Release SyncVito 1.0.13

CHANGELOG.md

@@ -1,5 +1,42 @@
 # Änderungsprotokoll
 
+## 1.0.13 – 2026-09-28
+
+### Behoben
+
+- **Zuverlässiger Windows-Autostart via Aufgabenplanung:** Da SyncVito mit Administratorrechten (`requireAdministrator`) läuft, blockierte der Windows Explorer beim Systemstart den Aufruf aus dem Registry-`Run`-Schlüssel. Der Autostart wird nun über eine geplante Windows-Aufgabe (`RunLevel=HighestAvailable`) bei Benutzeranmeldung ausgeführt, sodass SyncVito nach dem Hochfahren zuverlässig und ohne UAC-Dialog im Infobereich startet.
+- **Warteschleife für den Windows-Infobereich:** Falls der Windows Explorer beim Booten den Benachrichtigungsbereich noch nicht initialisiert hat, wartet SyncVito bis zu 15 Sekunden auf den Tray, statt sich sofort mit einem Fehler zu beenden.
+- **Automatische Autostart-Migration:** Bestehende Konfigurationen mit aktiviertem Autostart werden beim Programmstart automatisch auf die geplante Aufgabe umgestellt; alte Einträge im Run-Schlüssel werden bereinigt.
+- **Saubere Deinstallation:** Bei einer Deinstallation über Inno Setup wird die registrierte Windows-Aufgabe für den Autostart automatisch entfernt.
+
+## 1.0.12 – 2026-09-27
+
+### Behoben
+
+- **Endlosschleife bei Wiederholungen beseitigt:** Aufgaben in Wiederholungsschleifen werden nach dem Einreihen sauber aus der Retry-Warteliste entfernt und bei reinen Fehlern ohne gesperrte Dateien nicht mehr dauerhaft im 10-Sekunden-Takt neu gestartet.
+- **Wiederholungs-Backoff und Versuchslimit:** Für gesperrte Dateien greift ein exponentielles Backoff (30s, 60s, 120s bis max. 300s) sowie ein Limit von 5 automatischen Versuchen, um Festplatte, Netzwerk und Prozessor vor unnötigen Dauerläufen zu schützen.
+- **Flüchtige Cache-Dateien ohne Fehlermeldung:** Dateien, die zwischen Inventarerstellung und Kopiervorgang gelöscht wurden (z. B. dynamische Browser- oder Anwendungs-Caches), werden sauber als übersprungen gewertet und brechen die Sicherung nicht mehr mit `[WinError 2]` ab.
+- **Kein Einfrieren der Benutzeroberfläche:** Das automatische Weiterscrollen der Protokolltabelle bei vielen gleichzeitigen Meldungen wird gebündelt entprellt, die Abfrage des Windows Restart Managers für gesperrte Ordner wird pro Verzeichnis zwischengespeichert und Fortschrittsmeldungen werden im GUI-Thread gedrosselt.
+
+## 1.0.11 – 2026-09-27
+
+### Behoben
+
+- Der Button „Pausieren“ ist im Leerlauf deaktiviert, damit SyncVito nicht versehentlich ohne aktive Aufgabe in den Pausenzustand versetzt werden kann.
+- Beim Klick auf „Alle jetzt synchronisieren“ oder „Auswahl synchronisieren“ wird ein eventuell aktiver Pausenzustand automatisch aufgehoben und der Lauf sofort gestartet.
+- Klickt man auf „Fortsetzen“, wenn zuvor noch keine Aufgabe eingereiht war, startet SyncVito direkt alle aktiven Aufgaben, statt wirkungslos zu bleiben.
+- Die automatische Hintergrund-Updateprüfung setzt die Fortschrittsleiste im Leerlauf nicht mehr dauerhaft auf 100 % mit „SyncVito ist aktuell“, sondern die Leiste bleibt ordnungsgemäß auf „Bereit“.
+- Die Tray-Benachrichtigung beim Schließen des Fensters lautet nun unmissverständlich „SyncVito minimiert“ statt „SyncVito läuft weiter“.
+
+## 1.0.10 – 2026-09-27
+
+### Neu
+
+- **Etappen- und Bereichsanzeige:** Beim Synchronisieren wird der aktuelle Hauptordner (z. B. AppData, Dokumente oder definierte Unterauswahlen) zusammen mit der aktuellen Etappe (z. B. `[2/4 AppData]`) im Fortschrittsdock angezeigt, sodass stets ersichtlich ist, in welchem Bereich SyncVito gerade arbeitet und wie viele Ordner noch ausstehen.
+- **Live-Status in der Aufgabenliste:** Die Aufgaben-Tabelle zeigt laufende Vorgänge live mit aktuellem Prozentsatz (z. B. `🔄 Läuft (45 %)`), wartende Aufgaben mit ihrer Listenposition (`⏳ In Warteschlange (#2)`) sowie pausierte Aufgaben an.
+- **Pause- und Fortsetzen-Funktion:** Synchronisationsläufe können jederzeit über Buttons im Header, im Progress-Dock sowie im Tray-Menü pausiert und fortgesetzt werden.
+- **Nahtlose Wiederaufnahme nach Neustart:** Der Pausenzustand und die verbleibende Aufgaben-Warteschlange werden dauerhaft gesichert. Nach einem Neustart des Tools oder des Rechners setzt SyncVito genau an der unterbrochenen Stelle fort; bereits kopierte Dateien werden anhand ihrer Signatur sofort übersprungen.
+
 ## 1.0.9 – 2026-09-24
 
 ### Behoben

build_installer.ps1

@@ -150,7 +150,23 @@ VSVersionInfo(
             if ($LASTEXITCODE -ne 0) { throw "Der Release-Commit ist fehlgeschlagen." }
         }
         $sourceCommitted = $true
-        git push origin main
+        $pushTarget = "origin"
+        $tokenPath = @(
+            (Join-Path $env:LOCALAPPDATA "SyncVito\developer\gitea-token.dpapi"),
+            (Join-Path $env:LOCALAPPDATA "MusicBrain\developer\gitea-token.dpapi")
+        ) | Where-Object { Test-Path -LiteralPath $_ -PathType Leaf } | Select-Object -First 1
+        if (-not [string]::IsNullOrWhiteSpace($env:GITEA_TOKEN)) {
+            $pushTarget = "https://Davito:$($env:GITEA_TOKEN.Trim())@gitea.davito.synology.me/Davito/SyncVito.git"
+        }
+        elseif ($tokenPath) {
+            try {
+                $sec = (Get-Content $tokenPath -Raw).Trim() | ConvertTo-SecureString
+                $bstr = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($sec)
+                $t = [Runtime.InteropServices.Marshal]::PtrToStringBSTR($bstr)
+                $pushTarget = "https://Davito:$t@gitea.davito.synology.me/Davito/SyncVito.git"
+            } catch { }
+        }
+        git push $pushTarget main
         if ($LASTEXITCODE -ne 0) { throw "Der Quellstand konnte nicht nach Gitea gepusht werden." }
     }
 

installer/SyncVito.iss

@@ -55,3 +55,6 @@ Name: "{autodesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: de
 [Run]
 Filename: "{app}\{#MyAppExeName}"; Description: "{#MyAppName} starten"; Flags: nowait postinstall skipifsilent runascurrentuser
 Filename: "{app}\{#MyAppExeName}"; Parameters: "--updated"; Flags: nowait skipifnotsilent runascurrentuser
+
+[UninstallRun]
+Filename: "schtasks.exe"; Parameters: "/delete /tn ""{#MyAppName}"" /f"; Flags: runhidden

