Extract the recent-files.json deletion logic into a standalone
clearRecentFilesOnDisk() function and call it from both the menu
click handler and the ipcMain.on handler. Previously the menu sent
the message in the wrong direction (main→renderer instead of
renderer→main), causing the feature to silently no-op. Both paths now
use the same function and send the correct 'recent-files-cleared'
notification to keep the renderer in sync.
Amit Haridas