feat(plotstyle): improve CTB editor workflow

src/app/view/mod.rs

@@ -1829,6 +1829,30 @@ impl OpenCADStudio {
             open_progress_layer,
         ];
 
+        // If the Plot Style editor was launched from PLOT, keep the Plot dialog
+        // rendered underneath as its blocked parent.
+        let modal_underlay: Element<'_, Message> =
+            if self.active_modal == Some(super::ModalKind::Plotstyle) {
+                if let Some((plot_offset, plot_resize)) =
+                    self.plotstyle_parent_plot_geometry.as_ref()
+                {
+                    let plot_content = self.plot_modal_content(*plot_resize);
+
+                    crate::ui::modal::modal(
+                        composed,
+                        crate::tr!("modal", "plot"),
+                        plot_content,
+                        Message::CloseModal,
+                        *plot_offset,
+                        crate::ui::modal::ModalOptions::STANDARD,
+                    )
+                } else {
+                    composed.into()
+                }
+            } else {
+                composed.into()
+            };
+
         // ── In-canvas modal dialogs (Plan B) ───────────────────────────────
         // Former pop-up windows render as overlays here, so they work on both
         // the native (single main window) and web builds.
@@ -1842,7 +1866,7 @@ impl OpenCADStudio {
                     crate::ui::modal::ModalOptions::STANDARD
                 };
                 crate::ui::modal::modal(
-                    composed,
+                    modal_underlay,
                     self.modal_title(),
                     content,
                     Message::CloseModal,
@@ -1850,7 +1874,7 @@ impl OpenCADStudio {
                     modal_options,
                 )
             }
-            None => composed.into(),
+            None => modal_underlay,
         };
         // Shared CAD colour picker. Indexed ACI colours use OpenCADStudio's own
         // dialog; True Color keeps the existing iced_aw gradient picker.

src/app/view/modal.rs

@@ -50,7 +50,23 @@ impl OpenCADStudio {
             None => String::new(),
         }
     }
-
+    pub(super) fn plot_modal_content<'s>(
+        &'s self,
+        extra: iced::Vector,
+    ) -> Element<'s, Message> {
+        sized_flow(
+            extra,
+            760,
+            540,
+            |flow| {
+                crate::ui::window::plot::view_window(
+                    &self.plot_dialog,
+                    self.print_all_options,
+                    flow,
+                )
+            },
+        )
+    }
     /// Build the currently-open modal dialog's content (Plan B), or `None`.
     /// Iced 0.15 measures the content first, so dialogs start at their natural
     /// size and overflowing regions become scrollable where a cap is supplied.
@@ -280,20 +296,7 @@ impl OpenCADStudio {
                     })
                 }
             }
-            super::super::ModalKind::Plot => {
-                sized_flow(
-                    ex,
-                    760,
-                    540,
-                    |flow| {
-                        crate::ui::window::plot::view_window(
-                            &self.plot_dialog,
-                            self.print_all_options,
-                            flow,
-                        )
-                    },
-                )
-            }
+            super::super::ModalKind::Plot => self.plot_modal_content(ex),
             super::super::ModalKind::PrintAll => sized_flow(
                 ex,
                 520,