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "syncvito"
-version = "1.0.9"
+version = "1.0.13"
 description = "Windows-Desktopwerkzeug für lokale und NAS-Synchronisation"
 readme = "README.md"
 requires-python = ">=3.11"

src/syncvito/app.py

@@ -2,12 +2,15 @@
 
 from __future__ import annotations
 
+import os
 import sys
+import time
 from pathlib import Path
 
 from PyQt6.QtCore import QLockFile, QStandardPaths
 from PyQt6.QtWidgets import QApplication, QMessageBox, QSystemTrayIcon
 
+from syncvito.autostart import set_autostart
 from syncvito.config_store import ConfigError, ConfigStore
 from syncvito.icons import app_icon
 from syncvito.main_window import MainWindow
@@ -18,6 +21,19 @@ from syncvito.version import __version__
 __all__ = ["main"]
 
 
+def _wait_for_system_tray(application: QApplication, timeout_seconds: float = 15.0) -> bool:
+    """Wartet beim Windows-Start auf die Verfügbarkeit des Infobereichs."""
+    if QSystemTrayIcon.isSystemTrayAvailable():
+        return True
+    deadline = time.monotonic() + timeout_seconds
+    while time.monotonic() < deadline:
+        application.processEvents()
+        time.sleep(0.25)
+        if QSystemTrayIcon.isSystemTrayAvailable():
+            return True
+    return False
+
+
 def main() -> int:
     """Startet SyncVito als einzelne Windows-Instanz."""
     if "--version" in sys.argv:
@@ -33,11 +49,11 @@ def main() -> int:
 
     lock_path = Path(QStandardPaths.writableLocation(QStandardPaths.StandardLocation.TempLocation)) / "syncvito.lock"
     lock = QLockFile(str(lock_path))
-    lock.setStaleLockTime(0)
+    lock.setStaleLockTime(30000)
     if not lock.tryLock(100):
         QMessageBox.information(None, "SyncVito läuft bereits", "SyncVito ist bereits im Infobereich aktiv.")
         return 0
-    if not QSystemTrayIcon.isSystemTrayAvailable():
+    if not _wait_for_system_tray(application):
         QMessageBox.critical(None, "Infobereich nicht verfügbar", "SyncVito benötigt den Windows-Infobereich.")
         return 1
 
@@ -47,6 +63,8 @@ def main() -> int:
     except ConfigError as exc:
         QMessageBox.warning(None, "Konfiguration zurückgesetzt", str(exc))
         config = AppConfig()
+    if os.name == "nt" and config.settings.autostart:
+        set_autostart(True)
     apply_theme(application, config.settings)
     window = MainWindow(config, store)
     if "--minimized" not in sys.argv:

src/syncvito/autostart.py

@@ -3,29 +3,154 @@
 from __future__ import annotations
 
 import os
+import subprocess
 import sys
+import tempfile
 from contextlib import suppress
 from pathlib import Path
+from xml.sax.saxutils import escape as xml_escape
 
-__all__ = ["set_autostart"]
+__all__ = ["RUN_KEY_PATH", "TASK_NAME", "generate_task_xml", "set_autostart"]
+
+TASK_NAME = "SyncVito"
+RUN_KEY_PATH = r"Software\Microsoft\Windows\CurrentVersion\Run"
 
 
-def set_autostart(enabled: bool) -> None:
+def generate_task_xml(command_exe: Path, arguments: str = "--minimized") -> str:
-    """Setzt oder entfernt SyncVito unter HKCU\\...\\Run."""
+    """Erzeugt die XML-Definition für die Windows-Aufgabenplanung."""
+    escaped_exe = xml_escape(str(command_exe.resolve()))
+    escaped_args = xml_escape(arguments)
+    return (
+        '<?xml version="1.0" encoding="UTF-16"?>\n'
+        '<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">\n'
+        "  <RegistrationInfo>\n"
+        "    <Description>SyncVito Windows Autostart</Description>\n"
+        "  </RegistrationInfo>\n"
+        "  <Triggers>\n"
+        "    <LogonTrigger>\n"
+        "      <Enabled>true</Enabled>\n"
+        "      <Delay>PT5S</Delay>\n"
+        "    </LogonTrigger>\n"
+        "  </Triggers>\n"
+        "  <Principals>\n"
+        '    <Principal id="Author">\n'
+        "      <LogonType>InteractiveToken</LogonType>\n"
+        "      <RunLevel>HighestAvailable</RunLevel>\n"
+        "    </Principal>\n"
+        "  </Principals>\n"
+        "  <Settings>\n"
+        "    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>\n"
+        "    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>\n"
+        "    <StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>\n"
+        "    <AllowHardTerminate>true</AllowHardTerminate>\n"
+        "    <StartWhenAvailable>true</StartWhenAvailable>\n"
+        "    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>\n"
+        "    <IdleSettings>\n"
+        "      <StopOnIdleEnd>false</StopOnIdleEnd>\n"
+        "      <RestartOnIdle>false</RestartOnIdle>\n"
+        "    </IdleSettings>\n"
+        "    <AllowStartOnDemand>true</AllowStartOnDemand>\n"
+        "    <Enabled>true</Enabled>\n"
+        "    <Hidden>false</Hidden>\n"
+        "    <RunOnlyIfIdle>false</RunOnlyIfIdle>\n"
+        "    <WakeToRun>false</WakeToRun>\n"
+        "    <ExecutionTimeLimit>PT0S</ExecutionTimeLimit>\n"
+        "    <Priority>7</Priority>\n"
+        "  </Settings>\n"
+        '  <Actions Context="Author">\n'
+        "    <Exec>\n"
+        f"      <Command>{escaped_exe}</Command>\n"
+        f"      <Arguments>{escaped_args}</Arguments>\n"
+        "    </Exec>\n"
+        "  </Actions>\n"
+        "</Task>"
+    )
+
+
+def _run_schtasks(args: list[str]) -> subprocess.CompletedProcess[str]:
+    flags = getattr(subprocess, "CREATE_NO_WINDOW", 0) if os.name == "nt" else 0
+    return subprocess.run(
+        ["schtasks", *args],
+        capture_output=True,
+        text=True,
+        creationflags=flags,
+        check=False,
+    )
+
+
+def _delete_run_key_entry() -> None:
     if os.name != "nt":
         return
     import winreg
 
