Record verified Arrange reset workflow and evidence

crates/oa-core/examples/arrange_reset_native_probe.rs

@@ -0,0 +1,283 @@
+//! Native UI wiring fixture/oracle. Expected output comes from candidate Layout,
+//! not from an independent geometry algorithm. Run only after parent source freeze.
+use oa_core::*;
+use serde_json::{Value, json};
+use std::{collections::BTreeMap, error::Error, fs, path::PathBuf};
+
+fn id(n: u128) -> Id {
+    Id::from_u128(700_000 + n)
+}
+fn at(x: f32, y: f32) -> Position {
+    Position { x, y }
+}
+
+fn function(p: &mut Project, n: u128, name: &str, parent: Option<Id>) -> Id {
+    let old = p
+        .add_element(Kind::Function, Layer::Sa, name, parent)
+        .unwrap();
+    reidentify(p, old, id(n)).unwrap();
+    id(n)
+}
+
+fn place(p: &mut Project, d: Id, n: u128, element: Id, position: Position, size: Size) {
+    let old = p.place(d, element, position);
+    reidentify(p, old, id(n)).unwrap();
+    let node = p
+        .diagrams
+        .get_mut(&d)
+        .unwrap()
+        .nodes
+        .get_mut(&id(n))
+        .unwrap();
+    node.alias = format!("placement_{n}");
+    node.size = size;
+}
+
+fn exchange(p: &mut Project, n: u128, name: &str, source: Id, target: Id) -> Id {
+    let request = FunctionalExchangeRequest {
+        id: id(n),
+        alias: format!("exchange_{n}"),
+        name: name.into(),
+        description: String::new(),
+        source,
+        target,
+        source_port: PortChoice::Create,
+        target_port: PortChoice::Create,
+        items: vec![],
+    };
+    let commands = ports::plan_functional_exchange(p, &request).unwrap();
+    *p = execute_batch(p, &commands).unwrap();
+    id(n)
+}
+
+fn route(edge: Id, waypoints: Vec<Position>, fraction: f32, offset: Position) -> EdgeRoute {
+    EdgeRoute {
+        edge,
+        source_attachment: None,
+        target_attachment: None,
+        waypoints,
+        label: Some(EdgeLabel { fraction, offset }),
+    }
+}
+
+fn original() -> (Project, Id, Id, Value) {
+    let mut p = Project::empty();
+    p.id = id(0);
+    p.alias = "arrange_native_fixture".into();
+    p.name = "Arrange route reset trial".into();
+    let old = p.ensure_diagram(Layer::Sa);
+    let main = id(1);
+    reidentify(&mut p, old, main).unwrap();
+    {
+        let d = p.diagrams.get_mut(&main).unwrap();
+        d.alias = "main_dispatch".into();
+        d.name = "Main dispatch".into();
+        d.projection = ProjectionKind::FunctionalDataflow;
+    }
+    let group = function(&mut p, 10, "Prepare report", None);
+    let send = function(&mut p, 11, "Send report", Some(group));
+    let check = function(&mut p, 12, "Check report", Some(group));
+    let monitor = function(&mut p, 13, "Monitor report", None);
+    let archive = function(&mut p, 14, "Archive report", None);
+    let card = Size {
+        width: 224.,
+        height: 94.,
+    };
+    place(
+        &mut p,
+        main,
+        20,
+        group,
+        at(40., 80.),
+        Size {
+            width: 400.,
+            height: 420.,
+        },
+    );
+    for (n, element, x, y) in [
+        (21, send, 80., 160.),
+        (22, check, 80., 330.),
+        (23, monitor, 740., 80.),
+        (24, archive, 740., 380.),
+    ] {
+        place(&mut p, main, n, element, at(x, y), card);
+    }
+    let authored = exchange(&mut p, 100, "Verified report", send, monitor);
+    exchange(&mut p, 101, "Report for checking", send, check);
+    exchange(&mut p, 102, "Checked report archive", check, archive);
+    let hidden = exchange(
+        &mut p,
+        103,
+        "Filtered archive acknowledgement",
+        monitor,
+        archive,
+    );
+    let RelationBody::FunctionalExchange {
+        source_port,
+        target_port,
+        ..
+    } = p.relations[&authored].body
+    else {
+        unreachable!()
+    };
+    for (node, port, side, offset) in [
+        (id(21), source_port, PortAnchorSide::Right, 0.25),
+        (id(23), target_port, PortAnchorSide::Left, 0.75),
+    ] {
+        p = prepare_command(
+            &p,
+            &Command::SetPortAnchor {
+                diagram: main,
+                node,
+                anchor: PortAnchor { port, side, offset },
+            },
+        )
+        .unwrap()
+        .project;
+    }
+    let mut visible = route(
+        authored,
+        vec![at(610., 210.), at(610., 420.)],
+        0.5,
+        at(0., -32.),
+    );
+    // Real semantic ports remain authoritative; these stored preferences are dormant.
+    visible.source_attachment = Some(EdgeAttachment {
+        side: PortAnchorSide::Bottom,
+        offset: 0.5,
+    });
+    visible.target_attachment = Some(EdgeAttachment {
+        side: PortAnchorSide::Top,
+        offset: 0.25,
+    });
+    let filtered = route(hidden, vec![at(1020., 270.)], 0.75, at(16., -16.));
+    p.diagrams.get_mut(&main).unwrap().routes = vec![visible, filtered];
+    p.diagrams.get_mut(&main).unwrap().view_options.hidden_edges = vec![hidden];
+    let second = id(2);
+    p.diagrams.insert(
+        second,
+        Diagram {
+            id: second,
+            alias: "review_sentinel".into(),
+            name: "Review sentinel".into(),
+            description:
+                "Independent other-view route; Arrange Main dispatch must retain this entire view"
