v1.0.14.2 — fix JFX hang (ForkJoinPool), retry logic for connection reset, library logging

.gitignore

@@ -10,6 +10,7 @@ server/data
 jre
 .vscode
 dependency-reduced-pom.xml
+.flattened-pom.xml
 OpenJDK21U-jre_x64_windows_hotspot_21.0.6_7.zip
 telegram-bot/
 builds/
@@ -18,5 +19,4 @@ data/
 packs/
 .__pycache__
 .pytest_cache
-.venv
-resources
+.venvtodo.txt

launcher/bootstrap/pom.xml

@@ -7,7 +7,7 @@
     <parent>
         <groupId>me.sashegdev</groupId>
         <artifactId>ZernMCLauncher</artifactId>
-        <version>1.0.10</version>
+        <version>${revision}</version>
     </parent>
 
     <artifactId>zernmc-bootstrap</artifactId>

launcher/bootstrap/src/main/java/me/sashegdev/zernmc/launcher/Bootstrap.java

@@ -13,11 +13,14 @@ import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.UUID;
 import javax.swing.*;
 import javax.swing.plaf.basic.BasicProgressBarUI;
 import java.awt.*;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
@@ -159,15 +162,38 @@ public class Bootstrap {
         
         ProcessBuilder pb = new ProcessBuilder(cmd);
         pb.directory(baseDir.toFile());
-        pb.inheritIO();
+        pb.redirectErrorStream(false);
         
         log("Starting process: " + String.join(" ", cmd));
         
         Process p = pb.start();
+        
+        // Read stderr in background thread for crash reporting
+        StringBuilder errorOutput = new StringBuilder();
+        Thread errorReader = new Thread(() -> {
+            try (BufferedReader reader = new BufferedReader(
+                    new InputStreamReader(p.getErrorStream(), StandardCharsets.UTF_8))) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    errorOutput.append(line).append("\n");
+                    log("[JFX] " + line);
+                }
+            } catch (Exception ignored) {}
+        });
+        errorReader.setDaemon(true);
+        errorReader.start();
+        
         int code = p.waitFor();
+        errorReader.join(2000);
         
         log("JFX process exited with code: " + code);
-        System.exit(code);
+        
+        if (code != 0 && !GraphicsEnvironment.isHeadless()) {
+            String stderr = errorOutput.toString();
+            SwingUtilities.invokeLater(() -> showCrashDialog(code, stderr));
+        } else {
+            System.exit(code);
+        }
     }
     
     private static Path findJava(boolean preferConsole) {
@@ -563,6 +589,203 @@ public class Bootstrap {
         }
     }
 
+    // ====================== CRASH HANDLER ======================
+
+    private static String readFileSafe(Path path, int maxLines) {
+        if (!Files.exists(path)) return "(file not found)";
+        try {
+            List<String> lines = Files.readAllLines(path, StandardCharsets.UTF_8);
+            if (lines.size() <= maxLines) {
+                return String.join("\n", lines);
+            }
+            List<String> tail = lines.subList(lines.size() - maxLines, lines.size());
+            return "... (" + (lines.size() - maxLines) + " lines omitted)\n" + String.join("\n", tail);
+        } catch (Exception e) {
+            return "(error reading: " + e.getMessage() + ")";
+        }
+    }
+
+    private static Map<String, Object> collectCrashInfo(int exitCode, String stderr) {
+        Map<String, Object> info = new HashMap<>();
+
+        // Version
+        info.put("launcher_version", readCurrentVersion());
+
+        // Exit
+        info.put("exit_code", exitCode);
+        info.put("stderr", stderr != null ? stderr : "");
+        info.put("launcher_log", readFileSafe(logDir.resolve("launcher.log"), 200));
+
+        // System
+        Map<String, Object> system = new HashMap<>();
+        system.put("os_name", System.getProperty("os.name", "unknown"));
+        system.put("os_version", System.getProperty("os.version", "unknown"));
+        system.put("os_arch", System.getProperty("os.arch", "unknown"));
+        system.put("java_version", System.getProperty("java.version", "unknown"));
+        system.put("java_vendor", System.getProperty("java.vendor", "unknown"));
+        system.put("available_processors", Runtime.getRuntime().availableProcessors());
+        system.put("total_memory_mb", Runtime.getRuntime().maxMemory() / (1024 * 1024));
+        info.put("system", system);
+
+        // User (from auth.json, tokens excluded)
+        Map<String, Object> user = new HashMap<>();
+        try {
+            Path authFile = Path.of(System.getProperty("user.home"), ".zernmc", "auth.json");
+            if (Files.exists(authFile)) {
+                String authContent = Files.readString(authFile, StandardCharsets.UTF_8);
+                JsonObject authJson = JsonParser.parseString(authContent).getAsJsonObject();
+                if (authJson.has("username")) user.put("username", authJson.get("username").getAsString());
+                if (authJson.has("uuid")) user.put("uuid", authJson.get("uuid").getAsString());
+                if (authJson.has("role")) user.put("role", authJson.get("role").getAsInt());
+            }
+        } catch (Exception ignored) {}
+        info.put("user", user);
+
+        return info;
+    }
+
+    private static void showCrashDialog(int exitCode, String stderr) {
+        Map<String, Object> crashInfo = collectCrashInfo(exitCode, stderr);
+        Gson gson = new GsonBuilder().setPrettyPrinting().create();
+        String fullReport = gson.toJson(crashInfo);
+
+        JFrame frame = new JFrame("ZernMC Launcher - Crash Report");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(700, 520);
+        frame.setLocationRelativeTo(null);
+        frame.setResizable(true);
+
+        Color bgColor = new Color(0x0c, 0x0c, 0x12);
+        Color surfaceColor = new Color(0x16, 0x16, 0x1f);
+        Color accentColor = new Color(0xe9, 0x45, 0x60);
+        Color textColor = new Color(0xee, 0xee, 0xf0);
+        Color mutedColor = new Color(0x88, 0x88, 0x9a);
+
+        JPanel root = new JPanel(new BorderLayout());
+        root.setBackground(bgColor);
+        root.setBorder(BorderFactory.createEmptyBorder(16, 20, 16, 20));
+
+        // Title
+        JLabel titleLabel = new JLabel("ZernMC Launcher Crashed (code: " + exitCode + ")");
+        titleLabel.setFont(new Font("Segoe UI", Font.BOLD, 16));
+        titleLabel.setForeground(accentColor);
+        titleLabel.setBorder(BorderFactory.createEmptyBorder(0, 0, 12, 0));
+        root.add(titleLabel, BorderLayout.NORTH);
+
+        // Log area
+        JTextArea logArea = new JTextArea(fullReport);
+        logArea.setEditable(false);
+        logArea.setFont(new Font("Consolas", Font.PLAIN, 12));
+        logArea.setBackground(surfaceColor);
+        logArea.setForeground(textColor);
+        logArea.setCaretColor(textColor);
+        logArea.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        JScrollPane scrollPane = new JScrollPane(logArea);
+        scrollPane.setBorder(BorderFactory.createLineBorder(new Color(0x2a, 0x2a, 0x3a)));
+        scrollPane.getViewport().setBackground(surfaceColor);
+        root.add(scrollPane, BorderLayout.CENTER);
+
+        // Buttons
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 8, 12));
+        buttonPanel.setOpaque(false);
+
+        JLabel statusLabel = new JLabel(" ");
+        statusLabel.setFont(new Font("Segoe UI", Font.PLAIN, 12));
+        statusLabel.setForeground(mutedColor);
+        buttonPanel.add(statusLabel);
+
+        JButton openLogsBtn = new JButton("Open Logs Folder");
+        styleCrashButton(openLogsBtn, mutedColor, bgColor);
+        openLogsBtn.addActionListener(e -> {
+            try {
+                Desktop.getDesktop().open(logDir.toFile());
+            } catch (Exception ignored) {}
+        });
+        buttonPanel.add(openLogsBtn);
+
+        JButton sendBtn = new JButton("Send to Server");
+        styleCrashButton(sendBtn, new Color(0x45, 0xe9, 0x60), bgColor);
+        sendBtn.addActionListener(e -> {
+            sendBtn.setEnabled(false);
+            sendBtn.setText("Sending...");
+            new Thread(() -> {
+                boolean ok = sendCrashReport(crashInfo);
+                SwingUtilities.invokeLater(() -> {
+                    if (ok) {
+                        statusLabel.setForeground(new Color(0x45, 0xe9, 0x60));
+                        statusLabel.setText("Crash report sent. Thank you!");
+                        sendBtn.setText("Sent");
+                    } else {
+                        statusLabel.setForeground(accentColor);
+                        statusLabel.setText("Failed to send. Check logs folder.");
+                        sendBtn.setEnabled(true);
+                        sendBtn.setText("Send to Server");
+                    }
+                });
+            }).start();
+        });
+        buttonPanel.add(sendBtn);
+
+        JButton closeBtn = new JButton("Close");
+        styleCrashButton(closeBtn, new Color(0x45, 0x60, 0xe9), bgColor);
+        closeBtn.addActionListener(e -> {
+            frame.dispose();
+            System.exit(exitCode);
+        });
+        buttonPanel.add(closeBtn);
+
+        root.add(buttonPanel, BorderLayout.SOUTH);
+
+        frame.setContentPane(root);
+        frame.setVisible(true);
+        frame.toFront();
+    }
+
+    private static void styleCrashButton(JButton btn, Color fg, Color bg) {
+        btn.setFont(new Font("Segoe UI", Font.PLAIN, 13));
+        btn.setForeground(fg);
+        btn.setBackground(bg);
+        btn.setBorderPainted(false);
+        btn.setFocusPainted(false);
+        btn.setContentAreaFilled(false);
+        btn.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+        btn.addMouseListener(new java.awt.event.MouseAdapter() {
+            public void mouseEntered(java.awt.event.MouseEvent e) { btn.setForeground(Color.WHITE); }
+            public void mouseExited(java.awt.event.MouseEvent e) { btn.setForeground(fg); }
+        });
+    }
+
+    private static boolean sendCrashReport(Map<String, Object> data) {
+        try {
+            Gson gson = new Gson();
+            String jsonBody = gson.toJson(data);
+            byte[] bodyBytes = jsonBody.getBytes(StandardCharsets.UTF_8);
+
+            URL url = new URL(BASE_URL + "/launcher/crash-report");
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setRequestMethod("POST");
+            conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
+            conn.setRequestProperty("Accept", "application/json");
+            conn.setRequestProperty("Content-Length", String.valueOf(bodyBytes.length));
+            conn.setDoOutput(true);
+            conn.setConnectTimeout(10000);
+            conn.setReadTimeout(10000);
+
+            try (java.io.OutputStream os = conn.getOutputStream()) {
+                os.write(bodyBytes);
+                os.flush();
+            }
+
+            int status = conn.getResponseCode();
+            conn.disconnect();
+            return status == 200;
+        } catch (Exception e) {
+            log("Crash report send failed: " + e.getMessage());
+            return false;
+        }
+    }
+
     // ====================== SWING UI ======================
 
     private static class BootstrapUI {

launcher/launcher/pom.xml

@@ -7,7 +7,7 @@
     <parent>
         <groupId>me.sashegdev</groupId>
         <artifactId>ZernMCLauncher</artifactId>
-        <version>1.0.10</version>
+        <version>${revision}</version>
     </parent>
 
     <artifactId>zernmclauncher</artifactId>
@@ -116,7 +116,7 @@
                                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <mainClass>me.sashegdev.zernmc.launcher.Main</mainClass>
                                     <manifestEntries>
-                                        <Implementation-Version>${project.version}</Implementation-Version>
+                                        <Implementation-Version>${project.version}.${hotfix}</Implementation-Version>
                                         <Implementation-Title>ZernMC Launcher</Implementation-Title>
                                     </manifestEntries>
                                 </transformer>
@@ -150,11 +150,11 @@
                                 <minVersion>21</minVersion>
                             </jre>
                             <versionInfo>
-                                <fileVersion>${project.version}.0</fileVersion>
-                                <txtFileVersion>${project.version}</txtFileVersion>
+                                <fileVersion>${project.version}.${hotfix}</fileVersion>
+                                <txtFileVersion>${project.version}.${hotfix}</txtFileVersion>
                                 <fileDescription>ZernMC Launcher</fileDescription>
-                                <productVersion>${project.version}.0</productVersion>
-                                <txtProductVersion>${project.version}</txtProductVersion>
+                                <productVersion>${project.version}.${hotfix}</productVersion>
+                                <txtProductVersion>${project.version}.${hotfix}</txtProductVersion>
                                 <productName>ZernMC</productName>
                                 <companyName>ZernMC</companyName>
                                 <internalName>zernmc</internalName>
@@ -181,11 +181,11 @@
                                 <minVersion>21</minVersion>
                             </jre>
                             <versionInfo>
-                                <fileVersion>${project.version}.0</fileVersion>
-                                <txtFileVersion>${project.version}</txtFileVersion>
+                                <fileVersion>${project.version}.${hotfix}</fileVersion>
+                                <txtFileVersion>${project.version}.${hotfix}</txtFileVersion>
                                 <fileDescription>ZernMC Launcher CLI</fileDescription>
-                                <productVersion>${project.version}.0</productVersion>
-                                <txtProductVersion>${project.version}</txtProductVersion>
+                                <productVersion>${project.version}.${hotfix}</productVersion>
+                                <txtProductVersion>${project.version}.${hotfix}</txtProductVersion>
                                 <productName>ZernMC CLI</productName>
                                 <companyName>ZernMC</companyName>
                                 <internalName>zernmc-cli</internalName>
@@ -207,7 +207,7 @@
                         <goals><goal>run</goal></goals>
                         <configuration>
                             <target>
-                                <echo file="../../server/builds/build.version">${project.version}</echo>
+                                <echo file="../../server/builds/build.version">${project.version}.${hotfix}</echo>
 
                                 <!-- Удаляем старую папку lib если есть -->
                                 <delete dir="../../server/builds/lib"/>
@@ -280,7 +280,7 @@ How to use CLI:
                                 </echo>
                                 
                                 <!-- Создаём один архив со всем -->
-                                <zip destfile="../../server/builds/ZernMC-win-${project.version}.zip"
+                                <zip destfile="../../server/builds/ZernMC-win-${revision}.${hotfix}.zip"
                                      basedir="../../server/builds"
                                      includes="zernmc.exe,zernmc-cli.exe,bin/**,assets/**,lib/**,README.txt"
                                      excludes="build.version,*.jar"/>

