fix: undo.bat — errorlevel checks, visible errors, cross-drive robocopy

organize.py

@@ -571,17 +571,40 @@ def _write_logs(entries: list[dict[str, str]],
     with undo_path.open('w', encoding='utf-8') as f:
         f.write('@echo off\r\n')
         f.write('title Raskidator-3000 — Undo move\r\n')
+        f.write('setlocal enabledelayedexpansion\r\n')
         f.write('echo Restoring files...\r\n')
         f.write('echo.\r\n')
+        f.write('set FAILED=0\r\n')
         # Reverse: move destination → source
         for entry in reversed(entries):
             src = entry['source']
             dst = entry['destination']
-            f.write(f'move "{dst}" "{src}" >nul 2>&1\r\n')
-            if not f.write:  # impossible but keep mypy happy
-                pass
+            # Normalise to backslashes for Windows
+            src = src.replace('/', '\\')
+            dst = dst.replace('/', '\\')
+            fname = dst.rsplit('\\', 1)[-1] if '\\' in dst else dst
+
+            src_drive = src[:2] if len(src) >= 2 and src[1] == ':' else ''
+            dst_drive = dst[:2] if len(dst) >= 2 and dst[1] == ':' else ''
+
+            if src_drive and dst_drive and src_drive.upper() != dst_drive.upper():
+                # Cross-drive — robocopy /move
+                src_dir = src.rsplit('\\', 1)[0] if '\\' in src else src
+                dst_dir = dst.rsplit('\\', 1)[0] if '\\' in dst else dst
+                f.write(f'robocopy "{dst_dir}" "{src_dir}" "{fname}" /move /ndl /njh /njs /nfl >nul\r\n')
+                f.write(f'if errorlevel 8 echo FAILED (cross-drive: {src_drive} → {dst_drive})\r\n')
+                f.write(f'if errorlevel 8 set /a FAILED+=1\r\n')
+            else:
+                f.write(f'move "{dst}" "{src}"\r\n')
+                f.write(f'if errorlevel 1 echo FAILED: {fname}\r\n')
+                f.write(f'if errorlevel 1 set /a FAILED+=1\r\n')
+        f.write('echo.\r\n')
+        f.write(f'echo Restored {len(entries)} files. Failures: !FAILED!\r\n')
+        f.write('if !FAILED! gtr 0 (\r\n')
+        f.write('  echo.\r\n')
+        f.write('  echo Some files could not be restored.^ See above for details.\r\n')
+        f.write(')\r\n')
         f.write('echo.\r\n')
-        f.write(f'echo Restored {len(entries)} files.\r\n')
         f.write('pause\r\n')