Google Apps Script Code:

function doPost(e) {
  try {
    const sheet = SpreadsheetApp.openById('1qsgaTWjhXbO9w2CZLEyUip5dkc8jWCtIGealUMkLVBM');
    const ws = sheet.getActiveSheet();
    
    const data = JSON.parse(e.postData.contents);
    
    ws.appendRow([
      data.timestamp,
      data.techName,
      data.location,
      data.brand,
      data.productType,
      data.colorName,
      data.sku,
      data.size,
      data.notes,
      'No'
    ]);
    
    return ContentService.createTextOutput('Success');
  } catch (error) {
    return ContentService.createTextOutput('Error: ' + error.toString());
  }
}

function doGet(e) {
  return ContentService.createTextOutput('PNL Tracker is working!');
}

Instructions:

1. Go to script.google.com
2. Create "New Project"
3. Replace the code with the code above
4. Save the project
5. Deploy → New Deployment → Web app → Execute as "Me" → Access "Anyone" → Deploy
6. Copy the web app URL and paste it above