Update nightwatch75/todo to 0.0.9 — drag-and-drop reorder (plugin API 5) (#91)

Manual-mode reordering now uses declarative drag-and-drop (ui.dragSource
/ ui.dropZone, plugin_api 5) instead of the two-click grip; also folds in
the 0.0.8 crash-loop fix (strike() gated on utf8.len) and an onExit
autosave flush. Translation keys nested for the validator.

Co-authored-by: nightwatch75 <nightwatch75@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

todo/translations/en.json

@@ -27,8 +27,7 @@
   "tip_delete": "Delete task",
   "tip_done": "Mark as done",
   "tip_edit": "Edit",
-  "tip_grip": "Reorder — click to pick this row up",
-  "tip_grip_drop": "Click another grip to drop here, or this one to cancel",
+  "tip_grip": "Drag to reorder",
   "tip_sort": "Switch ordering mode",
   "tip_undone": "Mark as to do",
   "title": "To Do",