feat: show Update on home button when client pack is behind

Compare the installed server-manifest version and file hashes with fileApi on the home page, and switch the Start button to Update when a differential sync is needed. Also persist the remote pack version after completion.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/publish-tdlm.yml

@@ -138,6 +138,17 @@ jobs:
 
           def put(name: str, data: bytes):
               url = upload_root + "/" + urllib.parse.quote(name, safe="")
+              # Gitea refuses to overwrite a generic package file (HTTP 409), so the previous copy of this one
+              # file is deleted right before it is uploaded again (keeps the gap without a file as short as possible).
+              delete = urllib.request.Request(url, method="DELETE")
+              delete.add_header("Authorization", "token " + token)
+              delete.add_header("User-Agent", "tdlm-hmcl-publish")
+              try:
+                  with urllib.request.urlopen(delete, timeout=300) as response:
+                      response.read()
+              except urllib.error.HTTPError as exc:
+                  if exc.code != 404:
+                      raise SystemExit("HTTP %s deleting the old %s: %s" % (exc.code, name, exc.read()[:300]))
               request = urllib.request.Request(url, data=data, method="PUT")
               request.add_header("Authorization", "token " + token)
               request.add_header("Content-Type", "application/octet-stream")
@@ -204,7 +215,7 @@ jobs:
               "- %s/HMCL.jar\n\n"
               "TDLMPack does not Maven-resolve this launcher; point the pack README / install docs at these URLs "
               "instead of hand-copying exe/jar.\n"
-              "Client pack fileApi default: https://packages.dandanton.com/tdlm-client/latest\n"
+              "Client pack fileApi default: http://159.75.5.225:19527/tdlm-client\n"
               "(Pack must publish/mirror the same layout; see docs/TDLM_CONSUME.md).\n"
           ) % (package_root, package_root)
 

HMCL/src/main/java/org/jackhuang/hmcl/Metadata.java

@@ -141,9 +141,9 @@ public final class Metadata {
         return null;
     }
 
-    /// Default client Server Modpack fileApi: the Nexus raw repository `tdlm-client` read through the CDN host.
+    /// Default client Server Modpack fileApi: self-hosted static mirror on the TDLM VPS (nginx, port 19527).
     public static final String DEFAULT_CLIENT_FILE_API =
-            "https://maven.dandanton.com/repository/tdlm-client";
+            "http://159.75.5.225:19527/tdlm-client";
 
     /// Stable client update root (`server-manifest.json` and `overrides/` live under this URL).
     ///

HMCL/src/main/java/org/jackhuang/hmcl/download/HMCLDownloadProvider.java

@@ -3,6 +3,7 @@
 package org.jackhuang.hmcl.download;
 
 import org.glavo.url.WebURL;
+import org.jackhuang.hmcl.Metadata;
 import org.jackhuang.hmcl.download.cleanroom.CleanroomRemoteVersion;
 import org.jackhuang.hmcl.download.fabric.FabricRemoteVersion;
 import org.jackhuang.hmcl.download.forge.ForgeRemoteVersion;
@@ -132,6 +133,13 @@ public final class HMCLDownloadProvider extends DownloadProvider {
     public HMCLDownloadProvider(Supplier<@Unmodifiable List<String>> mirrorRoots) {
         this.mirrorRoots = Objects.requireNonNull(mirrorRoots);
         this.rules = List.of(
+                // The self-hosted client mirror carries the pack's full dependency set. BMCLAPI's
+                // redirect CDNs (sakura.sld.tw, cernet) and the Mojang/Forge origins are TLS-blocked
+                // on many mainland networks, so the VPS must be tried before any of them.
+                new SimpleRule("https://piston-meta.mojang.com", Metadata.getClientFileApi() + "/piston-meta", "https://bmclapi2.bangbang93.com"),
+                new SimpleRule("https://libraries.minecraft.net", Metadata.getClientFileApi() + "/libraries", "https://bmclapi2.bangbang93.com/libraries"),
+                new SimpleRule("https://maven.minecraftforge.net", Metadata.getClientFileApi() + "/forge-maven", "https://bmclapi2.bangbang93.com/maven"),
+                new SimpleRule("https://launcher.mojang.com", Metadata.getClientFileApi() + "/launcher-mojang", "https://bmclapi2.bangbang93.com"),
                 new MultiRootRule("https://bmclapi2.bangbang93.com", Function.identity()),
                 new MultiRootRule("https://bmclapi.bangbang93.com", Function.identity()),
                 new MultiRootRule("https://launchermeta.mojang.com", Function.identity()),
@@ -183,6 +191,11 @@ public final class HMCLDownloadProvider extends DownloadProvider {
                 new SimpleRule("https://hmcl.glavo.site/metadata/fmllibs", "https://alist.8mi.tech/d/mirror/HMCL-Metadata/Auto/fmllibs"),
                 new SimpleRule("https://zkitefly.github.io/unlisted-versions-of-minecraft", "https://alist.8mi.tech/d/mirror/unlisted-versions-of-minecraft/Auto"),
 
