Improves drag and drop conversion behavior

Resets scroll state and stops edge scrolling when a drag event converts between all-day and timed events, preventing unexpected scrolling behavior during conversion.

src/managers/DragDropManager.ts

@@ -143,6 +143,19 @@ export class DragDropManager {
       console.log('🛑 DragDropManager: Edge-scroll stopped');
     });
 
+    // Reset scrollDeltaY when event converts (new clone created)
+    this.eventBus.on('drag:mouseenter-header', () => {
+      console.log('🔄 DragDropManager: Event converting to all-day - resetting scrollDeltaY');
+      this.scrollDeltaY = 0;
+      this.lastScrollTop = 0;
+    });
+
+    this.eventBus.on('drag:mouseenter-column', () => {
+      console.log('🔄 DragDropManager: Event converting to timed - resetting scrollDeltaY');
+      this.scrollDeltaY = 0;
+      this.lastScrollTop = 0;
+    });
+
   }
   private handleGridRendered(event: CustomEvent) {
     this.scrollableContent = document.querySelector('swp-scrollable-content');

src/managers/EdgeScrollManager.ts

@@ -60,6 +60,16 @@ export class EdgeScrollManager {
 
     this.eventBus.on('drag:end', () => this.stopDrag());
     this.eventBus.on('drag:cancelled', () => this.stopDrag());
+    
+    // Stop scrolling when event converts to/from all-day
+    this.eventBus.on('drag:mouseenter-header', () => {
+      console.log('🔄 EdgeScrollManager: Event converting to all-day - stopping scroll');
+      this.stopDrag();
+    });
+    
+    this.eventBus.on('drag:mouseenter-column', () => {
+      this.startDrag();
+    });
   }
 
   private startDrag(): void {