feat(dock): stacked edge rendering and drag-to-reorder preview

src/app/mod.rs

@@ -340,19 +340,6 @@ pub(super) struct OpenCADStudio {
     /// Widest natural single-row width of the Start-page action buttons,
     /// measured by `WrapFlow` so side lists collapse before those buttons wrap.
     start_action_w: std::sync::Arc<std::sync::atomic::AtomicU32>,
-    /// When the window is too narrow the properties panel collapses to a
-    /// vertical bar; this is the user's toggle to expand it back out.
-    props_expanded: bool,
-    /// Persisted dock width and side of the Properties panel.
-    properties_width: f32,
-    properties_side: config::DockSide,
-    properties_auto_collapse: bool,
-    /// Transient hover/drag state for the docked Properties panel.
-    properties_hovered: bool,
-    properties_dragging: bool,
-    properties_resizing: bool,
-    properties_drag_last: Option<Point>,
-    properties_dock_preview: Option<config::DockSide>,
     /// Read-only editor buffer backing the command-line history dropdown, so
     /// the log can be drag-selected across lines and copied (issue #232).
     /// Rebuilt from the history each time the dropdown is opened.
@@ -1771,23 +1758,6 @@ pub enum Message {
     OpenUrl(String),
     /// Select which section a narrow (tabbed) Start page shows.
     StartSectionSelect(StartSection),
-    /// Expand/collapse the properties panel when it has shrunk to a bar.
-    TogglePropertiesBar,
-    /// Close the docked Properties panel; the ribbon command can reopen it.
-    PropertiesClose,
-    /// Pin/unpin the docked Properties panel.
-    PropertiesAutoCollapseToggle,
-    /// Hover state drives expansion while auto-collapse is enabled.
-    PropertiesHover(bool),
-    /// Begin dragging the Properties title bar to the opposite dock edge.
-    PropertiesDockGrab,
-    /// Begin dragging the Properties/viewport divider.
-    PropertiesResizeGrab,
-    /// Reset the dock width to its default value.
-    PropertiesWidthReset,
-    /// Full-workspace pointer tracking shared by dock and resize drags.
-    PropertiesDragMove(Point),
-    PropertiesDragRelease,
     /// Scroll the status-bar layout-tab strip horizontally by `delta` px
     /// (negative = left). Driven by the ‹ › arrows next to the tabs.
     ScrollLayoutTabs(f32),
@@ -3072,15 +3042,6 @@ impl OpenCADStudio {
             props_asym_scale: std::collections::HashSet::new(),
             start_section: StartSection::default(),
             start_action_w: std::sync::Arc::new(std::sync::atomic::AtomicU32::new(0)),
-            props_expanded: false,
-            properties_width: 250.0,
-            properties_side: config::DockSide::Left,
-            properties_auto_collapse: false,
-            properties_hovered: false,
-            properties_dragging: false,
-            properties_resizing: false,
-            properties_drag_last: None,
-            properties_dock_preview: None,
             history_content: iced::widget::text_editor::Content::new(),
             command_history_resizing: false,
             command_history_drag_last: None,