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/Bootstrap.java

@@ -10,55 +10,162 @@ import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Stream;
 
 public class Bootstrap {
     private static final String VERSION_FILE = "build.version";
     private static final String JAR_NAME = "ZernMCLauncher.jar";
     private static final String BASE_URL = "https://api.zernmc.ru";
-    
+
     private static Path baseDir;
     private static Path logDir;
-    
+
     public static void main(String[] args) throws Exception {
         baseDir = Paths.get("").toAbsolutePath();
         logDir = baseDir.resolve("logs");
         Files.createDirectories(logDir);
-        
+
         log("=== ZernMC Launcher ===");
-        
+
         List<String> argList = Arrays.asList(args);
         boolean cliMode = argList.contains("--cli");
         boolean jfxMode = !cliMode;
-        
+
+        cleanupStaleUpdates();
+
         String currentVersion = readCurrentVersion();
         String serverVersion = getServerVersion();
-        
+
         log("Local version: " + currentVersion);
         log("Server version: " + serverVersion);
-        
+
         if (isNewer(serverVersion, currentVersion)) {
             log("Update available!");
-            downloadUpdate(serverVersion);
+            updateJar(serverVersion);
+
+            Path ownExe = getOwnExe();
+            if (ownExe != null) {
+                log("Self-updating bootstrap...");
+                selfUpdate(ownExe);
+                return;
+            }
+
+            Files.writeString(baseDir.resolve(VERSION_FILE), serverVersion);
+            log("Updated to v" + serverVersion);
         } else {
             log("Version is up to date");
         }
-        
+
         if (jfxMode) {
             launchJFX();
         } else {
             launchCLI();
         }
     }
-    
-    private static void log(String msg) {
-        String entry = "[" + LocalDateTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + "] " + msg;
-        System.out.println(entry);
-        try {
-            Files.writeString(logDir.resolve("launcher.log"), entry + "\n", 
-                StandardOpenOption.CREATE, StandardOpenOption.APPEND);
+
+    private static void cleanupStaleUpdates() {
+        try (Stream<Path> files = Files.list(baseDir)) {
+            files.filter(p -> p.toString().endsWith(".update"))
+                 .forEach(p -> {
+                     try {
+                         Files.deleteIfExists(p);
+                         log("Cleaned stale: " + p.getFileName());
+                     } catch (Exception ignored) {}
+                 });
         } catch (Exception ignored) {}
     }
-    
+
+    private static void updateJar(String newVersion) throws Exception {
+        Path jarFile = baseDir.resolve(JAR_NAME);
+        Path jarUpdate = baseDir.resolve(JAR_NAME + ".update");
+
+        if (Files.exists(jarFile)) {
+            try {
+                Files.move(jarFile, jarUpdate, StandardCopyOption.REPLACE_EXISTING);
+                log("Renamed " + JAR_NAME + " → " + JAR_NAME + ".update");
+            } catch (Exception e) {
+                log("Could not rename " + JAR_NAME + ": " + e.getMessage());
+            }
+        }
+
+        downloadFile(BASE_URL + "/launcher/download/jar", jarFile);
+        log("Downloaded new " + JAR_NAME);
+
+        try {
+            Files.deleteIfExists(jarUpdate);
+            log("Removed " + JAR_NAME + ".update");
+        } catch (Exception e) {
+            log("Could not remove " + JAR_NAME + ".update: " + e.getMessage());
+        }
+
+        Files.writeString(baseDir.resolve(VERSION_FILE), newVersion);
+    }
+
+    private static void selfUpdate(Path exePath) throws Exception {
+        String exeName = exePath.getFileName().toString();
+        Path exeUpdate = baseDir.resolve(exeName + ".update");
+
+        try {
+            Files.move(exePath, exeUpdate, StandardCopyOption.REPLACE_EXISTING);
+            log("Renamed " + exeName + " → " + exeName + ".update");
+        } catch (Exception e) {
+            log("Could not rename " + exeName + ": " + e.getMessage());
+            return;
+        }
+
+        downloadFile(BASE_URL + "/launcher/download/exe", exePath);
+
+        log("Launching new " + exeName + "...");
+        new ProcessBuilder(exePath.toAbsolutePath().toString())
+            .directory(baseDir.toFile())
+            .inheritIO()
+            .start();
+
+        Thread.sleep(500);
+        log("Exiting old process");
+        System.exit(0);
+    }
+
+    private static Path getOwnExe() {
+        try {
+            String cmd = ProcessHandle.current().info().command().orElse(null);
+            if (cmd != null) {
+                Path p = Paths.get(cmd);
+                String name = p.getFileName().toString().toLowerCase();
+                if (name.contains("zernmc")) return p;
+            }
+        } catch (Exception ignored) {}
+
+        for (String name : Arrays.asList("zernmc.exe", "zernmc-cli.exe")) {
+            Path p = baseDir.resolve(name);
+            if (Files.exists(p)) return p;
+        }
+        return null;
+    }
+
+    private static void downloadFile(String urlStr, Path target) throws Exception {
+        URL url = new URL(urlStr);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestMethod("GET");
+
+        if (conn.getResponseCode() == 200) {
+            try (InputStream in = conn.getInputStream();
+                 OutputStream out = new FileOutputStream(target.toFile())) {
+                byte[] buf = new byte[8192];
+                int len;
+                long total = 0;
+                while ((len = in.read(buf)) > 0) {
+                    out.write(buf, 0, len);
+                    total += len;
+                    System.out.print("\rDownloaded: " + (total / 1024 / 1024) + " MB");
+                }
+            }
+            System.out.println();
+        } else {
+            throw new IOException("Server returned code: " + conn.getResponseCode());
+        }
+    }
+
     private static String readCurrentVersion() {
         Path f = baseDir.resolve(VERSION_FILE);
         try {
@@ -66,7 +173,7 @@ public class Bootstrap {
         } catch (Exception ignored) {}
         return "0.0.0";
     }
-    
+
     private static String getServerVersion() {
         try {
             URL url = new URL(BASE_URL + "/launcher/version");
@@ -83,65 +190,40 @@ public class Bootstrap {
         } catch (Exception ignored) {}
         return "unknown";
     }
-    
+
     private static boolean isNewer(String server, String current) {
         try {
             String[] sa = server.split("\\.");
             String[] ca = current.split("\\.");
-            for (int i = 0; i < Math.min(sa.length, ca.length); i++) {
-                int sv = Integer.parseInt(sa[i]);
-                int cv = Integer.parseInt(ca[i]);
+            int max = Math.max(sa.length, ca.length);
+            for (int i = 0; i < max; i++) {
+                int sv = i < sa.length ? Integer.parseInt(sa[i]) : 0;
+                int cv = i < ca.length ? Integer.parseInt(ca[i]) : 0;
                 if (sv > cv) return true;
                 if (sv < cv) return false;
             }
-            return sa.length > ca.length;
+            return false;
         } catch (Exception ignored) {}
         return false;
     }
-    
-    private static void downloadUpdate(String newVersion) throws Exception {
-        URL url = new URL(BASE_URL + "/launcher/download/jar");
-        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-        conn.setRequestMethod("GET");
-        
-        if (conn.getResponseCode() == 200) {
-            Path jarFile = baseDir.resolve(JAR_NAME);
-            Path tmp = jarFile.resolveSibling("zernmc-launcher-new.jar");
-            
-            try (InputStream in = conn.getInputStream();
-                 OutputStream out = new FileOutputStream(tmp.toFile())) {
-                byte[] buf = new byte[8192];
-                int len;
-                long total = 0;
-                while ((len = in.read(buf)) > 0) {
-                    out.write(buf, 0, len);
-                    total += len;
-                    System.out.print("\rDownloaded: " + (total/1024/1024) + " MB");
-                }
-            }
-            log("Downloaded");
-            
-            Path backup = jarFile.resolveSibling(JAR_NAME + ".old");
-            
-            if (Files.exists(jarFile)) Files.move(jarFile, backup, StandardCopyOption.REPLACE_EXISTING);
-            Files.move(tmp, jarFile, StandardCopyOption.REPLACE_EXISTING);
-            if (Files.exists(backup)) Files.delete(backup);
-            
-            Files.writeString(baseDir.resolve(VERSION_FILE), newVersion);
-            log("Updated to v" + newVersion);
-        } else {
-            throw new IOException("Server returned code: " + conn.getResponseCode());
-        }
+
+    private static void log(String msg) {
+        String entry = "[" + LocalDateTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + "] " + msg;
+        System.out.println(entry);
+        try {
+            Files.writeString(logDir.resolve("launcher.log"), entry + "\n",
+                StandardOpenOption.CREATE, StandardOpenOption.APPEND);
+        } catch (Exception ignored) {}
     }
-    
+
     private static void launchJFX() throws Exception {
         Path javaBin = findJava();
         Path jarPath = baseDir.resolve(JAR_NAME);
-        
+
         log("Starting JFX mode...");
         log("Java: " + javaBin);
         log("JAR: " + jarPath);
-        
+
         List<String> cmd = new ArrayList<>();
         cmd.add(javaBin.toAbsolutePath().toString());
         cmd.add("-Dfile.encoding=UTF-8");
@@ -150,17 +232,17 @@ public class Bootstrap {
         cmd.add("-jar");
         cmd.add(jarPath.toAbsolutePath().toString());
         cmd.add("--jfx");
-        
+
         ProcessBuilder pb = new ProcessBuilder(cmd);
         pb.directory(baseDir.toFile());
-        
+
         if (System.getProperty("os.name").toLowerCase().contains("windows")) {
             pb.environment().put("JAVA_TOOL_OPTIONS", "-Dfile.encoding=UTF-8");
         }
-        
+
         pb.redirectErrorStream(true);
         Process p = pb.start();
-        
+
         Thread outputThread = new Thread(() -> {
             try (BufferedReader reader = new BufferedReader(
                     new InputStreamReader(p.getInputStream(), StandardCharsets.UTF_8))) {
@@ -171,21 +253,21 @@ public class Bootstrap {
             } catch (Exception ignored) {}
         });
         outputThread.start();
-        
+
         int code = p.waitFor();
         try { outputThread.interrupt(); } catch (Exception ignored) {}
         log("Exited with code: " + code);
         System.exit(code);
     }
-    
+
     private static void launchCLI() throws Exception {
         Path javaBin = findJava();
         Path jarPath = baseDir.resolve(JAR_NAME);
-        
+
         log("Starting CLI mode...");
         log("Java: " + javaBin);
         log("JAR: " + jarPath);
-        
+
         List<String> cmd = new ArrayList<>();
         cmd.add(javaBin.toAbsolutePath().toString());
         cmd.add("-Dfile.encoding=UTF-8");
@@ -194,17 +276,17 @@ public class Bootstrap {
         cmd.add("-jar");
         cmd.add(jarPath.toAbsolutePath().toString());
         cmd.add("--cli");
-        
+
         ProcessBuilder pb = new ProcessBuilder(cmd);
         pb.directory(baseDir.toFile());
-        
+
         if (System.getProperty("os.name").toLowerCase().contains("windows")) {
             pb.environment().put("JAVA_TOOL_OPTIONS", "-Dfile.encoding=UTF-8");
         }
-        
+
         pb.redirectErrorStream(true);
         Process p = pb.start();
-        
+
         Thread outputThread = new Thread(() -> {
             try (BufferedReader reader = new BufferedReader(
                     new InputStreamReader(p.getInputStream(), StandardCharsets.UTF_8))) {
@@ -215,23 +297,23 @@ public class Bootstrap {
             } catch (Exception ignored) {}
         });
         outputThread.start();
-        
+
         int code = p.waitFor();
         try { outputThread.interrupt(); } catch (Exception ignored) {}
         log("Exited with code: " + code);
         System.exit(code);
     }
-    
+
     private static Path findJava() {
         String os = System.getProperty("os.name").toLowerCase();
         String javaExe = os.contains("windows") ? "java.exe" : "java";
-        
+
         Path javaBin = baseDir.resolve("jre21").resolve("bin").resolve(javaExe);
-        
+
         if (!Files.exists(javaBin)) {
             javaBin = Paths.get(System.getProperty("java.home"), "bin", javaExe);
         }
-        
+
         if (!Files.exists(javaBin)) {
             try {
                 Process p = new ProcessBuilder("which", javaExe).start();
@@ -245,11 +327,11 @@ public class Bootstrap {
                 }
             } catch (Exception ignored) {}
         }
-        
+
         if (!Files.exists(javaBin)) {
             throw new RuntimeException("Java not found. Make sure jre21 is present in the launcher folder or Java is installed on the system");
         }
-        
+
         return javaBin;
     }
 }

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/api/LauncherAPI.java

@@ -144,18 +144,15 @@ public class LauncherAPI {
     private static int compareVersions(String a, String b) {
         String[] partsA = a.split("\\.");
         String[] partsB = b.split("\\.");
-        int len = Math.min(partsA.length, partsB.length);
-        for (int i = 0; i < len; i++) {
+        int max = Math.max(partsA.length, partsB.length);
+        for (int i = 0; i < max; i++) {
             try {
-                int numA = Integer.parseInt(partsA[i]);
-                int numB = Integer.parseInt(partsB[i]);
+                int numA = i < partsA.length ? Integer.parseInt(partsA[i]) : 0;
+                int numB = i < partsB.length ? Integer.parseInt(partsB[i]) : 0;
                 if (numA != numB) return Integer.compare(numB, numA);
-            } catch (NumberFormatException e) {
-                int cmp = partsA[i].compareTo(partsB[i]);
-                if (cmp != 0) return cmp;
-            }
+            } catch (NumberFormatException ignored) {}
         }
-        return Integer.compare(partsB.length, partsA.length);
+        return 0;
     }
 
     private boolean isNeoForgeCompatible(String version, String mcVersion) {

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/MinecraftLib.java

@@ -1,8 +1,7 @@
 package me.sashegdev.zernmc.launcher.minecraft;
 
 import me.sashegdev.zernmc.launcher.minecraft.installer.FabricInstaller;
-import me.sashegdev.zernmc.launcher.minecraft.installer.ForgeInstaller;
-import me.sashegdev.zernmc.launcher.minecraft.installer.NeoForgeInstaller;
+import me.sashegdev.zernmc.launcher.minecraft.installer.ModLoaderInstaller;
 import me.sashegdev.zernmc.launcher.minecraft.installer.VersionInstaller;
 import me.sashegdev.zernmc.launcher.minecraft.launch.LaunchCommandBuilder;
 import me.sashegdev.zernmc.launcher.minecraft.model.LaunchOptions;
@@ -45,13 +44,13 @@ public class MinecraftLib {
     }
 
     public boolean installForge(String minecraftVersion, String forgeVersion) throws Exception {
-       ForgeInstaller installer = new ForgeInstaller(instance);
-       return installer.install(minecraftVersion, forgeVersion);
+       return new ModLoaderInstaller(instance)
+               .install(minecraftVersion, forgeVersion, ModLoaderInstaller.LoaderType.FORGE);
     }
 
     public boolean installNeoForge(String minecraftVersion, String neoforgeVersion) throws Exception {
-       NeoForgeInstaller installer = new NeoForgeInstaller(instance);
-       return installer.install(minecraftVersion, neoforgeVersion);
+       return new ModLoaderInstaller(instance)
+               .install(minecraftVersion, neoforgeVersion, ModLoaderInstaller.LoaderType.NEOFORGE);
     }
 
     public boolean installFabric(String minecraftVersion, String loaderVersion) throws Exception {
@@ -123,6 +122,15 @@ public class MinecraftLib {
         ProcessBuilder pb = new ProcessBuilder(command);
         pb.directory(instance.getPath().toFile());
 
+        // Write launch command to file for debugging
+        Path cmdLogFile = instance.getPath().resolve("launch-command.log");
+        try {
+            Files.writeString(cmdLogFile, String.join(" \\\n  ", command));
+            System.out.println(ZAnsi.green("  Launch command written to " + cmdLogFile.toAbsolutePath()));
+        } catch (Exception e) {
+            System.out.println(ZAnsi.yellow("  Failed to write launch command log: " + e.getMessage()));
+        }
+
         System.out.println(ZAnsi.brightGreen("\nStarting Minecraft...\n"));
         ConsoleUtils.clearScreen();
 

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/PackDownloader.java

@@ -177,8 +177,10 @@ public class PackDownloader {
         
         if (needsMinecraftInstall) {
             LauncherLogger.info("installOrUpdatePack: needs Minecraft install. loader=" + manifest.getLoaderType() + " loaderVer=" + manifest.getLoaderVersion());
+            reportProgress("Installing " + manifest.getMinecraftVersion() + " with " + manifest.getLoaderType() + "...", 10, "Installing pack files", 4, 5);
             if ("fabric".equalsIgnoreCase(manifest.getLoaderType())) {
                 LauncherLogger.info("installOrUpdatePack: installing Fabric mc=" + manifest.getMinecraftVersion() + " loader=" + manifest.getLoaderVersion());
+                reportProgress("Installing Fabric " + manifest.getLoaderVersion() + "...", 15, "Installing pack files", 4, 5);
                 boolean success = lib.installFabric(manifest.getMinecraftVersion(), manifest.getLoaderVersion());
                 LauncherLogger.info("installOrUpdatePack: Fabric install result=" + success);
                 if (!success) {
@@ -189,6 +191,7 @@ public class PackDownloader {
                 }
             } else if ("neoforge".equalsIgnoreCase(manifest.getLoaderType())) {
                 LauncherLogger.info("installOrUpdatePack: installing NeoForge mc=" + manifest.getMinecraftVersion() + " loader=" + manifest.getLoaderVersion());
+                reportProgress("Installing NeoForge " + manifest.getLoaderVersion() + "...", 15, "Installing pack files", 4, 5);
                 boolean success = lib.installNeoForge(manifest.getMinecraftVersion(), manifest.getLoaderVersion());
                 LauncherLogger.info("installOrUpdatePack: NeoForge install result=" + success);
                 if (!success) {
@@ -199,6 +202,7 @@ public class PackDownloader {
                 }
             } else if ("forge".equalsIgnoreCase(manifest.getLoaderType())) {
                 LauncherLogger.info("installOrUpdatePack: installing Forge mc=" + manifest.getMinecraftVersion() + " loader=" + manifest.getLoaderVersion());
+                reportProgress("Installing Forge " + manifest.getLoaderVersion() + "...", 15, "Installing pack files", 4, 5);
                 boolean success = lib.installForge(manifest.getMinecraftVersion(), manifest.getLoaderVersion());
                 LauncherLogger.info("installOrUpdatePack: Forge install result=" + success);
                 if (!success) {
@@ -209,6 +213,7 @@ public class PackDownloader {
                 }
             } else {
                 LauncherLogger.info("installOrUpdatePack: installing Vanilla Minecraft " + manifest.getMinecraftVersion());
+                reportProgress("Installing Vanilla Minecraft...", 15, "Installing pack files", 4, 5);
                 boolean success = lib.installMinecraft(manifest.getMinecraftVersion());
                 LauncherLogger.info("installOrUpdatePack: Vanilla install result=" + success);
                 if (!success) {