+                // files.prismlauncher.org is unreachable from mainland China (TLS handshake reset) and BMCLAPI
+                // does not mirror its repackaged log4j-fixed artifacts. Serve them from the self-hosted client
+                // mirror (alongside the fileApi root); Prism stays as the fallback for reachable networks.
+                new SimpleRule("https://files.prismlauncher.org/maven", Metadata.getClientFileApi() + "/maven"),
+
                 // https://github.com/mcmod-info-mirror/mcim-rust-api
                 new SimpleRule("https://api.modrinth.com", null, "https://mod.mcimirror.top/modrinth"),
                 new SimpleRule("https://cdn.modrinth.com", null, "https://mod.mcimirror.top"),
@@ -295,11 +308,18 @@ public final class HMCLDownloadProvider extends DownloadProvider {
     @Override
     public DownloadCandidates getAssetObjectCandidates(AssetObject assetObject) {
         String location = assetObject.getLocation();
-        return getCandidates(
-                fileSource,
-                WebURL.parse("https://resources.download.minecraft.net/" + location),
-                mirrorUrls("/assets/" + location)
-        );
+        WebURL officialUrl = WebURL.parse("https://resources.download.minecraft.net/" + location);
+        List<WebURL> mirrors = mirrorUrls("/assets/" + location);
+        if (preferMirror(fileSource)) {
+            // Keep the VPS strictly first: spreadPrimary would otherwise rotate BMCLAPI ahead of
+            // it, and BMCLAPI's asset CDN is unreachable on blocked networks (per-file timeouts).
+            var candidates = new ArrayList<DownloadCandidate>(mirrors.size() + 2);
+            candidates.add(DownloadCandidate.of(WebURL.parse(Metadata.getClientFileApi() + "/assets/" + location)));
+            candidates.addAll(spreadPrimary(mirrors.stream().map(DownloadCandidate::of).toList(), officialUrl.href()));
+            candidates.add(DownloadCandidate.of(officialUrl));
+            return DownloadCandidates.of(List.copyOf(candidates));
+        }
+        return getCandidates(fileSource, officialUrl, mirrors);
     }
 
     @NotNullByDefault

HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java

@@ -27,16 +27,11 @@ import org.jackhuang.hmcl.game.LauncherHelper;
 import org.jackhuang.hmcl.game.ModpackHelper;
 import org.jackhuang.hmcl.java.JavaManager;
 import org.jackhuang.hmcl.java.JavaRuntime;
-import org.glavo.url.WebURL;
 import org.jackhuang.hmcl.modpack.Modpack;
-import org.jackhuang.hmcl.modpack.server.ServerModpackManifest;
 import org.jackhuang.hmcl.setting.*;
-import org.jackhuang.hmcl.task.GetTask;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.task.TaskExecutor;
-import org.jackhuang.hmcl.ui.download.ModpackInstallWizardProvider;
-import org.jackhuang.hmcl.util.gson.JsonUtils;
 import org.jackhuang.hmcl.ui.account.AccountListPage;
 import org.jackhuang.hmcl.ui.animation.ContainerAnimations;
 import org.jackhuang.hmcl.ui.construct.*;
@@ -359,8 +354,8 @@ public final class Controllers {
         );
     }
 
-    /// Installs a launcher-bundled modpack when present; otherwise, when the repository has no
-    /// instances yet, pulls the org client [Metadata#getClientManifestUrl] and opens the install wizard.
+    /// Installs a launcher-bundled modpack when present. First-run remote install is deferred to the
+    /// home Start button ([Instances#ensureClientAndJoin]) so players never enter the install wizard.
     private static void tryInstallBundledModpack(HMCLGameRepository repository) {
         @Nullable Path modpackFile = Metadata.findBundledModpackFile();
         if (modpackFile != null) {
@@ -384,45 +379,7 @@ public final class Controllers {
                                 }
                             }), i18n("modpack.installing"), TaskCancellationAction.NO_CANCEL
             );
-            return;
         }
-
-        if (repository.getDisplayInstances().findAny().isPresent()) {
-            return;
-        }
-
-        String manifestUrl = Metadata.getClientManifestUrl();
-        LOG.info("No instances yet; fetching client Server Modpack from " + manifestUrl);
-        Controllers.taskDialog(
-                new GetTask(WebURL.parse(manifestUrl))
-                        .whenComplete(Schedulers.javafx(), (result, exception) -> {
-                            if (exception != null) {
-                                LOG.warning("Failed to fetch client Server Modpack manifest", exception);
-                                Controllers.dialog(
-                                        manifestUrl + "\n" + exception.getMessage(),
-                                        i18n("message.error"),
-                                        MessageType.ERROR);
-                                Instances.importModpack();
-                                return;
-                            }
-                            ServerModpackManifest manifest =
-                                    JsonUtils.fromMaybeMalformedJson(result, ServerModpackManifest.class);
-                            if (manifest == null) {
-                                LOG.warning("Malformed client Server Modpack manifest from " + manifestUrl);
-                                Controllers.dialog(
-                                        i18n("modpack.type.server.malformed"),
-                                        i18n("message.error"),
-                                        MessageType.ERROR);
-                                Instances.importModpack();
-                                return;
-                            }
-                            Controllers.getDecorator().startWizard(
-                                    new ModpackInstallWizardProvider(repository, manifest),
-                                    i18n("install.modpack"));
-                        }),
-                i18n("message.downloading"),
-                TaskCancellationAction.NO_CANCEL
-        );
     }
 
     /// Shows the content in the main-window dialog stack without waiting for it to close.

