Restored correct function on event splitting by drag.

src/components/EventOverlay.vue

@@ -167,6 +167,24 @@ function startLocalDrag(init, evt) {
     else anchorOffset = daysInclusive(init.startDate, init.anchorDate) - 1
   }
 
+  // Capture original repeating pattern & weekday (for weekly repeats) so we can rotate relative to original
+  let originalWeekday = null
+  let originalPattern = null
+  if (init.mode === 'move') {
+    try {
+      originalWeekday = new Date(init.startDate + 'T00:00:00').getDay()
+      const baseEv = store.getEventById(init.id)
+      if (
+        baseEv &&
+        baseEv.isRepeating &&
+        baseEv.repeat === 'weeks' &&
+        Array.isArray(baseEv.repeatWeekdays)
+      ) {
+        originalPattern = [...baseEv.repeatWeekdays]
+      }
+    } catch {}
+  }
+
   dragState.value = {
     ...init,
     anchorOffset,
@@ -174,6 +192,9 @@ function startLocalDrag(init, evt) {
     eventMoved: false,
     tentativeStart: init.startDate,
     tentativeEnd: init.endDate,
+    originalWeekday,
+    originalPattern,
+    realizedId: null, // for virtual occurrence converted to real during drag
   }
 
   // Begin compound history session (single snapshot after drag completes)
@@ -238,8 +259,41 @@ function onDragPointerMove(e) {
   if (ns === st.tentativeStart && ne === st.tentativeEnd) return
   st.tentativeStart = ns
   st.tentativeEnd = ne
-  // Real-time update only for non-virtual events (avoid repeated split operations)
-  if (!st.isVirtual) {
+  if (st.mode === 'move') {
+    if (st.isVirtual) {
+      // On first movement convert virtual occurrence into a real new event (split series)
+      if (!st.realizedId) {
+        const newId = store.splitMoveVirtualOccurrence(st.id, st.startDate, ns, ne)
+        if (newId) {
+          st.realizedId = newId
+          st.id = newId
+          st.isVirtual = false
+        } else {
+          return
+        }
+      } else {
+        // Subsequent moves: update range without rotating pattern automatically
+        store.setEventRange(st.id, ns, ne, { mode: 'move', rotatePattern: false })
+      }
+    } else {
+      // Normal non-virtual move; rotate handled in setEventRange
+      store.setEventRange(st.id, ns, ne, { mode: 'move', rotatePattern: false })
+    }
+    // Manual rotation relative to original pattern (keeps pattern anchored to initially grabbed weekday)
+    if (st.originalPattern && st.originalWeekday != null) {
+      try {
+        const currentWeekday = new Date(ns + 'T00:00:00').getDay()
+        const shift = currentWeekday - st.originalWeekday
+        const rotated = store._rotateWeekdayPattern([...st.originalPattern], shift)
+        const ev = store.getEventById(st.id)
+        if (ev && ev.repeat === 'weeks') {
+          ev.repeatWeekdays = rotated
+          store.touchEvents()
+        }
+      } catch {}
+    }
+  } else if (!st.isVirtual) {
+    // Resizes on real events update immediately
     applyRangeDuringDrag(
       { id: st.id, isVirtual: st.isVirtual, mode: st.mode, startDate: ns, endDate: ne },
       ns,