-    key_path = r"Software\Microsoft\Windows\CurrentVersion\Run"
+    with (
-    with winreg.OpenKey(winreg.HKEY_CURRENT_USER, key_path, 0, winreg.KEY_SET_VALUE) as key:
+        suppress(FileNotFoundError, OSError),
+        winreg.OpenKey(winreg.HKEY_CURRENT_USER, RUN_KEY_PATH, 0, winreg.KEY_SET_VALUE) as key,
+    ):
+        winreg.DeleteValue(key, TASK_NAME)
+
+
+def _set_run_key_entry(command: str) -> None:
+    if os.name != "nt":
+        return
+    import winreg
+
+    with winreg.OpenKey(winreg.HKEY_CURRENT_USER, RUN_KEY_PATH, 0, winreg.KEY_SET_VALUE) as key:
+        winreg.SetValueEx(key, TASK_NAME, 0, winreg.REG_SZ, command)
+
+
+def _register_scheduled_task(command_exe: Path, arguments: str) -> bool:
+    xml_content = generate_task_xml(command_exe, arguments)
+    fd, tmp_file = tempfile.mkstemp(suffix=".xml")
+    tmp_path = Path(tmp_file)
+    try:
+        with os.fdopen(fd, "w", encoding="utf-16") as f:
+            f.write(xml_content)
+        result = _run_schtasks(["/create", "/tn", TASK_NAME, "/xml", str(tmp_path), "/f"])
+        return result.returncode == 0
+    except OSError:
+        return False
+    finally:
+        with suppress(OSError):
+            tmp_path.unlink()
+
+
+def _delete_scheduled_task() -> bool:
+    result = _run_schtasks(["/delete", "/tn", TASK_NAME, "/f"])
+    return result.returncode == 0
+
+
+def set_autostart(enabled: bool) -> bool:
+    """Aktiviert oder entfernt SyncVito im Windows-Autostart.
+
+    Da SyncVito Administratorrechte (requireAdministrator) benötigt,
+    ignoriert der Windows-Explorer Einträge unter HKCU\\...\\Run beim Systemstart
+    vollständig, um unerwünschte UAC-Abfragen beim Logon zu verhindern.
+    Für erhöhte Anwendungen muss daher ein Scheduled Task in der Windows-
+    Aufgabenplanung mit 'RunLevel=HighestAvailable' verwendet werden.
+    """
+    if os.name != "nt":
+        return False
+
     if enabled:
-            executable = Path(sys.executable)
         if getattr(sys, "frozen", False):
-                command = f'"{executable}" --minimized'
+            command_exe = Path(sys.executable)
+            arguments = "--minimized"
+            reg_command = f'"{command_exe}" --minimized'
         else:
+            command_exe = Path(sys.executable)
             entry = Path(__file__).resolve().parents[2] / "main.py"
-                command = f'"{executable}" "{entry}" --minimized'
+            arguments = f'"{entry}" --minimized'
-            winreg.SetValueEx(key, "SyncVito", 0, winreg.REG_SZ, command)
+            reg_command = f'"{command_exe}" "{entry}" --minimized'
+
+        if _register_scheduled_task(command_exe, arguments):
+            _delete_run_key_entry()
+            return True
+
+        # Fallback auf Run-Schlüssel (z. B. nicht-erhöhte Entwicklungsumgebung)
+        _set_run_key_entry(reg_command)
+        return False
     else:
-            with suppress(FileNotFoundError):
+        _delete_scheduled_task()
-                winreg.DeleteValue(key, "SyncVito")
+        _delete_run_key_entry()
+        return True

src/syncvito/coordinator.py

@@ -2,8 +2,10 @@
 
 from __future__ import annotations
 
+import threading
 import traceback
 from collections import deque
+from contextlib import suppress
 from datetime import datetime, timedelta
 from pathlib import Path
 
@@ -40,15 +42,17 @@ class _WorkerSignals(QObject):
 
 
 class _SyncWorker(QRunnable):
-    def __init__(self, task: SyncTask, engine: SyncEngine) -> None:
+    def __init__(self, task: SyncTask, engine: SyncEngine, pause_event: threading.Event | None = None) -> None:
         super().__init__()
         self.task = task
         self.engine = engine
+        self.pause_event = pause_event
         self.signals = _WorkerSignals()
 
     def run(self) -> None:
         try:
-            result = self.engine.synchronize(self.task, self.signals.progress.emit)
+            cancel_check = self.pause_event.is_set if self.pause_event else None
+            result = self.engine.synchronize(self.task, self.signals.progress.emit, cancel_check=cancel_check)
         except UnavailablePathError as exc:
             self.signals.failed.emit(self.task.id, str(exc), True)
         except Exception as exc:  # noqa: BLE001 - Worker-Grenze muss UI-Absturz verhindern.
@@ -79,9 +83,13 @@ class SyncCoordinator(QObject):
         self.engine = SyncEngine()
         self.pool = QThreadPool.globalInstance()
         self.pool.setMaxThreadCount(max(2, self.pool.maxThreadCount()))
+        self._pause_event = threading.Event()
+        self._paused_task_id: str | None = None
         self._queue: deque[str] = deque()
         self._running_task_id: str | None = None
         self._retry_tasks: dict[str, list[Path]] = {}
+        self._retry_attempts: dict[str, int] = {}
+        self._retry_cooldowns: dict[str, datetime] = {}
         self._lock_messages: dict[str, str] = {}
         self._task_states: dict[str, TaskRuntimeState] = {
             task.id: TaskRuntimeState.ACTIVE if task.enabled else TaskRuntimeState.PAUSED for task in config.tasks
@@ -91,6 +99,13 @@ class SyncCoordinator(QObject):
         self._bridge.changed.connect(self._on_realtime_event)
         self.monitor = RealtimeMonitor(self._bridge.changed.emit)
 
+        if self.config.settings.pending_queue:
+            for task_id in self.config.settings.pending_queue:
+                if any(t.id == task_id and t.enabled for t in self.config.tasks) and task_id not in self._queue:
+                    self._queue.append(task_id)
+            if self.config.settings.paused and self._queue:
+                self._paused_task_id = self._queue[0]
+
         self._schedule_timer = QTimer(self)
         self._schedule_timer.setInterval(30_000)
         self._schedule_timer.timeout.connect(self._check_intervals)
@@ -101,6 +116,21 @@ class SyncCoordinator(QObject):
         self._retry_timer.start()
         self.rebuild_monitors()
 
+    @property
+    def running_task_id(self) -> str | None:
+        """ID der aktuell ausgeführten Aufgabe."""
+        return self._running_task_id
+
+    @property
+    def queued_task_ids(self) -> list[str]:
+        """IDs aller Aufgaben in der aktuellen Warteschlange."""
+        return list(self._queue)
+
+    @property
+    def paused_task_id(self) -> str | None:
+        """ID der zuletzt unterbrochenen Aufgabe."""
+        return self._paused_task_id
+
     def task_state(self, task_id: str) -> TaskRuntimeState:
         """Liefert den aktuellen Engine-Zustand einer Aufgabe."""
         return self._task_states.get(task_id, TaskRuntimeState.PAUSED)
@@ -114,6 +144,8 @@ class SyncCoordinator(QObject):
         known_ids = {task.id for task in self.config.tasks}
         self._task_states = {task_id: state for task_id, state in self._task_states.items() if task_id in known_ids}
         self._retry_tasks = {task_id: paths for task_id, paths in self._retry_tasks.items() if task_id in known_ids}
+        self._retry_attempts = {task_id: att for task_id, att in self._retry_attempts.items() if task_id in known_ids}
+        self._retry_cooldowns = {task_id: cd for task_id, cd in self._retry_cooldowns.items() if task_id in known_ids}
         self._lock_messages = {
             task_id: message for task_id, message in self._lock_messages.items() if task_id in known_ids
         }
@@ -124,6 +156,8 @@ class SyncCoordinator(QObject):
                 self._set_task_state(task.id, desired)
             if not task.enabled:
                 self._retry_tasks.pop(task.id, None)
+                self._retry_attempts.pop(task.id, None)
+                self._retry_cooldowns.pop(task.id, None)
                 self._lock_messages.pop(task.id, None)
         enabled_ids = {task.id for task in self.config.tasks if task.enabled}
         self._queue = deque(task_id for task_id in self._queue if task_id in enabled_ids)
@@ -135,20 +169,41 @@ class SyncCoordinator(QObject):
         """Zeigt an, ob momentan ein Worker aktiv ist."""
         return self._running_task_id is not None
 
+    def _save_pending_queue(self) -> None:
+        pending: list[str] = []
+        if self._running_task_id is not None:
+            pending.append(self._running_task_id)
+        for tid in self._queue:
+            if tid not in pending:
+                pending.append(tid)
+        self.config.settings.pending_queue = pending
+        with suppress(Exception):
+            self.config_store.save(self.config)
+
     def enqueue(self, task_id: str) -> None:
         """Stellt eine Aufgabe dedupliziert in die serielle Warteschlange."""
-        if self.config.settings.paused:
-            self.log_created.emit("Synchronisation", "Hinweis", "SyncVito ist pausiert.")
-            return
         task = self._task(task_id)
         if task is None or not task.enabled:
             return
+        self._retry_attempts.pop(task_id, None)
+        self._retry_cooldowns.pop(task_id, None)
+        if self.config.settings.paused:
             if task_id != self._running_task_id and task_id not in self._queue:
                 self._queue.append(task_id)
+                self._save_pending_queue()
+                self._set_task_state(task_id, TaskRuntimeState.PAUSED)
+            self.log_created.emit("Synchronisation", "Hinweis", "SyncVito ist pausiert. Aufgabe eingereiht.")
+            return
+        if task_id != self._running_task_id and task_id not in self._queue:
+            self._queue.append(task_id)
+            self._save_pending_queue()
+            self._set_task_state(task_id, TaskRuntimeState.ACTIVE)
         self._start_next()
 
     def enqueue_all(self) -> None:
         """Stellt alle aktiven Aufgaben zur manuellen Ausführung an."""
+        if self.config.settings.paused:
+            self.set_paused(False)
         for task in self.config.tasks:
             if task.enabled:
                 self.enqueue(task.id)
@@ -156,19 +211,35 @@ class SyncCoordinator(QObject):
     def set_paused(self, paused: bool) -> None:
         """Ändert den globalen Pausenzustand."""
         self.config.settings.paused = paused
-        self.config_store.save(self.config)
         if paused:
-            self.log_created.emit("Status", "Hinweis", "Alle automatischen Auslöser sind pausiert.")
+            self._pause_event.set()
+            self._save_pending_queue()
+            self.log_created.emit("Status", "Hinweis", "Synchronisation pausiert.")
         else:
+            self._pause_event.clear()
+            self._paused_task_id = None
             self.log_created.emit("Status", "Erfolg", "Synchronisation fortgesetzt.")
+            if not self._queue and self.config.settings.pending_queue:
+                for tid in self.config.settings.pending_queue:
+                    if tid not in self._queue and any(t.id == tid and t.enabled for t in self.config.tasks):
+                        self._queue.append(tid)
+            if not self._queue and not self._running_task_id:
+                for task in self.config.tasks:
+                    if task.enabled:
+                        self._queue.append(task.id)
             self._start_next()
+        with suppress(Exception):
+            self.config_store.save(self.config)
         self._emit_overall_status()
+        self.refresh_task_states()
 
     def rebuild_monitors(self) -> None:
         """Aktualisiert alle Dateisystemüberwachungen."""
         errors = self.monitor.rebuild(self.config.tasks)
         for task_id, message in errors:
-            self._retry_tasks[task_id] = []
+            self._retry_tasks.pop(task_id, None)
+            self._retry_attempts.pop(task_id, None)
+            self._retry_cooldowns.pop(task_id, None)
             self._set_task_state(task_id, TaskRuntimeState.ERROR)
             self.log_created.emit("Echtzeit", "Fehler", message)
         self._emit_overall_status()
@@ -176,6 +247,14 @@ class SyncCoordinator(QObject):
     def stop(self) -> None:
         """Stoppt die Dateisystemüberwachung beim Beenden."""
         self.monitor.stop()
+        if self._running_task_id is not None:
+            self._pause_event.set()
+            self._save_pending_queue()
+            self.config.settings.paused = True
+            with suppress(Exception):
+                self.config_store.save(self.config)
+            if hasattr(self.pool, "waitForDone"):
+                self.pool.waitForDone(1500)
 
     def _start_next(self) -> None:
         if self._running_task_id is not None or self.config.settings.paused or not self._queue:
@@ -186,11 +265,14 @@ class SyncCoordinator(QObject):
             self._start_next()
             return
         self._running_task_id = task_id
+        self._paused_task_id = None
+        self._save_pending_queue()
         self.progress_changed.emit(0, f"{task.name}: Synchronisation wird gestartet …")
         self.idle_changed.emit(False)
         self._emit_overall_status()
         self.log_created.emit(task.name, "Start", "Synchronisation gestartet.")
-        worker = _SyncWorker(task, self.engine)
+        self._pause_event.clear()
+        worker = _SyncWorker(task, self.engine, self._pause_event)
         worker.signals.progress.connect(self.progress_changed)
         worker.signals.finished.connect(self._on_finished)
         worker.signals.failed.connect(self._on_failed)
@@ -201,8 +283,26 @@ class SyncCoordinator(QObject):
         if task is None:
             self._complete_current()
             return
+
+        if result.paused:
+            self._paused_task_id = task_id
+            if task_id not in self._queue:
+                self._queue.appendleft(task_id)
+            self._save_pending_queue()
+            self._set_task_state(task_id, TaskRuntimeState.PAUSED)
+            self.log_created.emit(task.name, "Pausiert", f"Synchronisation bei {result.copied} Dateien angehalten.")
+            self._running_task_id = None
+            self.progress_changed.emit(0, f"{task.name}: Pausiert – zum Fortsetzen klicken")
+            self.idle_changed.emit(True)
+            self._emit_overall_status()
+            return
+
         task.last_run = datetime.now().isoformat(timespec="seconds")
+        if task_id in self.config.settings.pending_queue:
+            self.config.settings.pending_queue.remove(task_id)
+        with suppress(Exception):
             self.config_store.save(self.config)
+
         if result.blocked:
             paths = [blocked.path for blocked in result.blocked]
             self._retry_tasks[task_id] = paths
@@ -225,12 +325,17 @@ class SyncCoordinator(QObject):
             self._emit_lock_summary()
         if result.errors:
             # Auch zusätzliche Fehler eines teilweise blockierten Laufs sichtbar halten.
-            self._retry_tasks[task_id] = []
+            if not result.blocked:
+                self._retry_tasks.pop(task_id, None)
+                self._retry_attempts.pop(task_id, None)
+                self._retry_cooldowns.pop(task_id, None)
             for error in result.errors:
                 self.log_created.emit(task.name, "Fehler", error)
             self._set_task_state(task_id, TaskRuntimeState.ERROR)
         elif not result.blocked:
             self._retry_tasks.pop(task_id, None)
+            self._retry_attempts.pop(task_id, None)
+            self._retry_cooldowns.pop(task_id, None)
             summary = f"{result.copied} kopiert, {result.deleted} gelöscht, {result.conflicts} Konfliktkopien"
             self.log_created.emit(task.name, "Erfolg", summary)
             self._set_task_state(task_id, TaskRuntimeState.ACTIVE)
@@ -239,7 +344,9 @@ class SyncCoordinator(QObject):
     def _on_failed(self, task_id: str, detail: str, inaccessible: bool) -> None:
         task = self._task(task_id)
         name = task.name if task else "Aufgabe"
-        self._retry_tasks[task_id] = []
+        self._retry_tasks.pop(task_id, None)
+        self._retry_attempts.pop(task_id, None)
+        self._retry_cooldowns.pop(task_id, None)
         self._lock_messages.pop(task_id, None)
         self._emit_lock_summary()
         self._set_task_state(task_id, TaskRuntimeState.ERROR)
@@ -251,6 +358,9 @@ class SyncCoordinator(QObject):
         self.progress_changed.emit(100, "Abgeschlossen")
         if not self._queue:
             self.idle_changed.emit(True)
+            self.config.settings.pending_queue = []
+            with suppress(Exception):
+                self.config_store.save(self.config)
         self._emit_overall_status()
         QTimer.singleShot(200, self._start_next)
 
@@ -279,9 +389,36 @@ class SyncCoordinator(QObject):
     def _check_retries(self) -> None:
         if self.config.settings.paused or self.is_running:
             return
+        now = datetime.now()
+        ready_tasks: list[str] = []
         for task_id, paths in list(self._retry_tasks.items()):
-            if paths and all(is_file_locked(path) for path in paths):
+            cooldown_until = self._retry_cooldowns.get(task_id)
+            if cooldown_until and now < cooldown_until:
                 continue
+            attempts = self._retry_attempts.get(task_id, 0)
+            if attempts >= 5:
+                if attempts == 5:
+                    task = self._task(task_id)
+                    name = task.name if task else task_id
+                    self.log_created.emit(
+                        name,
+                        "Hinweis",
+                        "Automatische Wiederholungen vorübergehend ausgesetzt. Bitte sperrende Programme schließen.",
+                    )
+                    self._retry_attempts[task_id] = attempts + 1
+                continue
+
+            check_paths = paths[:10] if len(paths) > 10 else paths
+            if paths and all(is_file_locked(path) for path in check_paths):
+                continue
+            ready_tasks.append(task_id)
+
+        for task_id in ready_tasks:
+            self._retry_tasks.pop(task_id, None)
+            attempts = self._retry_attempts.get(task_id, 0) + 1
+            self._retry_attempts[task_id] = attempts
+            backoff_seconds = min(300, 30 * (2 ** min(attempts - 1, 4)))
+            self._retry_cooldowns[task_id] = now + timedelta(seconds=backoff_seconds)
             self.log_created.emit(
                 "Automatischer Versuch", "Hinweis", "Blockierte oder nicht erreichbare Datei wird erneut geprüft."
             )

src/syncvito/main_window.py

@@ -140,8 +140,8 @@ class MainWindow(QMainWindow):
         event.ignore()
         self.hide()
         self.tray.showMessage(
-            "SyncVito läuft weiter",
+            "SyncVito minimiert",
-            "Das Fenster wurde in den Infobereich verschoben.",
+            "SyncVito bleibt im Infobereich aktiv.",
             QSystemTrayIcon.MessageIcon.Information,
             2500,
         )
@@ -235,6 +235,9 @@ class MainWindow(QMainWindow):
         self.sync_all_button.setProperty("primary", True)
         self.sync_all_button.clicked.connect(self.coordinator.enqueue_all)
         layout.addWidget(self.sync_all_button, 0, Qt.AlignmentFlag.AlignVCenter)
+        self.header_pause_button = QPushButton("Pausieren")
+        self.header_pause_button.clicked.connect(self._toggle_pause)
+        layout.addWidget(self.header_pause_button, 0, Qt.AlignmentFlag.AlignVCenter)
         return header
 
     def _build_tasks_page(self) -> QWidget:
@@ -418,8 +421,14 @@ class MainWindow(QMainWindow):
         self.progress_bar.setRange(0, 100)
         self.progress_bar.setValue(0)
         self.progress_bar.setFormat("%p %")
+        self.dock_pause_button = QPushButton("Pausieren")
+        self.dock_pause_button.setObjectName("DockPauseButton")
+        self.dock_pause_button.setFixedHeight(34)
+        if hasattr(self, "_toggle_pause"):
+            self.dock_pause_button.clicked.connect(self._toggle_pause)
         layout.addWidget(self.progress_text)
         layout.addWidget(self.progress_bar)
+        layout.addWidget(self.dock_pause_button)
         layout.addStretch(1)
         return dock
 
@@ -478,6 +487,11 @@ class MainWindow(QMainWindow):
 
     def _refresh_tasks(self) -> None:
         self.task_table.setRowCount(len(self.config.tasks))
+        running_id = self.coordinator.running_task_id
+        queued_ids = self.coordinator.queued_task_ids
+        paused_id = self.coordinator.paused_task_id
+        is_globally_paused = self.config.settings.paused
+
         for row, task in enumerate(self.config.tasks):
             name = QTableWidgetItem(task.name)
             name.setData(Qt.ItemDataRole.UserRole, task.id)
@@ -489,9 +503,26 @@ class MainWindow(QMainWindow):
                 TriggerMode.INTERVAL: f"Alle {task.interval_minutes} Min.",
             }[task.trigger]
             trigger = QTableWidgetItem(trigger_text)
-            status = QTableWidgetItem(self._runtime_state_text(self.coordinator.task_state(task.id)))
+
+            base_state = self.coordinator.task_state(task.id)
+            if task.id == running_id:
+                val = self.progress_bar.value()
+                status_text = f"🔄 Läuft ({val}%)"
+                tip = f"Wird synchronisiert ({val}%)\n{self.progress_text.toolTip()}"
+            elif is_globally_paused and (task.id == paused_id or task.id in queued_ids):
+                status_text = "⏸ Pausiert"
+                tip = "Aufgabe pausiert – setzt beim Klick auf Fortsetzen fort."
+            elif task.id in queued_ids:
+                pos = queued_ids.index(task.id) + 1
+                status_text = f"⏳ In Warteschlange (#{pos})"
+                tip = f"Steht an Position {pos} der Warteschlange"
+            else:
+                status_text = self._runtime_state_text(base_state)
+                tip = status_text
+
+            status = QTableWidgetItem(status_text)
             for column, item in enumerate((name, pair, direction, trigger, status)):
-                item.setToolTip(item.text())
+                item.setToolTip(tip if column == 4 else item.text())
                 self.task_table.setItem(row, column, item)
 
     def _selected_task(self) -> SyncTask | None:
@@ -541,6 +572,8 @@ class MainWindow(QMainWindow):
         if task is None:
             QMessageBox.information(self, "Keine Auswahl", "Bitte zuerst eine Aufgabe auswählen.")
             return
+        if self.config.settings.paused:
+            self.coordinator.set_paused(False)
         self.coordinator.enqueue(task.id)
 
     def _persist_tasks(self, message: str) -> None:
@@ -621,10 +654,18 @@ class MainWindow(QMainWindow):
         self._mark_update_checked()
         self._set_update_indicator(None)
         self._notified_update_version = None
-        self._update_progress(100, "SyncVito ist aktuell")
         self._append_log("Update", "Erfolg", "Die installierte Version ist aktuell.")
         if manual:
+            self._update_progress(100, "SyncVito ist aktuell")
             QMessageBox.information(self, "Keine Updates", "Du verwendest bereits die aktuelle SyncVito-Version.")
+        elif not self.coordinator.is_running:
+            self.progress_text.setText("SyncVito ist aktuell")
+            QTimer.singleShot(3000, self._reset_idle_progress)
+
+    def _reset_idle_progress(self) -> None:
+        if not self.coordinator.is_running and not self.config.settings.paused:
+            self.progress_text.setText("Bereit")
+            self.progress_bar.setValue(0)
 
     def _on_update_error(self, message: str, manual: bool) -> None:
         self._update_progress(0, "Updateprüfung fehlgeschlagen")
@@ -700,17 +741,57 @@ class MainWindow(QMainWindow):
         self.tray_sync_action.setEnabled(update_idle and sync_idle)
         self.update_button.setEnabled(update_idle and sync_idle)
         self.tray_update_action.setEnabled(update_idle and sync_idle)
+        self._update_pause_action()
+        self._refresh_tasks()
 
     def _toggle_pause(self) -> None:
         self.coordinator.set_paused(not self.config.settings.paused)
         self._update_pause_action()
 
