Add duplicate clip action in timeline
Summary
Adds a "Duplicate Clip" action to the timeline that creates an exact copy of the selected clip and places it immediately after the original on the same track, including all effects and keyframes.
The action is available via:
- Right-click context menu on a clip -> "Duplicate Clip"
- Keyboard shortcut: Ctrl+D (configurable)
Testing
- Single clip duplicated correctly after original
- Effects and keyframes preserved on duplicate
- Ctrl+D works when a clip is selected
- No crash when nothing is selected (silent fail)
- Multiple clips selected: shows "could not duplicate" ,only single clip duplication supported for now,
- Group duplication not supported yet, clips in a group duplicate individually