WindTerm_ 2.6.0_ Prerelease 8 Filer no save setting

system：windows 10

1. After adjusting the width, the position cannot be automatically saved. Restart to restore default settings.
It is best to customize the display method. For example: List, detailed.
If automatic directory synchronization is not set, the last directory used can be remembered after restarting.
2. When use filer downloading a file, do not prompt whether to replace it, but directly overwrite it.
It's best to have a renaming or replacement option。

Reproduce the filer behavior on Windows 10, checking whether adjusted width, position, display mode, and last directory persist after restarting. Also test downloading over an existing file; done should include a prompt with clear rename or replacement choices instead of directly overwriting it.

Written by the indexing model from the issue text.