v0.81.2

[0.81.2] - 2026-05-19

Fixed

• --export-pdf-page produced a solid dark-gray image because Chromium
  (which agent-browser drives) ships without the closed-source PDF
  viewer plugin and rendered the page as an empty body. Renderer
  swapped to pdftoppm from poppler-utils. Same install-hint pattern
  as agent-browser; CLI surface (--export-pdf-page, --pdf-viewport,
  --pdf-scale, --pdf-quality, --pdf-format) and script binding
  (pdf_export_page) unchanged. Aspect ratio is now preserved
  (previously stretched to fit the viewport); the viewport × scale
  rectangle is treated as an upper-bound box.
• recon --examples (and --flags, --help) now scroll with the
  mouse wheel: when the local less is version 530+ (introduced
  --mouse), the flag is appended to the default pager argv. Older
  less still works without --mouse.

Changed

• Out-of-range page numbers (e.g. --export-pdf-page 999 small.pdf)
  produce a clean page N out of range: PDF has M page(s) message
  rather than poppler's raw "Wrong page range given" stderr.
• Integration tests now assert rendered images aren't flat-color (the
  exact failure mode 0.81.0 / 0.81.1 silently shipped) and run ~9×
  faster without the agent-browser daemon's serialisation lock.