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/installer/FabricInstaller.java

@@ -6,20 +6,13 @@ import me.sashegdev.zernmc.launcher.utils.ZAnsi;
 import me.sashegdev.zernmc.launcher.utils.ZHttpClient;
 
 import java.io.IOException;
-import java.net.URI;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
-import java.net.http.HttpResponse;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.time.Duration;
+import java.util.concurrent.TimeUnit;
 
 public class FabricInstaller {
 
     private final Instance instance;
-    private final HttpClient httpClient = HttpClient.newBuilder()
-            .connectTimeout(Duration.ofSeconds(15))
-            .build();
 
     public FabricInstaller(Instance instance) {
         this.instance = instance;
@@ -68,7 +61,13 @@ public class FabricInstaller {
         pb.redirectError(ProcessBuilder.Redirect.INHERIT);
 
         Process process = pb.start();
-        int exitCode = process.waitFor();
+        boolean finished = process.waitFor(10, TimeUnit.MINUTES);
+        if (!finished) {
+            process.destroyForcibly();
+            System.out.println(ZAnsi.brightRed("Fabric Installer timed out after 10 minutes"));
+            return false;
+        }
+        int exitCode = process.exitValue();
 
         if (exitCode != 0) {
             System.out.println(ZAnsi.brightRed("Fabric Installer failed (code " + exitCode + ")"));
@@ -166,48 +165,11 @@ public class FabricInstaller {
         }
     }
 
-    // under refactor - keep
     private String downloadString(String url) throws Exception {
-        Exception lastException = null;
-
-        for (int attempt = 1; attempt <= 3; attempt++) {
-            try {
-                HttpRequest request = HttpRequest.newBuilder()
-                        .uri(URI.create(url))
-                        .timeout(Duration.ofSeconds(30 * attempt))
-                        .header("User-Agent", "ZernMC-Launcher/1.0")
-                        .GET()
-                        .build();
-
-                HttpResponse<String> resp = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
-                if (resp.statusCode() == 200) {
-                    return resp.body();
-                }
-                throw new IOException("HTTP " + resp.statusCode());
-            } catch (Exception e) {
-                lastException = e;
-                System.out.println(ZAnsi.yellow("Attempt " + attempt + " failed: " + e.getMessage()));
-                if (attempt < 3) {
-                    Thread.sleep(1000 * attempt);
-                }
-            }
-        }
-
-        throw lastException;
+        return ZHttpClient.getWithSmartProxy(url);
     }
 
     private void downloadFile(String url, Path target) throws Exception {
-        HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(url))
-                .timeout(Duration.ofSeconds(60))
-                .GET()
-                .build();
-        
-        HttpResponse<Path> response = httpClient.send(request, 
-                HttpResponse.BodyHandlers.ofFile(target));
-        
-        if (response.statusCode() != 200) {
-            throw new IOException("HTTP " + response.statusCode() + " when downloading " + url);
-        }
+        ZHttpClient.downloadFileWithSmartProxy(url, target);
     }
 }

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/installer/ModLoaderInstaller.java

@@ -0,0 +1,262 @@
+package me.sashegdev.zernmc.launcher.minecraft.installer;
+
+import me.sashegdev.zernmc.launcher.minecraft.Instance;
+import me.sashegdev.zernmc.launcher.utils.ZAnsi;
+import me.sashegdev.zernmc.launcher.utils.ZHttpClient;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+
+public class ModLoaderInstaller {
+
+    public enum LoaderType {
+        FORGE("forge", "net.minecraftforge", "forge", "https://maven.minecraftforge.net"),
+        NEOFORGE("neoforge", "net.neoforged", null, "https://maven.neoforged.net/releases");
+
+        final String loaderName;
+        final String mavenGroup;
+        final String fixedArtifact;
+        final String mavenBase;
+
+        LoaderType(String loaderName, String mavenGroup, String fixedArtifact, String mavenBase) {
+            this.loaderName = loaderName;
+            this.mavenGroup = mavenGroup;
+            this.fixedArtifact = fixedArtifact;
+            this.mavenBase = mavenBase;
+        }
+
+        public String artifact(String mcVersion) {
+            if (this == NEOFORGE && !"1.20.1".equals(mcVersion)) return "neoforge";
+            return "forge";
+        }
+    }
+
+    private final Instance instance;
+
+    public ModLoaderInstaller(Instance instance) {
+        this.instance = instance;
+    }
+
+    public boolean install(String mcVersion, String loaderVersion, LoaderType type) throws Exception {
+        System.out.println(ZAnsi.cyan("Installing " + type.loaderName + " " + loaderVersion + " for Minecraft " + mcVersion));
+
+        System.out.println(ZAnsi.cyan("Installing base Minecraft version " + mcVersion + "..."));
+        VersionInstaller vanillaInstaller = new VersionInstaller(instance.getPath());
+        String assetIndex = vanillaInstaller.install(mcVersion);
+
+        if (assetIndex == null || assetIndex.isEmpty()) {
+            System.out.println(ZAnsi.brightRed("Failed to install base Minecraft version"));
+            return false;
+        }
+
+        instance.setAssetIndex(assetIndex);
+        createLauncherProfile();
+
+        String installerUrl = buildInstallerUrl(mcVersion, loaderVersion, type);
+        String jarName = type.loaderName + "-installer.jar";
+        Path installerJar = instance.getPath().resolve(jarName);
+
+        System.out.println(ZAnsi.cyan("Downloading " + type.loaderName + " Installer..."));
+        ZHttpClient.downloadFileWithSmartProxy(installerUrl, installerJar);
+
+        System.out.println(ZAnsi.cyan("Running " + type.loaderName + " Installer..."));
+        System.out.println(ZAnsi.yellow("This may take a few minutes. Please wait...\n"));
+
+        boolean success = runInstaller(installerJar, type);
+
+        if (success) {
+            try {
+                downloadMissingLibraries(type);
+            } catch (Exception e) {
+                System.out.println(ZAnsi.yellow("Warning: could not download some libraries: " + e.getMessage()));
+            }
+
+            System.out.println(ZAnsi.brightGreen("\n" + type.loaderName + " " + loaderVersion + " installed successfully!"));
+            instance.setMinecraftVersion(mcVersion);
+            instance.setLoaderType(type.loaderName);
+            instance.setLoaderVersion(loaderVersion);
+
+            Files.deleteIfExists(installerJar);
+            return true;
+        } else {
+            System.out.println(ZAnsi.brightRed("\nError installing " + type.loaderName + "!"));
+            return false;
+        }
+    }
+
+    private String buildInstallerUrl(String mcVersion, String loaderVersion, LoaderType type) {
+        if (type == LoaderType.FORGE) {
+            return type.mavenBase + "/" + type.mavenGroup.replace('.', '/')
+                    + "/" + type.fixedArtifact + "/" + mcVersion + "-" + loaderVersion
+                    + "/" + type.fixedArtifact + "-" + mcVersion + "-" + loaderVersion + "-installer.jar";
+        }
+
+        String artifact = type.artifact(mcVersion);
+        return type.mavenBase + "/" + type.mavenGroup.replace('.', '/')
+                + "/" + artifact + "/" + loaderVersion
+                + "/" + artifact + "-" + loaderVersion + "-installer.jar";
+    }
+
+    private void createLauncherProfile() throws IOException {
+        Path profilePath = instance.getPath().resolve("launcher_profiles.json");
+        if (Files.exists(profilePath)) return;
+
+        String minimalProfile = """
+                {
+                  "profiles": {},
+                  "selectedProfile": "Default"
+                }
+                """;
+        Files.writeString(profilePath, minimalProfile, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
+        System.out.println(ZAnsi.yellow("Created launcher_profiles.json"));
+    }
+
+    private boolean runInstaller(Path installerJar, LoaderType type) throws IOException, InterruptedException {
+        int maxRetries = 3;
+        int attempt = 1;
+
+        while (attempt <= maxRetries) {
+            System.out.println(ZAnsi.cyan("Attempt " + attempt + " of " + maxRetries));
+
+            ProcessBuilder pb = new ProcessBuilder(
+                    "java",
+                    "-jar",
+                    installerJar.toAbsolutePath().toString(),
+                    "--installClient",
+                    instance.getPath().toAbsolutePath().toString()
+            );
+
+            pb.environment().put("JAVA_OPTS", "-Dhttp.connectionTimeout=60000 -Dhttp.socketTimeout=60000");
+            pb.directory(instance.getPath().toFile());
+            pb.redirectErrorStream(true);
+
+            Process process = pb.start();
+
+            StringBuilder output = new StringBuilder();
+            boolean hasErrors = false;
+
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    output.append(line).append("\n");
+
+                    if (line.contains("Downloading") || line.contains("Extracting")) {
+                        System.out.println(ZAnsi.blue("  -> " + line));
+                    } else if (line.contains("SUCCESS") || line.contains("successfully")) {
+                        System.out.println(ZAnsi.brightGreen("  + " + line));
+                    } else if (line.contains("WARNING") || line.contains("warning")) {
+                        System.out.println(ZAnsi.yellow("  ! " + line));
+                    } else if (line.contains("ERROR") || line.contains("error") || line.contains("failed") || line.contains("timed out")) {
+                        System.out.println(ZAnsi.brightRed("  X " + line));
+                        if (line.contains("timed out") || line.contains("failed to download")) {
+                            hasErrors = true;
+                        }
+                    } else if (!line.isBlank()) {
+                        System.out.println("  " + line);
+                    }
+                }
+            }
+
+            int exitCode;
+            if (hasErrors) {
+                process.destroyForcibly();
+                exitCode = 1;
+            } else {
+                if (!process.waitFor(10, TimeUnit.MINUTES)) {
+                    process.destroyForcibly();
+                    System.out.println(ZAnsi.brightRed(type.loaderName + " Installer timed out after 10 minutes"));
+                    if (attempt < maxRetries) {
+                        attempt++;
+                        Thread.sleep(5000);
+                        continue;
+                    }
+                    return false;
+                }
+                exitCode = process.exitValue();
+            }
+
+            if (exitCode == 0) {
+                return true;
+            }
+
+            if (attempt < maxRetries) {
+                System.out.println(ZAnsi.yellow("Install error. Retrying in 5 seconds..."));
+                Thread.sleep(5000);
+
+                Path librariesDir = instance.getPath().resolve("libraries");
+                if (Files.exists(librariesDir)) {
+                    try (var stream = Files.walk(librariesDir)) {
+                        stream.filter(p -> p.toString().contains("asm") && p.toString().endsWith(".jar"))
+                              .forEach(p -> {
+                                  try { Files.deleteIfExists(p); }
+                                  catch (IOException e) { /* ignore */ }
+                              });
+                    }
+                }
+            } else {
+                System.out.println(ZAnsi.brightRed(type.loaderName + " Installer exited with error code: " + exitCode));
+
+                if (output.toString().contains("timed out")) {
+                    System.out.println(ZAnsi.yellow("\nPossible solutions:"));
+                    System.out.println(ZAnsi.yellow("1. Check your internet connection"));
+                    System.out.println(ZAnsi.yellow("2. Run the launcher as administrator"));
+                    System.out.println(ZAnsi.yellow("3. Temporarily disable antivirus/firewall"));
+                    System.out.println(ZAnsi.yellow("4. Try installing a different version"));
+                }
+            }
+
+            attempt++;
+        }
+
+        return false;
+    }
+
+    private void downloadMissingLibraries(LoaderType type) throws Exception {
+        System.out.println(ZAnsi.cyan("Checking and downloading missing libraries..."));
+
+        Map<String, List<String>> alternativeUrls = new LinkedHashMap<>();
+        alternativeUrls.put("org/ow2/asm/asm/9.6/asm-9.6.jar", List.of(
+            "https://repo1.maven.org/maven2/org/ow2/asm/asm/9.6/asm-9.6.jar",
+            "https://mirrors.huaweicloud.com/repository/maven/org/ow2/asm/asm/9.6/asm-9.6.jar"
+        ));
+
+        if (type == LoaderType.NEOFORGE) {
+            alternativeUrls.put("org/ow2/asm/asm-commons/9.6/asm-commons-9.6.jar", List.of(
+                "https://repo1.maven.org/maven2/org/ow2/asm/asm-commons/9.6/asm-commons-9.6.jar"
+            ));
+            alternativeUrls.put("org/ow2/asm/asm-tree/9.6/asm-tree-9.6.jar", List.of(
+                "https://repo1.maven.org/maven2/org/ow2/asm/asm-tree/9.6/asm-tree-9.6.jar"
+            ));
+        }
+
+        Path librariesDir = instance.getPath().resolve("libraries");
+
+        for (Map.Entry<String, List<String>> entry : alternativeUrls.entrySet()) {
+            Path target = librariesDir.resolve(entry.getKey());
+            if (!Files.exists(target)) {
+                Files.createDirectories(target.getParent());
+                System.out.println(ZAnsi.yellow("Downloading: " + target.getFileName()));
+
+                boolean downloaded = false;
+                for (String mirrorUrl : entry.getValue()) {
+                    for (int attempt = 1; attempt <= 3; attempt++) {
+                        try {
+                            ZHttpClient.downloadFileWithSmartProxy(mirrorUrl, target);
+                            downloaded = true;
+                            break;
+                        } catch (Exception e) {
+                            if (attempt == 3 && mirrorUrl.equals(entry.getValue().get(entry.getValue().size() - 1))) throw e;
+                            System.out.println(ZAnsi.yellow("Retry " + attempt + "/3..."));
+                            Thread.sleep(2000);
+                        }
+                    }
+                    if (downloaded) break;
+                }
+            }
+        }
+    }
+}

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/installer/VersionInstaller.java

@@ -3,43 +3,38 @@ package me.sashegdev.zernmc.launcher.minecraft.installer;
 import me.sashegdev.zernmc.launcher.minecraft.model.MinecraftVersion;
 import me.sashegdev.zernmc.launcher.utils.ProgressBar;
 import me.sashegdev.zernmc.launcher.utils.ZAnsi;
+import me.sashegdev.zernmc.launcher.utils.ZHttpClient;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
-import java.io.IOException;
 import java.io.InputStream;
-import java.net.URI;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
-import java.net.http.HttpResponse;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
-import java.time.Duration;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.CancellationException;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
 public class VersionInstaller {
 
     private final Path minecraftDir;
-    private final HttpClient httpClient;
     private final ExecutorService executor = Executors.newFixedThreadPool(32);
 
     public VersionInstaller(Path minecraftDir) {
         this.minecraftDir = minecraftDir;
-        this.httpClient = HttpClient.newBuilder()
-                .connectTimeout(Duration.ofSeconds(15))
-                .build();
     }
 
     public List<MinecraftVersion> getAvailableVersions() throws Exception {
-        String jsonString = downloadString("https://piston-meta.mojang.com/mc/game/version_manifest_v2.json");
+        String jsonString = ZHttpClient.getWithSmartProxy("https://piston-meta.mojang.com/mc/game/version_manifest_v2.json");
         JSONObject root = new JSONObject(jsonString);
         JSONArray versionsArray = root.getJSONArray("versions");
 
@@ -70,16 +65,28 @@ public class VersionInstaller {
         if (versionUrl == null) throw new Exception("Version " + versionId + " not found");
 
         ProgressBar.show("Fetching version info", 0, 1, "files");
-        String versionJson = downloadString(versionUrl);
-        Files.writeString(versionDir.resolve(versionId + ".json"), versionJson);
+        String versionJson;
+        try {
+            versionJson = ZHttpClient.getWithSmartProxy(versionUrl);
+            Files.writeString(versionDir.resolve(versionId + ".json"), versionJson);
+        } catch (Exception e) {
+            System.err.println(ZAnsi.red("[VERSION] Failed to fetch version info: " + e.getMessage()));
+            throw e;
+        }
         ProgressBar.show("Version info", 1, 1, "files");
 
         JSONObject versionData = new JSONObject(versionJson);
 
