One line (no standalone resale; recognisable people / trademark limits) with a
link to the Pixabay licence summary, shown with the "Images by Pixabay" credit
in every Stock tab state. Craft unit test added.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0185ukXgk6UunFCKyXqLe2Cq