Add opt-in update checker with admin notifications

src/main/java/com/yourorg/servershop/ServerShopPlugin.java

@@ -7,6 +7,7 @@
 import com.yourorg.servershop.weekly.*;
 import com.yourorg.servershop.dynamic.*;
 import com.yourorg.servershop.config.*;
+import com.yourorg.servershop.util.UpdateChecker;
 import net.milkbowl.vault.economy.Economy;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
@@ -50,6 +51,7 @@ public final class ServerShopPlugin extends JavaPlugin {
         getCommand("shoplog").setExecutor(new ShopLogCommand(this));
         getCommand("weeklyshop").setExecutor(new WeeklyShopCommand(this));
         getLogger().info("DynamicServerShop enabled (Importer + Admin + Category multipliers + Fuzzy Search).");
+        if (getConfig().getBoolean("checkUpdates", false)) UpdateChecker.check(this);
     }
 
     @Override public void onDisable() {

src/main/java/com/yourorg/servershop/util/UpdateChecker.java

@@ -0,0 +1,55 @@
+package com.yourorg.servershop.util;
+
+import com.yourorg.servershop.ServerShopPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+
+public final class UpdateChecker {
+
+    private static final String API_URL = "https://api.github.com/repos/yourorg/ShopMC/releases/latest";
+    private static final String RELEASES_URL = "https://github.com/yourorg/ShopMC/releases";
+
+    private UpdateChecker() {}
+
+    public static void check(ServerShopPlugin plugin) {
+        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+            try {
+                HttpURLConnection conn = (HttpURLConnection) new URL(API_URL).openConnection();
+                conn.setConnectTimeout(5000);
+                conn.setReadTimeout(5000);
+                conn.setRequestProperty("Accept", "application/vnd.github.v3+json");
+                try (InputStream in = conn.getInputStream()) {
+                    String body = new String(in.readAllBytes(), StandardCharsets.UTF_8);
+                    String latest = parseTag(body);
+                    String current = plugin.getDescription().getVersion();
+                    if (latest != null && !latest.equalsIgnoreCase(current)) {
+                        String msg = plugin.prefixed(ChatColor.YELLOW + "A new version (" + latest + ") is available: " + RELEASES_URL);
+                        plugin.getServer().getConsoleSender().sendMessage(msg);
+                        for (Player p : plugin.getServer().getOnlinePlayers()) {
+                            if (p.hasPermission("servershop.admin")) p.sendMessage(msg);
+                        }
+                    }
+                }
+            } catch (Exception e) {
+                plugin.getLogger().fine("Update check failed: " + e.getMessage());
+            }
+        });
+    }
+
+    private static String parseTag(String json) {
+        int idx = json.indexOf("\"tag_name\"");
+        if (idx == -1) return null;
+        int start = json.indexOf('"', idx + 10);
+        if (start == -1) return null;
+        int end = json.indexOf('"', start + 1);
+        if (end == -1) return null;
+        return json.substring(start + 1, end);
+    }
+}
+

src/main/resources/config.yml

@@ -1,3 +1,4 @@
+checkUpdates: false  # Check for plugin updates on startup
 messages:
   prefix: '&6[Shop] &7'
 weekly: