Share widget links with embedded encoded URLs

This page reproduces social share widgets (AddToAny, Facebook-style sharers) whose hrefs carry a percent-encoded URL of another page on this site inside their query string or fragment. The Vancouver daily weather report page stands in for the share service endpoint, so the share anchors stay on this site and are crawlable. The embedded URL is data passed to the share endpoint, not a link on this site.

A crawler should record each share anchor as the weather report URL it points at. If any /about/?campaign_id=share-* URL appears in the crawl, the crawler decoded a URL embedded inside another URL and will generate duplicates of the About page under tracking query strings.

Expected discovered URLs from this page: /weather/vancouver-daily-report (the two fragment variants) and /weather/vancouver-daily-report/?u=... (the query variant) — never /about/?campaign_id=share-*.