+                    .into(),
+            layer: Layer::Sa,
+            projection: ProjectionKind::FunctionalDataflow,
+            view_options: Default::default(),
+            nodes: BTreeMap::new(),
+            layout: None,
+            routes: vec![route(authored, vec![at(420., 40.)], 0.25, at(8., -8.))],
+        },
+    );
+    place(&mut p, second, 30, send, at(40., 120.), card);
+    place(&mut p, second, 31, monitor, at(660., 120.), card);
+    validate_candidate(&p).unwrap();
+    (
+        p,
+        main,
+        second,
+        json!({"authored_edge":authored,"authored_edge_name":"Verified report",
+        "filtered_edge":hidden,"container_placement":id(20),"source_port":source_port,"target_port":target_port,
+        "main_diagram":main,"second_diagram":second,"authored_pin_count":2,
+        "source_anchor":{"side":"Right","offset":0.25},"target_anchor":{"side":"Left","offset":0.75},
+        "dormant_source_attachment":{"side":"Bottom","offset":0.5},
+        "dormant_target_attachment":{"side":"Top","offset":0.25}}),
+    )
+}
+
+fn json_bytes(p: &Project) -> Vec<u8> {
+    let mut bytes = serde_json::to_vec_pretty(p).unwrap();
+    if !bytes.ends_with(b"\n") {
+        bytes.push(b'\n');
+    }
+    assert_eq!(persistence::decode(&bytes).unwrap(), *p);
+    bytes
+}
+
+fn source_bytes(p: &Project) -> Vec<u8> {
+    let source = language::format(p);
+    assert_eq!(language::parse(&source).unwrap(), *p);
+    let mut bytes = source.into_bytes();
+    if !bytes.ends_with(b"\n") {
+        bytes.push(b'\n');
+    }
+    bytes
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let mut args = std::env::args_os().skip(1);
+    let first = args
+        .next()
+        .ok_or("Usage: arrange_reset_native_probe NEW_DIRECTORY | --compare ACTUAL EXPECTED")?;
+    if first == "--compare" {
+        let actual_path = args.next().ok_or("Missing ACTUAL path")?;
+        let expected_path = args.next().ok_or("Missing EXPECTED path")?;
+        if args.next().is_some() {
+            return Err("Unexpected comparison argument".into());
+        }
+        let actual = persistence::decode(&fs::read(actual_path)?)?;
+        let expected = persistence::decode(&fs::read(expected_path)?)?;
+        let equal = actual == expected;
+        println!(
+            "{}",
+            json!({"complete_project_equal": equal,
+            "actual_diagrams": actual.diagrams.len(),
+            "expected_diagrams": expected.diagrams.len()})
+        );
+        if !equal {
+            return Err("Complete typed Projects differ".into());
+        }
+        return Ok(());
+    }
+    let output = PathBuf::from(first);
+    if args.next().is_some() || output.exists() {
+        return Err("Require exactly one output directory that does not already exist".into());
+    }
+    let (before, main, second, identities) = original();
+    let mut folded = before.clone();
+    folded
+        .diagrams
+        .get_mut(&main)
+        .unwrap()
+        .nodes
+        .get_mut(&id(20))
+        .unwrap()
+        .collapsed = true;
+    let mut files = Vec::new();
+    let mut cases = Vec::new();
+    for (name, project) in [("expanded", before), ("folded", folded)] {
+        validate_candidate(&project)?;
+        // Explicitly candidate-derived UI oracle: this is not an independent layout proof.
+        let expected = execute_batch(&project, &[Command::Layout(main)])?;
+        assert_eq!(project.elements, expected.elements);
+        assert_eq!(project.relations, expected.relations);
+        assert_eq!(project.diagrams[&second], expected.diagrams[&second]);
+        for (stage, p) in [("original", &project), ("expected-after", &expected)] {
+            files.push((format!("{name}-{stage}.json"), json_bytes(p)));
+            files.push((format!("{name}-{stage}.arcadia"), source_bytes(p)));
+        }
+        cases.push(json!({"name":name,"diagram":main,
+            "original_json":format!("{name}-original.json"),
+            "expected_json":format!("{name}-expected-after.json"),
+            "original_source":format!("{name}-original.arcadia"),
+            "expected_source":format!("{name}-expected-after.arcadia"),
+            "original_routes":project.diagrams[&main].routes,"expected_routes":expected.diagrams[&main].routes,
+            "expected_origin":"Candidate Command::Layout; UI-wiring oracle only"}));
+    }
+    let manifest = json!({"schema":1,"cases":cases,"identities":identities,
+        "definition":"Source-authored five-Function/two-view fixture; original geometry never generated by Layout.",
+        "comparison":"Decode saved JSON with production persistence and compare complete Project to immutable original/expected file. Prefer direct serializer bytes for byte checks; do not reserialize Project through generic JSON Value as a float oracle.",
+        "performed":"Generation and core checks only when this program is actually run; no native UI results recorded here."});
+    files.push((
+        "manifest.json".into(),
+        serde_json::to_vec_pretty(&manifest)?,
+    ));
+    fs::create_dir(&output)?;
+    for (name, bytes) in files {
+        fs::write(output.join(name), bytes)?;
+    }
+    println!("{}", output.join("manifest.json").display());
+    Ok(())
+}

crates/oa-core/src/routing.rs

@@ -53,8 +53,6 @@ pub struct RoutedEdge {
 pub struct EdgeLabelGeometry {
     /// Empty for edge kinds without a permanently displayed label.
     pub text: String,
-    /// Dedicated State-canvas two-block presentation; raw summary stays in text.
-    pub state_layout: Option<StateLabelLayout>,
     /// Effective arc-length fraction, including an automatic collision-avoidance
     /// choice. Use this when the first label drag becomes authored metadata.
     pub fraction: f32,
@@ -63,108 +61,6 @@ pub struct EdgeLabelGeometry {
     pub bounds: RoutingBounds,
 }
 
-/// Derived hard-line layout for the dedicated State projection, never persisted.
-/// Excerpts are chosen on raw text before display-only separator/tab expansion.
-#[derive(Debug, Clone, PartialEq)]
-pub struct StateLabelLayout {
-    pub title_lines: Vec<String>,
-    pub summary_lines: Vec<String>,
-    size: Size,
-}
-
-impl StateLabelLayout {
-    pub const FONT_SIZE: f32 = 10.0;
-    pub const LINE_HEIGHT: f32 = 12.0;
-    pub const HORIZONTAL_PADDING: f32 = 5.0;
-    pub const MIN_HEIGHT: f32 = 24.0;
-
-    /// `summary` is the existing raw, globally shortened routing summary.
-    /// Measurement receives each final display line at FONT_SIZE, without breaks.
-    /// Invalid measurements fall back to the deterministic approximate width.
-    pub fn new(title: &str, summary: &str, measure: &dyn Fn(&str) -> f32) -> Self {
-        let budget = (7 * summary.chars().count() + 6) / 6;
-        let title = if title.chars().count() > budget {
-            title
-                .chars()
-                .take(budget.saturating_sub(1))
-                .chain(std::iter::once('…'))
-                .collect()
-        } else {
-            title.to_owned()
-        };
-        let title_lines = state_display_lines(&title);
-        let summary_lines = state_display_lines(summary);
-        let width = title_lines
-            .iter()
-            .chain(&summary_lines)
-            .map(|line| {
-                let width = measure(line);
-                if width.is_finite() && width >= 0.0 {
-                    width
-                } else {
-                    approximate_state_line_width(line)
-                }
-            })
-            .fold(0.0_f32, f32::max);
-        let size = Size {
-            width: width + 2.0 * Self::HORIZONTAL_PADDING,
-            height: (Self::LINE_HEIGHT * (title_lines.len() + summary_lines.len()) as f32)
-                .max(Self::MIN_HEIGHT),
-        };
-        Self {
-            title_lines,
-            summary_lines,
-            size,
-        }
-    }
-
-    pub fn size(&self) -> Size {
-        self.size
-    }
-
-    /// Local origin relative to EdgeLabelGeometry.bounds.position.
-    pub fn title_line_position(&self, index: usize) -> Position {
-        Position {
-            x: Self::HORIZONTAL_PADDING,
-            y: index as f32 * Self::LINE_HEIGHT,
-        }
-    }
-
-    /// Local origin relative to EdgeLabelGeometry.bounds.position.
-    pub fn summary_line_position(&self, index: usize) -> Position {
-        Position {
-            x: Self::HORIZONTAL_PADDING,
-            y: (self.title_lines.len() + index) as f32 * Self::LINE_HEIGHT,
-        }
-    }
-}
-
-fn state_display_lines(raw: &str) -> Vec<String> {
-    if raw.is_empty() {
-        return Vec::new();
-    }
-    let mut lines = vec![String::new()];
-    let mut chars = raw.chars().peekable();
-    while let Some(ch) = chars.next() {
-        match ch {
-            '\r' => {
-                if chars.peek() == Some(&'\n') {
-                    chars.next();
-                }
-                lines.push(String::new());
-            }
-            '\n' | '\u{85}' | '\u{2028}' | '\u{2029}' => lines.push(String::new()),
-            '\t' => lines.last_mut().unwrap().push_str("    "),
-            _ => lines.last_mut().unwrap().push(ch),
-        }
-    }
-    lines
-}
-
-fn approximate_state_line_width(line: &str) -> f32 {
-    line.chars().count() as f32 * 7.0
-}
-
 /// Derived labels and navigation markers for the two named association ends.
 /// Canvas and SVG consume these same coordinates; no extra diagram state exists.
 #[derive(Debug, Clone, PartialEq)]
@@ -265,7 +161,6 @@ pub fn association_end_geometry(
             source_end,
             label: EdgeLabelGeometry {
                 text,
-                state_layout: None,
                 fraction: if source_end { 0.0 } else { 1.0 },
                 anchor: tip,
                 center,
@@ -541,24 +436,7 @@ fn ancestors(id: Id, nodes: &BTreeMap<Id, &ProjectedNode>, out: &mut BTreeSet<Id
 /// Search caps are presentation limits, reported on the affected edge, never
 /// semantic errors or a reason to discard an authored point.
 pub fn route_diagram(project: &Project, diagram: &Diagram, view: &ProjectedView) -> RoutedView {
-    route_diagram_with_state_label_measurement(
-        project,
-        diagram,
-        view,
-        &approximate_state_line_width,
-    )
-}
-
-/// Route with frontend line measurements for dedicated State labels before collision placement.
-/// The legacy entrypoint uses a deterministic 7-units-per-scalar approximation,
-/// not a promise of shaped glyph containment. All other label kinds are unchanged.
-pub fn route_diagram_with_state_label_measurement(
-    project: &Project,
-    diagram: &Diagram,
-    view: &ProjectedView,
-    measure: &dyn Fn(&str) -> f32,
-) -> RoutedView {
-    route_diagram_impl(project, diagram, view, None, measure)
+    route_diagram_impl(project, diagram, view, None)
 }
 
 /// Transient route/label editing with unchanged projected nodes and ports.
@@ -573,26 +451,7 @@ pub fn route_edge_preview(
     baseline: &RoutedView,
     edge: Id,
 ) -> RoutedView {
-    route_edge_preview_with_state_label_measurement(
-        project,
-        diagram,
-        view,
-        baseline,
-        edge,
-        &approximate_state_line_width,
-    )
-}
-
-/// Preview counterpart using the same State text measurer as the settled scene.
-pub fn route_edge_preview_with_state_label_measurement(
-    project: &Project,
-    diagram: &Diagram,
-    view: &ProjectedView,
-    baseline: &RoutedView,
-    edge: Id,
-    measure: &dyn Fn(&str) -> f32,
-) -> RoutedView {
-    route_diagram_impl(project, diagram, view, Some((baseline, edge)), measure)
+    route_diagram_impl(project, diagram, view, Some((baseline, edge)))
 }
 
 fn route_diagram_impl(
@@ -600,7 +459,6 @@ fn route_diagram_impl(
     diagram: &Diagram,
     view: &ProjectedView,
     preview: Option<(&RoutedView, Id)>,
-    measure: &dyn Fn(&str) -> f32,
 ) -> RoutedView {
     let nodes: BTreeMap<_, _> = view.nodes.iter().map(|n| (n.id, n)).collect();
     let rectangles: Vec<_> = nodes.values().map(|n| Rect::node(n)).collect();
@@ -781,14 +639,13 @@ fn route_diagram_impl(
                 .flatten();
             routed.label = make_label(
                 project,
-                diagram,
+                diagram.view_options.exchange_labels,
                 edge.id,
                 &routed.points,
                 authored_label,
                 &obstacles,
                 &previous_labels,
                 &previous,
-                measure,
             );
         }
         if !routed.label.text.is_empty() {
@@ -1488,7 +1345,6 @@ fn label_text(project: &Project, edge: Id) -> String {
 fn empty_label() -> EdgeLabelGeometry {
     EdgeLabelGeometry {
         text: String::new(),
-        state_layout: None,
         fraction: 0.5,
         anchor: pos(0.0, 0.0),
         center: pos(0.0, 0.0),
@@ -1506,16 +1362,14 @@ fn empty_label() -> EdgeLabelGeometry {
 #[allow(clippy::too_many_arguments)]
 fn make_label(
     project: &Project,
-    diagram: &Diagram,
+    labels: crate::view_options::ExchangeLabels,
     edge: Id,
     points: &[Position],
     authored: Option<&crate::EdgeLabel>,
     obstacles: &[Rect],
     previous_labels: &[RoutingBounds],
     strokes: &[Segment],
-    measure: &dyn Fn(&str) -> f32,
 ) -> EdgeLabelGeometry {
-    let labels = diagram.view_options.exchange_labels;
     let text = if labels != crate::view_options::ExchangeLabels::Name
         && project
             .relations
@@ -1531,23 +1385,14 @@ fn make_label(
     } else {
         label_text(project, edge)
     };
-    let state_layout = (diagram.projection.state_machine().is_some()
-        && project
-            .relations
-            .get(&edge)
-            .is_some_and(|r| r.kind() == RelationKind::StateTransition))
-    .then(|| StateLabelLayout::new(project.named(edge), &text, measure));
-    let size = state_layout.as_ref().map_or_else(
-        || Size {
-            width: if text.is_empty() {
-                0.0
-            } else {
-                text.chars().count() as f32 * 7.0 + 16.0
-            },
-            height: if text.is_empty() { 0.0 } else { 24.0 },
+    let size = Size {
+        width: if text.is_empty() {
+            0.0
+        } else {
+            text.chars().count() as f32 * 7.0 + 16.0
         },
-        StateLabelLayout::size,
-    );
+        height: if text.is_empty() { 0.0 } else { 24.0 },
+    };
     let mut offset = authored.map_or(pos(0.0, -18.0), |l| l.offset);
     let geometry = |fraction, offset: Position| {
         let anchor = point_along_polyline(points, fraction).unwrap_or(pos(0.0, 0.0));
@@ -1629,7 +1474,6 @@ fn make_label(
     let (anchor, center, bounds) = geometry(fraction, offset);
     EdgeLabelGeometry {
         text,
-        state_layout,
         fraction,
         anchor,
         center,

crates/oa-core/src/session.rs

@@ -952,6 +952,21 @@ fn layout(p: &mut Project, diagram: Id) -> Result<(), ModelError> {
             "Scenario layout requires the Scenario geometry operation.".into(),
         ));
     }
+    // Freeze reset eligibility before this operation changes geometry. In a
+    // Batch this is the staged input, not an independently validated prefix.
+    let view = crate::projection::project_view(p, diagram);
+    let visible_nodes: BTreeSet<_> = view.nodes.iter().map(|node| node.id).collect();
+    let reset_routes: BTreeSet<_> = view
+        .edges
+        .iter()
+        .filter_map(|edge| {
+            let owners = crate::projection::edge_endpoint_placements(p, d, edge.id)?;
+            (owners == (edge.source, edge.target)
+                && visible_nodes.contains(&edge.source)
+                && visible_nodes.contains(&edge.target))
+            .then_some(edge.id)
+        })
+        .collect();
     let parents = crate::projection::parents(p, d);
     let mut children: BTreeMap<Option<Id>, Vec<Id>> = BTreeMap::new();
     for (id, parent) in &parents {
@@ -1044,7 +1059,7 @@ fn layout(p: &mut Project, diagram: Id) -> Result<(), ModelError> {
         }
         node
     };
-    let edges: BTreeSet<_> = crate::projection::project_view(p, diagram)
+    let edges: BTreeSet<_> = view
         .edges
         .iter()
         .filter_map(|edge| {
@@ -1138,5 +1153,11 @@ fn layout(p: &mut Project, diagram: Id) -> Result<(), ModelError> {
             *existing = route;
         }
     }
+    for route in &mut d.routes {
+        if reset_routes.contains(&route.edge) {
+            route.waypoints.clear();
+            route.label = None;
+        }
+    }
     Ok(())
 }

crates/oa-core/tests/release_routing.rs

@@ -649,7 +649,7 @@ fn group_translation_beyond_coordinate_limit_rolls_back_nodes_and_routes() {
 }
 
 #[test]
-fn layout_preserves_authored_route_count_order_labels_and_undo() {
+fn layout_resets_visible_pins_labels_preserving_route_count_order_and_undo() {
     let f = routed(fixture());
     let mut session = Session::new(f.project.clone());
     session.execute(Command::Layout(f.diagram)).unwrap();
@@ -657,10 +657,10 @@ fn layout_preserves_authored_route_count_order_labels_and_undo() {
     assert_eq!(routes.len(), 2);
     assert_eq!(routes[0].edge, f.edge);
     assert_eq!(routes[1].edge, f.external);
-    assert_eq!(routes[0].waypoints.len(), 2);
-    assert_eq!(routes[1].waypoints.len(), 2);
-    assert_eq!(routes[0].label, route(f.edge).label);
-    assert_eq!(routes[1].label, route(f.external).label);
+    assert!(routes[0].waypoints.is_empty());
+    assert!(routes[1].waypoints.is_empty());
+    assert_eq!(routes[0].label, None);
+    assert_eq!(routes[1].label, None);
     assert_eq!(
         session.project().diagrams[&f.second],
         f.project.diagrams[&f.second]
@@ -669,6 +669,452 @@ fn layout_preserves_authored_route_count_order_labels_and_undo() {
     assert_eq!(session.project(), &f.project);
 }
 
+#[test]
+fn layout_keeps_attachments_port_anchors_empty_entries_and_exact_history() {
+    let mut f = routed(fixture());
+    let extra = f.project.relate(
+        RelationKind::FunctionalExchange,
+        "Attachment only",
+        f.a,
+        f.b,
+    );
+    let empty = f
+        .project
+        .relate(RelationKind::FunctionalExchange, "Explicit empty", f.a, f.b);
+    let attachment = EdgeAttachment {
+        side: PortAnchorSide::Bottom,
+        offset: 0.23,
+    };
+    let opposite = EdgeAttachment {
+        side: PortAnchorSide::Top,
+        offset: 0.81,
+    };
+    let mut fraction_only = route(f.edge);
+    fraction_only.waypoints.clear();
+    fraction_only.label = Some(EdgeLabel {
+        fraction: 0.73,
+        offset: Position { x: 0., y: 0. },
+    });
+    fraction_only.source_attachment = Some(attachment);
+    fraction_only.target_attachment = Some(opposite);
+    let attachment_only = EdgeRoute {
+        edge: extra,
+        source_attachment: Some(attachment),
+        target_attachment: None,
+        waypoints: vec![],
+        label: None,
+    };
+    let empty_route = EdgeRoute {
+        edge: empty,
+        source_attachment: None,
+        target_attachment: None,
+        waypoints: vec![],
+        label: None,
+    };
+    f.project.diagrams.get_mut(&f.diagram).unwrap().routes = vec![
+        route(f.external),
+        fraction_only.clone(),
+        attachment_only.clone(),
+        empty_route.clone(),
+    ];
+    let RelationBody::FunctionalExchange { source_port, .. } = f.project.relations[&f.edge].body
+    else {
+        unreachable!()
+    };
+    let owner = node(&f.project, f.diagram, f.a);
+    let anchor = PortAnchor {
+        port: source_port,
+        side: PortAnchorSide::Left,
+        offset: 0.37,
+    };
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .nodes
+        .get_mut(&owner)
+        .unwrap()
+        .port_anchors
+        .push(anchor.clone());
+    validate_candidate(&f.project).unwrap();
+    let original_source = language::format(&f.project);
+    let mut session = Session::new(f.project.clone());
+    session.execute(Command::Layout(f.diagram)).unwrap();
+    let after = session.project().clone();
+    let mut expected_external = route(f.external);
+    expected_external.waypoints.clear();
+    expected_external.label = None;
+    fraction_only.label = None;
+    assert_eq!(
+        after.diagrams[&f.diagram].routes,
+        vec![
+            expected_external,
+            fraction_only,
+            attachment_only,
+            empty_route
+        ]
+    );
+    assert_eq!(
+        after.diagrams[&f.diagram].nodes[&owner].port_anchors,
+        vec![anchor]
+    );
+    assert_eq!(after.elements, f.project.elements);
+    assert_eq!(after.relations, f.project.relations);
+    assert_eq!(after.diagrams[&f.second], f.project.diagrams[&f.second]);
+    assert_eq!(language::parse(&language::format(&after)).unwrap(), after);
+    let command: Command =
+        serde_json::from_value(serde_json::json!({"Layout": f.diagram})).unwrap();
+    assert_eq!(execute_batch(&f.project, &[command]).unwrap(), after);
+    session.undo();
+    assert_eq!(session.project(), &f.project);
+    assert_eq!(language::format(session.project()), original_source);
+    assert!(!session.can_undo());
+    session.redo();
+    assert_eq!(session.project(), &after);
+}
+
+fn shift_all(p: &mut Project, d: Id, x: f32, y: f32) {
+    for placement in p.diagrams.get_mut(&d).unwrap().nodes.values_mut() {
+        placement.position.x += x;
+        placement.position.y += y;
+    }
+}
+
+fn translated_expected(mut route: EdgeRoute, x: f32, y: f32) -> EdgeRoute {
+    for point in &mut route.waypoints {
+        point.x += x;
+        point.y += y;
+    }
+    route
+}
+
+#[test]
+fn layout_resets_only_visible_actual_owners_and_retains_filtered_and_missing_routes() {
+    let mut f = fixture();
+    let outside = f.project.relations[&f.external].target();
+    let visible = f.project.relate(
+        RelationKind::FunctionalExchange,
+        "Visible overview",
+        f.group,
+        outside,
+    );
+    let absent = f
+        .project
+        .add_element(Kind::Function, Layer::Sa, "Not placed", None)
+        .unwrap();
+    let missing = f.project.relate(
+        RelationKind::FunctionalExchange,
+        "Dormant missing owner",
+        f.b,
+        absent,
+    );
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .view_options
+        .hidden_edges = vec![f.edge, f.external];
+    // Freeze a geometry-only starting point before adding sentinels. The oracle
+    // below names the eligible edge and exact authored deltas independently.
+    let base = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    f.project = base.clone();
+    shift_all(&mut f.project, f.diagram, 40., 60.);
+    let outside_node = node(&f.project, f.diagram, outside);
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .nodes
+        .get_mut(&outside_node)
+        .unwrap()
+        .position
+        .x += 7.;
+    f.project.diagrams.get_mut(&f.diagram).unwrap().routes = vec![
+        route(visible),
+        route(f.edge),
+        route(f.external),
+        route(missing),
+    ];
+    let view = projection::project_view(&f.project, f.diagram);
+    assert_eq!(
+        view.edges.iter().map(|edge| edge.id).collect::<Vec<_>>(),
+        vec![visible]
+    );
+    let after = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    assert_eq!(
+        after.diagrams[&f.diagram].nodes,
+        base.diagrams[&f.diagram].nodes
+    );
+    let mut reset = route(visible);
+    reset.waypoints.clear();
+    reset.label = None;
+    assert_eq!(
+        after.diagrams[&f.diagram].routes,
+        vec![
+            reset,
+            translated_expected(route(f.edge), -40., -60.),
+            route(f.external),
+            route(missing)
+        ]
+    );
+    assert_eq!(after.diagrams[&f.second], f.project.diagrams[&f.second]);
+}
+
+#[test]
+fn layout_folded_routes_use_actual_owner_deltas_without_resetting_promoted_edges() {
+    let mut f = routed(fixture());
+    let group = node(&f.project, f.diagram, f.group);
+    let outside = f.project.relations[&f.external].target();
+    let outside_node = node(&f.project, f.diagram, outside);
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .nodes
+        .get_mut(&group)
+        .unwrap()
+        .collapsed = true;
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .routes
+        .clear();
+    let base = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    f.project = base.clone();
+    shift_all(&mut f.project, f.diagram, 40., 60.);
+    // The visible container's displacement differs from its hidden children.
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .nodes
+        .get_mut(&group)
+        .unwrap()
+        .position
+        .x += 13.;
+    f.project
+        .diagrams
+        .get_mut(&f.diagram)
+        .unwrap()
+        .nodes
+        .get_mut(&outside_node)
+        .unwrap()
+        .position
+        .x += 7.;
+    f.project.diagrams.get_mut(&f.diagram).unwrap().routes = vec![route(f.edge), route(f.external)];
+    let view = projection::project_view(&f.project, f.diagram);
+    assert!(!view.edges.iter().any(|edge| edge.id == f.edge));
+    let promoted = view
+        .edges
+        .iter()
+        .find(|edge| edge.id == f.external)
+        .unwrap();
+    assert_eq!(promoted.source, group);
+    let after = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    assert_eq!(
