fix: enable send empty data to google sheet

src/detect_section_selector_masters/sendDiffToGoogleSheets.ts

@@ -36,26 +36,27 @@ async function uploadAllToSheets() {
 
     const raw = readFileSync(join(dir, file), 'utf-8');
     const data = JSON.parse(raw);
-    if (!data.length) continue;
-    const headers = Object.keys(data[0]);
-    const rows = data.map((row: any) =>
-      headers.map((h: string) => {
-        const cell = row[h];
-        return cell != null && typeof cell === 'object'
-          ? JSON.stringify(cell)
-          : cell;
-      })
-    );
-
-    // Clear existing values
+    // Always clear existing values, even for empty data, to overwrite the sheet
     await sheets.spreadsheets.values.clear({ spreadsheetId, range: `'${sheetName}'` });
-    // Write headers and data
-    await sheets.spreadsheets.values.append({
-      spreadsheetId,
-      range: `'${sheetName}'!A1`,
-      valueInputOption: 'RAW',
-      requestBody: { values: [headers, ...rows] }
-    });
+    if (data.length) {
+      const headers = Object.keys(data[0]);
+      const rows = data.map((row: any) =>
+        headers.map((h: string) => {
+          const cell = row[h];
+          return cell != null && typeof cell === 'object'
+            ? JSON.stringify(cell)
+            : cell;
+        })
+      );
+
+      // Write headers and data
+      await sheets.spreadsheets.values.append({
+        spreadsheetId,
+        range: `'${sheetName}'!A1`,
+        valueInputOption: 'RAW',
+        requestBody: { values: [headers, ...rows] }
+      });
+    }
 
     console.log(`✅ Uploaded ${file} to tab ${sheetName}`);
   }