         // client.jar
         ProgressBar.show("Downloading client.jar", 0, 1, "files");
-        downloadFile(versionData.getJSONObject("downloads").getJSONObject("client").getString("url"),
-                versionDir.resolve(versionId + ".jar"), "client.jar");
+        try {
+            ZHttpClient.downloadFileWithSmartProxy(
+                    versionData.getJSONObject("downloads").getJSONObject("client").getString("url"),
+                    versionDir.resolve(versionId + ".jar"));
+        } catch (Exception e) {
+            System.err.println(ZAnsi.red("[VERSION] Failed to download client.jar: " + e.getMessage()));
+            throw e;
+        }
         ProgressBar.show("Client.jar", 1, 1, "files");
 
         // Libraries
@@ -147,7 +154,7 @@ public class VersionInstaller {
             if (!Files.exists(libJar)) {
                 try {
                     Files.createDirectories(libJar.getParent());
-                    downloadFile(url, libJar, "");
+                    ZHttpClient.downloadFileWithSmartProxy(url, libJar);
                 } catch (Exception e) {
                     failed++;
                     continue;
@@ -199,9 +206,9 @@ public class VersionInstaller {
                 Files.createDirectories(target.getParent());
 
                 try {
-                    downloadFile(url, target, "library");
+                    ZHttpClient.downloadFileWithSmartProxy(url, target);
                 } catch (Exception e) {
-                    // Skip problematic libraries
+                    System.err.println(ZAnsi.yellow("[LIB] Failed to download " + path + ": " + e.getMessage()));
                 }
             }
             count++;
@@ -220,7 +227,7 @@ public class VersionInstaller {
         Path indexPath = indexesDir.resolve(assetIndex + ".json");
 
         System.out.println(ZAnsi.cyan("Downloading asset index (" + assetIndex + ")..."));
-        downloadFile(indexUrl, indexPath, "asset index");
+        ZHttpClient.downloadFileWithSmartProxy(indexUrl, indexPath);
 
         String jsonContent = Files.readString(indexPath);
         JSONObject root = new JSONObject(jsonContent);
@@ -249,20 +256,20 @@ public class VersionInstaller {
                 boolean downloaded = false;
                 for (int attempt = 1; attempt <= 3; attempt++) {
                     try {
-                        downloadFile(url, target, "");
+                        ZHttpClient.downloadFileWithSmartProxy(url, target);
+                        synchronized (this) {
+                            success[0]++;
+                            ProgressBar.show("Assets", success[0], total, "files");
+                        }
+                        downloaded = true;
+                        break;
+                    } catch (Exception e) {
+                        if (attempt == 3) {
                             synchronized (this) {
-                                success[0]++;
-                                ProgressBar.show("Assets", success[0], total, "files");
+                                failed[0]++;
                             }
-                            downloaded = true;
-                            break;
-                        } catch (Exception e) {
-                            if (attempt == 3) {
-                                synchronized (this) {
-                                    failed[0]++;
-                                }
-                                System.err.println("Failed to download " + hash);
-                            } else {
+                            System.err.println("Failed to download " + hash);
+                        } else {
                             try { Thread.sleep(500 * attempt); } catch (InterruptedException ignored) {}
                         }
                     }
@@ -272,8 +279,17 @@ public class VersionInstaller {
             futures.add(future);
         }
 
-        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
-        executor.shutdown();
+        try {
+            CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]))
+                    .get(10, TimeUnit.MINUTES);
+        } catch (TimeoutException e) {
+            futures.forEach(f -> f.cancel(true));
+            System.err.println("Asset download timed out after 10 minutes");
+        } catch (CancellationException e) {
+            // one of the futures was cancelled
+        } catch (CompletionException e) {
+            // one of the futures failed exceptionally
+        }
 
         ProgressBar.finish("Assets downloaded (" + success[0] + " ok, " + failed[0] + " skipped)");
 
@@ -287,13 +303,13 @@ public class VersionInstaller {
         String versionUrl = getVersionUrl(versionId);
         if (versionUrl == null) throw new Exception("Version not found");
 
-        String versionJson = downloadString(versionUrl);
+        String versionJson = ZHttpClient.getWithSmartProxy(versionUrl);
         JSONObject versionData = new JSONObject(versionJson);
 
         if (versionData.has("assetIndex") && versionData.getJSONObject("assetIndex").has("id")) {
-            return versionData.getJSONObject("assetIndex").getString("id");  // "5" для 1.20.1
+            return versionData.getJSONObject("assetIndex").getString("id");
         }
-        return versionData.getString("assets"); // fallback (very old versions)
+        return versionData.getString("assets");
     }
 
     private String getVersionUrl(String versionId) throws Exception {
@@ -302,35 +318,4 @@ public class VersionInstaller {
         }
         return null;
     }
-
-    private String downloadString(String url) throws Exception {
-        HttpRequest req = HttpRequest.newBuilder().uri(URI.create(url)).GET().build();
-        HttpResponse<String> resp = httpClient.send(req, HttpResponse.BodyHandlers.ofString());
-        if (resp.statusCode() != 200) throw new IOException("HTTP " + resp.statusCode());
-        return resp.body();
-    }
-
-    private void downloadFile(String url, Path target, String label) throws Exception {
-        if (!label.isEmpty()) {
-            ProgressBar.clearLine();
-            System.out.println(ZAnsi.cyan("Downloading " + label + "..."));
-        }
-
-        HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(url))
-                .GET()
-                .build();
-
-        HttpResponse<Path> response = httpClient.send(request, HttpResponse.BodyHandlers.ofFile(target));
-
-        if (response.statusCode() != 200) {
-            if (label.isEmpty()) return; // for assets silently
-            throw new IOException("HTTP " + response.statusCode() + " while downloading " + label);
-        }
-
-        if (!label.isEmpty()) {
-            long size = Files.size(target);
-            ProgressBar.finish(label + " (" + ProgressBar.formatBytes(size) + ")");
-        }
-    }
-}
+}

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/minecraft/launch/LaunchCommandBuilder.java

@@ -85,23 +85,14 @@ public class LaunchCommandBuilder {
 
             String cpFile = writeClasspathFile(classpath);
 
-            // DEBUG: print classpath entries to identify split-package sources
-            String sep = System.getProperty("os.name").toLowerCase().contains("win") ? ";" : ":";
-            System.out.println(ZAnsi.cyan("  === CLASSPATH ENTRIES (" + classpath.split(sep.replace("\\","\\\\")).length + " jars) ==="));
-            for (String entry : classpath.split(sep.replace("\\","\\\\"))) {
-                String fileName = entry.contains("/") ? entry.substring(entry.lastIndexOf('/') + 1) : entry.substring(entry.lastIndexOf('\\') + 1);
-                System.out.println(ZAnsi.cyan("  CP: " + fileName));
-            }
-            System.out.println(ZAnsi.cyan("  === END CLASSPATH ==="));
-
             // Build variable map for placeholder substitution
             Map<String, String> vars = buildVariableMap(options);
             vars.put("classpath", cpFile);
 
-            // Parse ALL version.json JVM args (merged with parent) with placeholder
-            // substitution. This includes -Djava.library.path, -cp, --add-modules,
-            // --add-opens, etc. — everything the launcher needs.
-            List<String> allJvmArgs = manifest != null ? manifest.getAllJvmArguments() : new ArrayList<>();
+            // Parse version.json JVM args (child only). Forge/NeoForge defines its own
+            // -p, --add-modules, --add-opens. -Djava.library.path is NOT in child args,
+            // so it's added manually below.
+            List<String> allJvmArgs = manifest != null ? manifest.getJvmArguments() : new ArrayList<>();
             if (!allJvmArgs.isEmpty()) {
                 for (String arg : allJvmArgs) {
                     String resolved = resolveVariable(arg, vars);
@@ -113,11 +104,11 @@ public class LaunchCommandBuilder {
             } else {
                 System.out.println(ZAnsi.yellow("  WARNING: No JVM args in version.json, using manual fallback"));
                 command.addAll(getJvmArguments(options));
-                command.add("-Djava.library.path=" + nativesDir.toAbsolutePath());
-                command.add("-cp");
-                command.add(cpFile);
             }
 
+            // Forge/NeoForge child version.json doesn't include -Djava.library.path
+            command.add("-Djava.library.path=" + nativesDir.toAbsolutePath());
+
             // Append memory/GC args (always after version.json args, like AstralRinth)
             int ramMB = options.getMaxMemory() > 0 ? options.getMaxMemory() : 4096;
             command.add("-Xmx" + ramMB + "M");
@@ -147,9 +138,9 @@ public class LaunchCommandBuilder {
             }
             command.add(mainClass);
 
-            // Parse ALL version.json game args (merged with parent) with placeholder
-            // substitution. This includes --launchTarget, --fml.forgeVersion,
-            // --fml.mcVersion, --version, --gameDir, --assetsDir, etc.
+            // Parse version.json game args (merged with parent) with placeholder
+            // substitution. Parent provides --username, --version, etc.;
+            // child provides --launchTarget, --fml.*.
             List<String> allGameArgs = manifest != null ? manifest.getAllGameArguments() : new ArrayList<>();
             if (!allGameArgs.isEmpty()) {
                 for (String arg : allGameArgs) {

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/ui/jfx/JFXLauncher.java

@@ -802,7 +802,7 @@ public class JFXLauncher extends Application {
                             setInstallProgressWithStage("Installation failed", 0, 100, "Failed", 0, 1);
                             log("Install error: " + name);
                         }
-                    } catch (Exception e) {
+                    } catch (Throwable e) {
                         log("Install error: " + e.getMessage());
                         setInstallInProgress(false);
                         setInstallProgressWithStage("Error: " + e.getMessage(), 0, 100, "Error", 0, 1);
@@ -1229,6 +1229,12 @@ public class JFXLauncher extends Application {
             log("[UI] Loaded " + content.length + " bytes: " + path);
             String ct = getContentType(path);
 
+            if (ct.startsWith("text/")) {
+                String text = new String(content, java.nio.charset.StandardCharsets.UTF_8);
+                text = text.replace("__LAUNCHER_VERSION__", me.sashegdev.zernmc.launcher.utils.Version.getCurrentVersion());
+                content = text.getBytes(java.nio.charset.StandardCharsets.UTF_8);
+            }
+
             exchange.getResponseHeaders().set("Content-Type", ct);
             exchange.sendResponseHeaders(200, content.length);
             exchange.getResponseBody().write(content);

launcher/launcher/src/main/java/sashegdev/zernmc/launcher/utils/ZHttpClient.java

@@ -18,6 +18,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 public class ZHttpClient {
@@ -25,6 +26,7 @@ public class ZHttpClient {
     private static final HttpClient client = HttpClient.newBuilder()
             .connectTimeout(Duration.ofSeconds(15))
             .version(HttpClient.Version.HTTP_1_1)
+            .executor(Executors.newCachedThreadPool())
             .build();
 
     private static String BASE_URL = "https://api.zernmc.ru";
@@ -237,6 +239,9 @@ public class ZHttpClient {
         if (url.contains("maven.neoforged.net")) return ServiceType.NEOFORGE_MAVEN;
         if (url.contains("google.com")) return ServiceType.GOOGLE;
         if (url.contains("cloudflare.com")) return ServiceType.CLOUDFLARE;
+        if (url.contains("libraries.minecraft.net")) return ServiceType.MOJANG_RESOURCES;
+        if (url.contains("piston-data.mojang.com")) return ServiceType.MOJANG_META;
+        if (url.contains("repo1.maven.org") || url.contains("repo.maven.apache.org")) return ServiceType.MOJANG_RESOURCES;
         return null;
     }
 
@@ -256,10 +261,13 @@ public class ZHttpClient {
         return cause instanceof java.net.ConnectException ||
                cause instanceof java.net.UnknownHostException ||
                cause instanceof java.nio.channels.ClosedChannelException ||
+               cause instanceof java.net.SocketException ||
                msg.contains("connection") ||
                msg.contains("timeout") ||
                msg.contains("refused") ||
-               msg.contains("closed");
+               msg.contains("closed") ||
+               msg.contains("reset") ||
+               msg.contains("abort");
     }
 
     private static void markServiceAsBlocked(String url) {
@@ -278,106 +286,148 @@ public class ZHttpClient {
 
     public static String getWithSmartProxy(String url) throws IOException, InterruptedException {
         if (!shouldUseProxyForUrl(url)) {
+            int directRetries = 3;
+            for (int directAttempt = 1; directAttempt <= directRetries; directAttempt++) {
+                try {
+                    HttpRequest request = HttpRequest.newBuilder()
+                            .uri(URI.create(url))
+                            .timeout(Duration.ofSeconds(25))
+                            .header("User-Agent", "ZernMC-Launcher/1.0")
+                            .GET()
+                            .build();
+
+                    HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+                    if (response.statusCode() == 200) {
+                        directSuccessCount++;
+                        return response.body();
+                    }
+
+                    if (response.statusCode() >= 400) {
+                        throw new IOException("HTTP " + response.statusCode());
+                    }
+                } catch (Exception e) {
+                    if (isConnectionError(e)) {
+                        directFailCount++;
+                        if (directAttempt < directRetries) {
+                            System.out.println(ZAnsi.yellow("[NET] Direct retry " + directAttempt + "/" + directRetries + " for " + url.substring(0, Math.min(60, url.length())) + "..."));
+                            try { Thread.sleep(1000 * directAttempt); } catch (InterruptedException ie) { break; }
+                            continue;
+                        }
+                        markServiceAsBlocked(url);
+                    } else {
+                        throw e;
+                    }
+                }
+                break;
+            }
+        }
+
+        int maxRetries = 3;
+        for (int attempt = 1; attempt <= maxRetries; attempt++) {
             try {
+                String encodedUrl = URLEncoder.encode(url, StandardCharsets.UTF_8);
+                String proxyUrl = BASE_URL + "/proxy/download?url=" + encodedUrl;
+
                 HttpRequest request = HttpRequest.newBuilder()
-                        .uri(URI.create(url))
-                        .timeout(Duration.ofSeconds(25))
+                        .uri(URI.create(proxyUrl))
+                        .timeout(Duration.ofSeconds(40))
                         .header("User-Agent", "ZernMC-Launcher/1.0")
                         .GET()
                         .build();
 
                 HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
 
-                if (response.statusCode() == 200) {
-                    directSuccessCount++;
-                    return response.body();
+                if (response.statusCode() != 200) {
+                    throw new IOException("Proxy HTTP " + response.statusCode());
                 }
 
-                if (response.statusCode() >= 400) {
-                    throw new IOException("HTTP " + response.statusCode());
-                }
+                proxySuccessCount++;
+                return response.body();
+
             } catch (Exception e) {
-                if (isConnectionError(e)) {
-                    directFailCount++;
-                    markServiceAsBlocked(url);
+                if (attempt == maxRetries || !isConnectionError(e)) {
+                    throw new IOException("Failed to fetch data directly or via proxy: " + e.getMessage(), e);
                 }
+                try { Thread.sleep(1000 * attempt); } catch (InterruptedException ie) { break; }
             }
         }
 
-        try {
-            String encodedUrl = URLEncoder.encode(url, StandardCharsets.UTF_8);
-            String proxyUrl = BASE_URL + "/proxy/download?url=" + encodedUrl;
-
-            HttpRequest request = HttpRequest.newBuilder()
-                    .uri(URI.create(proxyUrl))
-                    .timeout(Duration.ofSeconds(40))
-                    .header("User-Agent", "ZernMC-Launcher/1.0")
-                    .GET()
-                    .build();
-
-            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
-
-            if (response.statusCode() != 200) {
-                throw new IOException("Proxy HTTP " + response.statusCode());
-            }
-
-            proxySuccessCount++;
-            return response.body();
-
-        } catch (Exception e) {
-            throw new IOException("Failed to fetch data directly or via proxy: " + e.getMessage(), e);
-        }
+        throw new IOException("Failed to fetch data: " + url);
     }
 
     public static void downloadFileWithSmartProxy(String url, Path target) throws Exception {
         if (!shouldUseProxyForUrl(url)) {
-            try {
-                HttpRequest.Builder requestBuilder = HttpRequest.newBuilder()
-                        .uri(URI.create(url))
-                        .timeout(Duration.ofSeconds(40))
-                        .header("User-Agent", "ZernMC-Launcher/1.0")
-                        .GET();
+            int directRetries = 3;
+            for (int directAttempt = 1; directAttempt <= directRetries; directAttempt++) {
+                try {
+                    HttpRequest.Builder requestBuilder = HttpRequest.newBuilder()
+                            .uri(URI.create(url))
+                            .timeout(Duration.ofSeconds(40))
+                            .header("User-Agent", "ZernMC-Launcher/1.0")
+                            .GET();
 