HMCL/src/main/java/org/jackhuang/hmcl/ui/instances/Instances.java

@@ -14,6 +14,7 @@ import org.jackhuang.hmcl.download.game.GameLibrariesTask;
 import org.jackhuang.hmcl.game.*;
 import org.jackhuang.hmcl.setting.*;
 import org.glavo.url.WebURL;
+import org.jackhuang.hmcl.modpack.ModpackConfiguration;
 import org.jackhuang.hmcl.modpack.server.ServerModpackManifest;
 import org.jackhuang.hmcl.task.GetTask;
 import org.jackhuang.hmcl.task.Schedulers;
@@ -25,21 +26,26 @@ import org.jackhuang.hmcl.ui.construct.DialogCloseEvent;
 import org.jackhuang.hmcl.ui.construct.MessageDialogPane;
 import org.jackhuang.hmcl.ui.construct.PromptDialogPane;
 import org.jackhuang.hmcl.ui.construct.Validator;
-import org.jackhuang.hmcl.ui.download.ModpackInstallWizardProvider;
+import org.jackhuang.hmcl.ui.download.LocalModpackPage;
 import org.jackhuang.hmcl.util.StringUtils;
 import org.jackhuang.hmcl.util.TaskCancellationAction;
 import org.jackhuang.hmcl.util.gson.JsonUtils;
 import org.jackhuang.hmcl.util.i18n.I18n;
 import org.jackhuang.hmcl.util.io.FileUtils;
+import org.jackhuang.hmcl.util.io.NetworkUtils;
 import org.jackhuang.hmcl.util.platform.OperatingSystem;
+import org.jackhuang.hmcl.modpack.Modpack;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.Map;
+import java.util.Objects;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
 import static org.jackhuang.hmcl.util.logging.Logger.LOG;
@@ -48,63 +54,198 @@ public final class Instances {
     private Instances() {
     }
 
-    /// Installs or updates the TDLM client.
+    /// Returns whether the installed server modpack is behind the remote `server-manifest.json`.
     ///
-    /// Prefers a launcher-bundled zip, then the org [Metadata#getClientManifestUrl] Server Modpack,
-    /// then the generic local/remote import wizard.
-    public static void installServerModpack() {
+    /// Compares the local embedded manifest version (and file path/hash set) with
+    /// `fileApi/server-manifest.json`. Network or parse failures return `false` so the home button
+    /// stays on "join".
+    public static boolean isClientUpdateAvailable(@Nullable HMCLGameInstance instance) {
+        if (instance == null) {
+            return false;
+        }
+        try {
+            Path configurationFile = instance.getModpackConfigurationFile();
+            if (Files.notExists(configurationFile)) {
+                return false;
+            }
+            ModpackConfiguration<ServerModpackManifest> configuration = JsonUtils.fromJsonFile(
+                    configurationFile, ModpackConfiguration.typeOf(ServerModpackManifest.class));
+            ServerModpackManifest local = configuration.getManifest();
+            if (local == null || StringUtils.isBlank(local.getFileApi())) {
+                return false;
+            }
+            String manifestUrl = StringUtils.removeSuffix(local.getFileApi().trim(), "/") + "/server-manifest.json";
+            ServerModpackManifest remote = JsonUtils.fromNonNullJson(
+                    NetworkUtils.doGet(manifestUrl), ServerModpackManifest.class);
+            if (!Objects.equals(local.getVersion(), remote.getVersion())) {
+                return true;
+            }
+            return !fileHashes(local).equals(fileHashes(remote));
+        } catch (Exception e) {
+            LOG.warning("Failed to check TDLM client update", e);
+            return false;
+        }
+    }
+
+    private static Map<String, String> fileHashes(ServerModpackManifest manifest) {
+        return manifest.getFiles().stream().collect(Collectors.toMap(
+                ModpackConfiguration.FileInformation::getPath,
+                ModpackConfiguration.FileInformation::getHash,
+                (left, right) -> right));
+    }
+
+    /// Installs or updates the TDLM client from fileApi / bundled zip without opening the install UI,
+    /// then joins the configured server when ready.
+    ///
+    /// Prefer this for the home Start / Join button. Existing server-modpack instances get differential
+    /// updates during launch via [org.jackhuang.hmcl.modpack.server.ServerModpackCompletionTask].
+    public static void ensureClientAndJoin() {
         HMCLGameRepository repository = GameDirectoryManager.getSelectedRepository();
         if (!repository.isLoaded()) {
             return;
         }
 