     def _update_pause_action(self) -> None:
-        self.pause_action.setText("Fortsetzen" if self.config.settings.paused else "Pausieren")
+        is_paused = self.config.settings.paused
+        is_running = self.coordinator.is_running
+        has_queue = bool(self.coordinator.queued_task_ids)
+
+        if is_paused:
+            btn_text = "▶ Fortsetzen"
+            tray_text = "Fortsetzen"
+            btn_enabled = True
+            primary = True
+        elif is_running or has_queue:
+            btn_text = "⏸ Pausieren"
+            tray_text = "Pausieren"
+            btn_enabled = True
+            primary = False
+        else:
+            btn_text = "Pausieren"
+            tray_text = "Pausieren"
+            btn_enabled = False
+            primary = False
+
+        self.pause_action.setText(tray_text)
+        self.pause_action.setEnabled(btn_enabled)
+        for btn in (getattr(self, "header_pause_button", None), getattr(self, "dock_pause_button", None)):
+            if btn is not None:
+                btn.setText(btn_text)
+                btn.setEnabled(btn_enabled)
+                btn.setProperty("primary", primary)
+                btn.style().unpolish(btn)
+                btn.style().polish(btn)
 
     def _update_progress(self, value: int, detail: str) -> None:
         self.progress_bar.setValue(value)
         self.progress_text.setText(detail)
+        running_id = self.coordinator.running_task_id
+        if running_id:
+            for row in range(self.task_table.rowCount()):
+                item = self.task_table.item(row, 0)
+                if item and item.data(Qt.ItemDataRole.UserRole) == running_id:
+                    status_item = self.task_table.item(row, 4)
+                    if status_item:
+                        status_item.setText(f"🔄 Läuft ({value}%)")
+                        status_item.setToolTip(detail)
+                    break
 
     def _append_log(self, action: str, level: str, detail: str) -> None:
         row = self.log_table.rowCount()
@@ -722,6 +803,15 @@ class MainWindow(QMainWindow):
             self.log_table.setItem(row, column, item)
         if self.log_table.rowCount() > 1000:
             self.log_table.removeRow(0)
+        self._schedule_log_scroll()
+
+    def _schedule_log_scroll(self) -> None:
+        if not getattr(self, "_log_scroll_pending", False):
+            self._log_scroll_pending = True
+            QTimer.singleShot(50, self._do_scroll_log)
+
+    def _do_scroll_log(self) -> None:
+        self._log_scroll_pending = False
         self.log_table.scrollToBottom()
 
     def _set_global_status(self, status: str, text: str) -> None:

src/syncvito/models.py

@@ -137,6 +137,7 @@ class AppSettings:
     font_weight: str = "regular"
     ui_scale: int = 100
     paused: bool = False
+    pending_queue: list[str] = field(default_factory=list)
     check_updates_on_start: bool = True
     last_update_check: str | None = None
 
@@ -148,6 +149,7 @@ class AppSettings:
             self.font_weight = "regular"
         if not self.font_family.strip():
             self.font_family = "Segoe UI Variable"
+        self.pending_queue = [str(item) for item in self.pending_queue if str(item).strip()]
 
     def to_dict(self) -> dict[str, Any]:
         """Serialisiert die Einstellungen."""
@@ -163,6 +165,7 @@ class AppSettings:
             font_weight=str(data.get("font_weight", "regular")),
             ui_scale=int(data.get("ui_scale", 100)),
             paused=bool(data.get("paused", False)),
+            pending_queue=[str(item) for item in data.get("pending_queue", []) if str(item).strip()],
             check_updates_on_start=bool(data.get("check_updates_on_start", True)),
             last_update_check=data.get("last_update_check"),
         )

src/syncvito/sync_engine.py

@@ -61,6 +61,7 @@ class SyncResult:
     deleted: int = 0
     conflicts: int = 0
     skipped: int = 0
+    paused: bool = False
     blocked: list[BlockedFile] = field(default_factory=list)
     errors: list[str] = field(default_factory=list)
     inaccessible: bool = False
@@ -68,7 +69,7 @@ class SyncResult:
     @property
     def successful(self) -> bool:
         """Zeigt an, ob der Lauf ohne Fehler und Sperren abgeschlossen wurde."""
-        return not self.errors and not self.blocked and not self.inaccessible
+        return not self.errors and not self.blocked and not self.inaccessible and not self.paused
 
 
 @dataclass(frozen=True, slots=True)
@@ -86,16 +87,31 @@ class SyncEngine:
     def __init__(self, state_store: StateStore | None = None) -> None:
         self.state_store = state_store or StateStore()
 
-    def synchronize(self, task: SyncTask, progress: ProgressCallback | None = None) -> SyncResult:
+    def synchronize(
+        self,
+        task: SyncTask,
+        progress: ProgressCallback | None = None,
+        cancel_check: Callable[[], bool] | None = None,
+    ) -> SyncResult:
         """Führt eine Aufgabe aus und isoliert Fehler auf einzelne Dateien."""
         task.validate()
         source_root = Path(task.source)
         target_root = Path(task.target)
+        if cancel_check and cancel_check():
+            return SyncResult(paused=True)
         if progress:
             progress(0, f"{task.name}: Ordner werden geprüft …")
         self._validate_roots(source_root, target_root)
-        source_files, source_dirs = self._inventory(source_root, task.selected_paths, progress, "Quelle")
+        source_files, source_dirs = self._inventory(
-        target_files, target_dirs = self._inventory(target_root, task.selected_paths, progress, "Ziel")
+            source_root, task.selected_paths, progress, "Quelle", cancel_check=cancel_check
+        )
+        if cancel_check and cancel_check():
+            return SyncResult(paused=True)
+        target_files, target_dirs = self._inventory(
+            target_root, task.selected_paths, progress, "Ziel", cancel_check=cancel_check
+        )
+        if cancel_check and cancel_check():
+            return SyncResult(paused=True)
         if progress:
             progress(0, f"{task.name}: Änderungen werden verglichen …")
         previous = self.state_store.get(task.id)
@@ -118,12 +134,34 @@ class SyncEngine:
 
         result = SyncResult()
         total = max(1, len(operations))
+        stages: list[str] = []
+        for op in operations:
+            is_dir = op.kind in {"Ordner anlegen", "Ordner löschen"}
+            stage_name = _operation_stage(op.relative, task.selected_paths, is_dir=is_dir)
+            if stage_name not in stages:
+                stages.append(stage_name)
+
+        known_locking_processes: dict[Path, tuple[LockingProcess, ...]] = {}
+        rm_query_count = 0
+        last_progress_time = 0.0
+        current_stage = ""
+
         if progress:
             progress(0, "Änderungen werden vorbereitet …")
         for index, operation in enumerate(operations, start=1):
+            is_dir = operation.kind in {"Ordner anlegen", "Ordner löschen"}
+            stage = _operation_stage(operation.relative, task.selected_paths, is_dir=is_dir)
+            if cancel_check and cancel_check():
+                result.paused = True
+                if progress:
+                    progress(round((index - 1) / total * 100), f"Pausiert bei: {stage} – {operation.relative}")
+                break
             try:
                 self._execute(operation, result)
             except (OSError, shutil.Error) as exc:
+                if isinstance(exc, FileNotFoundError) and operation.source and not operation.source.exists():
+                    result.skipped += 1
+                    continue
                 failed_path = (
                     Path(exc.filename2 or exc.filename)
                     if isinstance(exc, OSError) and (exc.filename2 or exc.filename)
@@ -131,17 +169,36 @@ class SyncEngine:
                 )
                 blocked_path = _blocked_path(operation, exc)
                 if blocked_path is not None:
-                    processes = tuple(find_locking_processes(blocked_path))
+                    parent_dir = blocked_path.parent
+                    if parent_dir in known_locking_processes:
+                        processes = known_locking_processes[parent_dir]
+                    elif rm_query_count < 10:
+                        discovered = tuple(find_locking_processes(blocked_path))
+                        rm_query_count += 1
+                        if discovered:
+                            known_locking_processes[parent_dir] = discovered
+                        processes = discovered
+                    else:
+                        processes = next(iter(known_locking_processes.values()), ())
                     result.blocked.append(BlockedFile(blocked_path, processes))
                 elif isinstance(exc, PermissionError):
                     result.errors.append(f"Zugriff verweigert: {failed_path} ({exc})")
                 else:
                     result.errors.append(f"{failed_path}: {exc}")
-            if progress:
+            now = monotonic()
+            is_last = index == total
+            stage_changed = stage != current_stage
+            if progress and (is_last or stage_changed or now - last_progress_time >= 0.05):
+                last_progress_time = now
+                current_stage = stage
+                if len(stages) > 1:
+                    stage_idx = stages.index(stage) + 1
+                    detail = f"[{stage_idx}/{len(stages)} {stage}] {operation.kind}: {operation.relative}"
+                else:
                     detail = f"{operation.kind}: {operation.relative}"
                 progress(round(index / total * 100), detail)
 
