Developer notes

Hooks

Hook	Use
`update_product_post`, `update_category_post`, `update_page_post`	Queue the storefront URL of the saved object.
`tools_change_status`	Status switched in a list: the URL is queued (also when the object is no longer public).
`delete_product_pre`, `delete_category_pre`	Queue the URL before the object is deleted.
`update_promotion_post`, `clear_cache_post`	Move the site change time, the lowest Last-Modified of every page.

Frontend post controllers products.post.php and categories.post.php (mode view) add Last-Modified and answer 304.

?:kv_ixn_queue: URL (unique by MD5), host, object type and id, time added, tries.
?:kv_ixn_log: one row per request: host, endpoint, number of URLs, HTTP code, result (S sent, R retry, E error), message, first five URLs. The newest 500 rows are kept.

One POST per host to https://<endpoint>/indexnow with Content-Type: application/json:

{"host": "example.com", "key": "<32 hex>", "keyLocation": "https://example.com/<key>.txt", "urlList": ["https://example.com/..."]}

Up to 10 000 URLs per request.

Dispatch	Purpose
`kv_indexing_booster.manage`	Admin page.
`kv_indexing_booster.send`, `.queue_all`, `.submit`, `.new_key`, `.clear_queue`	Admin POST actions.
`kv_indexing_booster.cron`	Console, or HTTP with `cron_password`. Listed in `schemas/permissions/trusted_controllers.post.php`.
`index.php?dispatch=kv_indexing_booster.key`	The key as text, used as key location when the root is not writable.

Without an active license nothing is queued or sent and no header is added.