v2.6.0

What's changed

Added

• Heading hierarchy validation — new validate_headings.py script checks RST files for TYPO3 heading convention violations:
  • First section heading not using = (h2)
  • Non-standard underline characters (e.g. ^)
  • Skipped heading levels (e.g. h2 directly to h4 without h3)
• CHANGELOG.md — comprehensive changelog covering all releases from v1.0.0

Fixed

• set -e crash in validate_docs.sh — ((WARNINGS++)) with set -e exits the script when the counter is 0 because bash treats ((0)) as falsy. Replaced all ((VAR++)) with safe VAR=$((VAR + 1)) arithmetic.
• Command injection in heading check — shell variable was interpolated directly into python3 -c; extracted to separate Python script with sys.argv[1] for secure filename passing.

Motivated by TYPO3-Documentation/TYPO3CMS-Guide-HowToDocument#510 where extracted pages retained old heading levels.

Full Changelog: v2.5.4...v2.6.0