Fix: Support-Bundle-Export friert die UI nicht mehr 1-2 Minuten ein (asynchrones IO)

buildSupportBundle lief komplett synchron auf dem Electron-Main-Thread:
existsSync/readdirSync/statSync/readFileSync (via AdmZip.addLocalFile) ueber
ALLE Log-Dateien — bei Hunderten item-logs und gleichzeitig laufenden
Downloads (Platte ausgelastet) blockierte das den Event-Loop fuer 1-2 min,
die ganze Oberflaeche stand. Live belegt: ein Bundle mit Hunderten
item-logs-Dateien.

Fix: Alle Datei-Zugriffe im Bundle-Build auf fs.promises (nicht-blockierend)
umgestellt, buildSupportBundle ist jetzt async und liefert Promise<Buffer>.
Dateiinhalte werden per readFile gelesen und mit zip.addFile(buffer)
hinzugefuegt (gleiche Zip-Struktur wie vorher). Der Event-Loop bleibt
waehrend der IO-Wartezeiten frei → UI friert nicht mehr ein. Caller
angepasst (app-controller.exportSupportBundle async, main.ts await,
debug-server via .then).

Test support-bundle.test.ts: valides Zip mit Overview + echter Datei;
ein paralleler Timer feuert waehrend des Builds (Event-Loop nicht blockiert).
840/840 gruen, tsc unveraendert (6), Build ok.

src/main/app-controller.ts

@@ -661,14 +661,14 @@ public async checkDebridAccounts(): Promise<DebridAccountStatus[]> {
     return encryptBackup(JSON.stringify(payloadObj));
   }
 
-  public exportSupportBundle(): { buffer: Buffer; defaultFileName: string } {
+  public async exportSupportBundle(): Promise<{ buffer: Buffer; defaultFileName: string }> {
     this.audit("INFO", "Support-Bundle exportiert");
     logTraceEvent("INFO", "support", "Support-Bundle erstellt", {
       packageCount: Object.keys(this.manager.getSnapshot().session.packages).length,
       itemCount: Object.keys(this.manager.getSnapshot().session.items).length
     });
     return {
-      buffer: buildSupportBundle(this.manager, this.storagePaths.baseDir, { hostDiagnosticsMode: "cached" }),
+      buffer: await buildSupportBundle(this.manager, this.storagePaths.baseDir, { hostDiagnosticsMode: "cached" }),
       defaultFileName: getSupportBundleDefaultFileName()
     };
   }

src/main/debug-server.ts

@@ -837,12 +837,17 @@ function handleRequest(req: http.IncomingMessage, res: http.ServerResponse): voi
       return;
     }
     const fileName = getSupportBundleDefaultFileName();
-    const body = buildSupportBundle(manager, runtimeBaseDir);
+    buildSupportBundle(manager, runtimeBaseDir)
-    logTraceEvent("INFO", "support", "Support-Bundle über Debug-Server heruntergeladen", {
+      .then((body) => {
-      fileName,
+        logTraceEvent("INFO", "support", "Support-Bundle über Debug-Server heruntergeladen", {
-      sizeBytes: body.length
+          fileName,
-    });
+          sizeBytes: body.length
-    binaryResponse(res, 200, body, "application/zip", fileName);
+        });
+        binaryResponse(res, 200, body, "application/zip", fileName);
+      })
+      .catch((error) => {
+        jsonResponse(res, 500, { error: String((error as { message?: string })?.message || error) });
+      });
     return;
   }
 

src/main/main.ts

@@ -592,7 +592,7 @@ function registerIpcHandlers(): void {
     if (result.canceled || !result.filePath) {
       return { saved: false };
     }
-    const exported = controller.exportSupportBundle();
+    const exported = await controller.exportSupportBundle();
     await fs.promises.writeFile(result.filePath, exported.buffer);
     return { saved: true, filePath: result.filePath };
   });

src/main/support-bundle.ts

@@ -1,4 +1,4 @@
-import fs from "node:fs";
+import { promises as fsp } from "node:fs";
 import path from "node:path";
 import AdmZip from "adm-zip";
 import { APP_VERSION } from "./constants";
@@ -20,9 +20,9 @@ import type { DownloadManager } from "./download-manager";
 
 const AI_MANIFEST_FILE = "debug_ai_manifest.json";
 
