Merge origin/main (25881a8e) into w/objects

ROADMAP.md, docs/chart-parity.md, docs/gaps.md, docs/target-app-parity.md, docs/ui-parity.md: the header change notes combine this branch's note with main's, dated today; main's revision and progress rows stay and this branch's rows are re-dated on top. Code merged without conflict.

crates/engine/src/cmd/extra/chart.rs

@@ -43,6 +43,7 @@ pub(super) fn add_element(s: &mut Session, p: &Json) -> Result<Json> {
                 }
             }
             "dataLabels" => c.data_labels = on,
+            "dataTable" => crate::cmd::insert::update_data_table(c, p, Some(on))?,
             "gridlines" => c.gridlines = on,
             "axisTitles" => {
                 c.x_title = on.then(|| c.x_title.clone().unwrap_or_else(|| "Axis Title".into()));