Unblocked Context Get Urls

Direct URL content resolution via contextgeturls. Use this to fetch full content from one or more URLs the agent already has in hand — PRs, issues, docs, Slack messages, or arbitrary web pages that were surfaced by a prior search or provided by the user. TRIGGER when: you already have concrete URLs from a previous contextresearch / contextsearch result and want the full body, not just the title and URL; the user pasted one or more links and wants them summarized or analyzed; you need to resolve a Jira/Linear/PR/Slack link directly. DO NOT TRIGGER when: you need to search for content (use contextresearch or the contextsearch family); the URL is local (localhost, file://, private network) — those aren't reachable.