feat: skip empty JSON

src/detect_section_selector_masters/sendDiffToGoogleSheets.ts

@@ -71,6 +71,13 @@ async function uploadAllToSheets() {
   }
 
   for (const { subdir, file, path } of files) {
+    // Read and skip empty JSON
+    const fileRaw = readFileSync(path, 'utf-8');
+    const fileData = JSON.parse(fileRaw);
+    if (Array.isArray(fileData) && fileData.length === 0) {
+      console.log(`🚫 Skipping empty file ${file}`);
+      continue;
+    }
     // Use file name (without extension) as sheetName
     const sheetName = file.replace(/\.json$/, '');
     if (!existing.includes(sheetName)) {
@@ -81,15 +88,14 @@ async function uploadAllToSheets() {
           requests: [{ addSheet: { properties: { title: sheetName } } }]
         }
       });
+      existing.push(sheetName);
     }
 
-    const raw = readFileSync(path, 'utf-8');
-    const data = JSON.parse(raw);
     // Always clear existing values, even for empty data, to overwrite the sheet
     await sheets.spreadsheets.values.clear({ spreadsheetId, range: `'${sheetName}'` });
-    if (data.length) {
-      const headers = Object.keys(data[0]);
-      const rows = data.map((row: any) =>
+    if (fileData.length) {
+      const headers = Object.keys(fileData[0]);
+      const rows = fileData.map((row: any) =>
         headers.map((h: string) => {
           const cell = row[h];
           return cell != null && typeof cell === 'object'