diff --git a/src/App.tsx b/src/App.tsx
index 73c5ab9..3205e80 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -206,8 +206,6 @@ export default function App() {
   const [actualCompletionDates, setActualCompletionDates] = useState<{[key: number]: Date | null}>({});
   // 基础缓冲期天数（可配置），用于计算动态缓冲期，默认0天
   const [baseBufferDays, setBaseBufferDays] = useState<number>(0);
-  const [lockedExpectedDeliveryDateTs, setLockedExpectedDeliveryDateTs] = useState<number | null>(null);
-  const [isExpectedDeliveryDateLocked, setIsExpectedDeliveryDateLocked] = useState<boolean>(false);
   // 快照回填来源（foreign_id、款式、颜色、文本2）
   const [currentForeignId, setCurrentForeignId] = useState<string | null>(null);
   const [currentStyleText, setCurrentStyleText] = useState<string>('');
@@ -283,8 +281,6 @@ export default function App() {
     setIsRestoringSnapshot(false);
     setRestoredRecordIds([]);
     setRestoredRecordIdsText('');
-    setLockedExpectedDeliveryDateTs(null);
-    setIsExpectedDeliveryDateLocked(false);
 
     // 重置初始快照捕获状态
     try {
@@ -475,8 +471,6 @@ export default function App() {
     // 切换功能时重置全局变量，但保留新的mode
     resetGlobalState({ resetMode: false });
     setMode(m);
-    setIsExpectedDeliveryDateLocked(false);
-    setLockedExpectedDeliveryDateTs(null);
     setModeSelectionVisible(false);
   };
 
@@ -1068,26 +1062,6 @@ export default function App() {
               : deriveTimelineAdjustmentsFromResults(snapshot?.timelineResults);
             setTimelineAdjustments(normalized);
           }
-          {
-            const snapLockedFlag = snapshot?.isExpectedDeliveryDateLocked;
-            const snapLockedTs = snapshot?.lockedExpectedDeliveryDateTs;
-            const shouldLock = snapLockedFlag === true || (snapLockedFlag === undefined && snapLockedTs !== undefined && snapLockedTs !== null);
-            if (shouldLock) {
-              const ts = (typeof snapLockedTs === 'number' && Number.isFinite(snapLockedTs))
-                ? snapLockedTs
-                : expectedDeliveryTsFromField;
-              if (ts !== null && ts !== undefined) {
-                setLockedExpectedDeliveryDateTs(ts);
-                setIsExpectedDeliveryDateLocked(true);
-              } else {
-                setLockedExpectedDeliveryDateTs(null);
-                setIsExpectedDeliveryDateLocked(false);
-              }
-            } else {
-              setLockedExpectedDeliveryDateTs(null);
-              setIsExpectedDeliveryDateLocked(false);
-            }
-          }
           restoreExcludedDatesOverrideFromSnapshot(snapshot, snapshot.timelineResults);
           restoreExcludedDatesByNodeOverrideFromSnapshot(snapshot, snapshot.timelineResults);
           if (snapshot.expectedDateTimestamp) {
@@ -1238,18 +1212,6 @@ export default function App() {
                 : deriveTimelineAdjustmentsFromResults(snapshot?.timelineResults);
               setTimelineAdjustments(normalized);
             }
-            {
-              const snapLockedFlag = snapshot?.isExpectedDeliveryDateLocked;
-              const snapLockedTs = snapshot?.lockedExpectedDeliveryDateTs;
-              const shouldLock = snapLockedFlag === true || (snapLockedFlag === undefined && snapLockedTs !== undefined && snapLockedTs !== null);
-              if (shouldLock && typeof snapLockedTs === 'number' && Number.isFinite(snapLockedTs)) {
-                setLockedExpectedDeliveryDateTs(snapLockedTs);
-                setIsExpectedDeliveryDateLocked(true);
-              } else {
-                setLockedExpectedDeliveryDateTs(null);
-                setIsExpectedDeliveryDateLocked(false);
-              }
-            }
             if (snapshot.expectedDateTimestamp) {
               setExpectedDate(new Date(snapshot.expectedDateTimestamp));
             } else if (snapshot.expectedDateString) {
@@ -1591,8 +1553,6 @@ export default function App() {
                           text2: nodeSnapshot.text2,
                           mode: nodeSnapshot.mode,
                           timelineDirection: nodeSnapshot.timelineDirection,
-                          lockedExpectedDeliveryDateTs: nodeSnapshot.lockedExpectedDeliveryDateTs,
-                          isExpectedDeliveryDateLocked: nodeSnapshot.isExpectedDeliveryDateLocked,
                           selectedLabels: nodeSnapshot.selectedLabels,
                           expectedDateTimestamp: nodeSnapshot.expectedDateTimestamp,
                           expectedDateString: nodeSnapshot.expectedDateString,
@@ -1707,18 +1667,6 @@ export default function App() {
                 setTimelineResults(nodeSnapshots);
                 setTimelineVisible(true);
 
