added balance lookup to confirm quantity

bot.py

@@ -107,9 +107,27 @@ def run_cycle(config: Config) -> bool:
             if signal is None:
                 continue
 
+            sell_qty = position.quantity
+            if not config.paper_trading:
+                # Kraken's fill may differ slightly from our stored quantity — sell
+                # whatever we actually hold to avoid "Insufficient funds" errors.
+                try:
+                    balances = client.get_all_balances()
+                    # Derive base asset from pair altname: "PENDLEUSD" -> "PENDLE"
+                    base = position.pair.removesuffix("USD")
+                    actual = balances.get(base, balances.get("X" + base))
+                    if actual is not None and actual < sell_qty:
+                        log.info(
+                            "%s: adjusting sell qty %.8f -> %.8f to match Kraken balance",
+                            position.pair, sell_qty, actual,
+                        )
+                        sell_qty = actual
+                except KrakenError as exc:
+                    log.warning("Could not fetch balances before sell: %s", exc)
+
             try:
                 order_id = client.market_sell(
-                    position.pair, position.quantity, paper=config.paper_trading
+                    position.pair, sell_qty, paper=config.paper_trading
                 )
             except KrakenError as exc:
                 log.error("Sell failed for %s: %s — will retry next run", position.pair, exc)

kraken_client.py

@@ -85,6 +85,11 @@ class KrakenClient:
 
     # ── Private account data ──────────────────────────────────────────────────
 
+    def get_all_balances(self) -> dict[str, float]:
+        """Return all asset balances with non-zero amounts."""
+        raw = self._private("Balance")
+        return {k: float(v) for k, v in raw.items() if float(v) > 0}
+
     def get_usd_balance(self) -> float:
         """Return available USD balance (ZUSD key in Kraken)."""
         balance = self._private("Balance")