20: Add actual refreshing logic to loop

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

@@ -3,6 +3,7 @@ package com.r35157.jupiterperpsalarm.impl.ref;
 import java.nio.file.*;
 import java.util.Objects;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.FileSystems;
 import java.nio.file.StandardWatchEventKinds;
 import java.nio.file.WatchEvent;
@@ -51,7 +52,15 @@ public final class JupiterPerpsEntryPriceVariableRefreshWatcher {
                         continue;
                     }
 
-                    System.out.println("Refresh trigger file detected");
+                    Path triggerFile = confDirectory.resolve(path);
+
+                    System.out.println("Refresh trigger file detected: " + triggerFile);
+
+                    try {
+                        refresher.refresh();
+                    } finally {
+                        Files.deleteIfExists(triggerFile);
+                    }
                 }
 
                 if (!key.reset()) {