Reach for this skill when the user asks for: "content decay", "old content losing traffic", "refresh declining posts", "content audit for decay", "find pages losing rankings", "what posts to update", "evergreen content maintenance". This is the depth specialist — uses Suganthan GSC `content_decay` for 90-day trend detection, cross-references with Ahrefs `organic_keywords_changes` for ranking drops, prioritizes refresh by traffic-loss × ease-of-fix. Refresh playbook + post-refresh reindex via Indexing API.