+        // Already installed: join immediately. Launch runs ServerModpackCompletionTask for updates.
+        if (repository.getSelectedInstance() != null && Metadata.findBundledModpackFile() == null) {
+            joinServer(repository.getSelectedInstance());
+            return;
+        }
+
         Path bundled = Metadata.findBundledModpackFile();
         if (bundled != null) {
-            Controllers.getDecorator().startWizard(
-                    new ModpackInstallWizardProvider(repository, bundled),
-                    i18n("install.modpack"));
+            installBundledThenJoin(repository, bundled);
             return;
         }
 
         Controllers.taskDialog(
                 new GetTask(WebURL.parse(Metadata.getClientManifestUrl()))
-                        .whenComplete(Schedulers.javafx(), (result, exception) -> {
-                            if (exception != null) {
-                                Controllers.dialog(
-                                        exception.getMessage(),
-                                        i18n("message.error"),
-                                        MessageDialogPane.MessageType.ERROR);
-                                importModpack();
-                                return;
-                            }
+                        .thenComposeAsync(Schedulers.javafx(), result -> {
                             ServerModpackManifest manifest = JsonUtils.fromMaybeMalformedJson(
                                     result, ServerModpackManifest.class);
                             if (manifest == null) {
+                                throw new IOException(i18n("modpack.type.server.malformed"));
+                            }
+                            return ensureRemoteClientInstalled(repository, manifest);
+                        })
+                        .whenComplete(Schedulers.javafx(), (ignored, exception) -> {
+                            if (exception != null) {
+                                LOG.warning("Failed to install or update TDLM client", exception);
                                 Controllers.dialog(
-                                        i18n("modpack.type.server.malformed"),
-                                        i18n("message.error"),
+                                        StringUtils.getStackTrace(exception),
+                                        i18n("install.failed"),
                                         MessageDialogPane.MessageType.ERROR);
-                                importModpack();
                                 return;
                             }
-                            Controllers.getDecorator().startWizard(
-                                    new ModpackInstallWizardProvider(repository, manifest),
-                                    i18n("install.modpack"));
+                            joinServer(GameDirectoryManager.getSelectedRepository().getSelectedInstance());
                         }),
-                i18n("message.downloading"),
+                i18n("modpack.installing"),
                 TaskCancellationAction.NORMAL);
     }
 
-    public static void importModpack() {
-        HMCLGameRepository repository = GameDirectoryManager.getSelectedRepository();
-        if (repository.isLoaded()) {
-            Controllers.getDecorator().startWizard(new ModpackInstallWizardProvider(repository), i18n("install.modpack"));
-        }
+    /// Silent first-install / update from the org client manifest — no wizard UI.
+    public static void installServerModpack() {
+        ensureClientAndJoin();
     }
 
