Preserve QExcell font families

src/features/qexcell/QExcell.tsx

@@ -82,6 +82,7 @@ const horizontalAlignOptions = [
   { value: "center", label: "По центру", icon: AlignCenter },
   { value: "right", label: "По правому краю", icon: AlignRight }
 ] as const;
+const fontFamilyOptions = ["Aptos", "Arial", "Courier New", "Times New Roman"];
 const fontSizeOptions = [10, 11, 12, 14, 16, 18, 20, 24];
 
 function normalizedLinkInput(value: string | null) {
@@ -111,12 +112,14 @@ function normalizedCellFormat(format: CellFormat): CellFormat | undefined {
   const horizontalAlign = normalizedHorizontalAlign(format.horizontalAlign);
   const numberFormat = format.numberFormat?.trim();
   const fontSize = normalizedFontSize(format.fontSize);
+  const fontFamily = normalizedFontFamily(format.fontFamily);
   const normalized: CellFormat = {
     ...(format.bold ? { bold: true } : {}),
     ...(format.italics ? { italics: true } : {}),
     ...(format.underline ? { underline: true } : {}),
     ...(format.strike ? { strike: true } : {}),
     ...(fontSize ? { fontSize } : {}),
+    ...(fontFamily ? { fontFamily } : {}),
     ...(textColor ? { textColor } : {}),
     ...(fillColor ? { fillColor } : {}),
     ...(horizontalAlign ? { horizontalAlign } : {}),
@@ -133,6 +136,7 @@ function cellInputStyle(format?: CellFormat): CSSProperties {
     ...(format?.italics ? { fontStyle: "italic" } : {}),
     ...(textDecoration ? { textDecoration } : {}),
     ...(format?.fontSize ? { fontSize: `${format.fontSize}pt` } : {}),
+    ...(format?.fontFamily ? { fontFamily: format.fontFamily } : {}),
     ...(format?.textColor ? { color: `#${format.textColor}` } : {}),
     ...(format?.fillColor ? { backgroundColor: `#${format.fillColor}` } : {}),
     ...(format?.horizontalAlign ? { textAlign: format.horizontalAlign } : {})
@@ -152,6 +156,11 @@ function normalizedFontSize(value?: number) {
   return normalized === 11 ? undefined : normalized;
 }
 
+function normalizedFontFamily(value?: string) {
+  const normalized = value?.trim().replace(/["<>]/g, "").slice(0, 80) ?? "";
+  return normalized && normalized.toLowerCase() !== "calibri" ? normalized : "";
+}
+
 function normalizedChartRange(value: string) {
   const raw = value.trim().replace(/\$/g, "").toUpperCase();
   const [start, end = start] = raw.split(":");
@@ -497,8 +506,8 @@ export function QExcell({ workbook, onChange }: QExcellProps) {
               className={`icon-button format-toggle ${selectedCellFormat.strike ? "is-active" : ""}`.trim()}
               type="button"
               onClick={() => toggleSelectedFormat("strike")}
-              title="Зачеркнуть"
-              aria-label="Зачеркнуть"
+              title="Зачеркнуть"
+              aria-label="Зачеркнуть"
             >
               <Strikethrough size={16} />
             </button>
@@ -518,6 +527,19 @@ export function QExcell({ workbook, onChange }: QExcellProps) {
                 </button>
               );
             })}
+            <select
+              value={selectedCellFormat.fontFamily ?? ""}
+              onChange={(event) => updateCellFormat(selectedCell, { fontFamily: event.target.value || undefined })}
+              aria-label="Семейство шрифта"
+              title="Семейство шрифта"
+            >
+              <option value="">Calibri</option>
+              {fontFamilyOptions.map((fontFamily) => (
+                <option key={fontFamily} value={fontFamily}>
+                  {fontFamily}
+                </option>
+              ))}
+            </select>
             <select
               value={selectedCellFormat.fontSize ?? ""}
               onChange={(event) =>