* Update issue-management.yml
* feat: enhance issue management with new templates and automated stale issue handling
* fix: update issue templates for clarity and consistency in descriptions
* fix: improve clarity in issue templates and add area labels for better categorization
* fix: reorder question template title for improved clarity and update issue-checker to remove redundant label handling
* fix: add skip and remove labels for kind/bug, kind/enhancement, and kind/question in issue-checker
* fix: remove redundant handling for needs-more-info labels in issue-checker
- Introduced a new English version of the contributor guide (CONTRIBUTING_EN.md) to enhance accessibility for non-Chinese speakers.
- Updated issue templates to use more specific labels (kind/bug, kind/enhancement, kind/question) for better categorization.
- Added a testing section in the developer guide to clarify testing procedures.
