fix: use @At("RETURN") instead of @At("TAIL") in mixins

TAIL only hooks the last return opcode, missing early returns.
This caused server injection and unblocking to be skipped when
servers.dat doesn't exist or when isBlockedServerHostName
returns early.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

mc-1.21.10/src/main/java/net/blockhost/anarchymod/mixin/BlockedServersMixin.java

@@ -10,7 +10,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 @Mixin(BlockedServers.class)
 public class BlockedServersMixin {
 
-    @Inject(method = "isBlockedServerHostName", at = @At("TAIL"), cancellable = true, remap = false)
+    @Inject(method = "isBlockedServerHostName", at = @At("RETURN"), cancellable = true, remap = false)
     public void isBlockedServerHostName(String server, CallbackInfoReturnable<Boolean> cir) {
         boolean contains = Domains.contains(server);
         if (contains) {

mc-1.21.10/src/main/java/net/blockhost/anarchymod/mixin/ServerListMixin.java

@@ -19,7 +19,7 @@ public class ServerListMixin {
     @Final
     private List<ServerData> serverList;
 
-    @Inject(method = "load", at = @At("TAIL"))
+    @Inject(method = "load", at = @At("RETURN"))
     public void afterLoad(CallbackInfo ci) {
         if (serverList.stream().noneMatch(data -> Domains.contains(data.ip))) {
             serverList.addFirst(new ServerData("6b6t", "6b6t.org", ServerData.Type.OTHER));

mc-1.21.11/src/main/java/net/blockhost/anarchymod/mixin/BlockedServersMixin.java

@@ -10,7 +10,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 @Mixin(BlockedServers.class)
 public class BlockedServersMixin {
 
-    @Inject(method = "isBlockedServerHostName", at = @At("TAIL"), cancellable = true, remap = false)
+    @Inject(method = "isBlockedServerHostName", at = @At("RETURN"), cancellable = true, remap = false)
     public void isBlockedServerHostName(String server, CallbackInfoReturnable<Boolean> cir) {
         boolean contains = Domains.contains(server);
         if (contains) {

mc-1.21.11/src/main/java/net/blockhost/anarchymod/mixin/ServerListMixin.java

@@ -19,7 +19,7 @@ public class ServerListMixin {
     @Final
     private List<ServerData> serverList;
 
-    @Inject(method = "load", at = @At("TAIL"))
+    @Inject(method = "load", at = @At("RETURN"))
     public void afterLoad(CallbackInfo ci) {
         if (serverList.stream().noneMatch(data -> Domains.contains(data.ip))) {
             serverList.addFirst(new ServerData("6b6t", "6b6t.org", ServerData.Type.OTHER));

mc-1.21.8/src/main/java/net/blockhost/anarchymod/mixin/BlockedServersMixin.java

@@ -10,7 +10,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 @Mixin(BlockedServers.class)
 public class BlockedServersMixin {
 
-    @Inject(method = "isBlockedServerHostName", at = @At("TAIL"), cancellable = true, remap = false)
+    @Inject(method = "isBlockedServerHostName", at = @At("RETURN"), cancellable = true, remap = false)
     public void isBlockedServerHostName(String server, CallbackInfoReturnable<Boolean> cir) {
         boolean contains = Domains.contains(server);
         if (contains) {

mc-1.21.8/src/main/java/net/blockhost/anarchymod/mixin/ServerListMixin.java

@@ -19,7 +19,7 @@ public class ServerListMixin {
     @Final
     private List<ServerData> serverList;
 
-    @Inject(method = "load", at = @At("TAIL"))
+    @Inject(method = "load", at = @At("RETURN"))
     public void afterLoad(CallbackInfo ci) {
         if (serverList.stream().noneMatch(data -> Domains.contains(data.ip))) {
             serverList.addFirst(new ServerData("6b6t", "6b6t.org", ServerData.Type.OTHER));

mc-1.21.9/src/main/java/net/blockhost/anarchymod/mixin/BlockedServersMixin.java

@@ -10,7 +10,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 @Mixin(BlockedServers.class)
 public class BlockedServersMixin {
 
-    @Inject(method = "isBlockedServerHostName", at = @At("TAIL"), cancellable = true, remap = false)
+    @Inject(method = "isBlockedServerHostName", at = @At("RETURN"), cancellable = true, remap = false)
     public void isBlockedServerHostName(String server, CallbackInfoReturnable<Boolean> cir) {
         boolean contains = Domains.contains(server);
         if (contains) {

mc-1.21.9/src/main/java/net/blockhost/anarchymod/mixin/ServerListMixin.java

@@ -19,7 +19,7 @@ public class ServerListMixin {
     @Final
     private List<ServerData> serverList;
 
-    @Inject(method = "load", at = @At("TAIL"))
+    @Inject(method = "load", at = @At("RETURN"))
     public void afterLoad(CallbackInfo ci) {
         if (serverList.stream().noneMatch(data -> Domains.contains(data.ip))) {
             serverList.addFirst(new ServerData("6b6t", "6b6t.org", ServerData.Type.OTHER));