RepoScanner.Scan() only guarded reparse points on subdirectories found
during recursion, so a configured import root that is itself a junction
walked straight through onto other drives. Apply the same
FileAttributes.ReparsePoint check to the root before scanning.
RepoImportModalViewModel.ScanAndAdd ran the full 5-level recursive scan
synchronously on the UI thread; pointing the folder picker at a broad
directory froze the app. Offload RepoScanner.Scan to Task.Run per folder
and apply results back on the UI thread.
Add a RepoScannerTests case that creates a real junction (mklink /J) at
the scan root and asserts Scan returns empty.
RepoScanner.Scan now recurses into subdirectories (max depth 5) instead
of only checking the immediate children of the chosen folder. A found
repo (.git as dir or file) is added without descending further; the
selected folder itself is checked too. Skips node_modules/bin/obj/.git/
.vs/packages and reparse points (junctions/symlinks). Per-directory
IOException/UnauthorizedAccessException no longer aborts the whole scan.
mika kuns