-        if not operations and progress:
+        if not operations and progress and not result.paused:
             progress(100, "Keine Änderungen gefunden")
 
         if task.direction is SyncDirection.BIDIRECTIONAL and result.successful:
@@ -168,6 +225,7 @@ class SyncEngine:
         selected_paths: list[str],
         progress: ProgressCallback | None = None,
         label: str = "Ordner",
+        cancel_check: Callable[[], bool] | None = None,
     ) -> tuple[dict[str, FileRecord], set[str]]:
         files: dict[str, FileRecord] = {}
         directories: set[str] = set()
@@ -177,6 +235,8 @@ class SyncEngine:
             progress(0, f"{label} wird eingelesen: {root}")
         try:
             for current, dir_names, file_names in os.walk(root):
+                if cancel_check and cancel_check():
+                    break
                 current_path = Path(current)
                 relative_dir = current_path.relative_to(root)
                 dir_names[:] = [
@@ -307,6 +367,9 @@ class SyncEngine:
             return
         if operation.source is None:
             return
+        if not operation.source.exists():
+            result.skipped += 1
+            return
         operation.target.parent.mkdir(parents=True, exist_ok=True)
         if operation.conflict_copy and operation.target.exists():
             conflict_path = _conflict_path(operation.target)
@@ -384,3 +447,17 @@ def _is_selected(parts: tuple[str, ...], selections: tuple[tuple[str, ...], ...]
     if not selections:
         return True
     return any(parts[: len(selection)] == selection or selection[: len(parts)] == parts for selection in selections)
+
+
+def _operation_stage(relative: str, selected_paths: list[str], is_dir: bool = False) -> str:
+    """Ermittelt den relevanten Hauptordner oder die gewählte Unterauswahl."""
+    parts = Path(relative).parts
+    if not parts:
+        return "Hauptordner"
+    for selected in selected_paths:
+        selected_parts = Path(selected).parts
+        if parts[: len(selected_parts)] == selected_parts:
+            return "/".join(selected_parts)
+    if len(parts) > 1:
+        return parts[0]
+    return parts[0] if is_dir else "Hauptordner"

tests/test_autostart.py

@@ -0,0 +1,101 @@
+import subprocess
+import sys
+from pathlib import Path
+from unittest.mock import MagicMock
+
+import pytest
+
+import syncvito.autostart as autostart
+from syncvito.autostart import generate_task_xml, set_autostart
+
+
+def test_generate_task_xml_structure() -> None:
+    cmd = Path("C:/Program Files/SyncVito/SyncVito.exe")
+    args = "--minimized"
+    xml = generate_task_xml(cmd, args)
+
+    assert '<?xml version="1.0" encoding="UTF-16"?>' in xml
+    assert "<RunLevel>HighestAvailable</RunLevel>" in xml
+    assert "<LogonType>InteractiveToken</LogonType>" in xml
+    assert "<Delay>PT5S</Delay>" in xml
+    assert "<DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>" in xml
+    assert "<StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>" in xml
+    assert "<ExecutionTimeLimit>PT0S</ExecutionTimeLimit>" in xml
+    assert "<Command>C:\\Program Files\\SyncVito\\SyncVito.exe</Command>" in xml
+    assert "<Arguments>--minimized</Arguments>" in xml
+
+
+def test_set_autostart_non_windows(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setattr(autostart.os, "name", "posix")
+    assert not set_autostart(True)
+    assert not set_autostart(False)
+
+
+def test_set_autostart_enable_scheduled_task_success(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setattr(autostart.os, "name", "nt")
+    monkeypatch.setattr(sys, "frozen", True, raising=False)
+    monkeypatch.setattr(sys, "executable", r"C:\Program Files\SyncVito\SyncVito.exe")
+
+    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=0))
+    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)
+
+    deleted_run_key = False
+
+    def mock_delete_run_key() -> None:
+        nonlocal deleted_run_key
+        deleted_run_key = True
+
+    monkeypatch.setattr(autostart, "_delete_run_key_entry", mock_delete_run_key)
+
+    result = set_autostart(True)
+    assert result is True
+    assert mock_run.called
+    create_call_args = mock_run.call_args[0][0]
+    assert create_call_args[0] == "/create"
+    assert create_call_args[1] == "/tn"
+    assert create_call_args[2] == "SyncVito"
+    assert deleted_run_key is True
+
+
+def test_set_autostart_enable_fallback_registry(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setattr(autostart.os, "name", "nt")
+    monkeypatch.setattr(sys, "frozen", True, raising=False)
+    monkeypatch.setattr(sys, "executable", r"C:\Program Files\SyncVito\SyncVito.exe")
+
+    # schtasks fails (e.g. non-elevated prompt)
+    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=1))
+    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)
+
+    registry_command = None
+
+    def mock_set_run_key(cmd: str) -> None:
+        nonlocal registry_command
+        registry_command = cmd
+
+    monkeypatch.setattr(autostart, "_set_run_key_entry", mock_set_run_key)
+
+    result = set_autostart(True)
+    assert result is False
+    assert registry_command == r'"C:\Program Files\SyncVito\SyncVito.exe" --minimized'
+
+
+def test_set_autostart_disable(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setattr(autostart.os, "name", "nt")
+
+    mock_run = MagicMock(return_value=subprocess.CompletedProcess(args=[], returncode=0))
+    monkeypatch.setattr(autostart, "_run_schtasks", mock_run)
+
+    deleted_run_key = False
+
+    def mock_delete_run_key() -> None:
+        nonlocal deleted_run_key
+        deleted_run_key = True
+
+    monkeypatch.setattr(autostart, "_delete_run_key_entry", mock_delete_run_key)
+
+    result = set_autostart(False)
+    assert result is True
+    assert mock_run.called
+    delete_call_args = mock_run.call_args[0][0]
+    assert delete_call_args == ["/delete", "/tn", "SyncVito", "/f"]
+    assert deleted_run_key is True

tests/test_coordinator.py

@@ -73,6 +73,30 @@ def test_retry_queues_all_ready_tasks(coordinator: SyncCoordinator, monkeypatch:
     monkeypatch.setattr(coordinator, "enqueue", queued.append)
     coordinator._check_retries()
     assert queued == ["first", "second"]
+    assert "first" not in coordinator._retry_tasks
+    assert "second" not in coordinator._retry_tasks
+
+
+def test_task_with_only_errors_is_not_queued_for_auto_retry(
+    coordinator: SyncCoordinator, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    task = coordinator.config.tasks[0]
+    coordinator._on_finished(task.id, SyncResult(errors=["Zugriff verweigert"]))
+    assert task.id not in coordinator._retry_tasks
+    queued = []
+    monkeypatch.setattr(coordinator, "enqueue", queued.append)
+    coordinator._check_retries()
+    assert queued == []
+
+
+def test_retry_max_attempts_cap(coordinator: SyncCoordinator, monkeypatch: pytest.MonkeyPatch) -> None:
+    task = coordinator.config.tasks[0]
+    coordinator._retry_tasks[task.id] = []
+    coordinator._retry_attempts[task.id] = 5
+    queued = []
+    monkeypatch.setattr(coordinator, "enqueue", queued.append)
+    coordinator._check_retries()
+    assert queued == []
 
