A captioned image/video (MSC2530: `filename` set and `body` differs) put the
caption in the header, truncated to one line, so a long caption was
unreadable. The header now shows the file name; the caption is shown in full
under the media (wrapped, scrolls past 25vh). The image alt text uses the
caption, and Download now saves under the real file name instead of the
caption.
Verified in Chromium: header "lake-sunset.png", the 150-character caption
fully visible below the image.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
Lotus CIandClaude Opus 5.5
c088b4c0e6