GitHub Actions workflow failed to parse due to heredoc content on line 173 being interpreted as YAML structure by the parser.

Changes

• Replaced heredoc with echo command in timestamp update step
  • Heredoc cat <<EOF → single-line echo '...' > file
  • Eliminates parser ambiguity while maintaining identical JSON output

Technical Detail

YAML parsers attempt to interpret heredoc content between <<EOF and EOF when it resembles YAML structure (key-value pairs, indentation). The JSON object creation triggered this:

# Before: Parser confused by JSON structure
cat > news/metadata/last-generation.json <<EOF
{"timestamp": "${{ steps.check-updates.outputs.current_time }}", "generated": ${{ steps.generate.outputs.generated || 0 }}, "errors": ${{ steps.generate.outputs.errors || 0 }}}
EOF

# After: Single-line echo, no parser ambiguity
echo '{"timestamp": "${{ steps.check-updates.outputs.current_time }}", "generated": ${{ steps.generate.outputs.generated || 0 }}, "errors": ${{ steps.generate.outputs.errors || 0 }}}' > news/metadata/last-generation.json

Validated with yamllint -d relaxed - no syntax errors remain.

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