync now pulls 675 fills where it previously
always received exactly 100.

Note: this stops future drift; already-corrupted historical position rows are
not retroactively rebuilt (dedup blocks re-processing). Account equity remains
the authoritative scoreboard.

trader/hyperliquid/order_sync.go

@@ -20,13 +20,16 @@ func (t *HyperliquidTrader) SyncOrdersFromHyperliquid(traderID string, exchangeI
 		return fmt.Errorf("store is nil")
 	}
 
-	// Get recent trades (last 24 hours)
-	startTime := time.Now().Add(-24 * time.Hour)
+	// Look back 7 days. GetTrades now pulls up to 2000 recent fills (UserFills)
+	// and filters to this window, so a wide lookback backfills any fills missed
+	// during past outages/gaps without dropping recent ones. Dedup by trade ID
+	// keeps re-processing idempotent.
+	startTime := time.Now().Add(-7 * 24 * time.Hour)
 
 	logger.Infof("🔄 Syncing Hyperliquid trades from: %s", startTime.Format(time.RFC3339))
 
 	// Use GetTrades method to fetch trade records
-	trades, err := t.GetTrades(startTime, 1000)
+	trades, err := t.GetTrades(startTime, 2000)
 	if err != nil {
 		return fmt.Errorf("failed to get trades: %w", err)
 	}

trader/hyperliquid/trader_account.go

@@ -11,6 +11,8 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
+	hl "github.com/sonirico/go-hyperliquid"
 )
 
 // GetBalance gets account balance
@@ -548,15 +550,23 @@ func (t *HyperliquidTrader) GetClosedPnL(startTime time.Time, limit int) ([]type
 
 // GetTrades retrieves trade history from Hyperliquid
 func (t *HyperliquidTrader) GetTrades(startTime time.Time, limit int) ([]types.TradeRecord, error) {
-	// Use UserFillsByTime API
+	// Use UserFills (returns up to 2000 recent fills) rather than
+	// UserFillsByTime, which is hard-capped at 100 fills per response. At
+	// this trading frequency the account exceeds 100 fills/24h, so
+	// UserFillsByTime silently dropped ~20% of fills — skewing recorded PnL
+	// and fees away from the exchange truth. 2000 recent fills covers many
+	// days of history; we filter to startTime client-side.
 	startTimeMs := startTime.UnixMilli()
-	fills, err := t.exchange.Info().UserFillsByTime(t.ctx, t.walletAddr, startTimeMs, nil, nil)
+	fills, err := t.exchange.Info().UserFills(t.ctx, hl.UserFillsParams{Address: t.walletAddr})
 	if err != nil {
 		return nil, fmt.Errorf("failed to get user fills: %w", err)
 	}
 
 	var trades []types.TradeRecord
 	for _, fill := range fills {
+		if fill.Time < startTimeMs {
+			continue
+		}
 		price, _ := strconv.ParseFloat(fill.Price, 64)
 		qty, _ := strconv.ParseFloat(fill.Size, 64)
 		fee, _ := strconv.ParseFloat(fill.Fee, 64)