-                if (url.startsWith(BASE_URL)) {
-                    String accessToken = AuthManager.getAccessToken();
-                    if (accessToken != null && !accessToken.equals("0")) {
-                        requestBuilder.header("Authorization", "Bearer " + accessToken);
+                    if (url.startsWith(BASE_URL)) {
+                        String accessToken = AuthManager.getAccessToken();
+                        if (accessToken != null && !accessToken.equals("0")) {
+                            requestBuilder.header("Authorization", "Bearer " + accessToken);
+                        }
+                    }
+
+                    HttpRequest request = requestBuilder.build();
+
+                    HttpResponse<Path> response = client.send(request, HttpResponse.BodyHandlers.ofFile(target));
+
+                    if (response.statusCode() == 200) {
+                        directSuccessCount++;
+                        return;
+                    }
+                } catch (Exception e) {
+                    if (isConnectionError(e)) {
+                        directFailCount++;
+                        if (directAttempt < directRetries) {
+                            System.out.println(ZAnsi.yellow("[NET] Direct download retry " + directAttempt + "/" + directRetries + " for " + url.substring(0, Math.min(60, url.length())) + "..."));
+                            try { Thread.sleep(1000 * directAttempt); } catch (InterruptedException ie) { break; }
+                            continue;
+                        }
+                        markServiceAsBlocked(url);
+                    } else {
+                        throw e;
                     }
                 }
-
-                HttpRequest request = requestBuilder.build();
-
-                HttpResponse<Path> response = client.send(request, HttpResponse.BodyHandlers.ofFile(target));
-
-                if (response.statusCode() == 200) {
-                    directSuccessCount++;
-                    return;
-                }
-            } catch (Exception e) {
-                if (isConnectionError(e)) {
-                    directFailCount++;
-                    markServiceAsBlocked(url);
-                }
+                break;
             }
         }
 
-        String encodedUrl = URLEncoder.encode(url, StandardCharsets.UTF_8);
-        String proxyUrl = BASE_URL + "/proxy/download?url=" + encodedUrl;
+        int maxRetries = 3;
+        for (int attempt = 1; attempt <= maxRetries; attempt++) {
+            try {
+                String encodedUrl = URLEncoder.encode(url, StandardCharsets.UTF_8);
+                String proxyUrl = BASE_URL + "/proxy/download?url=" + encodedUrl;
 
-        HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(proxyUrl))
-                .timeout(Duration.ofMinutes(5))
-                .header("User-Agent", "ZernMC-Launcher/1.0")
-                .GET()
-                .build();
+                HttpRequest request = HttpRequest.newBuilder()
+                        .uri(URI.create(proxyUrl))
+                        .timeout(Duration.ofMinutes(5))
+                        .header("User-Agent", "ZernMC-Launcher/1.0")
+                        .GET()
+                        .build();
 
-        HttpResponse<Path> response = client.send(request, HttpResponse.BodyHandlers.ofFile(target));
+                HttpResponse<Path> response = client.send(request, HttpResponse.BodyHandlers.ofFile(target));
 
-        if (response.statusCode() != 200) {
-            throw new IOException("Proxy download failed: HTTP " + response.statusCode());
+                if (response.statusCode() != 200) {
+                    throw new IOException("Proxy download failed: HTTP " + response.statusCode());
+                }
+
+                proxySuccessCount++;
+                return;
+
+            } catch (Exception e) {
+                if (attempt == maxRetries || !isConnectionError(e)) {
+                    throw new IOException("Proxy download failed: " + e.getMessage(), e);
+                }
+                try { Thread.sleep(1000 * attempt); } catch (InterruptedException ie) { break; }
+            }
         }
-
-        proxySuccessCount++;
     }
 
     public static String get(String endpoint) throws IOException, InterruptedException {

launcher/launcher/src/resources/ui/index.html

@@ -12,10 +12,10 @@
     <div id="app">
         <!-- Login Screen -->
         <div id="login-screen" class="screen">
-            <div class="login-container">
-                <div class="login-brand">
+            <div class="login-container" id="login-container">
+                <div class="login-header">
                     <div class="brand-icon">
-                        <svg width="56" height="56" viewBox="0 0 56 56" fill="none">
+                        <svg width="40" height="40" viewBox="0 0 56 56" fill="none">
                             <rect width="56" height="56" rx="14" fill="url(#brandGrad)"/>
                             <path d="M18 28 L28 18 L38 28 L28 38 Z" fill="white" opacity="0.9"/>
                             <defs>
@@ -26,25 +26,33 @@
                             </defs>
                         </svg>
                     </div>
-                    <h1 class="brand-title">ZernMC</h1>
-                    <p class="brand-sub">Launcher <span id="version" data-i18n="version">1.0.9</span></p>
+                    <h1 class="login-title" id="login-title" data-i18n="login.title">Sign In</h1>
+                    <p class="login-subtitle" id="login-subtitle" data-i18n="login.subtitle">Welcome back to ZernMC</p>
+                    <span id="version" class="hidden">__LAUNCHER_VERSION__</span>
                 </div>
 
                 <form id="login-form" class="login-form">
                     <div class="field">
-                        <input type="text" id="username" placeholder="Username" data-i18n-placeholder="login.username" autocomplete="username" required>
                         <label for="username" data-i18n="login.username">Username</label>
+                        <input type="text" id="username" autocomplete="username" required>
                     </div>
                     <div class="field">
-                        <input type="password" id="password" placeholder="Password" data-i18n-placeholder="login.password" autocomplete="current-password" required>
                         <label for="password" data-i18n="login.password">Password</label>
+                        <input type="password" id="password" autocomplete="current-password" required>
+                    </div>
+                    <div class="field hidden" id="confirm-field">
+                        <label for="confirm-password" data-i18n="login.confirm">Confirm Password</label>
+                        <input type="password" id="confirm-password" autocomplete="new-password">
                     </div>
                     <p id="login-error" class="error-msg hidden"></p>
                     <button type="submit" class="btn-primary" id="login-btn">
-                        <span class="btn-label" data-i18n="login.title">Sign In</span>
+                        <span class="btn-label" id="login-btn-label" data-i18n="login.title">Sign In</span>
                         <div class="spinner hidden"></div>
                     </button>
-                    <p class="login-hint" data-i18n="login.hint">New account will be created automatically on first login</p>
+                    <div class="login-footer" id="login-footer">
+                        <span id="footer-hint" data-i18n="login.hint">Need an account?</span>
+                        <span class="login-footer-action" id="footer-action" data-i18n="login.register">Register</span>
+                    </div>
                 </form>
             </div>
         </div>
@@ -73,7 +81,7 @@
                             </svg>
                             <div class="sidebar-brand-text">
                                 <span class="sidebar-brand-name">ZernMC</span>
-                                <span class="sidebar-brand-ver">v<span id="header-version">1.0.9</span></span>
+                                <span class="sidebar-brand-ver">v<span id="header-version">__LAUNCHER_VERSION__</span></span>
                             </div>
                         </div>
 

launcher/launcher/src/resources/ui/launcher.js

@@ -4,7 +4,15 @@ const LOCALES = {
     en: {
         'nav.packs': 'Packs', 'nav.news': 'News', 'nav.settings': 'Settings',
         'login.title': 'Sign In', 'login.username': 'Username', 'login.password': 'Password',
-        'login.hint': 'New account will be created automatically on first login',
+        'login.subtitle': 'Welcome back to ZernMC',
+        'login.hint': 'Need an account?',
+        'login.register': 'Register',
+        'login.registerTitle': 'Create Account',
+        'login.registerSubtitle': 'Join ZernMC today',
+        'login.hasAccount': 'Already have an account?',
+        'login.confirm': 'Confirm Password',
+        'login.passMismatch': 'Passwords do not match',
+        'login.passTooShort': 'Password must be at least 3 characters',
         'login.signingIn': 'Signing in...',
         'loading.text': 'Loading...',
         'sidebar.serverPacks': 'Server Packs', 'sidebar.localPacks': 'Local Packs',
@@ -180,7 +188,15 @@ const LOCALES = {
     ru: {
         'nav.packs': 'Сборки', 'nav.news': 'Новости', 'nav.settings': 'Настройки',
         'login.title': 'Вход', 'login.username': 'Логин', 'login.password': 'Пароль',
-        'login.hint': 'Новый аккаунт создаётся автоматически при первом входе',
+        'login.subtitle': 'С возвращением в ZernMC',
+        'login.hint': 'Нет аккаунта?',
+        'login.register': 'Регистрация',
+        'login.registerTitle': 'Создать аккаунт',
+        'login.registerSubtitle': 'Присоединяйтесь к ZernMC',
+        'login.hasAccount': 'Уже есть аккаунт?',
+        'login.confirm': 'Подтвердите пароль',
+        'login.passMismatch': 'Пароли не совпадают',
+        'login.passTooShort': 'Пароль должен быть минимум 3 символа',
         'login.signingIn': 'Вход...',
         'loading.text': 'Загрузка...',
         'sidebar.serverPacks': 'Серверные сборки', 'sidebar.localPacks': 'Локальные сборки',
@@ -415,28 +431,43 @@ class ZernMCLauncher {
     initBg() {
         const c = document.getElementById('bg-canvas');
         const ctx = c.getContext('2d');
-        let mx = 0, my = 0, ox = 0, oy = 0;
+        let t = 0, mode = 'login', modePulse = 0;
+
+        this.setWaveMode = m => { mode = m; modePulse = 1; };
+
+        const resize = () => { c.width = window.innerWidth; c.height = window.innerHeight; };
+        window.addEventListener('resize', resize);
 
-        const resize = () => { c.width = window.innerWidth; c.height = window.innerHeight; draw(); };
         const draw = () => {
             ctx.clearRect(0, 0, c.width, c.height);
-            const gs = 48, r = 1.2;
-            ctx.fillStyle = '#e94560';
-            for (let x = 0; x <= c.width; x += gs)
-                for (let y = 0; y <= c.height; y += gs)
-                    ctx.beginPath(), ctx.arc(x + ox * 8, y + oy * 8, r, 0, Math.PI * 2), ctx.fill();
-        };
-        window.addEventListener('resize', resize);
-        window.addEventListener('mousemove', e => {
-            mx = (e.clientX / innerWidth - 0.5) * 2;
-            my = (e.clientY / innerHeight - 0.5) * 2;
-        });
-        const anim = () => {
-            ox += (mx * 0.3 - ox) * 0.04;
-            oy += (my * 0.3 - oy) * 0.04;
-            draw();
-            requestAnimationFrame(anim);
+            const w = c.width, h = c.height;
+            modePulse += (0 - modePulse) * 0.03;
+
+            const baseAlpha = 0.04 + modePulse * 0.03;
+            const amp = 20 + modePulse * 10;
+            const freq = 0.008 + modePulse * 0.003;
+            const speed = 0.008;
+            const lines = 5;
+
+            for (let i = 0; i < lines; i++) {
+                const yOff = (h / (lines + 1)) * (i + 1);
+                const alpha = baseAlpha * (1 - i * 0.12);
+                ctx.beginPath();
+                for (let x = 0; x <= w; x += 2) {
+                    const wave = Math.sin(x * freq + t * speed + i * 1.8) * amp;
+                    const wave2 = Math.sin(x * freq * 0.5 + t * speed * 0.7 + i * 2.5) * amp * 0.5;
+                    const y = yOff + wave + wave2;
+                    x === 0 ? ctx.moveTo(x, y) : ctx.lineTo(x, y);
+                }
+                ctx.strokeStyle = `rgba(233, 69, 96, ${alpha})`;
+                ctx.lineWidth = 1.2;
+                ctx.stroke();
+            }
+
+            t++;
         };
+
+        const anim = () => { draw(); requestAnimationFrame(anim); };
         resize();
         anim();
     }
@@ -509,30 +540,37 @@ class ZernMCLauncher {
         e.preventDefault();
         const username = document.getElementById('username').value.trim();
         const password = document.getElementById('password').value;
-        console.log('handleLogin: attempting login for', username);
         const errEl = document.getElementById('login-error');
         const btn = document.getElementById('login-btn');
-        const label = btn.querySelector('.btn-label');
+        const label = document.getElementById('login-btn-label');
         const spinner = btn.querySelector('.spinner');
 
         if (!username || !password) { this.showLoginError(t('toast.enterCredentials')); return; }
 
+        if (this._registerMode) {
+            const confirm = document.getElementById('confirm-password').value;
+            if (password !== confirm) { this.showLoginError(t('login.passMismatch')); return; }
+            if (password.length < 3) { this.showLoginError(t('login.passTooShort')); return; }
+        }
+
         btn.disabled = true;
         label.textContent = t('login.signingIn');
         spinner.classList.remove('hidden');
 
-        const r = await this.req('/login', { method: 'POST', body: JSON.stringify({ username, password }) });
+        const endpoint = this._registerMode ? '/register' : '/login';
+        const r = await this.req(endpoint, { method: 'POST', body: JSON.stringify({ username, password }) });
 
         btn.disabled = false;
-        label.textContent = t('login.title');
+        label.textContent = this._registerMode ? t('login.register') : t('login.title');
         spinner.classList.add('hidden');
 
         if (r.success) {
             this.state.account = r.data;
             this.enterMain();
-            this.toast(tr('toast.welcome', null, {username: r.data.username}), 'success');
+            const key = this._registerMode ? 'toast.accountCreated' : 'toast.welcome';
+            this.toast(tr(key, null, {username: r.data.username}), 'success');
         } else {
-            if (r.error && (r.error.includes('not found') || r.error.includes('Invalid'))) {
+            if (!this._registerMode && r.error && (r.error.includes('not found') || r.error.includes('Invalid'))) {
                 var reg = await this.req('/register', { method: 'POST', body: JSON.stringify({ username, password }) });
                 if (reg.success) {
                     this.state.account = reg.data;
@@ -545,6 +583,45 @@ class ZernMCLauncher {
         }
     }
 
+    toggleMode() {
+        this._registerMode = !this._registerMode;
+        const isReg = this._registerMode;
+        const container = document.getElementById('login-container');
+        const title = document.getElementById('login-title');
+        const subtitle = document.getElementById('login-subtitle');
+        const btnLabel = document.getElementById('login-btn-label');
+        const footerHint = document.getElementById('footer-hint');
+        const footerAction = document.getElementById('footer-action');
+        const confirmField = document.getElementById('confirm-field');
+
+        container.style.transform = 'translateY(-4px)';
+        container.style.opacity = '0.6';
+
+        setTimeout(() => {
+            title.textContent = isReg ? t('login.registerTitle') : t('login.title');
+            subtitle.textContent = isReg ? t('login.registerSubtitle') : t('login.subtitle');
+            btnLabel.textContent = isReg ? t('login.register') : t('login.title');
+            footerHint.textContent = isReg ? t('login.hasAccount') : t('login.hint');
+            footerAction.textContent = isReg ? t('login.title') : t('login.register');
+
+            if (isReg) {
+                confirmField.classList.remove('hidden');
+                document.getElementById('confirm-password').required = true;
+            } else {
+                confirmField.classList.add('hidden');
+                document.getElementById('confirm-password').required = false;
+                document.getElementById('confirm-password').value = '';
+            }
+
+            document.getElementById('login-error').classList.add('hidden');
+
+            container.style.transform = '';
+            container.style.opacity = '';
+
+            if (this.setWaveMode) this.setWaveMode(isReg ? 'register' : 'login');
+        }, 150);
+    }
+
     showLoginError(msg) {
         const el = document.getElementById('login-error');
         el.textContent = msg;
@@ -600,6 +677,7 @@ class ZernMCLauncher {
     // ==================== NAV ====================
     bindEvents() {
         document.getElementById('login-form').addEventListener('submit', e => this.handleLogin(e));
+        document.getElementById('login-footer').addEventListener('click', () => this.toggleMode());
         document.getElementById('logout-btn').addEventListener('click', () => this.logout());
         document.getElementById('settings-btn').addEventListener('click', () => this.switchView('settings'));
 

launcher/launcher/src/resources/ui/style.css

@@ -59,85 +59,86 @@ body {
 
 /* ========== LOGIN ========== */
 .login-container {
+    position: relative; z-index: 1;
     background: var(--bg-elevated);
-    border: 1px solid var(--border);
-    border-radius: var(--radius-lg);
-    padding: 48px 40px 40px;
+    border-radius: var(--radius-md);
+    padding: 32px 32px 24px;
     width: 100%;
-    max-width: 380px;
-    box-shadow: var(--shadow);
-    animation: floatIn 0.5s ease forwards;
+    max-width: 360px;
+    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
+    transition: transform 0.35s ease, opacity 0.35s ease;
 }
 