+        after.diagrams[&f.diagram].nodes,
+        base.diagrams[&f.diagram].nodes
+    );
+    assert_eq!(
+        after.diagrams[&f.diagram].routes,
+        vec![
+            translated_expected(route(f.edge), -40., -60.),
+            route(f.external)
+        ]
+    );
+    assert_eq!(after.diagrams[&f.second], f.project.diagrams[&f.second]);
+}
+
+#[test]
+fn layout_batch_uses_staged_visibility_and_one_final_validation_history_boundary() {
+    let f = routed(fixture());
+    let mut hidden = f.project.diagrams[&f.diagram].clone();
+    hidden.view_options.hidden_edges = vec![f.edge, f.external];
+    let mut invalid = f.project.elements[&f.a].clone();
+    invalid.alias = f.project.elements[&f.b].alias.clone();
+    // Duplicate alias is repaired later in the same transaction. Layout must
+    // not add prefix validation, nor reset routes hidden by the preceding edit.
+    let mut session = Session::new(f.project.clone());
+    session
+        .execute(Command::Batch(vec![
+            Command::EditElement(f.a, invalid),
+            Command::EditDiagram(f.diagram, hidden),
+            Command::Layout(f.diagram),
+            Command::EditElement(f.a, f.project.elements[&f.a].clone()),
+        ]))
+        .unwrap();
+    let after = session.project().clone();
+    assert_eq!(
+        after.diagrams[&f.diagram]
+            .routes
+            .iter()
+            .map(|r| (r.edge, r.waypoints.len(), r.label.clone()))
+            .collect::<Vec<_>>(),
+        vec![
+            (f.edge, 2, route(f.edge).label),
+            (f.external, 2, route(f.external).label)
+        ]
+    );
+    session.undo();
+    assert_eq!(session.project(), &f.project);
+    assert!(!session.can_undo());
+    session.redo();
+    assert_eq!(session.project(), &after);
+    let mut bad = after.elements[&f.a].clone();
+    bad.alias = after.elements[&f.b].alias.clone();
+    let revision = session.revision();
+    assert!(
+        session
+            .execute(Command::Batch(vec![
+                Command::Layout(f.diagram),
+                Command::EditElement(f.a, bad)
+            ]))
+            .is_err()
+    );
+    assert_eq!(session.project(), &after);
+    assert_eq!(session.revision(), revision);
+}
+
+#[test]
+fn layout_outside_projection_routes_keep_overrides_and_inactive_owner_positions() {
+    let mut f = fixture();
+    // Decomposition admits ordinary relations, including FunctionalExchange.
+    // Capabilities explicitly excludes those edges and their Function owners;
+    // retain their authored placements while arranging a real visible node.
+    let capability = f
+        .project
+        .add_element(
+            Kind::SystemCapability,
+            Layer::Sa,
+            "Visible capability",
+            None,
+        )
+        .unwrap();
+    let capability_node = f
+        .project
+        .place(f.diagram, capability, Position { x: 100., y: 100. });
+    f.project.diagrams.get_mut(&f.diagram).unwrap().projection = ProjectionKind::Capabilities;
+    let base = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    f.project = base.clone();
+    shift_all(&mut f.project, f.diagram, 40., 60.);
+    f.project.diagrams.get_mut(&f.diagram).unwrap().routes = vec![route(f.edge), route(f.external)];
+    validate_candidate(&f.project).unwrap();
+    let projected = projection::project_view(&f.project, f.diagram);
+    assert_eq!(projected.nodes.len(), 1);
+    assert_eq!(projected.nodes[0].id, capability_node);
+    assert!(
+        projected
+            .edges
+            .iter()
+            .all(|edge| edge.id != f.edge && edge.id != f.external)
+    );
+    let mut expected = f.project.clone();
+    expected.diagrams.get_mut(&f.diagram).unwrap().nodes.insert(
+        capability_node,
+        base.diagrams[&f.diagram].nodes[&capability_node].clone(),
+    );
+    let after = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    assert_ne!(
+        after.diagrams[&f.diagram].nodes[&capability_node].position,
+        f.project.diagrams[&f.diagram].nodes[&capability_node].position
+    );
+    assert_eq!(
+        after.diagrams[&f.diagram].routes,
+        vec![route(f.edge), route(f.external)]
+    );
+    assert_eq!(
+        after, expected,
+        "Owners excluded by the projection receive no Layout delta; their pins stay fixed"
+    );
+}
+
+#[test]
+fn identical_layout_transaction_keeps_redo() {
+    let mut p = Project::empty();
+    let element = p
+        .add_element(Kind::Function, Layer::Sa, "Unplaced", None)
+        .unwrap();
+    let diagram = p.ensure_diagram(Layer::Sa);
+    let mut changed = p.elements[&element].clone();
+    changed.name = "Renamed unplaced".into();
+    let mut session = Session::new(p.clone());
+    session
+        .execute(Command::EditElement(element, changed))
+        .unwrap();
+    session.undo();
+    let revision = session.revision();
+    session
+        .execute(Command::Batch(vec![
+            Command::Layout(diagram),
+            Command::Layout(diagram),
+        ]))
+        .unwrap();
+    assert_eq!(session.project(), &p);
+    assert_eq!(session.revision(), revision);
+    assert!(session.can_redo());
+}
+
+#[test]
+fn layout_route_reset_alone_is_one_edit_and_repeated_layout_keeps_redo() {
+    let f = fixture();
+    let mut before = execute_batch(&f.project, &[Command::Layout(f.diagram)]).unwrap();
+    assert!(!before.diagrams[&f.diagram].nodes.is_empty());
+    before.diagrams.get_mut(&f.diagram).unwrap().routes = vec![route(f.edge), route(f.external)];
+    // Node geometry is already arranged. The complete expected Project differs
+    // only in the two independently named eligible route overrides.
+    let mut expected = before.clone();
+    for route in &mut expected.diagrams.get_mut(&f.diagram).unwrap().routes {
+        route.waypoints.clear();
+        route.label = None;
+    }
+    let mut session = Session::new(before.clone());
+    session.execute(Command::Layout(f.diagram)).unwrap();
+    assert_eq!(
+        session.project().diagrams[&f.diagram].nodes,
+        before.diagrams[&f.diagram].nodes
+    );
+    assert_eq!(session.project(), &expected);
+    assert_eq!(
+        session.revision(),
+        1,
+        "Clearing overrides is a real edit without any node movement"
+    );
+    session.execute(Command::Layout(f.diagram)).unwrap();
+    assert_eq!(session.project(), &expected);
+    assert_eq!(
+        session.revision(),
+        1,
+        "A repeated identical Layout adds no history"
+    );
+    session.undo();
+    assert_eq!(session.project(), &before);
+    assert!(
+        !session.can_undo(),
+        "The route-only reset was exactly one history entry"
+    );
+    session.redo();
+    assert_eq!(session.project(), &expected);
+
+    let mut renamed = expected.elements[&f.a].clone();
+    renamed.name = "Pending redo of rename".into();
+    session.execute(Command::EditElement(f.a, renamed)).unwrap();
+    let after_rename = session.project().clone();
+    session.undo();
+    assert_eq!(session.project(), &expected);
+    assert!(session.can_redo());
+    let revision = session.revision();
+    session.execute(Command::Layout(f.diagram)).unwrap();
+    assert_eq!(session.project(), &expected);
+    assert_eq!(session.revision(), revision);
+    assert!(
+        session.can_redo(),
+        "No-op Layout retains an unrelated undone edit"
+    );
+    session.redo();
+    assert_eq!(session.project(), &after_rename);
+}
+
 #[test]
 fn old_models_get_empty_routes_and_route_json_is_strict() {
     for bytes in [