-function safeReadJson(filePath: string): unknown {
+async function safeReadJson(filePath: string): Promise<unknown> {
   try {
-    return JSON.parse(fs.readFileSync(filePath, "utf8")) as unknown;
+    return JSON.parse(await fsp.readFile(filePath, "utf8")) as unknown;
   } catch {
     return null;
   }
@@ -32,42 +32,50 @@ function addJson(zip: AdmZip, zipPath: string, value: unknown): void {
   zip.addFile(zipPath, Buffer.from(`${JSON.stringify(value, null, 2)}\n`, "utf8"));
 }
 
-function addFileIfExists(zip: AdmZip, sourcePath: string | null, zipPath: string): void {
+async function addFileIfExists(zip: AdmZip, sourcePath: string | null, zipPath: string): Promise<void> {
-  if (!sourcePath || !fs.existsSync(sourcePath)) {
+  if (!sourcePath) {
     return;
   }
-  zip.addLocalFile(sourcePath, path.posix.dirname(zipPath), path.posix.basename(zipPath));
+  try {
+    const buffer = await fsp.readFile(sourcePath);
+    zip.addFile(zipPath, buffer);
+  } catch {
+  }
 }
 
-function addDirectoryIfExists(zip: AdmZip, dirPath: string, zipRoot: string): void {
+async function addDirectoryIfExists(zip: AdmZip, dirPath: string, zipRoot: string): Promise<void> {
-  if (!fs.existsSync(dirPath)) {
+  let entries;
+  try {
+    entries = await fsp.readdir(dirPath, { withFileTypes: true });
+  } catch {
     return;
   }
-  const entries = fs.readdirSync(dirPath, { withFileTypes: true });
   for (const entry of entries) {
     const fullPath = path.join(dirPath, entry.name);
     const zipPath = path.posix.join(zipRoot, entry.name);
     if (entry.isDirectory()) {
-      addDirectoryIfExists(zip, fullPath, zipPath);
+      await addDirectoryIfExists(zip, fullPath, zipPath);
       continue;
     }
-    zip.addLocalFile(fullPath, path.posix.dirname(zipPath), path.posix.basename(zipPath));
+    await addFileIfExists(zip, fullPath, zipPath);
   }
 }
 
-function addRecentDirectoryFiles(zip: AdmZip, dirPath: string, zipRoot: string, maxAgeMs: number): number {
+async function addRecentDirectoryFiles(zip: AdmZip, dirPath: string, zipRoot: string, maxAgeMs: number): Promise<number> {
-  if (!fs.existsSync(dirPath)) {
+  let entries;
+  try {
+    entries = await fsp.readdir(dirPath, { withFileTypes: true });
+  } catch {
     return 0;
   }
   const cutoff = Date.now() - maxAgeMs;
   let added = 0;
-  const entries = fs.readdirSync(dirPath, { withFileTypes: true });
   for (const entry of entries) {
     if (!entry.isFile()) continue;
     const fullPath = path.join(dirPath, entry.name);
     try {
-      if (fs.statSync(fullPath).mtimeMs >= cutoff) {
+      if ((await fsp.stat(fullPath)).mtimeMs >= cutoff) {
-        zip.addLocalFile(fullPath, zipRoot, entry.name);
+        await addFileIfExists(zip, fullPath, path.posix.join(zipRoot, entry.name));
         added += 1;
       }
     } catch {  }
@@ -127,7 +135,7 @@ function resolveHostDiagnostics(mode: HostDiagnosticsMode): unknown {
   return getWindowsHostDiagnostics();
 }
 
-export function buildSupportBundle(manager: DownloadManager, baseDir: string, options: BuildSupportBundleOptions = {}): Buffer {
+export async function buildSupportBundle(manager: DownloadManager, baseDir: string, options: BuildSupportBundleOptions = {}): Promise<Buffer> {
   const zip = new AdmZip();
   const hostDiagnosticsMode = options.hostDiagnosticsMode || "full";
   const storagePaths = createStoragePaths(baseDir);
@@ -175,39 +183,39 @@ export function buildSupportBundle(manager: DownloadManager, baseDir: string, op
   const recentErrors = getRecentErrors();
   addJson(zip, "overview/recent-errors.json", { count: recentErrors.length, entries: recentErrors });
 