-@keyframes floatIn {
-    from { opacity: 0; transform: translateY(20px); }
-    to { opacity: 1; transform: translateY(0); }
+.login-header { text-align: center; margin-bottom: 28px; overflow: hidden; }
+.brand-icon { margin-bottom: 12px; }
+.login-title {
+    font-size: 22px; font-weight: 700;
+    color: var(--text); transition: transform 0.3s ease, opacity 0.3s ease;
+}
+.login-subtitle {
+    color: var(--text-muted); font-size: 13px; margin-top: 4px;
+    transition: transform 0.3s ease, opacity 0.3s ease;
 }
 
-.login-brand { text-align: center; margin-bottom: 36px; }
-.brand-icon { margin-bottom: 16px; }
-.brand-title {
-    font-size: 28px; font-weight: 800;
-    color: var(--text);
-}
-.brand-sub { color: var(--text-muted); font-size: 13px; margin-top: 4px; }
+.login-form { display: flex; flex-direction: column; gap: 16px; }
 
-.login-form { display: flex; flex-direction: column; gap: 20px; }
-
-.field { position: relative; }
+.field { display: flex; flex-direction: column; gap: 6px; }
 .field label {
-    position: absolute; top: 50%; left: 14px; transform: translateY(-50%);
-    font-size: 13px; color: var(--text-muted);
-    transition: var(--transition); pointer-events: none;
-    background: var(--bg-elevated); padding: 0 4px;
-}
-.field input:focus + label,
-.field input:not(:placeholder-shown) + label,
-.field textarea:focus + label,
-.field textarea:not(:placeholder-shown) + label {
-    top: 0; font-size: 11px; color: var(--accent);
+    font-size: 11px; font-weight: 700;
+    text-transform: uppercase; letter-spacing: 0.5px;
+    color: var(--text-secondary);
 }
 .field input {
-    width: 100%; padding: 14px 14px; font-size: 14px;
-    background: var(--bg-surface); border: 1px solid var(--border-light);
-    border-radius: var(--radius-sm); color: var(--text);
-    font-family: var(--font); transition: var(--transition);
+    width: 100%; padding: 10px 12px; font-size: 15px;
+    background: var(--bg-surface); border: 1px solid var(--border);
+    border-radius: 4px; color: var(--text);
+    font-family: var(--font); transition: border-color 150ms ease, box-shadow 150ms ease;
     outline: none;
 }
 .field input:focus {
     border-color: var(--accent);
-    box-shadow: 0 0 0 3px var(--accent-glow);
+    box-shadow: 0 0 0 2px var(--accent-glow);
 }
 .field select {
-    width: 100%; padding: 12px 14px; font-size: 14px;
-    background: var(--bg-surface); border: 1px solid var(--border-light);
-    border-radius: var(--radius-sm); color: var(--text);
+    width: 100%; padding: 10px 12px; font-size: 15px;
+    background: var(--bg-surface); border: 1px solid var(--border);
+    border-radius: 4px; color: var(--text);
     font-family: var(--font); cursor: pointer; outline: none;
 }
 .field select:focus { border-color: var(--accent); }
+#confirm-field {
+    transition: opacity 0.3s ease, max-height 0.3s ease, margin 0.3s ease;
+    overflow: hidden; max-height: 60px; opacity: 1; margin: 0;
+}
+#confirm-field.hidden { max-height: 0; opacity: 0; margin: 0; display: block !important; padding: 0; overflow: hidden; pointer-events: none; }
 
 .btn-primary {
-    width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm);
-    background: linear-gradient(135deg, var(--accent), #ff6b6b);
-    color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
-    font-family: var(--font); transition: var(--transition);
+    width: 100%; padding: 14px; border: none; border-radius: 4px;
+    background: var(--accent); color: #fff;
+    font-size: 14px; font-weight: 600; cursor: pointer;
+    font-family: var(--font); transition: background 150ms ease, box-shadow 150ms ease;
     display: flex; align-items: center; justify-content: center; gap: 8px;
-    min-height: 48px; position: relative;
+    min-height: 44px; position: relative;
 }
-.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-glow); }
-.btn-primary:active { transform: translateY(0); }
-.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }
+.btn-primary:hover { background: #d63850; }
+.btn-primary:active { background: #c22f46; transform: scale(0.98); }
+.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
 
 .error-msg {
     color: var(--error); font-size: 13px; text-align: center;
     padding: 10px; background: rgba(248,113,113,0.1);
-    border-radius: var(--radius-sm); animation: shake 0.4s ease;
+    border-radius: 4px; animation: shake 0.4s ease;
 }
 @keyframes shake {
     0%,100%{transform:translateX(0)}20%{transform:translateX(-4px)}40%{transform:translateX(4px)}60%{transform:translateX(-3px)}80%{transform:translateX(3px)}
 }
 
-.login-hint { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 4px; }
+.login-footer {
+    display: flex; justify-content: center; gap: 4px;
+    font-size: 12px; color: var(--text-muted); margin-top: 4px;
+}
+.login-footer-action { color: var(--accent); cursor: pointer; }
+.login-footer-action:hover { text-decoration: underline; }
 
 .spinner {
     position: absolute; width: 20px; height: 20px;

launcher/launcher/src/test/java/me/sashegdev/zernmc/launcher/integration/ForgeInstallIntegrationTest.java

@@ -0,0 +1,246 @@
+package me.sashegdev.zernmc.launcher.integration;
+
+import me.sashegdev.zernmc.launcher.minecraft.Instance;
+import me.sashegdev.zernmc.launcher.minecraft.installer.ModLoaderInstaller;
+import me.sashegdev.zernmc.launcher.minecraft.installer.VersionInstaller;
+import me.sashegdev.zernmc.launcher.minecraft.launch.LaunchCommandBuilder;
+import me.sashegdev.zernmc.launcher.minecraft.model.LaunchOptions;
+import org.junit.jupiter.api.*;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.net.URL;
+import java.net.HttpURLConnection;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+@Tag("integration")
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+class ForgeInstallIntegrationTest {
+
+    private static final String MC_VERSION = "1.20.1";
+    private static final String FORGE_VERSION = "47.4.22";
+
+    private static Path instanceDir;
+    private static Instance instance;
+    private static boolean installSuccess = false;
+
+    @BeforeAll
+    static void setup() throws Exception {
+        // Check network
+        assumeTrue(networkReachable("https://maven.minecraftforge.net"),
+                "Forge maven not reachable, skipping");
+        assumeTrue(networkReachable("https://piston-meta.mojang.com"),
+                "Mojang meta not reachable, skipping");
+
+        instanceDir = Files.createTempDirectory("zernmc-forge-test-");
+        instance = new Instance("forge-test", instanceDir);
+        instance.setMinecraftVersion(MC_VERSION);
+        instance.setLoaderType("forge");
+        instance.setLoaderVersion(FORGE_VERSION);
+        instance.setAssetIndex(MC_VERSION);
+    }
+
+    @AfterAll
+    static void cleanup() throws Exception {
+        if (instanceDir != null) {
+            try (var stream = Files.walk(instanceDir)) {
+                stream.sorted((a, b) -> b.compareTo(a))
+                      .forEach(p -> {
+                          try { Files.deleteIfExists(p); } catch (Exception ignored) {}
+                      });
+            }
+        }
+    }
+
+    @Test
+    @Order(1)
+    @DisplayName("Install Minecraft vanilla 1.20.1")
+    void installMinecraft() throws Exception {
+        System.out.println("\n=== Installing Minecraft " + MC_VERSION + " ===");
+        VersionInstaller versionInstaller = new VersionInstaller(instanceDir);
+        String assetIndex = versionInstaller.install(MC_VERSION);
+        assertNotNull(assetIndex, "assetIndex must not be null after install");
+        instance.setAssetIndex(assetIndex);
+
+        // Verify version.json exists
+        Path versionJson = instanceDir.resolve("versions/" + MC_VERSION + "/" + MC_VERSION + ".json");
+        assertTrue(Files.exists(versionJson), "version.json must exist after vanilla install");
+
+        // Verify client jar exists
+        Path clientJar = instanceDir.resolve("versions/" + MC_VERSION + "/" + MC_VERSION + ".jar");
+        assertTrue(Files.exists(clientJar), "client jar must exist after vanilla install");
+
+        // Verify libraries exist
+        Path libsDir = instanceDir.resolve("libraries");
+        assertTrue(Files.exists(libsDir) && Files.list(libsDir).findAny().isPresent(),
+                "At least one library must exist after vanilla install");
+
+        System.out.println("=== Minecraft install OK ===\n");
+    }
+
+    @Test
+    @Order(2)
+    @DisplayName("Install Forge 1.20.1-47.4.22")
+    void installForge() throws Exception {
+        System.out.println("\n=== Installing Forge " + MC_VERSION + "-" + FORGE_VERSION + " ===");
+        ModLoaderInstaller installer = new ModLoaderInstaller(instance);
+        boolean success = installer.install(MC_VERSION, FORGE_VERSION, ModLoaderInstaller.LoaderType.FORGE);
+        assertTrue(success, "Forge installation must succeed");
+        installSuccess = true;
+
+        // Verify Forge version.json exists
+        String forgeVersionId = MC_VERSION + "-forge-" + FORGE_VERSION;
+        Path forgeJson = instanceDir.resolve("versions/" + forgeVersionId + "/" + forgeVersionId + ".json");
+        assertTrue(Files.exists(forgeJson), "Forge version.json must exist at " + forgeJson);
+        System.out.println("  Forge version.json size: " + Files.size(forgeJson) + " bytes\n");
+    }
+
+    @Test
+    @Order(3)
+    @DisplayName("Build launch command and verify structure")
+    void buildAndVerifyCommand() throws Exception {
+        assumeTrue(installSuccess, "Skipping: Forge install did not succeed");
+        System.out.println("\n=== Building launch command ===");
+
+        LaunchOptions options = new LaunchOptions();
+        options.setUsername("TestPlayer");
+        options.setUuid("00000000-0000-0000-0000-000000000000");
+        options.setAccessToken("test-token");
+        options.setMaxMemory(4096);
+        options.setWidth(854);
+        options.setHeight(480);
+
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+        List<String> command = builder.build(options);
+
+        // === JVM args checks ===
+        assertFalse(command.contains("-cp"),
+                "Forge must NOT have -cp (causes split-package)");
+
+        // Find -Djava.library.path (added manually, not from forge child)
+        String libPath = null;
+        for (String arg : command) {
+            if (arg != null && arg.startsWith("-Djava.library.path=")) {
+                libPath = arg;
+                break;
+            }
+        }
+        assertNotNull(libPath, "Must have -Djava.library.path");
+        assertTrue(libPath.contains("natives"), "-Djava.library.path must point to natives dir");
+
+        // Must have -p (module path) from forge child
+        int pIdx = command.indexOf("-p");
+        assertTrue(pIdx >= 0, "Must have -p");
+        String modulePath = command.get(pIdx + 1);
+        assertNotNull(modulePath, "-p must have a value");
+        assertTrue(modulePath.contains("bootstraplauncher"), "-p must include bootstraplauncher");
+
+        // Must have --add-modules + ALL-MODULE-PATH as two args (forge format)
+        int amIdx = command.indexOf("--add-modules");
+        assertTrue(amIdx >= 0, "Must have --add-modules");
+        assertEquals("ALL-MODULE-PATH", command.get(amIdx + 1),
+                "--add-modules must be followed by ALL-MODULE-PATH");
+
+        // Must have --add-opens (at least one) from forge child
+        boolean hasAddOpens = command.stream().anyMatch(a -> a != null && a.startsWith("--add-opens"));
+        assertTrue(hasAddOpens, "Must have at least one --add-opens");
+
+        // Main class
+        assertTrue(command.contains("cpw.mods.bootstraplauncher.BootstrapLauncher"),
+                "Main class must be BootstrapLauncher");
+
+        // Game args: parent (--username) + child (--launchTarget)
+        assertTrue(command.contains("--username"), "Game args must include --username from parent");
+        assertTrue(command.contains("--launchTarget"), "Game args must include --launchTarget from child");
+
+        // Memory/GC args
+        assertTrue(command.contains("-Xmx4096M"), "Must have -Xmx");
+        assertTrue(command.contains("-XX:+UseG1GC"), "Must have GC flags");
+
+        System.out.println("=== Command structure OK (" + command.size() + " args) ===\n");
+    }
+
+    @Test
+    @Order(4)
+    @DisplayName("Module path is valid (headless smoke test)")
+    void modulePathSmokeTest() throws Exception {
+        assumeTrue(installSuccess, "Skipping: Forge install did not succeed");
+        System.out.println("\n=== Module path smoke test ===");
+
+        LaunchOptions options = new LaunchOptions();
+        options.setUsername("TestPlayer");
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+        List<String> command = builder.build(options);
+
+        // Extract key args
+        String libPath = null;
+        String modulePath = null;
+
+        for (int i = 0; i < command.size(); i++) {
+            String arg = command.get(i);
+            if (arg != null) {
+                if (arg.startsWith("-Djava.library.path=")) libPath = arg;
+            }
+        }
+        int pIdx = command.indexOf("-p");
+        if (pIdx >= 0) modulePath = command.get(pIdx + 1);
+
+        // Find --add-modules + ALL-MODULE-PATH as two args
+        int amIdx = command.indexOf("--add-modules");
+        String addModules = null;
+        if (amIdx >= 0 && amIdx + 1 < command.size()) {
+            addModules = command.get(amIdx + 1);
+        }
+
+        assertNotNull(libPath, "-Djava.library.path must exist");
+        assertNotNull(modulePath, "-p must exist");
+        assertNotNull(addModules, "--add-modules must exist");
+        assertEquals("ALL-MODULE-PATH", addModules, "--add-modules must be ALL-MODULE-PATH");
+
+        // Run: java -Djava.library.path=<path> -p <mp> --add-modules ALL-MODULE-PATH -version
+        ProcessBuilder pb = new ProcessBuilder(
+            "java",
+            libPath,
+            "-p", modulePath,
+            "--add-modules", addModules,
+            "-version"
+        );
+        pb.redirectErrorStream(true);
+
+        long start = System.currentTimeMillis();
+        Process proc = pb.start();
+        String output = new String(proc.getInputStream().readAllBytes());
+        int exit = proc.waitFor();
+        long elapsed = System.currentTimeMillis() - start;
+
+        System.out.println("  JVM accepted module path in " + elapsed + "ms");
+        System.out.println("  Output: " + output.trim().replace('\n', ' '));
+        assertEquals(0, exit,
+                "JVM must accept module path without errors.\nExit: " + exit + "\nOutput: " + output);
+        System.out.println("=== Module path smoke test OK ===\n");
+    }
+
+    // ================================================================
+    // Helper
+    // ================================================================
+
+    private static boolean networkReachable(String urlStr) {
+        try {
+            URL url = new URL(urlStr);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setConnectTimeout(5000);
+            conn.setRequestMethod("GET");
+            int code = conn.getResponseCode();
+            conn.disconnect();
+            return true;
+        } catch (Exception e) {
+            System.out.println("  Network check failed for " + urlStr + ": " + e.getMessage());
+            return false;
+        }
+    }
+}

launcher/launcher/src/test/java/me/sashegdev/zernmc/launcher/minecraft/launch/LaunchCommandBuilderTest.java