 
 def test_start_resets_stale_progress_before_worker_starts(
@@ -93,3 +117,61 @@ def test_start_resets_stale_progress_before_worker_starts(
     coordinator.enqueue(coordinator.config.tasks[0].id)
     assert len(workers) == 1
     assert coordinator.current_overall_status() == ("active", "Synchronisierung läuft")
+
+
+def test_pause_and_resume_preserves_queue_and_state(coordinator: SyncCoordinator) -> None:
+    task1 = coordinator.config.tasks[0]
+    task2 = SyncTask(name="Documents", source="c:/src2", target="c:/dst2")
+    coordinator.config.tasks.append(task2)
+
+    # Global pausieren
+    coordinator.set_paused(True)
+    assert coordinator.config.settings.paused
+    assert coordinator.current_overall_status() == ("paused", "Pausiert")
+
+    # Aufgaben in Warteschlange einreihen
+    coordinator.enqueue(task1.id)
+    coordinator.enqueue(task2.id)
+
+    assert coordinator.queued_task_ids == [task1.id, task2.id]
+    assert coordinator.config.settings.pending_queue == [task1.id, task2.id]
+
+    # Fortsetzen
+    workers = []
+    from types import SimpleNamespace
+
+    coordinator.pool = SimpleNamespace(start=workers.append)
+    coordinator.set_paused(False)
+
+    assert not coordinator.config.settings.paused
+    assert len(workers) == 1
+    assert coordinator.running_task_id == task1.id
+    assert coordinator.queued_task_ids == [task2.id]
+
+
+def test_stop_persists_running_task_and_queue_for_restart(coordinator: SyncCoordinator) -> None:
+    task1 = coordinator.config.tasks[0]
+    task2 = SyncTask(name="Documents", source="c:/src2", target="c:/dst2")
+    coordinator.config.tasks.append(task2)
+
+    coordinator._running_task_id = task1.id
+    coordinator._queue.append(task2.id)
+
+    coordinator.stop()
+
+    assert coordinator.config.settings.paused is True
+    assert coordinator.config.settings.pending_queue == [task1.id, task2.id]
+
+
+def test_enqueue_all_unpauses_and_runs(coordinator: SyncCoordinator) -> None:
+    from types import SimpleNamespace
+
+    coordinator.set_paused(True)
+    workers = []
+    coordinator.pool = SimpleNamespace(start=workers.append)
+
+    coordinator.enqueue_all()
+
+    assert not coordinator.config.settings.paused
+    assert len(workers) == 1
+    assert coordinator.running_task_id == coordinator.config.tasks[0].id

tests/test_installer.py

@@ -3,9 +3,17 @@ from pathlib import Path
 
 def test_installer_launches_admin_application_with_elevated_setup_token() -> None:
     script = Path("installer/SyncVito.iss").read_text(encoding="utf-8")
-    run_entries = [line for line in script.splitlines() if line.startswith("Filename:")]
+    run_section = script.split("[Run]")[1].split("[")[0] if "[Run]" in script else ""
+    run_entries = [line for line in run_section.splitlines() if line.startswith("Filename:")]
 
     assert len(run_entries) == 2
     assert all("runascurrentuser" in entry for entry in run_entries)
     assert "postinstall" in run_entries[0]
     assert 'Parameters: "--updated"' in run_entries[1]
+
+
+def test_installer_cleans_up_scheduled_task_on_uninstall() -> None:
+    script = Path("installer/SyncVito.iss").read_text(encoding="utf-8")
+    uninstall_section = script.split("[UninstallRun]")[1].split("[")[0] if "[UninstallRun]" in script else ""
+    assert "schtasks.exe" in uninstall_section
+    assert "{#MyAppName}" in uninstall_section

tests/test_sync_engine.py

@@ -223,3 +223,73 @@ def test_bidirectional_mirrors_known_deletion(tmp_path: Path) -> None:
 
     assert result.successful
     assert not (source / "entfernen.txt").exists()
+
+
+def test_stage_progress_reporting_for_multiple_folders(tmp_path: Path) -> None:
+    source = tmp_path / "source"
+    target = tmp_path / "target"
+    (source / "AppData").mkdir(parents=True)
+    (source / "Documents").mkdir(parents=True)
+    (source / "AppData" / "config.json").write_text("{}", encoding="utf-8")
+    (source / "Documents" / "doc.txt").write_text("text", encoding="utf-8")
+    task = SyncTask(name="Backup", source=str(source), target=str(target))
+
+    messages: list[tuple[int, str]] = []
+    result = _engine(tmp_path).synchronize(task, progress=lambda v, d: messages.append((v, d)))
+
+    assert result.successful
+    assert any("[1/2 AppData]" in detail for _, detail in messages)
+    assert any("[2/2 Documents]" in detail for _, detail in messages)
+
+
+def test_pause_and_resume_continues_where_interrupted(tmp_path: Path) -> None:
+    source = tmp_path / "source"
+    target = tmp_path / "target"
+    source.mkdir()
+    (source / "a.txt").write_text("a", encoding="utf-8")
+    (source / "b.txt").write_text("b", encoding="utf-8")
+    (source / "c.txt").write_text("c", encoding="utf-8")
+    task = SyncTask(name="ResumeTest", source=str(source), target=str(target))
+    engine = _engine(tmp_path)
+
+    # 1. Unterbrechung nach der ersten Datei
+    def cancel_after_one() -> bool:
+        return (target / "a.txt").exists()
+
+    result_paused = engine.synchronize(task, cancel_check=cancel_after_one)
+    assert result_paused.paused
+    assert not result_paused.successful
+    assert (target / "a.txt").exists()
+    assert not (target / "c.txt").exists()
+
+    # 2. Fortsetzen: Bereits kopierte Datei a.txt wird übersprungen, b und c werden kopiert
+    result_resumed = engine.synchronize(task)
+    assert result_resumed.successful
+    assert result_resumed.copied == 2
+    assert (target / "a.txt").exists()
+    assert (target / "b.txt").exists()
+    assert (target / "c.txt").exists()
+
+
+def test_concurrently_deleted_source_file_is_skipped(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+    source = tmp_path / "source"
+    target = tmp_path / "target"
+    source.mkdir()
+    target.mkdir()
+    (source / "ephemeral.txt").write_text("wird gelöscht")
+    task = SyncTask(name="Transient", source=str(source), target=str(target))
+    engine = _engine(tmp_path)
+
+    # Simuliere, dass die Datei kurz vor der Ausführung gelöscht wurde
+    def delete_before_execute(operation, result):
+        if operation.source and operation.source.name == "ephemeral.txt":
+            operation.source.unlink(missing_ok=True)
+        return SyncEngine._execute(operation, result)
+
+    monkeypatch.setattr(engine, "_execute", delete_before_execute)
+    result = engine.synchronize(task)
+
+    assert result.successful
+    assert result.skipped == 1
+    assert not result.errors
+    assert not (target / "ephemeral.txt").exists()

version.txt

@@ -1 +1 @@
-1.0.9
+1.0.13