-    /// @deprecated use [#installServerModpack()]
+    /// Install wizard is disabled for the dedicated server-client launcher.
+    public static void importModpack() {
+        LOG.info("Ignoring importModpack: install UI is disabled; use Start to install/update");
+    }
+
+    /// @deprecated use [#ensureClientAndJoin()]
     public static void addNewGame() {
-        installServerModpack();
+        ensureClientAndJoin();
+    }
+
+    /// Installs a local modpack zip without the wizard, then selects the new instance.
+    public static void installLocalModpackSilently(HMCLGameRepository repository, Path file) {
+        if (!repository.isLoaded()) {
+            return;
+        }
+        Controllers.taskDialog(
+                Task.composeAsync(Schedulers.io(), () -> {
+                            Modpack modpack = ModpackHelper.readModpackManifest(file);
+                            String name = LocalModpackPage.processModpackName(modpack.getName());
+                            if (StringUtils.isBlank(name)) {
+                                name = "TDLM";
+                            }
+                            GameInstanceID instanceId = new GameInstanceID(name);
+                            if (repository.hasInstance(instanceId)) {
+                                instanceId = new GameInstanceID(name + "-" + System.currentTimeMillis());
+                            }
+                            GameInstanceID id = instanceId;
+                            return ModpackHelper.getInstallTask(repository, file, id, modpack, null)
+                                    .thenRunAsync(Schedulers.javafx(), () ->
+                                            repository.setSelectedInstance(repository.getInstance(id)));
+                        })
+                        .whenComplete(Schedulers.javafx(), (ignored, exception) -> {
+                            if (exception != null) {
+                                LOG.warning("Failed to install local modpack", exception);
+                                Controllers.dialog(
+                                        StringUtils.getStackTrace(exception),
+                                        i18n("install.failed"),
+                                        MessageDialogPane.MessageType.ERROR);
+                            }
+                        }),
+                i18n("modpack.installing"),
+                TaskCancellationAction.NORMAL);
+    }
+
+    private static void installBundledThenJoin(HMCLGameRepository repository, Path bundled) {
+        Controllers.taskDialog(
+                Task.composeAsync(Schedulers.io(), () -> {
+                            Modpack modpack = ModpackHelper.readModpackManifest(bundled);
+                            String name = LocalModpackPage.processModpackName(modpack.getName());
+                            if (StringUtils.isBlank(name)) {
+                                name = "TDLM";
+                            }
+                            GameInstanceID instanceId = new GameInstanceID(name);
+                            return ModpackHelper.getInstallTask(repository, bundled, instanceId, modpack, null)
+                                    .thenRunAsync(Schedulers.javafx(), () -> {
+                                        repository.setSelectedInstance(repository.getInstance(instanceId));
+                                        try {
+                                            Files.deleteIfExists(bundled);
+                                        } catch (IOException e) {
+                                            LOG.warning("Failed to delete bundled modpack: " + bundled, e);
+                                        }
+                                    });
+                        })
+                        .whenComplete(Schedulers.javafx(), (ignored, exception) -> {
+                            if (exception != null) {
+                                LOG.warning("Failed to install bundled modpack", exception);
+                                Controllers.dialog(
+                                        StringUtils.getStackTrace(exception),
+                                        i18n("install.failed"),
+                                        MessageDialogPane.MessageType.ERROR);
+                                return;
+                            }
+                            joinServer(GameDirectoryManager.getSelectedRepository().getSelectedInstance());
+                        }),
+                i18n("modpack.installing"),
+                TaskCancellationAction.NO_CANCEL);
+    }
+
+    /// Installs when missing; selects an existing instance otherwise.
+    ///
+    /// Differential updates for an installed server modpack run during launch via
+    /// [org.jackhuang.hmcl.modpack.server.ServerModpackCompletionTask].
+    private static Task<?> ensureRemoteClientInstalled(
+            HMCLGameRepository repository, ServerModpackManifest manifest) throws IOException {
+        Modpack modpack = manifest.toModpack();
+        String name = LocalModpackPage.processModpackName(manifest.getName());
+        if (StringUtils.isBlank(name)) {
+            name = "TDLM";
+        }
+        GameInstanceID instanceId = new GameInstanceID(name);
+
+        if (repository.hasInstance(instanceId)) {
+            repository.setSelectedInstance(repository.getInstance(instanceId));
+            return Task.completed(null);
+        }
+
+        return ModpackHelper.getInstallTask(repository, manifest, instanceId, modpack)
+                .thenRunAsync(Schedulers.javafx(), () ->
+                        repository.setSelectedInstance(repository.getInstance(instanceId)));
     }
 
     public static void deleteInstance(HMCLGameInstance gameInstance) {
@@ -257,8 +398,10 @@ public final class Instances {
                         .addQuestion(new PromptDialogPane.Builder.BooleanQuestion(i18n("instance.manage.duplicate.duplicate_save"), false)));
     }
 
+    /// Updates via fileApi through the Start flow — no install wizard.
     public static void updateInstance(HMCLGameInstance gameInstance) {
-        Controllers.getDecorator().startWizard(new ModpackInstallWizardProvider(gameInstance.getRepository(), gameInstance.getId()));
+        gameInstance.getRepository().setSelectedInstance(gameInstance);
+        ensureClientAndJoin();
     }
 
     /// Queues an asset check with a fresh asset index for the supplied instance.
@@ -338,14 +481,7 @@ public final class Instances {
     @SafeVarargs
     public static void launch(@Nullable HMCLGameInstance gameInstance, Consumer<LauncherHelper>... injecters) {
         if (gameInstance == null) {
-            JFXButton installModpack = new JFXButton(i18n("install.modpack"));
-            installModpack.getStyleClass().add("dialog-accept");
-            installModpack.setOnAction(e -> installServerModpack());
-
-            Controllers.confirmAction(i18n("instance.empty.launch"), i18n("launch.failed"),
-                    MessageDialogPane.MessageType.ERROR,
-                    installModpack,
-                    null);
+            ensureClientAndJoin();
             return;
         }
 
@@ -412,11 +548,10 @@ public final class Instances {
         Controllers.navigate(Controllers.getSettingsPage());
     }
 
+    /// Instance management UI is disabled for the dedicated server-client launcher.
     public static void modifyGameSettings(HMCLGameInstance gameInstance) {
-        Controllers.getGameInstancePage().setInstance(gameInstance.getId(), gameInstance.getRepository());
-        Controllers.getGameInstancePage().showInstanceSettings();
-        // VersionPage.loadVersion will be invoked after navigation
-        Controllers.navigate(Controllers.getGameInstancePage());
+        LOG.info("Ignoring modifyGameSettings for " + gameInstance.getId()
+                + ": instance management UI is disabled");
     }
 
 }

HMCL/src/main/java/org/jackhuang/hmcl/ui/main/MainPage.java

@@ -58,6 +58,9 @@ public final class MainPage extends StackPane implements DecoratorPage {
             BindingMapping.of(GameDirectoryManager.selectedRepositoryProperty())
                     .flatMap(HMCLGameRepository::snapshotProperty);
 
