fix: only preserve Supabase if value is different from Dropbox

src/App.tsx

@@ -163,17 +163,14 @@ export default function App() {
             const articleNo = String(row[articleNoIdx]);
             const synced = syncedData[articleNo];
             
-            // Start with Dropbox values (default)
+            // Start with Dropbox values (default) - fresh from Excel
             let finalRow = [...row];
             
-            // Preserve Supabase values (edits made in the app) - this shows in Change History
+            // Only preserve Supabase value if it's DIFFERENT from Dropbox (meaning someone edited it intentionally)
+            // This keeps the TYPE = "Surprise Bath bomb" edits while avoiding stale SRP/UVP values
             if (synced) {
-              // DETECT COLUMN SHIFT: If the saved data uses the old structure (where index 12 was a numeric date),
-              // we need to shift all indices from 12 onwards by +1 to match today's Excel structure.
               const oldData = synced.data;
               const valAt12 = oldData[12];
-              // Launch Date was index 12 yesterday and it's always a numeric serial.
-              // PM Classification is index 12 today and it's a string or empty.
               const needsShift = typeof valAt12 === 'number' || (typeof valAt12 === 'string' && /^[0-9.]+$/.test(valAt12));
               
               editableColumns.forEach(idx => {
@@ -182,8 +179,19 @@ export default function App() {
                   mergeIdx = idx - 1;
                 }
                 
-                if (oldData[mergeIdx] !== undefined && oldData[mergeIdx] !== null) {
+                const dbxValue = row[idx];
-                  finalRow[idx] = oldData[mergeIdx];
+                const supabaseValue = oldData[mergeIdx];
+                
+                // Only use Supabase value if it's different from Dropbox (edited intentionally)
+                if (supabaseValue !== undefined && supabaseValue !== null) {
+                  // Compare as strings to handle numeric formatting differences
+                  const dbxStr = String(dbxValue ?? '');
+                  const supabaseStr = String(supabaseValue);
+                  
+                  // Keep Supabase value only if it was actually edited (different from Excel)
+                  if (dbxStr !== supabaseStr) {
+                    finalRow[idx] = supabaseValue;
+                  }
                 }
               });
               setRowStatuses(prev => ({ ...prev, [articleNo]: synced.status || 'synced' }));