diff --git a/src/gui/browser/file_browser.py b/src/gui/browser/file_browser.py
index 6a79c87..836251c 100644
--- a/src/gui/browser/file_browser.py
+++ b/src/gui/browser/file_browser.py
@@ -879,10 +879,13 @@ def _add_to_blacklist(self, path: str):
             )
 
     def _sync_path(self, path: str):
-        """Öffnet das Sync-Panel für den Pfad."""
+        """Öffnet das Sync-Panel und legt ein Sync-Paar mit dem Pfad als Quelle an."""
         main_win = self.window()
         if hasattr(main_win, 'show_sync_panel'):
             main_win.show_sync_panel()
+        sidebar = getattr(main_win, 'sidebar', None)
+        if sidebar is not None and hasattr(sidebar, 'sync_panel'):
+            sidebar.sync_panel.add_pair_for_path(path)
 
     # ------------------------------------------------------------------ #
     # Drag-and-Drop                                                        #
diff --git a/src/modules/sync/sync_manager.py b/src/modules/sync/sync_manager.py
index 03b53d6..28a5dca 100644
--- a/src/modules/sync/sync_manager.py
+++ b/src/modules/sync/sync_manager.py
@@ -708,7 +708,17 @@ def _on_selection_changed(self):
         self.preview_btn.setEnabled(has_selection)
 
     def _add_pair(self):
-        dialog = SyncPairDialog(parent=self)
+        self._add_pair_dialog(SyncPairDialog(parent=self))
+
+    def add_pair_for_path(self, path: str):
+        """Öffnet "Neues Sync-Paar" mit dem Ordner von `path` als Quelle."""
+        folder = path if os.path.isdir(path) else os.path.dirname(path)
+        pair = SyncPair(id="", name=os.path.basename(os.path.normpath(folder)), source=folder, target="")
+        dialog = SyncPairDialog(pair, parent=self)
+        dialog.setWindowTitle("Neues Sync-Paar")
+        self._add_pair_dialog(dialog)
+
+    def _add_pair_dialog(self, dialog: "SyncPairDialog"):
         if dialog.exec() == QDialog.DialogCode.Accepted:
             pair = dialog.get_sync_pair()
             self.sync_pairs.append(pair)
diff --git a/tests/test_context_menu_actions.py b/tests/test_context_menu_actions.py
index 66f36b4..40962b0 100644
--- a/tests/test_context_menu_actions.py
+++ b/tests/test_context_menu_actions.py
@@ -166,3 +166,35 @@ def test_spec_bundles_translator_and_locales():
     spec = (ROOT / "ExplorerPro.spec").read_text(encoding="utf-8")
     assert "pathex=[str(src_dir), str(project_root)]" in spec
     assert "(str(project_root / 'locales'), 'locales')" in spec
+
+
+def test_context_menu_sync_prefills_source_folder(tmp_path, monkeypatch):
+    _ensure_app()
+    from gui.main_window import MainWindow
+    from modules.sync import sync_manager
+
+    target = tmp_path / "daten.txt"
+    target.write_text("x", encoding="utf-8")
+    seen = {}
+
+    def fake_exec(dialog):
+        seen["source"] = dialog.source_edit.text()
+        seen["name"] = dialog.name_edit.text()
+        seen["title"] = dialog.windowTitle()
+        return 0  # abgebrochen: nichts speichern
+
+    monkeypatch.setattr(sync_manager.SyncPairDialog, "exec", fake_exec)
+    win = MainWindow()
+    _context_actions(win.file_browser, target, monkeypatch)["🔄 Synchronisieren"].trigger()
+    assert os.path.normpath(seen["source"]) == os.path.normpath(str(tmp_path))
+    assert seen["name"] == tmp_path.name
+    assert seen["title"] == "Neues Sync-Paar"
+    win.deleteLater()
+
+
+def test_translations_complete_for_all_tier2_languages():
+    import json
+
+    data = json.loads((ROOT / "locales" / "translations.json").read_text(encoding="utf-8"))
+    missing = [k for k, v in data.items() for lang in ("en", "es", "zh", "ja", "ru") if not v.get(lang)]
+    assert missing == []