Enhance the Database Activity panel in SiloAuthDockWidget:
- Show latest revision number and comment inline per activity entry
- Truncate long descriptions with ellipsis, full text in tooltip
- Mark locally checked-out items with green color and "local" badge
- Double-click opens local file or triggers checkout from server
- Right-click context menu: Open in Create, Open in Browser,
Copy Part Number, View Revisions
Closes#9
d26bb6da2d