Calendar & Timeline — When a view looks empty

Each view tells you what it's missing and offers the fix: • Calendar on a table with no date field shows Add a date field, which takes you to the table's field editor. • Timeline in the same situation shows Edit fields — one date field gets you bars with inferred ends, a second gets you real spans. If you have no tables at all yet, both views point you to Create a workspace instead. Calendar and Timeline also fall back to that message when you open them fresh and none of your tables has a date field yet. Each of these asks the table for one specific thing. Knowing which is usually the whole answer to “why is my view empty?”.