New ImageAttachButton drops onto any composer textarea: file picker
upload → /api/upload/image (the universal pipeline) → markdown
 appended to the body. New thread + reply composers
both gain the button with a 'Auto-optimized, never > 20 MB' caption.
RichBody is the read-path companion: parses body markdown for image
syntax and renders each as a <picture> element with the AVIF source
first (derived from the .webp sibling on our bb-media bucket), then the
WebP, then the original-format fallback img. Prose around images still
runs through LinkifyPlainText so company auto-links still work.
Forum users now have a way to include screenshots, gear photos, NAB
booth shots, etc. in their posts — every image flows through the same
optimization that gives <10% of original byte weight at visually
identical quality.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
39e9777e0a