@@ -0,0 +1,414 @@
+package me.sashegdev.zernmc.launcher.minecraft.launch;
+
+import me.sashegdev.zernmc.launcher.minecraft.Instance;
+import me.sashegdev.zernmc.launcher.minecraft.model.LaunchOptions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class LaunchCommandBuilderTest {
+
+    @TempDir
+    Path tempDir;
+
+    // ================================================================
+    // Helpers
+    // ================================================================
+
+    private Path createJar(Path path) throws Exception {
+        Files.createDirectories(path.getParent());
+        try (ZipOutputStream zos = new ZipOutputStream(Files.newOutputStream(path))) {
+            zos.putNextEntry(new ZipEntry("META-INF/MANIFEST.MF"));
+            zos.write("Manifest-Version: 1.0\n".getBytes());
+            zos.closeEntry();
+        }
+        return path;
+    }
+
+    private Path createJarWithModule(Path path, String moduleName) throws Exception {
+        Files.createDirectories(path.getParent());
+        try (ZipOutputStream zos = new ZipOutputStream(Files.newOutputStream(path))) {
+            zos.putNextEntry(new ZipEntry("META-INF/MANIFEST.MF"));
+            zos.write(("Manifest-Version: 1.0\nAutomatic-Module-Name: " + moduleName + "\n").getBytes());
+            zos.closeEntry();
+        }
+        return path;
+    }
+
+    private void writeVersionJson(Path path, String content) throws Exception {
+        Files.createDirectories(path.getParent());
+        Files.writeString(path, content);
+    }
+
+    // ================================================================
+    // Fixture setup
+    // ================================================================
+
+    private Instance createForgeFixture(Path dir) throws Exception {
+        String mcVer = "1.20.1";
+        String forgeVer = "47.3.0";
+        String versionId = mcVer + "-forge-" + forgeVer;
+
+        // Vanilla parent
+        String vanillaJson = """
+            {
+              "id": "1.20.1",
+              "mainClass": "net.minecraft.client.main.Main",
+              "arguments": {
+                "jvm": ["-Djava.library.path=${natives_directory}", "-cp", "${classpath}"],
+                "game": ["--username", "${auth_player_name}", "--version", "${version_name}", "--gameDir", "${game_directory}", "--assetsDir", "${assets_root}", "--assetIndex", "${assets_index_name}", "--uuid", "${auth_uuid}", "--accessToken", "${auth_access_token}", "--userType", "${user_type}", "--versionType", "${version_type}"]
+              },
+              "assetIndex": {"id": "1.20.1"},
+              "libraries": [{"name": "net.minecraft:client:1.20.1", "downloads": {"artifact": {"path": "net/minecraft/client/1.20.1/client-1.20.1.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/1.20.1/1.20.1.json"), vanillaJson);
+        createJarWithModule(dir.resolve("versions/1.20.1/1.20.1.jar"), "minecraft");
+        createJar(dir.resolve("libraries/net/minecraft/client/1.20.1/client-1.20.1.jar"));
+
+        // Forge child
+        String forgeJson = """
+            {
+              "id": "1.20.1-forge-47.3.0",
+              "inheritsFrom": "1.20.1",
+              "mainClass": "cpw.mods.bootstraplauncher.BootstrapLauncher",
+              "arguments": {
+                "jvm": ["-p", "${classpath}", "--add-modules=ALL-MODULE-PATH", "--add-opens=java.base/java.util.jar=ALL-UNNAMED", "--add-opens=java.base/java.lang.invoke=ALL-UNNAMED"],
+                "game": ["--launchTarget", "forgeclient", "--fml.forgeVersion", "47.3.0", "--fml.mcVersion", "1.20.1", "--fml.forgeGroup", "net.minecraftforge"]
+              },
+              "libraries": [{"name": "net.minecraftforge:forge:1.20.1-47.3.0", "downloads": {"artifact": {"path": "net/minecraftforge/forge/1.20.1-47.3.0/forge-1.20.1-47.3.0.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/" + versionId + "/" + versionId + ".json"), forgeJson);
+        createJar(dir.resolve("libraries/net/minecraftforge/forge/1.20.1-47.3.0/forge-1.20.1-47.3.0.jar"));
+
+        Files.createDirectories(dir.resolve("natives"));
+
+        Instance instance = new Instance("test-forge", dir);
+        instance.setMinecraftVersion(mcVer);
+        instance.setLoaderType("forge");
+        instance.setLoaderVersion(forgeVer);
+        instance.setAssetIndex(mcVer);
+        return instance;
+    }
+
+    private Instance createNeoForgeFixture(Path dir) throws Exception {
+        String mcVer = "1.20.1";
+        String neoVer = "47.1.106";
+        String versionId = mcVer + "-neoforge-" + neoVer;
+
+        String vanillaJson = """
+            {
+              "id": "1.20.1",
+              "mainClass": "net.minecraft.client.main.Main",
+              "arguments": {
+                "jvm": ["-Djava.library.path=${natives_directory}", "-cp", "${classpath}"],
+                "game": ["--username", "${auth_player_name}", "--version", "${version_name}"]
+              },
+              "assetIndex": {"id": "1.20.1"},
+              "libraries": [{"name": "net.minecraft:client:1.20.1", "downloads": {"artifact": {"path": "net/minecraft/client/1.20.1/client-1.20.1.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/1.20.1/1.20.1.json"), vanillaJson);
+        createJarWithModule(dir.resolve("versions/1.20.1/1.20.1.jar"), "minecraft");
+        createJar(dir.resolve("libraries/net/minecraft/client/1.20.1/client-1.20.1.jar"));
+
+        String neoJson = """
+            {
+              "id": "1.20.1-neoforge-47.1.106",
+              "inheritsFrom": "1.20.1",
+              "mainClass": "cpw.mods.bootstraplauncher.BootstrapLauncher",
+              "arguments": {
+                "jvm": ["-p", "${classpath}", "--add-modules=ALL-MODULE-PATH", "--add-opens=java.base/java.util.jar=ALL-UNNAMED"],
+                "game": ["--launchTarget", "neoforgeclient", "--fml.neoForgeVersion", "47.1.106", "--fml.mcVersion", "1.20.1"]
+              },
+              "libraries": [{"name": "net.neoforged:neoforge:1.20.1-47.1.106", "downloads": {"artifact": {"path": "net/neoforged/neoforge/1.20.1-47.1.106/neoforge-1.20.1-47.1.106.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/" + versionId + "/" + versionId + ".json"), neoJson);
+        createJar(dir.resolve("libraries/net/neoforged/neoforge/1.20.1-47.1.106/neoforge-1.20.1-47.1.106.jar"));
+
+        Files.createDirectories(dir.resolve("natives"));
+
+        Instance instance = new Instance("test-neoforge", dir);
+        instance.setMinecraftVersion(mcVer);
+        instance.setLoaderType("neoforge");
+        instance.setLoaderVersion(neoVer);
+        instance.setAssetIndex(mcVer);
+        instance.setFabricVersionId(versionId);
+        return instance;
+    }
+
+    private Instance createFabricFixture(Path dir) throws Exception {
+        String mcVer = "1.20.1";
+        String loaderVer = "0.16.10";
+        String versionId = "fabric-loader-" + loaderVer + "-" + mcVer;
+
+        String vanillaJson = """
+            {
+              "id": "1.20.1",
+              "mainClass": "net.minecraft.client.main.Main",
+              "arguments": {
+                "game": ["--username", "${auth_player_name}", "--version", "${version_name}"]
+              },
+              "assetIndex": {"id": "1.20.1"},
+              "libraries": [{"name": "net.minecraft:client:1.20.1", "downloads": {"artifact": {"path": "net/minecraft/client/1.20.1/client-1.20.1.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/1.20.1/1.20.1.json"), vanillaJson);
+        createJar(dir.resolve("versions/1.20.1/1.20.1.jar"));
+
+        String fabricJson = """
+            {
+              "id": "fabric-loader-0.16.10-1.20.1",
+              "inheritsFrom": "1.20.1",
+              "mainClass": "net.fabricmc.loader.impl.launch.knot.KnotClient",
+              "arguments": {
+                "game": ["--username", "${auth_player_name}"]
+              },
+              "libraries": [{"name": "net.fabricmc:fabric-loader:0.16.10", "downloads": {"artifact": {"path": "net/fabricmc/fabric-loader/0.16.10/fabric-loader-0.16.10.jar"}}}]
+            }
+            """;
+        writeVersionJson(dir.resolve("versions/" + versionId + "/" + versionId + ".json"), fabricJson);
+        createJar(dir.resolve("libraries/net/minecraft/client/1.20.1/client-1.20.1.jar"));
+        createJar(dir.resolve("libraries/net/fabricmc/fabric-loader/0.16.10/fabric-loader-0.16.10.jar"));
+
+        Files.createDirectories(dir.resolve("natives"));
+
+        Instance instance = new Instance("test-fabric", dir);
+        instance.setMinecraftVersion(mcVer);
+        instance.setLoaderType("fabric");
+        instance.setLoaderVersion(loaderVer);
+        instance.setAssetIndex(mcVer);
+        instance.setFabricVersionId(versionId);
+        return instance;
+    }
+
+    private Instance createVanillaFixture(Path dir) throws Exception {
+        Files.createDirectories(dir.resolve("natives"));
+        // No version.json — forces vanilla fallback
+        Instance instance = new Instance("test-vanilla", dir);
+        instance.setMinecraftVersion("1.21");
+        instance.setLoaderType("vanilla");
+        instance.setAssetIndex("1.21");
+        return instance;
+    }
+
+    // ================================================================
+    // Forge tests
+    // ================================================================
+
+    @Test
+    void forge_noParentJvmArgs() throws Exception {
+        Instance instance = createForgeFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Parent's -cp must NOT appear (causes split-package with child's -p)
+        assertFalse(command.contains("-cp"), "Forge must not have -cp from parent");
+
+        // -Djava.library.path must be added manually (not in child args)
+        String expectedLibPath = "-Djava.library.path=" + tempDir.resolve("natives").toAbsolutePath();
+        assertTrue(command.contains(expectedLibPath), "Forge must have -Djava.library.path");
+
+        // Child's -p (module path) must be present
+        int pIndex = command.indexOf("-p");
+        assertTrue(pIndex >= 0, "Forge must have -p");
+        assertTrue(pIndex + 1 < command.size(), "-p must have a value");
+        assertNotNull(command.get(pIndex + 1), "-p value must not be null");
+
+        // Child's --add-modules must be present
+        assertTrue(command.contains("--add-modules=ALL-MODULE-PATH"), "Forge must have --add-modules=ALL-MODULE-PATH");
+
+        // Memory/GC args
+        assertTrue(command.contains("-Xmx4096M"), "Forge must have memory args");
+        assertTrue(command.contains("-XX:+UseG1GC"), "Forge must have GC args");
+
+        // Main class
+        assertTrue(command.contains("cpw.mods.bootstraplauncher.BootstrapLauncher"), "Forge main class must be BootstrapLauncher");
+
+        // Game args: parent + child
+        int launchTargetIdx = command.indexOf("--launchTarget");
+        assertTrue(launchTargetIdx >= 0, "Game args must include child's --launchTarget");
+        assertEquals("forgeclient", command.get(launchTargetIdx + 1), "Launch target must be forgeclient");
+
+        int usernameIdx = command.indexOf("--username");
+        assertTrue(usernameIdx >= 0, "Game args must include parent's --username");
+    }
+
+    @Test
+    void forge_classpathContainsBothVanillaAndForgeLibraries() throws Exception {
+        Instance instance = createForgeFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Find -p's classpath value
+        int pIdx = command.indexOf("-p");
+        String cpValue = command.get(pIdx + 1);
+
+        // Version jar from ensureVersionJarForForge
+        assertTrue(cpValue.contains("1.20.1-forge-47.3.0.jar") || cpValue.contains("1.20.1.jar"),
+                "Classpath must include version jar");
+
+        // Forge library
+        assertTrue(cpValue.contains("forge-1.20.1-47.3.0.jar"),
+                "Classpath must include Forge library");
+
+        // Vanilla library
+        assertTrue(cpValue.contains("client-1.20.1.jar"),
+                "Classpath must include vanilla client library");
+    }
+
+    // ================================================================
+    // NeoForge tests
+    // ================================================================
+
+    @Test
+    void neoforge_noParentJvmArgs() throws Exception {
+        Instance instance = createNeoForgeFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Same checks as Forge
+        assertFalse(command.contains("-cp"), "NeoForge must not have -cp from parent");
+        String expectedLibPath = "-Djava.library.path=" + tempDir.resolve("natives").toAbsolutePath();
+        assertTrue(command.contains(expectedLibPath), "NeoForge must have -Djava.library.path");
+        assertTrue(command.contains("-p"), "NeoForge must have -p");
+        assertTrue(command.contains("--add-modules=ALL-MODULE-PATH"), "NeoForge must have --add-modules=ALL-MODULE-PATH");
+        assertTrue(command.contains("cpw.mods.bootstraplauncher.BootstrapLauncher"), "NeoForge main class must be BootstrapLauncher");
+
+        // Game args: parent + child
+        int launchTargetIdx = command.indexOf("--launchTarget");
+        assertTrue(launchTargetIdx >= 0, "Game args must include child's --launchTarget");
+        assertEquals("neoforgeclient", command.get(launchTargetIdx + 1), "Launch target must be neoforgeclient");
+        assertTrue(command.contains("--username"), "Game args must include parent's --username");
+    }
+
+    // ================================================================
+    // Fabric tests
+    // ================================================================
+
+    @Test
+    void fabric_followsVanillaArgPattern() throws Exception {
+        Instance instance = createFabricFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Fabric uses -cp (vanilla pattern), not -p
+        assertTrue(command.contains("-cp"), "Fabric must have -cp");
+        assertFalse(command.contains("-p"), "Fabric must not have -p");
+
+        // -Djava.library.path present
+        String expectedLibPath = "-Djava.library.path=" + tempDir.resolve("natives").toAbsolutePath();
+        assertTrue(command.contains(expectedLibPath), "Fabric must have -Djava.library.path");
+
+        // Main class is KnotClient
+        assertTrue(command.contains("net.fabricmc.loader.impl.launch.knot.KnotClient"),
+                "Fabric main class must be KnotClient");
+
+        // Game args from version.json (merged with parent)
+        assertTrue(command.contains("--username"), "Fabric must have game args");
+    }
+
+    // ================================================================
+    // Vanilla tests
+    // ================================================================
+
+    @Test
+    void vanilla_usesVanillaArgs() throws Exception {
+        Instance instance = createVanillaFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Vanilla uses -cp
+        assertTrue(command.contains("-cp"), "Vanilla must have -cp");
+        assertFalse(command.contains("-p"), "Vanilla must not have -p");
+
+        // -Djava.library.path present
+        String expectedLibPath = "-Djava.library.path=" + tempDir.resolve("natives").toAbsolutePath();
+        assertTrue(command.contains(expectedLibPath), "Vanilla must have -Djava.library.path");
+
+        // Memory/GC args
+        assertTrue(command.contains("-Xmx4096M"), "Vanilla must have memory args");
+        assertTrue(command.contains("-XX:+UseG1GC"), "Vanilla must have GC args");
+
+        // Main class
+        assertTrue(command.contains("net.minecraft.client.main.Main"),
+                "Vanilla main class must be net.minecraft.client.main.Main");
+
+        // Game args
+        assertTrue(command.contains("--username"), "Vanilla must have --username");
+    }
+
+    // ================================================================
+    // Headless smoke tests — run Java with constructed args to verify
+    // module path validity. No display needed, uses -version.
+    // ================================================================
+
+    @Test
+    void forge_modulePathIsValid_smoke() throws Exception {
+        Instance instance = createForgeFixture(tempDir);
+        LaunchOptions options = new LaunchOptions();
+        LaunchCommandBuilder builder = new LaunchCommandBuilder(instance);
+
+        List<String> command = builder.build(options);
+
+        // Extract -p (module path) and its value
+        int pIdx = command.indexOf("-p");
+        assertTrue(pIdx >= 0, "Forge must have -p");
+        String modulePath = command.get(pIdx + 1);
+
+        // Extract --add-modules, -Djava.library.path
+        String addModules = null;
+        String libPath = null;
+        for (String arg : command) {
+            if (arg.startsWith("-Djava.library.path=")) {
+                libPath = arg;
+            }
+        }
+        for (int i = 0; i < command.size(); i++) {
+            if ("--add-modules=ALL-MODULE-PATH".equals(command.get(i))) {
+                addModules = command.get(i);
+            }
+        }
+        assertNotNull(addModules, "Must have --add-modules=ALL-MODULE-PATH");
+
+        // Build minimal Java command that validates the module path
+        // java -Djava.library.path=<path> -p <classpath> --add-modules=ALL-MODULE-PATH -version
+        ProcessBuilder pb = new ProcessBuilder(
+            "java",
+            libPath,
+            "-p", modulePath,
+            "--add-modules=ALL-MODULE-PATH",
+            "-version"
+        );
+        pb.redirectErrorStream(true);
+
+        Process process = pb.start();
+        String output = new String(process.getInputStream().readAllBytes());
+        int exitCode = process.waitFor();
+
+        assertTrue(exitCode == 0,
+                "Java should accept module path without errors. Exit code: " + exitCode
+                + "\nOutput: " + output);
+    }
+}

