fix client file configuration respectedly

README.md

@@ -2,14 +2,16 @@
 
 This branch is Fabric-only and intentionally separates authority:
 
-* `config/item-despawn-timer-server.json` — server gameplay: default despawn time and per-item overrides. `-1` means infinite when enabled.
+* `config/item-despawn-timer-server.json` — **dedicated server only**; server gameplay: default despawn time and per-item overrides. `-1` means infinite when enabled.
-* `config/item-despawn-timer-client.json` — client presentation only: timer/name visibility, heights, threshold and colors.
+* `config/item-despawn-timer-client.json` — **client only**; presentation settings: timer/name visibility, heights, threshold and colors.
+
+Since v0.3.7, a physical client no longer creates `item-despawn-timer-server.json`. The main Fabric initializer also runs on clients, so `ServerConfig` explicitly checks the physical environment before reading/writing its persistent file. Integrated singleplayer uses the built-in server defaults in memory; dedicated servers continue to use the persistent server JSON.
 
 Minecraft 26.2 uses the unobfuscated Mojang/official names and Java 25. This port therefore does not reuse the old Yarn-named common/client GUI classes from 0.2.2. Client rendering lives only in `src/client`, while server/gameplay code lives in `src/main`.
 
 Run `compiler.bat` on Windows or `./compiler.sh` on Linux/macOS. The script checks whether the existing JAR contains the same `mod_version+mc<minecraft_version>` as `gradle.properties`; matching builds offer Push/Recompile/Quit. After a successful build it offers Git push and retries failed pushes in groups of three.
 
-## Commands (v0.3.4)
+## Commands (v0.3.7)
 
 `/idt reload`
 

gradle.properties

@@ -3,6 +3,6 @@ org.gradle.configuration-cache=false
 minecraft_version=26.2
 loader_version=0.19.3
 fabric_version=0.160.0+26.2
-mod_version=0.3.6
+mod_version=0.3.7
 maven_group=whirlfrenzy.itemdespawntimer
 archives_base_name=item-despawn-timer

src/main/java/whirlfrenzy/itemdespawntimer/config/ServerConfig.java

@@ -2,6 +2,7 @@ package whirlfrenzy.itemdespawntimer.config;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import net.fabricmc.api.EnvType;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.world.entity.item.ItemEntity;
@@ -18,6 +19,15 @@ public final class ServerConfig {
     }
     private ServerConfig() {}
     public static void load() {
+        // The common/main initializer also runs in a physical Minecraft client.
+        // Never create or read the server config there: a client installation owns
+        // presentation settings only. Integrated singleplayer uses server defaults
+        // in memory; a dedicated server owns the persistent server config file.
+        if (FabricLoader.getInstance().getEnvironmentType() != EnvType.SERVER) {
+            data = new Data();
+            return;
+        }
+
         Path p = FabricLoader.getInstance().getConfigDir().resolve("item-despawn-timer-server.json");
         try {
             if (Files.exists(p)) { try (Reader r=Files.newBufferedReader(p)) { Data d=GSON.fromJson(r,Data.class); if(d!=null)data=d; } }