-  addFileIfExists(zip, path.join(baseDir, AI_MANIFEST_FILE), `runtime/${AI_MANIFEST_FILE}`);
+  await addFileIfExists(zip, path.join(baseDir, AI_MANIFEST_FILE), `runtime/${AI_MANIFEST_FILE}`);
-  addFileIfExists(zip, path.join(baseDir, "debug_host.txt"), "runtime/debug_host.txt");
+  await addFileIfExists(zip, path.join(baseDir, "debug_host.txt"), "runtime/debug_host.txt");
-  addFileIfExists(zip, path.join(baseDir, "debug_port.txt"), "runtime/debug_port.txt");
+  await addFileIfExists(zip, path.join(baseDir, "debug_port.txt"), "runtime/debug_port.txt");
-  addFileIfExists(zip, getTraceConfigPath(), "runtime/trace_config.json");
+  await addFileIfExists(zip, getTraceConfigPath(), "runtime/trace_config.json");
 
-  addFileIfExists(zip, getLogFilePath(), "logs/rd_downloader.log");
+  await addFileIfExists(zip, getLogFilePath(), "logs/rd_downloader.log");
-  addFileIfExists(zip, `${getLogFilePath()}.old`, "logs/rd_downloader.log.old");
+  await addFileIfExists(zip, `${getLogFilePath()}.old`, "logs/rd_downloader.log.old");
-  addFileIfExists(zip, getAuditLogPath(), "logs/audit.log");
+  await addFileIfExists(zip, getAuditLogPath(), "logs/audit.log");
-  addFileIfExists(zip, getAuditLogPath() ? `${getAuditLogPath()}.old` : null, "logs/audit.log.old");
+  await addFileIfExists(zip, getAuditLogPath() ? `${getAuditLogPath()}.old` : null, "logs/audit.log.old");
-  addFileIfExists(zip, getRenameLogPath(), "logs/rename.log");
+  await addFileIfExists(zip, getRenameLogPath(), "logs/rename.log");
-  addFileIfExists(zip, getRenameLogPath() ? `${getRenameLogPath()}.old` : null, "logs/rename.log.old");
+  await addFileIfExists(zip, getRenameLogPath() ? `${getRenameLogPath()}.old` : null, "logs/rename.log.old");
-  addFileIfExists(zip, getDesktopRenameLogPath(), "logs/rename-session-desktop.txt");
+  await addFileIfExists(zip, getDesktopRenameLogPath(), "logs/rename-session-desktop.txt");
-  addFileIfExists(zip, getSessionLogPath(), "logs/session.log");
+  await addFileIfExists(zip, getSessionLogPath(), "logs/session.log");
-  addFileIfExists(zip, getTraceLogPath(), "logs/trace.log");
+  await addFileIfExists(zip, getTraceLogPath(), "logs/trace.log");
-  addFileIfExists(zip, getTraceLogPath() ? `${getTraceLogPath()}.old` : null, "logs/trace.log.old");
+  await addFileIfExists(zip, getTraceLogPath() ? `${getTraceLogPath()}.old` : null, "logs/trace.log.old");
-  addFileIfExists(zip, getAccountRotationLogPath(), "logs/account-rotation.log");
+  await addFileIfExists(zip, getAccountRotationLogPath(), "logs/account-rotation.log");
-  addFileIfExists(zip, getAccountRotationLogPath() ? `${getAccountRotationLogPath()}.old` : null, "logs/account-rotation.log.old");
+  await addFileIfExists(zip, getAccountRotationLogPath() ? `${getAccountRotationLogPath()}.old` : null, "logs/account-rotation.log.old");
-  addFileIfExists(zip, getConversionLogPath(), "logs/conversion.log");
+  await addFileIfExists(zip, getConversionLogPath(), "logs/conversion.log");
-  addFileIfExists(zip, getConversionLogPath() ? `${getConversionLogPath()}.old` : null, "logs/conversion.log.old");
+  await addFileIfExists(zip, getConversionLogPath() ? `${getConversionLogPath()}.old` : null, "logs/conversion.log.old");
 