+    /// Bumped when the home join button starts a new remote-update check, so stale results are ignored.
+    private int updateCheckGeneration;
+
     {
         HBox titleNode = new HBox(8);
         titleNode.setPadding(new Insets(0, 0, 0, 2));
@@ -135,18 +138,20 @@ public final class MainPage extends StackPane implements DecoratorPage {
         card.setMaxHeight(Region.USE_PREF_SIZE);
         StackPane.setAlignment(card, Pos.BOTTOM_CENTER);
 
+        // Start always installs/updates from fileApi then joins — never opens install or instance UI.
+        FXUtils.setOnActionWithCooldown(joinButton, MainPage.this::launch);
+
         FXUtils.onChangeAndOperate(currentGameProperty(), currentGame -> {
+            refreshJoinButton(joinButton, currentGame);
             if (currentGame == null) {
-                joinButton.setText(i18n("instance.launch.empty"));
-                FXUtils.setOnActionWithCooldown(joinButton, MainPage.this::launchNoGame);
                 packValue.setText(i18n("home.not_installed"));
                 routeFact.setVisible(false);
                 routeFact.setManaged(false);
                 serverFact.setVisible(false);
                 serverFact.setManaged(false);
+                routeFact.setOnMouseClicked(null);
+                routeFact.setCursor(Cursor.DEFAULT);
             } else {
-                joinButton.setText(i18n("server.join"));
-                FXUtils.setOnActionWithCooldown(joinButton, MainPage.this::launch);
                 packValue.setText(currentGame.getId().toString());
                 ServerEndpoint.@Nullable Route route = ServerEndpoint.selected(currentGame.getModpackConfigurationFile());
                 routeFact.setVisible(route != null);
@@ -181,6 +186,25 @@ public final class MainPage extends StackPane implements DecoratorPage {
         getChildren().addAll(art, hero, card);
     }
 
+    /// Sets the home button to install / update / join based on the selected instance and remote manifest.
+    private void refreshJoinButton(JFXButton joinButton, @Nullable HMCLGameInstance currentGame) {
+        int generation = ++updateCheckGeneration;
+        if (currentGame == null) {
+            joinButton.setText(i18n("instance.launch.empty"));
+            return;
+        }
+        joinButton.setText(i18n("server.join"));
+        Schedulers.io().execute(() -> {
+            boolean updateAvailable = Instances.isClientUpdateAvailable(currentGame);
+            FXUtils.runInFX(() -> {
+                if (generation != updateCheckGeneration || getCurrentGame() != currentGame) {
+                    return;
+                }
+                joinButton.setText(i18n(updateAvailable ? "server.update" : "server.join"));
+            });
+        });
+    }
+
     /// Pings the server behind `route` in the background and shows the result in `serverValue`.
     ///
     /// WebSocket routes cannot be pinged with plain TCP, so the status is hidden for them.
@@ -214,14 +238,9 @@ public final class MainPage extends StackPane implements DecoratorPage {
         return label;
     }
 
+    /// Installs or updates the client from fileApi when needed, then launches into the server.
     private void launch() {
-        HMCLGameRepository repository = GameDirectoryManager.getSelectedRepository();
-        Instances.joinServer(repository.getSelectedInstance());
-    }
-
-    /// Opens the server modpack install/update flow when no instance is selected.
-    private void launchNoGame() {
-        Instances.installServerModpack();
+        Instances.ensureClientAndJoin();
     }
 
     @Override

HMCL/src/main/java/org/jackhuang/hmcl/ui/main/RootPage.java

@@ -4,7 +4,6 @@ package org.jackhuang.hmcl.ui.main;
 
 import com.jfoenix.controls.JFXPopup;
 import javafx.beans.property.ReadOnlyObjectProperty;
-import org.jackhuang.hmcl.game.HMCLGameInstance;
 import org.jackhuang.hmcl.game.ModpackHelper;
 import org.jackhuang.hmcl.setting.Accounts;
 import org.jackhuang.hmcl.setting.GameDirectoryManager;
@@ -17,8 +16,6 @@ import org.jackhuang.hmcl.ui.account.AccountListPopupMenu;
 import org.jackhuang.hmcl.ui.construct.AdvancedListItem;
 import org.jackhuang.hmcl.ui.decorator.DecoratorAnimatedPage;
 import org.jackhuang.hmcl.ui.decorator.DecoratorPage;
-import org.jackhuang.hmcl.ui.download.ModpackInstallWizardProvider;
-import org.jackhuang.hmcl.ui.instances.GameAdvancedListItem;
 import org.jackhuang.hmcl.ui.instances.Instances;
 import org.jackhuang.hmcl.util.io.FileUtils;
 import org.jetbrains.annotations.Nullable;
@@ -43,20 +40,7 @@ public class RootPage extends DecoratorAnimatedPage implements DecoratorPage {
         accountListItem.setOnAction(e -> AccountListPopupMenu.show(accountListItem, JFXPopup.PopupVPosition.BOTTOM, JFXPopup.PopupHPosition.LEFT, 0, -accountListItem.getHeight()));
         accountListItem.accountProperty().bind(Accounts.selectedAccountProperty());
 
