fix: desktop bugsweep regressions

Author: lukisch

core/editor.py

@@ -306,7 +306,7 @@ def lineNumberAreaPaintEvent(self, event):
                 else:
                     painter.setPen(QColor(100, 100, 100))
                 painter.drawText(0, top, self.lineNumberArea.width() - 5,
-                                 self.fontMetrics().height(), Qt.AlignRight, str(line_num))
+                                 self.fontMetrics().height(), Qt.AlignmentFlag.AlignRight, str(line_num))
             block = block.next()
             if not block.isValid():
                 break

core/output.py

@@ -55,6 +55,11 @@ def setup_ui(self):
 
     def run_command(self, command: list):
         """Startet einen Prozess mit dem gegebenen Kommando"""
+        if not command:
+            self.status_label.setText("Kein Befehl zum Ausführen")
+            self.stop_btn.setEnabled(False)
+            return
+
         if self.process:
             for sig in (
                 self.process.readyReadStandardOutput,

tests/test_bug_regressions.py

@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+"""Regressionstests Bugfix-Library-Transfer Batch #24 — DEV_CodeBox.
+
+D2: Veraltete Qt-Enums in PySide6 6.4+ dürfen nicht mehr als bare Werte vorkommen.
+"""
+
+import py_compile
+import unittest
+from pathlib import Path
+
+PROJ = Path(__file__).parent.parent
+
+
+class TestD2DeprecatedQtEnums(unittest.TestCase):
+    """D2 — Kein bare Qt-Enum in den Quelldateien."""
+
+    def test_editor_no_bare_align(self):
+        src = (PROJ / "core" / "editor.py").read_text(encoding="utf-8")
+        self.assertNotIn("Qt.AlignRight", src,
+                         "Qt.AlignRight (bare) — muss Qt.AlignmentFlag.AlignRight sein")
+
+    def test_main_window_no_bare_orientation(self):
+        src = (PROJ / "ui" / "main_window.py").read_text(encoding="utf-8")
+        self.assertNotIn("Qt.Horizontal", src,
+                         "Qt.Horizontal (bare) — muss Qt.Orientation.Horizontal sein")
+        self.assertNotIn("Qt.Vertical", src,
+                         "Qt.Vertical (bare) — muss Qt.Orientation.Vertical sein")
+
+    def test_syntax_valid(self):
+        for rel in ("core/editor.py", "ui/main_window.py"):
+            py_compile.compile(str(PROJ / rel), doraise=True)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_output_panel.py

@@ -48,6 +48,15 @@ def test_run_command_no_disconnect_when_no_prior_process(self):
             mock_cls.return_value = mock_new
             self.panel.run_command(["echo", "test"])
 
+    def test_run_command_rejects_empty_command(self):
+        """Leere Provider-Kommandos dürfen nicht per IndexError crashen."""
+        with patch("core.output.QProcess") as mock_cls:
+            self.panel.run_command([])
+
+        mock_cls.assert_not_called()
+        self.assertFalse(self.panel.stop_btn.isEnabled())
+        self.assertIn("Kein Befehl", self.panel.status_label.text())
+
     def test_run_command_stop_btn_enabled_after_start(self):
         """stop_btn muss nach run_command() aktiviert sein."""
         with patch("core.output.QProcess") as mock_cls:

ui/main_window.py

@@ -103,15 +103,15 @@ def setup_ui(self):
         layout.setContentsMargins(0, 0, 0, 0)
 
         # Horizontaler Splitter: ProjectView | Editor+Output
-        self.h_splitter = QSplitter(Qt.Horizontal)
+        self.h_splitter = QSplitter(Qt.Orientation.Horizontal)
 
         # Linke Seite: Project-View (Dateibaum)
         self.project_view = ProjectView()
         self.project_view.fileDoubleClicked.connect(self._open_file_from_project)
         self.h_splitter.addWidget(self.project_view)
 
         # Rechte Seite: Vertikaler Splitter (Editor oben, Output/Terminal unten)
-        self.v_splitter = QSplitter(Qt.Vertical)
+        self.v_splitter = QSplitter(Qt.Orientation.Vertical)
 
         # Tab-Widget (Editor)
         self.tab_widget = TabWidget()