launcher/pom.xml

@@ -1,156 +1,179 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-
-    <modelVersion>4.0.0</modelVersion>
-    <groupId>me.sashegdev</groupId>
-    <artifactId>ZernMCLauncher</artifactId>
-    <version>1.0.10</version>
-    <packaging>pom</packaging>
-
-    <name>ZernMC Launcher Parent</name>
-    <description>ZernMC Launcher - Multi-module project</description>
-
-<modules>
-        <module>bootstrap</module>
-        <module>launcher</module>
-    </modules>
-
-    <properties>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.organization.name>ZernMC</project.organization.name>
-        <project.inceptionYear>2026</project.inceptionYear>
-        <project.description>ZernMC Launcher - Multi-module project</project.description>
-    </properties>
-
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.apache.httpcomponents</groupId>
-                <artifactId>httpclient</artifactId>
-                <version>4.5.14</version>
-            </dependency>
-            <dependency>
-                <groupId>com.fasterxml.jackson.core</groupId>
-                <artifactId>jackson-databind</artifactId>
-                <version>2.15.2</version>
-            </dependency>
-            <dependency>
-                <groupId>com.google.code.gson</groupId>
-                <artifactId>gson</artifactId>
-                <version>2.10.1</version>
-            </dependency>
-            <dependency>
-                <groupId>org.json</groupId>
-                <artifactId>json</artifactId>
-                <version>20231013</version>
-            </dependency>
-            <dependency>
-                <groupId>org.fusesource.jansi</groupId>
-                <artifactId>jansi</artifactId>
-                <version>2.4.1</version>
-            </dependency>
-            <dependency>
-                <groupId>org.jline</groupId>
-                <artifactId>jline</artifactId>
-                <version>3.24.1</version>
-            </dependency>
-            <dependency>
-                <groupId>me.tongfei</groupId>
-                <artifactId>progressbar</artifactId>
-                <version>0.9.5</version>
-            </dependency>
-            <dependency>
-                <groupId>commons-io</groupId>
-                <artifactId>commons-io</artifactId>
-                <version>2.15.1</version>
-            </dependency>
-            <!-- JavaFX for Windows -->
-            <dependency>
-                <groupId>org.openjfx</groupId>
-                <artifactId>javafx-controls</artifactId>
-                <version>23</version>
-                <classifier>win</classifier>
-            </dependency>
-            <dependency>
-                <groupId>org.openjfx</groupId>
-                <artifactId>javafx-web</artifactId>
-                <version>23</version>
-                <classifier>win</classifier>
-            </dependency>
-            <dependency>
-                <groupId>org.openjfx</groupId>
-                <artifactId>javafx-graphics</artifactId>
-                <version>23</version>
-                <classifier>win</classifier>
-            </dependency>
-            <dependency>
-                <groupId>org.openjfx</groupId>
-                <artifactId>javafx-base</artifactId>
-                <version>23</version>
-                <classifier>win</classifier>
-            </dependency>
-            <dependency>
-                <groupId>org.openjfx</groupId>
-                <artifactId>javafx-media</artifactId>
-                <version>23</version>
-                <classifier>win</classifier>
-            </dependency>
-        </dependencies>
-</dependencyManagement>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.2.3</version>
-            </plugin>
-
-            <!-- Shade Plugin -->
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.5.0</version>
-                <executions>
-                    <execution>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <outputFile>../../server/builds/ZernMCLauncher.jar</outputFile>
-                            <transformers>
-                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-                                    <mainClass>${mainClass}</mainClass>
-                                    <manifestEntries>
-                                        <Implementation-Version>${project.version}</Implementation-Version>
-                                        <Implementation-Title>ZernMC Launcher</Implementation-Title>
-                                        <Implementation-Vendor>SashegDev</Implementation-Vendor>
-                                        <Implementation-Description>Samopisnui Minecraft-launcher. by SashegDev</Implementation-Description>
-                                        <Implementation-URL>https://github.com/SashegDev/launcher</Implementation-URL>
-                                    </manifestEntries>
-                                </transformer>
-                            </transformers>
-                        </configuration>
-                    </execution>
-</executions>
-            </plugin>
-        </plugins>
-    </build>
-    <profiles>
-        <profile>
-            <id>global</id>
-            <activation>
-                <activeByDefault>true</activeByDefault>
-            </activation>
-            <properties>
-                <launcher.title>ZernMC Launcher</launcher.title>
-                <server.url>http://87.120.187.36:1582</server.url>
-            </properties>
-        </profile>
-    </profiles>
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>me.sashegdev</groupId>
+    <artifactId>ZernMCLauncher</artifactId>
+    <version>${revision}</version>
+    <packaging>pom</packaging>
+
+    <name>ZernMC Launcher Parent</name>
+    <description>ZernMC Launcher - Multi-module project</description>
+
+<modules>
+        <module>bootstrap</module>
+        <module>launcher</module>
+    </modules>
+
+    <properties>
+        <revision>1.0.14</revision>
+        <hotfix>2</hotfix>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.organization.name>ZernMC</project.organization.name>
+        <project.inceptionYear>2026</project.inceptionYear>
+        <project.description>ZernMC Launcher - Multi-module project</project.description>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.httpcomponents</groupId>
+                <artifactId>httpclient</artifactId>
+                <version>4.5.14</version>
+            </dependency>
+            <dependency>
+                <groupId>com.fasterxml.jackson.core</groupId>
+                <artifactId>jackson-databind</artifactId>
+                <version>2.15.2</version>
+            </dependency>
+            <dependency>
+                <groupId>com.google.code.gson</groupId>
+                <artifactId>gson</artifactId>
+                <version>2.10.1</version>
+            </dependency>
+            <dependency>
+                <groupId>org.json</groupId>
+                <artifactId>json</artifactId>
+                <version>20231013</version>
+            </dependency>
+            <dependency>
+                <groupId>org.fusesource.jansi</groupId>
+                <artifactId>jansi</artifactId>
+                <version>2.4.1</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jline</groupId>
+                <artifactId>jline</artifactId>
+                <version>3.24.1</version>
+            </dependency>
+            <dependency>
+                <groupId>me.tongfei</groupId>
+                <artifactId>progressbar</artifactId>
+                <version>0.9.5</version>
+            </dependency>
+            <dependency>
+                <groupId>commons-io</groupId>
+                <artifactId>commons-io</artifactId>
+                <version>2.15.1</version>
+            </dependency>
+            <!-- JavaFX for Windows -->
+            <dependency>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-controls</artifactId>
+                <version>23</version>
+                <classifier>win</classifier>
+            </dependency>
+            <dependency>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-web</artifactId>
+                <version>23</version>
+                <classifier>win</classifier>
+            </dependency>
+            <dependency>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-graphics</artifactId>
+                <version>23</version>
+                <classifier>win</classifier>
+            </dependency>
+            <dependency>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-base</artifactId>
+                <version>23</version>
+                <classifier>win</classifier>
+            </dependency>
+            <dependency>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-media</artifactId>
+                <version>23</version>
+                <classifier>win</classifier>
+            </dependency>
+        </dependencies>
+</dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <version>1.6.0</version>
+                <configuration>
+                    <updatePomFile>true</updatePomFile>
+                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <phase>process-resources</phase>
+                        <goals><goal>flatten</goal></goals>
+                    </execution>
+                    <execution>
+                        <id>flatten-clean</id>
+                        <phase>clean</phase>
+                        <goals><goal>clean</goal></goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.2.3</version>
+            </plugin>
+
+            <!-- Shade Plugin -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.5.0</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <outputFile>../../server/builds/ZernMCLauncher.jar</outputFile>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>${mainClass}</mainClass>
+                                    <manifestEntries>
+                                        <Implementation-Version>${project.version}.${hotfix}</Implementation-Version>
+                                        <Implementation-Title>ZernMC Launcher</Implementation-Title>
+                                        <Implementation-Vendor>SashegDev</Implementation-Vendor>
+                                        <Implementation-Description>Samopisnui Minecraft-launcher. by SashegDev</Implementation-Description>
+                                        <Implementation-URL>https://github.com/SashegDev/launcher</Implementation-URL>
+                                    </manifestEntries>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+</executions>
+            </plugin>
+        </plugins>
+    </build>
+    <profiles>
+        <profile>
+            <id>global</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+            <properties>
+                <launcher.title>ZernMC Launcher</launcher.title>
+                <server.url>http://87.120.187.36:1582</server.url>
+            </properties>
+        </profile>
+    </profiles>
 </project>

server/auth.py

@@ -295,7 +295,7 @@ class LoginRequest(BaseModel):
     def validate_username(cls, v):
         if not re.match(r'^[a-zA-Z0-9_]+$', v):
             raise ValueError('Имя пользователя может содержать только буквы, цифры и подчеркивания')
-        return v.lower()
+        return v
 
 class RegisterRequest(BaseModel):
     username: str = Field(..., min_length=3, max_length=32)
@@ -305,7 +305,7 @@ class RegisterRequest(BaseModel):
     def validate_username(cls, v):
         if not re.match(r'^[a-zA-Z0-9_]+$', v):
             raise ValueError('Имя пользователя может содержать только буквы, цифры и подчеркивания')
-        return v.lower()
+        return v
 
 class TokenResponse(BaseModel):
     access_token: str

server/main.py

@@ -33,6 +33,7 @@ from playtime import router as playtime_router, init_playtime_db
 
 import asyncio
 import hashlib
+import uuid
 import aiofiles
 import mimetypes
 
@@ -67,6 +68,9 @@ MANUAL_BLOCKED_IPS = set(os.environ.get("BLOCKED_IPS", "").split(",")) - {""}  #
 # Cache file for blocklist (load once)
 BLOCKLIST_CACHE_FILE = Path("data/blocklist_cache.txt")
 
+# Crash reports directory
+CRASH_REPORTS_DIR = Path("data/crash_reports")
+
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
@@ -143,6 +147,7 @@ async def lifespan(app: FastAPI):
     BUILDS_DIR.mkdir(exist_ok=True)
     PACKS_DIR.mkdir(exist_ok=True)
     DATA_DIR.mkdir(exist_ok=True)
+    CRASH_REPORTS_DIR.mkdir(exist_ok=True)
 
     init_db()
     init_friends_db()
@@ -222,6 +227,24 @@ async def lifespan(app: FastAPI):
 
         asyncio.create_task(periodic_sync())
 
+    # Background task: auto-detect new ZIP archives in builds/ and register them
+    async def watch_new_zips():
+        watch_interval = int(os.environ.get("ZIP_WATCH_INTERVAL", "15"))
+        while True:
+            await asyncio.sleep(watch_interval)
+            try:
+                before = set(f.name for f in VERSIONS_DIR.iterdir()) if VERSIONS_DIR.exists() else set()
+                extract_new_format_versions()
+                after = set(f.name for f in VERSIONS_DIR.iterdir()) if VERSIONS_DIR.exists() else set()
+                new_versions = after - before
+                if new_versions:
+                    logger.info(f"New launcher versions detected: {', '.join(sorted(new_versions))}")
+                    generate_launcher_builds_meta()
+            except Exception as e:
+                logger.warning(f"ZIP watch error: {e}")
+
+    asyncio.create_task(watch_new_zips())
+
     yield
 
     # Cleanup proxy client
@@ -1238,15 +1261,17 @@ async def get_pack_file(pack_name: str, file_path: str, request: Request, curren
 # ====================== ЭНДПОИНТЫ ДЛЯ ЛАУНЧЕРА ======================
 
 def get_current_launcher_version() -> str:
-    """Get current launcher version from meta system (new format) or build.version (legacy)"""
+    """Get current launcher version — prefers build.version (includes hotfix), falls back to extracted versions"""
+    version_file = BUILDS_DIR / "build.version"
+    if version_file.exists():
+        v = version_file.read_text().strip()
+        if v:
+            return v
+    
     versions = get_launcher_versions()
     if versions:
         return versions[0]["meta"]["version"]
     
-    # Fallback to build.version for legacy
-    version_file = BUILDS_DIR / "build.version"
-    if version_file.exists():
-        return version_file.read_text().strip()
     return "1.0.0"
 
 
@@ -1562,12 +1587,12 @@ async def get_launcher_version():
         "updated_at": datetime.utcnow().isoformat()
     }
     
-    jar_path = BUILDS_DIR / "ZernMCLauncher.jar"
+    jar_path = BUILDS_DIR / "zernmclauncher.jar"
     if jar_path.exists():
         response["download_jar"] = "/launcher/download/jar"
         response["jar_size"] = jar_path.stat().st_size
     
-    exe_path = BUILDS_DIR / "ZernMCLauncher.exe"
+    exe_path = BUILDS_DIR / "zernmc.exe"
     if exe_path.exists():
         response["download_exe"] = "/launcher/download/exe"
         response["exe_size"] = exe_path.stat().st_size
@@ -1606,7 +1631,7 @@ async def download_launcher_jar(request: Request = None):
 @app.get("/launcher/download/exe")
 async def download_launcher_exe(request: Request = None):
     """Download launcher EXE file (Windows)"""
-    file_path = BUILDS_DIR / "ZernMCLauncher.exe"
+    file_path = BUILDS_DIR / "zernmc.exe"
 
     if not file_path.exists():
         raise HTTPException(404, "EXE file not found")
@@ -1894,6 +1919,33 @@ async def get_launcher_full_info():
     return info
 
 
+@app.post("/launcher/crash-report")
+async def receive_crash_report(request: Request):
+    """Receive and store launcher crash reports"""
+    try:
+        body = await request.json()
+    except Exception:
+        raise HTTPException(status_code=400, detail="Invalid JSON")
+
+    ip = request.client.host if request.client else "unknown"
+    body["source_ip"] = ip
+    body["received_at"] = datetime.utcnow().isoformat()
+
+    report_id = datetime.utcnow().strftime("%Y%m%d_%H%M%S") + "_" + uuid.uuid4().hex[:8]
+    report_path = CRASH_REPORTS_DIR / f"{report_id}.json"
+
+    try:
+        CRASH_REPORTS_DIR.mkdir(parents=True, exist_ok=True)
+        async with aiofiles.open(report_path, "w", encoding="utf-8") as f:
+            await f.write(json.dumps(body, indent=2, ensure_ascii=False))
+        logger.info(f"Crash report saved: {report_path.name} from {ip}")
+    except Exception as e:
+        logger.error(f"Failed to save crash report: {e}")
+        raise HTTPException(status_code=500, detail="Failed to save report")
+
+    return {"status": "ok", "id": report_id}
+
+
 # ====================== НОВОСТИ ======================
 
 NEWS_DIR = Path(__file__).parent / "news"
@@ -2278,11 +2330,15 @@ async def proxy_download(request: Request):
         "maven.fabricmc.net",
         "meta.fabricmc.net",
         "piston-meta.mojang.com",
+        "piston-data.mojang.com",
         "launchermeta.mojang.com",
         "resources.download.minecraft.net",
+        "libraries.minecraft.net",
         "maven.minecraftforge.net",
         "files.minecraftforge.net",
         "maven.neoforged.net",
+        "repo1.maven.org",
+        "repo.maven.apache.org",
         "api.zernmc.ru",
         "api.zernmc.online"
     ]
@@ -2302,7 +2358,7 @@ async def proxy_download(request: Request):
     
     try:
         # Используем streaming response для больших файлов
-        response = await proxy_client.get(url)
+        response = await proxy_client.get(url, timeout=300.0)
         response.raise_for_status()
         
         # Определяем content-type из ответа или по расширению

server/news/news6.txt

@@ -0,0 +1,10 @@
+Pack Download Stability Fix
+Update
+v1.0.13.1
+[{"bold":1,"text":"Fixed pack downloads getting stuck on Minecraft/Forge installation","click_action":"none"}]
+- All Minecraft downloads now use smart proxy system (like the rest of the launcher)
+- Added read timeouts to prevent hanging on slow/unstable connections
+- Asset download no longer blocks forever if Mojang CDN stalls
+- Forge installer process now has a 10-minute timeout
+- Progress bar now updates during Minecraft installation phase
+[{"clickable":1,"text":"Download v1.0.13.1","click_action":"open_url","url":"https://zernmc.ru/download"}]

todo.txt

@@ -0,0 +1,9 @@
+TODO / ideas backlog
+====================
+
+Java Agent + IPC (low priority, overkill now)
+- Заменить прямой ProcessBuilder.start() на прокси-класс (-javaagent или -cp прокси)
+- Прокси класс: подключается к localhost RPC, ждёт "launch", потом reflection вызывает реальный main
+- Даёт: двустороннюю связь лаунчер-игра, контроль жизненного цикла, crash-репорты из процесса игры,
+  передачу настроек/токенов на лету, патчинг классов через Instrumentation API
+- Для ZernMC сейчас оверхед — но запомнить на будущее