Facebook search harvesting via claude-in-chrome: what actually works

Global post search, facebook.com/search/posts?q=<query>&filters=<base64 recent_posts filter>, spans all public groups and proved more productive than scraping a single group. The group feed's ?sorting_setting=CHRONOLOGICAL view rendered no post content in a small window. get_page_text is noisy, with long runs of the word "Facebook" from obfuscated markup, and post permalinks are not available until hover. So harvest post text first, filter it, then look up permalinks only for candidates. A notifications dialog left open also got in the way of feed extraction, so dismiss it and reload.