Fix reset tabs scope in convert view

DONE.md

@@ -820,6 +820,7 @@ This file tracks completed features, fixes, and milestones.
 - ✅ Added unit selector for manual video bitrate entry
 - ✅ Reset now restores full default convert settings even with no config file
 - ✅ Reset now forces resolution and frame rate back to Source
+- ✅ Fixed reset handler scope for convert tabs
 - ✅ Stabilized video seeking and embedded rendering
 - ✅ Improved player window positioning
 - ✅ Fixed clear video functionality

TODO.md

@@ -53,6 +53,7 @@ This file tracks upcoming features, improvements, and known issues.
   - Manual video bitrate uses a unit selector (KB/MB/GB)
   - Reset restores full default convert settings
   - Reset forces resolution/frame rate back to Source
+  - Reset handler scope fixed for convert tabs
 
 ## Priority Features for dev20+
 

main.go

@@ -5283,6 +5283,7 @@ func buildConvertView(state *appState, src *videoSource) fyne.CanvasObject {
 		bitrateContainer     *fyne.Container
 		targetSizeContainer  *fyne.Container
 		resetConvertDefaults func()
+		tabs                 *container.AppTabs
 	)
 	var (
 		updateEncodingControls  func()
@@ -6910,7 +6911,7 @@ func buildConvertView(state *appState, src *videoSource) fyne.CanvasObject {
 		updateQualityVisibility()
 	}
 
-	tabs := container.NewAppTabs(
+	tabs = container.NewAppTabs(
 		container.NewTabItem("Simple", simpleScrollBox),
 		container.NewTabItem("Advanced", advancedScrollBox),
 	)