fix: align market selection checkboxes

src/content/market/dom-sync.ts

@@ -431,7 +431,7 @@ function readDivGridAuthorIds(root: ParentNode): string[] | null {
       ) ?? null
     : null;
   const authorColumn = authorSection
-    ? getDirectContentColumns(authorSection)[0] ?? null
+    ? getNativeAuthorColumn(authorSection)
     : null;
   if (!authorColumn) {
     return null;
@@ -497,7 +497,7 @@ function syncDivGridRoot(root: HTMLElement): MarketTableDom | null {
     type: "body"
   });
 
-  const authorColumn = getDirectContentColumns(authorSection)[0] ?? null;
+  const authorColumn = getNativeAuthorColumn(authorSection);
   const actionColumn = getActionColumn(rightSection);
 
   if (!authorColumn || !actionColumn) {
@@ -752,7 +752,11 @@ function ensureDivHeaderCell(
   nextCell.textContent = label;
   applyColumnWidth(nextCell, field);
   applyPluginHeaderCellStyles(nextCell);
-  container.appendChild(nextCell);
+  if (field === SELECTION_COLUMN_KEY) {
+    container.insertBefore(nextCell, templateCell);
+  } else {
+    container.appendChild(nextCell);
+  }
   return nextCell;
 }
 
@@ -774,7 +778,11 @@ function ensureDivBodyColumn(
   nextColumn.dataset.marketColumnGroup = field;
   applyColumnWidth(nextColumn, field);
   syncDivColumnCells(nextColumn, templateColumn, field, rowCount);
-  container.appendChild(nextColumn);
+  if (field === SELECTION_COLUMN_KEY) {
+    container.insertBefore(nextColumn, templateColumn);
+  } else {
+    container.appendChild(nextColumn);
+  }
   return nextColumn;
 }
 
@@ -802,7 +810,9 @@ function syncDivColumnCells(
       templateCells[index] ?? templateCells[templateCells.length - 1] ?? null;
     const nextCell =
       field === SELECTION_COLUMN_KEY
-        ? createBareContentCell(column.ownerDocument)
+        ? templateCell
+          ? createSelectionContentCell(templateCell)
+          : createBareContentCell(column.ownerDocument)
         : templateCell
           ? cloneElementShallow(templateCell)
           : createBareContentCell(column.ownerDocument);
@@ -1106,6 +1116,21 @@ function getActionColumn(bodySection: HTMLElement): HTMLElement | null {
   return columns[columns.length - 1] ?? null;
 }
 
+function getNativeAuthorColumn(authorSection: HTMLElement): HTMLElement | null {
+  return (
+    getDirectContentColumns(authorSection).find(
+      (column) =>
+        !column.dataset.marketColumnGroup &&
+        getDirectContentCells(column).some(
+          (cell) =>
+            cell.querySelector("a") ||
+            cell.querySelector(".author-nickname") ||
+            Boolean(cell.dataset.authorId)
+        )
+    ) ?? null
+  );
+}
+
 function getDirectHeaderCells(section: Element): HTMLElement[] {
   return Array.from(section.querySelectorAll(".header-cell")).filter(
     (cell): cell is HTMLElement =>
@@ -1162,6 +1187,13 @@ function createBareContentCell(document: Document): HTMLElement {
   return cell;
 }
 
+function createSelectionContentCell(templateCell: HTMLElement): HTMLElement {
+  const cell = cloneElementShallow(templateCell);
+  cell.removeAttribute("data-testid");
+  cell.removeAttribute("data-author-id");
+  return cell;
+}
+
 function extractAuthorId(authorCell: HTMLElement): string {
   const explicitAuthorId = authorCell.dataset.authorId;
   if (explicitAuthorId) {