20: Add new JupiterPerpsEntryPriceVariableRefresher class

src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsEntryPriceVariableRefresher.tjava

@@ -0,0 +1,24 @@
+package com.r35157.jupiterperpsalarm.impl.ref;
+
+import java.util.Map;
+import java.util.Objects;
+
+public final class JupiterPerpsEntryPriceVariableRefresher {
+
+    public JupiterPerpsEntryPriceVariableRefresher(Map<String, String> variables) {
+        this.variables = Objects.requireNonNull(variables, "variables");
+    }
+
+    public void refresh() {
+        String wallet = variables.get("JUPITER_PERPS_WALLET");
+
+        if (wallet == null || wallet.isBlank()) {
+            System.err.println("Cannot refresh Jupiter Perps entry price variables: JUPITER_PERPS_WALLET is not configured");
+            return;
+        }
+
+        System.out.println("Jupiter Perps entry price variable refresh requested for wallet: " + wallet);
+    }
+
+    private final Map<String, String> variables;
+}