Motivation

• Prevent cascading deletions when confirming a slot removal in the dashboard editor UI loop.
• Ensure the pending confirmation is cleared after a confirmed removal so the same index is not reused.
• Advance the loop index after removing a slot to avoid reading a stale idx into the shortened slots vector.
• Limit removals to one slot per UI frame to avoid accidental multi-deletes.

Description

• Added a local removed_once guard and changed the removal condition to let removed = !removed_once && confirm_remove == Some(idx);.
• After removing a slot via self.config.slots.remove(idx), set removed_once = true and clear both self.confirm_remove_slot and the local confirm_remove.
• Increment idx in the removal branch so the while-loop progresses safely and does not reuse a stale index.
• Changes applied in src/gui/dashboard_editor_dialog.rs.

Testing

• No automated tests were run for this change.

Codex Task