Add org-reschedule-past-to-today as exposed function

- Rename imalison:reschedule-past-to-today to org-reschedule-past-to-today
- Keep old name as alias for backwards compatibility
- Register function in org-agenda-api-exposed-functions for API access

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

org-agenda-api/configs/colonelpanic/custom-config.el

@@ -249,4 +249,8 @@ Returns nil for non-entry templates or templates that can't be converted."
 ;; The org-agenda-api-window-habit.el module is now included in the container,
 ;; providing /habit-config and /habit-status endpoints for window-habit integration.
 
+;; Register exposed functions for remote execution via /call-function endpoint
+(setq org-agenda-api-exposed-functions
+      '((org-reschedule-past-to-today :name "Reschedule Overdue to Today")))
+
 ;;; custom-config.el ends here