-                {
-                  const snapLockedFlag = (globalSnapshotData as any)?.isExpectedDeliveryDateLocked;
-                  const snapLockedTs = (globalSnapshotData as any)?.lockedExpectedDeliveryDateTs;
-                  const shouldLock = snapLockedFlag === true || (snapLockedFlag === undefined && snapLockedTs !== undefined && snapLockedTs !== null);
-                  if (shouldLock && typeof snapLockedTs === 'number' && Number.isFinite(snapLockedTs)) {
-                    setLockedExpectedDeliveryDateTs(snapLockedTs);
-                    setIsExpectedDeliveryDateLocked(true);
-                  } else {
-                    setLockedExpectedDeliveryDateTs(null);
-                    setIsExpectedDeliveryDateLocked(false);
-                  }
-                }
                 
                 // 恢复智能缓冲期状态（如果存在）
                 if (globalSnapshotData.bufferManagement) {
@@ -4153,24 +4101,6 @@ export default function App() {
     return Number.isFinite(ts) ? ts : null;
   };
 
-  const handleExpectedDeliveryDateLockChange = (checked: boolean) => {
-    const nextLocked = !!checked;
-    setIsExpectedDeliveryDateLocked(nextLocked);
-    if (!nextLocked) {
-      setLockedExpectedDeliveryDateTs(null);
-      return;
-    }
-    if (!expectedDate || isNaN(expectedDate.getTime())) {
-      setIsExpectedDeliveryDateLocked(false);
-      setLockedExpectedDeliveryDateTs(null);
-      if (bitable.ui.showToast) {
-        bitable.ui.showToast({ toastType: ToastType.warning, message: '请先选择客户期望日期，再开启锁交付' });
-      }
-      return;
-    }
-    setLockedExpectedDeliveryDateTs(expectedDate.getTime());
-  };
-
   const computeDynamicBufferDaysUsingEndDelta = (
     adjustments: Record<string, number>,
     expectedDateOverride?: Date | null,
@@ -4450,8 +4380,6 @@ export default function App() {
         timelineResults,
         timelineAdjustments,
         baseBufferDays,
-        lockedExpectedDeliveryDateTs,
-        isExpectedDeliveryDateLocked,
         actualCompletionDates,
         completionDateAdjustment,
         hasAppliedSuggestedBuffer,
@@ -4470,7 +4398,6 @@ export default function App() {
     setCompletionDateAdjustment(0); // 重置最后流程完成日期调整
     setActualCompletionDates({}); // 重置实际完成日期
     setBaseBufferDays(0); // 重置固定缓冲期为默认值
-    setIsExpectedDeliveryDateLocked(false);
     try { lastBufferDeficitRef.current = 0; } catch {}
     setHasAppliedSuggestedBuffer(false); // 重置建议缓冲期应用标志
     setLastSuggestedApplied(null); // 清空上次建议值
@@ -4499,14 +4426,6 @@ export default function App() {
       const normalizedAdjustments = normalizeTimelineAdjustmentsFromSnapshot(s.timelineAdjustments || {}, s.timelineResults || []);
       setTimelineAdjustments(normalizedAdjustments);
       setBaseBufferDays(s.baseBufferDays ?? 0);
-      const shouldLock = s.isExpectedDeliveryDateLocked === true || (s.isExpectedDeliveryDateLocked === undefined && s.lockedExpectedDeliveryDateTs !== null && s.lockedExpectedDeliveryDateTs !== undefined);
-      if (shouldLock && typeof s.lockedExpectedDeliveryDateTs === 'number' && Number.isFinite(s.lockedExpectedDeliveryDateTs)) {
-        setLockedExpectedDeliveryDateTs(s.lockedExpectedDeliveryDateTs);
-        setIsExpectedDeliveryDateLocked(true);
-      } else {
-        setLockedExpectedDeliveryDateTs(null);
-        setIsExpectedDeliveryDateLocked(false);
-      }
       setActualCompletionDates(s.actualCompletionDates || {});
       setCompletionDateAdjustment(s.completionDateAdjustment || 0);
       setHasAppliedSuggestedBuffer(!!s.hasAppliedSuggestedBuffer && s.hasAppliedSuggestedBuffer);
@@ -4699,9 +4618,6 @@ export default function App() {
       
       // 获取预计交付日期（交期余量的日期版本：根据客户期望日期自动计算缓冲期）
       let expectedDeliveryDate = computeExpectedDeliveryDateTsFromResults(timelineResults, timelineAdjustments, overrides?.expectedDate ?? expectedDate, completionDateAdjustment);
-      if (isExpectedDeliveryDateLocked && lockedExpectedDeliveryDateTs !== null) {
-        expectedDeliveryDate = lockedExpectedDeliveryDateTs;
-      }
       
