Subtasks and checklists inside content cards

Feature request: I’d like to create tasks or checklist items inside a content card and mark each one complete independently. For example, Id batch 18 Threads posts inside one card. Those posts are worked on and published across different days. I need to track each post without marking the entire batch complete or creating 18 separate cards. Ideally, this would include: - Expandable subtasks with individual status, due date and assignee. - A checklist for simpler production tasks. - A progress count on the parent card, such as 6 of 18 complete. - Separate completion, scheduling and publishing states, so checking a task off does not mean it was published. - Optional links from subtasks to individual publishing records. This would make it easier to manage content batches and multi-step production while keeping the planner clean.