file state tracking with visual indicators for deleted and recreated files

[djad04]

File lifecycle tracking system that detects on-disk deletions, modifications, and restorations, provides clear visual feedback through tab styling, tooltips, context menus, and warning banners, and allows recovery of deleted files with the option to override disk changes using the in-memory version or reload the disk version

Features Implemented

File Deletion Detection

When a file is detected as missing from disk :

Tab turns red with strikethrough text

Tooltip shows "deleted" suffix

• When hovering over the tab, the tooltip displays the filename with "deleted" appended

Right-click context menu adds "Restore" and "Save As" options

File deleted warning banner

---

File Recreated Detection

When a previously deleted file is recreated on disk, :

Modification Check

• When a deleted file reappears on disk we compare modification timestamps:
• If the timestamp is identical: the file is treated as unchanged; the tab returns to its normal state and the warning banner is hidden.
• If the timestamp differs: a recreated state is triggered, the tab changes to yellow, and a warning banner is displayed.

Warning banner updates to "FileRecreated" state

• action buttons: "Reload" and "Overwrite"
• Helps user decide whether to reload the new file or overwrite it with current in-memory version

---

Save Handling

When attempting to save a document whose file has been recreated on disk with different content:
a conflict popup appears

---