Discovered closing #57: the current chunker still emits 4 tiny chunks that
are standalone section headings ('דיון', 'טענות המשיבים', ...). Low priority
— filtered at query time, search unaffected. Proposed fix: anchor a short
isolated heading forward into the following section.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