-        // second item in left sidebar
-        GameAdvancedListItem gameInstanceItem = new GameAdvancedListItem();
-        gameInstanceItem.setOnAction(e -> {
-            @Nullable HMCLGameInstance instance = GameDirectoryManager.getSelectedRepository().getSelectedInstance();
-            if (instance == null) {
-                Instances.installServerModpack();
-            } else {
-                Instances.modifyGameSettings(instance);
-            }
-        });
-        if (AnimationUtils.isAnimationEnabled()) {
-            gameInstanceItem.setPrepareAction(Controllers::prepareGameInstancePage);
-        }
-
+        // Instance management entry removed: Start on the home page installs/updates and joins.
         AdvancedListItem launcherSettingsItem = new AdvancedListItem();
         launcherSettingsItem.setLeftIcon(SVG.SETTINGS);
         launcherSettingsItem.setTitle(i18n("settings"));
@@ -68,9 +52,8 @@ public class RootPage extends DecoratorAnimatedPage implements DecoratorPage {
             launcherSettingsItem.setPrepareAction(Controllers::prepareSettingsPage);
         }
 
-        // The sidebar holds the modpack and settings entries; the account sits at the bottom-left.
+        // Sidebar: settings only; account sits at the bottom-left.
         getSidebar()
-                .add(gameInstanceItem)
                 .add(launcherSettingsItem);
         setSidebarBottom(accountListItem);
 
@@ -92,9 +75,9 @@ public class RootPage extends DecoratorAnimatedPage implements DecoratorPage {
                     modpacks -> {
                         Path file = modpacks.get(0);
                         if (ModpackHelper.isFileModpackByExtension(file)) {
-                            Controllers.getDecorator().startWizard(
-                                    new ModpackInstallWizardProvider(GameDirectoryManager.getSelectedRepository(), file),
-                                    i18n("install.modpack"));
+                            // Silent install — no modpack wizard UI.
+                            Instances.installLocalModpackSilently(
+                                    GameDirectoryManager.getSelectedRepository(), file);
                         } else if ("json".equalsIgnoreCase(FileUtils.getExtension(file))) {
                             Instances.installFromJson(GameDirectoryManager.getSelectedRepository(), file);
                         }

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -809,6 +809,7 @@ first_run.invalid=Use 1 to 16 letters, digits or underscores.
 home.server=Server
 home.server.unreachable=Unreachable
 server.join=Join Server
+server.update=Update
 instance.launch_and_enter_world=Play World
 instance.launch.empty=Start Game
 instance.launch.empty.installing=Installing Game

HMCL/src/main/resources/assets/lang/I18N_lzh.properties

@@ -629,6 +629,7 @@ first_run.invalid=一至十六字，限英文數字底綫。
 home.server=服
 home.server.unreachable=不通
 server.join=入服
+server.update=更新
 # instance.launch_and_enter_world=
 instance.launch.empty=啟戲
 instance.launch.empty.installing=裝戲

HMCL/src/main/resources/assets/lang/I18N_zh_Hans.properties

@@ -632,6 +632,7 @@ first_run.invalid=只能用 1 到 16 个英文字母、数字或下划线。
 home.server=服务器
 home.server.unreachable=连接不上
 server.join=进入服务器
+server.update=更新
 instance.launch_and_enter_world=进入世界
 instance.launch.empty=开始游戏
 instance.launch.empty.installing=安装游戏

HMCL/src/main/resources/assets/lang/I18N_zh_Hant.properties

@@ -626,6 +626,7 @@ first_run.invalid=只能使用 1 到 16 個英文字母、數字或底線。
 home.server=伺服器
 home.server.unreachable=無法連線
 server.join=進入伺服器
+server.update=更新
 instance.launch_and_enter_world=進入世界
 instance.launch.empty=開始遊戲
 instance.launch.empty.installing=安裝遊戲

HMCLCore/src/main/java/org/jackhuang/hmcl/download/java/mojang/MojangJavaDownloadTask.java

@@ -25,6 +25,7 @@ import java.nio.file.attribute.BasicFileAttributes;
 import java.security.DigestInputStream;
 import java.security.MessageDigest;
 import java.util.*;
+import java.util.concurrent.atomic.AtomicInteger;
 
 import static org.jackhuang.hmcl.util.logging.Logger.LOG;
 
@@ -37,6 +38,8 @@ public final class MojangJavaDownloadTask extends Task<MojangJavaDownloadTask.Re
     private final Path tempDir;
     private final Task<MojangJavaRemoteFiles> javaDownloadsTask;
     private final List<Task<?>> dependencies = new ArrayList<>();
+    private final AtomicInteger completedFiles = new AtomicInteger();
+    private volatile int totalFiles;
 
     private volatile MojangJavaDownloads.JavaDownload download;
 
