fix(emacs): add KILL state to org-caldav-todo-percent-states

org-caldav needs percent mappings for all todo states. Added mappings
for TODO, IN-PROGRESS, WAIT, DONE, and KILL to prevent sync errors.

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

home/roles/emacs/doom/config.el

@@ -162,6 +162,15 @@
   (setq org-icalendar-include-todo 'all)
   (setq org-caldav-sync-todo t)
 
+  ;; Map org-todo-keywords to VTODO percent-complete values
+  ;; Must include all states from org-todo-keywords
+  (setq org-caldav-todo-percent-states
+        '(("TODO" . 0)
+          ("IN-PROGRESS" . 50)
+          ("WAIT" . 50)
+          ("DONE" . 100)
+          ("KILL" . 100)))
+
   ;; Allow export with broken links (mu4e links can't be resolved during export)
   (setq org-export-with-broken-links 'mark)