   const SUPPORT_BUNDLE_LOG_WINDOW_MS = 8 * 60 * 60 * 1000;
-  addDirectoryIfExists(zip, path.join(baseDir, "session-logs"), "logs/session-logs");
+  await addDirectoryIfExists(zip, path.join(baseDir, "session-logs"), "logs/session-logs");
-  addRecentDirectoryFiles(zip, path.join(baseDir, "package-logs"), "logs/package-logs", SUPPORT_BUNDLE_LOG_WINDOW_MS);
+  await addRecentDirectoryFiles(zip, path.join(baseDir, "package-logs"), "logs/package-logs", SUPPORT_BUNDLE_LOG_WINDOW_MS);
-  addRecentDirectoryFiles(zip, path.join(baseDir, "item-logs"), "logs/item-logs", SUPPORT_BUNDLE_LOG_WINDOW_MS);
+  await addRecentDirectoryFiles(zip, path.join(baseDir, "item-logs"), "logs/item-logs", SUPPORT_BUNDLE_LOG_WINDOW_MS);
 
   for (const packageId of packageIds) {
-    addFileIfExists(zip, manager.getPackageLogPath(packageId) || getPackageLogPath(packageId), `logs/live/package-${packageId}.txt`);
+    await addFileIfExists(zip, manager.getPackageLogPath(packageId) || getPackageLogPath(packageId), `logs/live/package-${packageId}.txt`);
   }
   for (const itemId of itemIds) {
-    addFileIfExists(zip, manager.getItemLogPath(itemId), `logs/live/item-${itemId}.txt`);
+    await addFileIfExists(zip, manager.getItemLogPath(itemId), `logs/live/item-${itemId}.txt`);
   }
 
-  const aiManifest = safeReadJson(path.join(baseDir, AI_MANIFEST_FILE));
+  const aiManifest = await safeReadJson(path.join(baseDir, AI_MANIFEST_FILE));
   if (aiManifest) {
     addJson(zip, "overview/ai-manifest.json", aiManifest);
   }

tests/support-bundle.test.ts

@@ -0,0 +1,67 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import AdmZip from "adm-zip";
+import { afterEach, describe, expect, it } from "vitest";
+import { buildSupportBundle } from "../src/main/support-bundle";
+import type { DownloadManager } from "../src/main/download-manager";
+
+const tempDirs: string[] = [];
+
+afterEach(() => {
+  for (const dir of tempDirs.splice(0)) {
+    try { fs.rmSync(dir, { recursive: true, force: true }); } catch {  }
+  }
+});
+
+function fakeManager(): DownloadManager {
+  const snapshot = {
+    stats: {},
+    session: { packages: {}, items: {}, packageOrder: [] },
+    speedText: "",
+    etaText: "",
+    canStart: false,
+    canStop: false,
+    canPause: false
+  };
+  return {
+    getSnapshot: () => snapshot,
+    getPackageLogPath: () => null,
+    getItemLogPath: () => null
+  } as unknown as DownloadManager;
+}
+
+describe("buildSupportBundle (async, non-blocking)", () => {
+  it("returns a Promise and produces a valid zip with overview + a real on-disk file", async () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), "rd-bundle-"));
+    tempDirs.push(root);
+    fs.writeFileSync(path.join(root, "debug_host.txt"), "host-info-test", "utf8");
+
+    const promise = buildSupportBundle(fakeManager(), root, { hostDiagnosticsMode: "none" });
+    expect(promise).toBeInstanceOf(Promise);
+
+    const buffer = await promise;
+    expect(Buffer.isBuffer(buffer)).toBe(true);
+    expect(buffer.length).toBeGreaterThan(0);
+
+    const entries = new AdmZip(buffer).getEntries().map((e) => e.entryName);
+    expect(entries).toContain("overview/meta.json");
+    expect(entries).toContain("overview/settings.json");
+    expect(entries).toContain("runtime/debug_host.txt");
+
+    const hostEntry = new AdmZip(buffer).getEntry("runtime/debug_host.txt");
+    expect(hostEntry?.getData().toString("utf8")).toBe("host-info-test");
+  });
+
+  it("does not block the event loop while building (a concurrent timer still fires)", async () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), "rd-bundle-"));
+    tempDirs.push(root);
+
+    let timerFired = false;
+    const timer = setTimeout(() => { timerFired = true; }, 0);
+    await buildSupportBundle(fakeManager(), root, { hostDiagnosticsMode: "none" });
+    clearTimeout(timer);
+    await new Promise((resolve) => setTimeout(resolve, 0));
+    expect(timerFired).toBe(true);
+  });
+});