**Feature summary**
I added support to QuickCategories’ `/batch/new/pagepile` page to accept `actions` and `title` parameters via URL (GET request), in addition to the existing `page_pile_id` parameter. This allows external tools like Cat-a-lot to open QuickCategories with all necessary batch parameters prefilled via URL, simplifying batch creation.
**Use case(s)**
While working on the Cat-a-lot tool, I discovered that although `page_pile_id` could be passed to QuickCategories via URL, the `actions` (which specify category edits) and `title` (edit summary) parameters could not. This meant users or scripts had to manually fill these fields, complicating automation. Attempts to use POST were blocked by CORS policies when invoked from Wikimedia Commons. Therefore, enabling GET parameter support for `actions` and `title` provides a practical solution.
**Benefits**
* Improves automation for tools like Cat-a-lot by allowing all batch parameters to be set via URL, enabling seamless workflows.
* Reduces manual input errors and speeds up batch submissions.
* Makes QuickCategories more flexible and extensible for other external integrations or scripts.