@@ -147,6 +150,21 @@ public final class MojangJavaDownloadTask extends Task<MojangJavaDownloadTask.Re
                 Files.createSymbolicLink(dest, Paths.get(link.getTarget()));
             }
         }
+
+        // Report per-file progress so the bar advances through the download, LZMA decompress and
+        // cache-copy phases; otherwise it stays indeterminate while files appear on disk and players
+        // assume the install is frozen. The callbacks run after each file completes and never touch
+        // the download/decompress logic above.
+        totalFiles = dependencies.size();
+        if (totalFiles > 0) {
+            List<Task<?>> tracked = new ArrayList<>(totalFiles);
+            for (Task<?> dependency : dependencies) {
+                tracked.add(dependency.thenRunAsync(() -> updateProgress(completedFiles.incrementAndGet(), totalFiles)));
+            }
+            dependencies.clear();
+            dependencies.addAll(tracked);
+            updateProgress(0, totalFiles);
+        }
     }
 
     @Override

HMCLCore/src/main/java/org/jackhuang/hmcl/modpack/server/ServerModpackCompletionTask.java

@@ -213,6 +213,6 @@ public class ServerModpackCompletionTask extends Task<Void> {
     public void postExecute() throws Exception {
         if (manifest == null || StringUtils.isBlank(manifest.getManifest().getFileApi())) return;
         Files.createDirectories(configurationFile.getParent());
-        JsonUtils.writeToJsonFile(configurationFile, new ModpackConfiguration<>(remoteManifest, this.manifest.getType(), this.manifest.getName(), this.manifest.getVersion(), remoteManifest.getFiles()));
+        JsonUtils.writeToJsonFile(configurationFile, new ModpackConfiguration<>(remoteManifest, this.manifest.getType(), this.manifest.getName(), remoteManifest.getVersion(), remoteManifest.getFiles()));
     }
 }

docs/TDLM_CONSUME.md

@@ -46,26 +46,33 @@ Assets on each tag: `HMCL.exe`, `HMCL.jar`, plus `.sha256` files.
 In `TDLM/TDLMPack` README §启动, replace the repo-only “安装 TDLM/HMCL” step with one of the URLs above.
 **Do not** add HMCL as a Gradle/Maven dependency of the pack — pack CI stays pack-only.
 
-### 4. Client pack fileApi (CDN)
+### 4. Client pack fileApi (self-hosted VPS)
 
 HMCL default (`Metadata.DEFAULT_CLIENT_FILE_API`):
 
 ```text
-https://packages.dandanton.com/tdlm-client/latest
+http://159.75.5.225:19527/tdlm-client
 ```
 
 First install / updates fetch `{fileApi}/server-manifest.json` (and `overrides/**` under that root).
 Override at runtime: `-Dhmcl.client.fileApi=…` or jar attribute `hmcl.client.fileApi`.
 
+The fileApi is a read-only nginx static mirror on the TDLM VPS (`159.75.5.225`, port `19527`,
+root `/var/www/tdlm-dl`). Players read it anonymously; integrity is verified by the SHA-1 hashes
+in `server-manifest.json`.
+
 **TDLMPack must use the same URL** so `server-manifest.json` embeds it:
 
 ```text
-TDLM_CLIENT_FILE_API=https://packages.dandanton.com/tdlm-client/latest
+TDLM_CLIENT_FILE_API=http://159.75.5.225:19527/tdlm-client
 ```
 
-Set that as the Gitea Actions **variable** on `TDLM/TDLMPack` (pack.yml already passes `vars.TDLM_CLIENT_FILE_API`).
+Set that as the Gitea Actions **variable** on `TDLM/TDLMPack` (pack.yml passes `vars.TDLM_CLIENT_FILE_API`;
+`PackBuild.DEFAULT_FILE_API` is the build-time fallback).
 
-**Publish caveat:** Pack’s current workflow PUTs the client tree to whatever `TDLM_CLIENT_FILE_API` is (upload root = fileApi). Today that defaults to Gitea generic
-`https://git.nest.potatolab.uk:8443/api/packages/TDLM/generic/tdlm-client/latest`.
-If you only change the HMCL default to the CDN and leave Pack publishing to Gitea, players will 404 unless you **mirror/sync** Gitea → `packages.dandanton.com/tdlm-client/latest`.
-If you set `TDLM_CLIENT_FILE_API` to the CDN URL, Pack CI must be able to PUT to that CDN (or you must split “upload origin” from “public fileApi” in Pack — not implemented today). Do not point HMCL at the CDN without one of those two ops paths.
+**Publish path (upload origin split from public fileApi):** Pack CI no longer PUTs to the read URL.
+The `pack.yml` "Publish the client Server Modpack to fileApi" step rsyncs `build/pack/client/overrides/`
+then `server-manifest.json` (manifest last) over SSH to `ubuntu@159.75.5.225:/var/www/tdlm-dl/tdlm-client`.
+Auth is the repo secret `TDLM_VPS_SSH_KEY`, an ed25519 deploy key confined on the VPS by
+`command="/usr/bin/rrsync /var/www/tdlm-dl/tdlm-client"` (rsync-only, no shell, no forwarding).
+The public port 19527 serves GET/HEAD only — there is no public write surface.