- QR is mint-green (still high-contrast for reliable scanning).
- The wall shows the owner's achievement badge next to their avatar.
- Positions 2 & 3 fill with upline line-banners, then ADMIN ADS when there's no
upline (configurable via data/admin-wall-ads.json; sensible default) so the
wall is never sparse.
- "Join free through this wall" is disabled until the visitor has viewed every
ad on the wall, with a "X/Y viewed" prompt.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
martbost
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