Fix: Fabric loader launch and Bootstrap paths

- Add Fabric support in LaunchCommandBuilder.findVersionJson()
- Fix Bootstrap to properly use bin/ directory for launcher JAR
- Fix server.py to accept both ZernMC-win-*.zip and ZernMCLauncher-*.zip
- Add debug output for version.json resolution

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

@@ -18,10 +18,17 @@ public class Bootstrap {
     private static final int BUFFER_SIZE = 8192;
 
     private static Path baseDir;
+    private static Path binDir;
     private static Path logDir;
 
+    private static Path getLauncherJar() {
+        return binDir.resolve(JAR_NAME);
+    }
+    
     public static void main(String[] args) throws Exception {
         baseDir = Paths.get("").toAbsolutePath();
+        binDir = baseDir.resolve("bin");
+        Files.createDirectories(binDir);
         logDir = baseDir.resolve("logs");
         Files.createDirectories(logDir);
         
@@ -65,7 +72,7 @@ public class Bootstrap {
     
     private static String readCurrentVersion() {
         // Читаем версию из манифеста zernmclauncher.jar в папке bin/
-        Path launcherJar = baseDir.resolve("bin").resolve("zernmclauncher.jar");
+        Path launcherJar = getLauncherJar();
         try {
             if (Files.exists(launcherJar)) {
                 try (FileInputStream fis = new FileInputStream(launcherJar.toFile())) {
@@ -471,7 +478,7 @@ public class Bootstrap {
         conn.setRequestMethod("GET");
 
         if (conn.getResponseCode() == 200) {
-            Path jarFile = baseDir.resolve(JAR_NAME);
+            Path jarFile = getLauncherJar();
             Path tmp = jarFile.resolveSibling("zernmc-launcher-new.jar");
 
             try (InputStream in = conn.getInputStream();
@@ -501,7 +508,7 @@ public class Bootstrap {
     
     private static void launchJFX() throws Exception {
         Path javaBin = findJava();
-        Path jarPath = baseDir.resolve(JAR_NAME);
+        Path jarPath = getLauncherJar();
 
         log("Запуск JFX режима...");
         log("Java: " + javaBin);
@@ -544,7 +551,7 @@ public class Bootstrap {
     
     private static void launchCLI() throws Exception {
         Path javaBin = findJava();
-        Path jarPath = baseDir.resolve(JAR_NAME);
+        Path jarPath = getLauncherJar();
 
         log("Запуск CLI режима...");
         log("Java: " + javaBin);

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

@@ -63,6 +63,10 @@ public class LaunchCommandBuilder {
                 JSONObject json = new JSONObject(content);
                 System.out.println(ZAnsi.green("Найден version.json: " + versionJson.getFileName()));
                 return new VersionManifest(json);
+            } else {
+                System.out.println(ZAnsi.yellow("version.json не найден для " + instance.getName()));
+                System.out.println(ZAnsi.yellow("  loaderType=" + instance.getLoaderType() + " mcVersion=" + instance.getMinecraftVersion() + " loaderVersion=" + instance.getLoaderVersion()));
+                System.out.println(ZAnsi.yellow("  path=" + instance.getPath()));
             }
         } catch (Exception e) {
             System.out.println(ZAnsi.yellow("Не удалось загрузить version.json: " + e.getMessage()));
@@ -76,6 +80,38 @@ public class LaunchCommandBuilder {
         String mcVersion = instance.getMinecraftVersion();
         String loaderVersion = instance.getLoaderVersion();
 
+        if ("fabric".equals(loaderType)) {
+            String versionId = getVersionId();
+            // Try fabric version ID first
+            Path jsonPath = versionsDir.resolve(versionId).resolve(versionId + ".json");
+            if (Files.exists(jsonPath)) {
+                return jsonPath;
+            }
+            // Try instance's fabricVersionId if available
+            String fabricId = instance.getFabricVersionId();
+            if (fabricId != null && !fabricId.isEmpty()) {
+                Path fabricPath = versionsDir.resolve(fabricId).resolve(fabricId + ".json");
+                if (Files.exists(fabricPath)) {
+                    return fabricPath;
+                }
+            }
+            // Try generic fabric pattern
+            try {
+                if (Files.exists(versionsDir)) {
+                    try (var stream = Files.list(versionsDir)) {
+                        return stream
+                                .filter(Files::isDirectory)
+                                .filter(dir -> dir.getFileName().toString().contains("fabric"))
+                                .filter(dir -> dir.getFileName().toString().contains(mcVersion))
+                                .findFirst()
+                                .map(dir -> dir.resolve(dir.getFileName().toString() + ".json"))
+                                .filter(Files::exists)
+                                .orElse(null);
+                    }
+                }
+            } catch (Exception ignored) {}
+        }
+
         if ("forge".equals(loaderType) || "neoforge".equals(loaderType)) {
             String[] candidates = {
                 getVersionId(),
@@ -152,6 +188,10 @@ public class LaunchCommandBuilder {
         String loaderType = instance.getLoaderType().toLowerCase();
         if ("fabric".equals(loaderType)) {
             return "net.fabricmc.loader.impl.launch.knot.KnotClient";
+        } else if ("forge".equals(loaderType)) {
+            return "net.minecraftforge.client.main.ForgeClient";
+        } else if ("neoforge".equals(loaderType)) {
+            return "cpw.mods.bootstraplauncher.BootstrapLauncher";
         }
         return "net.minecraft.client.main.Main";
     }

server/main.py

@@ -1080,7 +1080,8 @@ async def download_launcher_exe():
 @app.get("/launcher/download/zip/{filename}")
 async def download_launcher_zip(filename: str):
     """Download specific launcher ZIP archive"""
-    if ".." in filename or not filename.startswith("ZernMCLauncher-") or not filename.endswith(".zip"):
+    valid_patterns = ["ZernMCLauncher-", "ZernMC-win-"]
+    if ".." in filename or not any(filename.startswith(p) for p in valid_patterns) or not filename.endswith(".zip"):
         raise HTTPException(400, "Invalid filename")
     
     file_path = BUILDS_DIR / filename