Fix: exclude signature section labels from PDF checklist

The PDF was including 'Sign below' and 'Date' labels from the
signature section. Changed selectors to only query labels within
.checklist-item elements, not the entire .interactive-checklist.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: jeremymanning

checklist.js

@@ -581,9 +581,9 @@ function createPDF(dateValue) {
   doc.text(introText, leftMargin, yPos);
   yPos += 10;
 
-  // Checklist items with checkbox symbols
-  var checkboxes = document.querySelectorAll('.interactive-checklist input[type="checkbox"]');
-  var labels = document.querySelectorAll('.interactive-checklist label');
+  // Checklist items with checkbox symbols (only from .checklist-item, not signature section)
+  var checkboxes = document.querySelectorAll('.interactive-checklist .checklist-item input[type="checkbox"]');
+  var labels = document.querySelectorAll('.interactive-checklist .checklist-item label');
 
   doc.setFontSize(10);
   labels.forEach(function(label, index) {