       // 获取客户期望日期：批量模式优先使用传入的expectedDate
       let customerExpectedDate = null;
@@ -4787,8 +4703,6 @@ export default function App() {
         timelineDirection,
         excludedDatesOverride,
         excludedDatesByNodeOverride: excludedDatesByNodeOverrideRef.current || excludedDatesByNodeOverride,
-        lockedExpectedDeliveryDateTs,
-        isExpectedDeliveryDateLocked,
         selectedLabels: currentSelectedLabels,
         expectedDateTimestamp,
         expectedDateString,
@@ -6396,8 +6310,6 @@ export default function App() {
             <Select value={mode} onChange={(v) => {
               const next = v as any;
               setMode(next);
-              setIsExpectedDeliveryDateLocked(false);
-              setLockedExpectedDeliveryDateTs(null);
               setExcludedDatesOverride([]);
               setExcludedDatesOverrideText('');
             }}
@@ -7016,10 +6928,10 @@ export default function App() {
         footer={
         <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
           <Space align="center">
-              <Text>{isExpectedDeliveryDateLocked ? '缓冲期(天)(不影响已锁交付)：' : '缓冲期(天)：'}</Text>
+              <Text>缓冲期(天)：</Text>
               {(() => {
                 const dynamicBufferDays = computeDynamicBufferDaysUsingEndDelta(timelineAdjustments, expectedDate, timelineResults, completionDateAdjustment);
-                const canEdit = !isExpectedDeliveryDateLocked && !!getAdjustedLastCompletionDate(timelineResults, completionDateAdjustment);
+                const canEdit = !!getAdjustedLastCompletionDate(timelineResults, completionDateAdjustment);
                 return (
                   <InputNumber
                     value={dynamicBufferDays}
@@ -7568,9 +7480,6 @@ export default function App() {
                         adjustedCompletionDate.setDate(adjustedCompletionDate.getDate() + completionDateAdjustment);
                         const deliveryDate = new Date(adjustedCompletionDate);
                         deliveryDate.setDate(deliveryDate.getDate() + dynamicBufferDays);
-                        const lockedDeliveryDate = (isExpectedDeliveryDateLocked && lockedExpectedDeliveryDateTs !== null)
-                          ? new Date(lockedExpectedDeliveryDateTs)
-                          : null;
 
                         return (
                           <>
@@ -7611,7 +7520,7 @@ export default function App() {
                               </span>
                               <span style={{ fontSize: 16, color: '#1890ff', fontWeight: 700 }}>=</span>
                               <span style={{ fontSize: 13, color: '#666', fontWeight: 600 }}>
-                                {lockedDeliveryDate ? '结束日期（未锁）' : '结束日期'}
+                                结束日期
                               </span>
                               <span style={{
                                 fontSize: 13,
@@ -7626,24 +7535,6 @@ export default function App() {
                               </span>
                             </div>
 
-                            {lockedDeliveryDate && (
-                              <div style={{ marginTop: 8, display: 'flex', alignItems: 'center', justifyContent: 'flex-start', gap: 8, flexWrap: 'nowrap', whiteSpace: 'nowrap', overflowX: 'auto' }}>
-                                <Text style={{ fontSize: 13, color: '#333', fontWeight: 600, whiteSpace: 'nowrap' }}>结束日期（已锁定）</Text>
-                                <span style={{
-                                  fontSize: 13,
-                                  color: '#722ed1',
-                                  backgroundColor: 'rgba(114, 46, 209, 0.08)',
-                                  border: '1px solid rgba(114, 46, 209, 0.24)',
-                                  borderRadius: 6,
-                                  padding: '3px 8px',
-                                  fontWeight: 700,
-                                  whiteSpace: 'nowrap'
-                                }}>
-                                  {formatDate(lockedDeliveryDate)}（{getDayOfWeek(lockedDeliveryDate)}）
-                                </span>
-                              </div>
-                            )}
-
                             {/* 第二行：客户期望日期（可更改，优化展示为标签样式） */}
                             <div style={{ marginTop: 8, display: 'flex', alignItems: 'center', justifyContent: 'flex-start', gap: 8, flexWrap: 'nowrap', whiteSpace: 'nowrap', overflowX: 'auto' }}>
                               <Text style={{ fontSize: 13, color: '#333', fontWeight: 600, whiteSpace: 'nowrap' }}>客户期望日期（可更改）</Text>
@@ -7651,7 +7542,6 @@ export default function App() {
                                 style={{ width: '200px' }}
                                 placeholder="请选择客户期望日期"
                                 value={expectedDate ?? undefined}
-                                disabled={isExpectedDeliveryDateLocked}
                                 onChange={(date) => {
                                   if (date instanceof Date) {
                                     setExpectedDate(date);