Event resize/move bugs and UX.

src/components/EventOverlay.vue

@@ -26,10 +26,12 @@
       >
         <span class="event-title">{{ span.title }}</span>
         <div
+          v-if="!span.hasPrevWeek"
           class="resize-handle left"
           @pointerdown="handleResizePointerDown(span, 'resize-left', $event)"
         ></div>
         <div
+          v-if="!span.hasNextWeek"
           class="resize-handle right"
           @pointerdown="handleResizePointerDown(span, 'resize-right', $event)"
         ></div>
@@ -92,6 +94,17 @@ const eventSegments = computed(() => {
     } else {
       sp.hasNextWeek = false
     }
+    // Compute full occurrence start/end (may extend beyond visible week)
+    if (sp.minNDay != null) {
+      sp.occurrenceStartDate = addDaysStr(sp.startDate, -sp.minNDay)
+      if (sp.days != null) {
+        sp.occurrenceEndDate = addDaysStr(sp.occurrenceStartDate, sp.days - 1)
+      } else {
+        // Fallback: approximate using maxNDay if days unknown
+        const total = (sp.maxNDay || 0) + 1
+        sp.occurrenceEndDate = addDaysStr(sp.occurrenceStartDate, total - 1)
+      }
+    }
   })
   // Sort so longer multi-day first, then earlier, then id for stability
   spans.sort((a, b) => {
@@ -206,7 +219,10 @@ function handleEventPointerDown(span, event) {
   if (event.target.classList.contains('resize-handle')) return
   event.stopPropagation()
   const baseId = span.id
-  let anchorDate = span.startDate
+  // Use full occurrence boundaries for drag logic (not clipped week portion)
+  const fullStart = span.occurrenceStartDate || span.startDate
+  const fullEnd = span.occurrenceEndDate || span.endDate
+  let anchorDate = fullStart
   try {
     const spanDays = daysInclusive(span.startDate, span.endDate)
     const targetEl = event.currentTarget
@@ -218,7 +234,8 @@ function handleEventPointerDown(span, event) {
       if (!isFinite(dayIndex)) dayIndex = 0
       if (dayIndex < 0) dayIndex = 0
       if (dayIndex >= spanDays) dayIndex = spanDays - 1
-      anchorDate = addDaysStr(span.startDate, dayIndex)
+      const absoluteOffset = (span.minNDay || 0) + dayIndex
+      anchorDate = addDaysStr(fullStart, absoluteOffset)
     }
   } catch (e) {}
   startLocalDrag(
@@ -229,8 +246,8 @@ function handleEventPointerDown(span, event) {
       pointerStartX: event.clientX,
       pointerStartY: event.clientY,
       anchorDate,
-      startDate: span.startDate,
-      endDate: span.endDate,
+      startDate: fullStart,
+      endDate: fullEnd,
       n: span.n,
     },
     event,
@@ -240,6 +257,8 @@ function handleEventPointerDown(span, event) {
 function handleResizePointerDown(span, mode, event) {
   event.stopPropagation()
   const baseId = span.id
+  const fullStart = span.occurrenceStartDate || span.startDate
+  const fullEnd = span.occurrenceEndDate || span.endDate
   startLocalDrag(
     {
       id: baseId,
@@ -248,8 +267,8 @@ function handleResizePointerDown(span, mode, event) {
       pointerStartX: event.clientX,
       pointerStartY: event.clientY,
       anchorDate: null,
-      startDate: span.startDate,
-      endDate: span.endDate,
+      startDate: fullStart,
+      endDate: fullEnd,
       n: span.n,
     },
     event,
@@ -437,28 +456,21 @@ function onDragPointerUp(e) {
   store.$history?.endCompound()
 }
 
-function computeTentativeRangeFromPointer(st, dropDateStr) {
+const min = (a, b) => (a < b ? a : b)
+const max = (a, b) => (a > b ? a : b)
+
+function computeTentativeRangeFromPointer(st, current) {
   const anchorOffset = st.anchorOffset || 0
   const spanDays = st.originSpanDays || daysInclusive(st.startDate, st.endDate)
-  let startStr = st.startDate
-  let endStr = st.endDate
   if (st.mode === 'move') {
-    startStr = addDaysStr(dropDateStr, -anchorOffset)
-    endStr = addDaysStr(startStr, spanDays - 1)
-  } else if (st.mode === 'resize-left') {
-    startStr = dropDateStr
-    endStr = st.endDate
-  } else if (st.mode === 'resize-right') {
-    startStr = st.startDate
-    endStr = dropDateStr
+    const ns = addDaysStr(current, -anchorOffset)
+    const ne = addDaysStr(ns, spanDays - 1)
+    return [ns, ne]
   }
-  return normalizeDateOrder(startStr, endStr)
-}
+  if (st.mode === 'resize-left') return [min(st.endDate, current), st.endDate]
+  if (st.mode === 'resize-right') return [st.startDate, max(st.startDate, current)]
 
-function normalizeDateOrder(aStr, bStr) {
-  if (!aStr) return [bStr, bStr]
-  if (!bStr) return [aStr, aStr]
-  return aStr <= bStr ? [aStr, bStr] : [bStr, aStr]
+  return [st.startDate, st.endDate]
 }
 
 function applyRangeDuringDrag(st, startDate, endDate) {