Fix verse sitemap generation - suppress WeasyPrint warnings

The sitemap-verses.xml file was contaminated with WeasyPrint import
warnings, causing "Document is empty" errors in Google Search Console.

Fixes:
- Suppress stdout/stderr during imports to prevent warnings in output
- Add error handling to sitemap-verses endpoint
- Regenerate clean sitemap-verses.xml (6.3MB, 31,102 verses)

The file now starts with proper XML declaration instead of error messages.

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

Co-Authored-By: Claude <noreply@anthropic.com>

scripts/generate_verse_sitemap.py

@@ -26,13 +26,26 @@ Usage:
     git commit -m "Update verse sitemap"
 """
 import sys
+import os
 from pathlib import Path
 
+# Suppress WeasyPrint warnings during import
+# Redirect stdout temporarily to suppress import warnings
+from io import StringIO
+old_stdout = sys.stdout
+old_stderr = sys.stderr
+sys.stdout = StringIO()
+sys.stderr = StringIO()
+
 # Add parent directory to path to import kjv module
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
 from kjvstudy_org.kjv import bible
 
+# Restore stdout/stderr
+sys.stdout = old_stdout
+sys.stderr = old_stderr
+
 
 def generate_verse_sitemap():
     """Generate sitemap XML for all verses in the Bible."""