crates/oa-core/tests/state_diagrams.rs

@@ -704,6 +704,98 @@ fn moving_a_region_does_not_translate_pins_attached_to_a_stationary_state_bounda
     assert_eq!(after.diagrams[&f.d].routes[0].waypoints, pins);
 }
 
+#[test]
+fn layout_retains_hidden_state_boundary_pins_and_internal_routes() {
+    let mut f = fixture();
+    f.p.diagrams
+        .get_mut(&f.d)
+        .unwrap()
+        .view_options
+        .hidden_edges = vec![f.local];
+    let baseline = execute_batch(&f.p, &[Command::Layout(f.d)]).unwrap();
+    f.p = baseline.clone();
+    let entry = node(&f.p, f.d, f.entry);
+    let leaf = node(&f.p, f.d, f.leaf);
+    let boundary = node(&f.p, f.d, f.a);
+    for id in [entry, leaf] {
+        let n =
+            f.p.diagrams
+                .get_mut(&f.d)
+                .unwrap()
+                .nodes
+                .get_mut(&id)
+                .unwrap();
+        n.position.x += 10.;
+        n.position.y += 10.;
+    }
+    let hidden = EdgeRoute {
+        edge: f.local,
+        source_attachment: None,
+        target_attachment: None,
+        waypoints: vec![point(280., 390.), point(280., 470.)],
+        label: Some(EdgeLabel {
+            fraction: 0.4,
+            offset: point(3., -7.),
+        }),
+    };
+    let internal = EdgeRoute {
+        edge: f.internal,
+        source_attachment: None,
+        target_attachment: None,
+        waypoints: vec![point(320., 440.)],
+        label: Some(EdgeLabel {
+            fraction: 0.7,
+            offset: point(0., 0.),
+        }),
+    };
+    let visible = EdgeRoute {
+        edge: f.self_edge,
+        source_attachment: Some(EdgeAttachment {
+            side: PortAnchorSide::Left,
+            offset: 0.25,
+        }),
+        target_attachment: Some(EdgeAttachment {
+            side: PortAnchorSide::Right,
+            offset: 0.75,
+        }),
+        waypoints: vec![point(700., 100.)],
+        label: Some(EdgeLabel {
+            fraction: 0.6,
+            offset: point(0., 0.),
+        }),
+    };
+    f.p.diagrams.get_mut(&f.d).unwrap().routes =
+        vec![hidden.clone(), internal.clone(), visible.clone()];
+    let projected = project_view(&f.p, f.d);
+    assert!(
+        !projected
+            .edges
+            .iter()
+            .any(|e| e.id == f.local || e.id == f.internal)
+    );
+    assert!(projected.edges.iter().any(|e| e.id == f.self_edge));
+    let after = execute_batch(&f.p, &[Command::Layout(f.d)]).unwrap();
+    for id in [entry, leaf, boundary] {
+        assert_eq!(
+            after.diagrams[&f.d].nodes[&id].position,
+            baseline.diagrams[&f.d].nodes[&id].position
+        );
+    }
+    assert_eq!(
+        after.diagrams[&f.d].nodes[&boundary].position,
+        f.p.diagrams[&f.d].nodes[&boundary].position,
+        "The endpoint's owning State boundary stayed stationary"
+    );
+    let mut reset = visible;
+    reset.waypoints.clear();
+    reset.label = None;
+    assert_eq!(
+        after.diagrams[&f.d].routes,
+        vec![hidden, internal, reset],
+        "Equal entry/leaf deltas must not translate a pin on their stationary State boundary"
+    );
+}
+
 #[test]
 fn initial_transition_attaches_to_the_compact_symbol_and_preview_keeps_settled_geometry() {
     let mut f = fixture();

crates/oa-core/tests/state_label_layout.rs

@@ -1,145 +0,0 @@
-use oa_core::{projection::project_diagram, routing::*, *};
-
-fn fixture() -> (Project, Id, Id) {
-    let mut project = language::parse(include_str!(
-        "../../../harness/experiments/edge-attachments-20260922/native-fixture.arcadia"
-    ))
-    .unwrap();
-    let edge = Id::parse_str("ea202922-0033-4000-8000-000000000041").unwrap();
-    let diagram = Id::parse_str("ea202922-0033-4000-8000-000000000200").unwrap();
-    let relation = project.relations.get_mut(&edge).unwrap();
-    relation.name = "Ready\nfor review".into();
-    if let RelationBody::StateTransition { guard, .. } = &mut relation.body {
-        *guard = "request_ready".into();
-    }
-    (project, diagram, edge)
-}
-
-#[test]
-fn state_two_block_layout_separates_lines_and_keeps_authored_geometry_and_project() {
-    let (project, diagram, edge) = fixture();
-    let before = project.clone();
-    let diagram = &project.diagrams[&diagram];
-    let view = project_diagram(&project, diagram);
-    let routed = route_diagram(&project, diagram, &view);
-    let edge_geometry = &routed.edges[&edge];
-    let label = &edge_geometry.label;
-    let layout = label.state_layout.as_ref().unwrap();
-    assert_eq!(layout.title_lines, ["Ready", "for review"]);
-    assert_eq!(
-        layout.summary_lines,
-        ["External · Completion [request_ready]"]
-    );
-    assert_eq!(label.text, "External · Completion [request_ready]");
-    assert_eq!(layout.title_line_position(1), Position { x: 5., y: 12. });
-    assert_eq!(layout.summary_line_position(0), Position { x: 5., y: 24. });
-    assert_eq!(
-        label.bounds.size,
-        Size {
-            width: 269.,
-            height: 36.
-        }
-    );
-    let authored = diagram
-        .routes
-        .iter()
-        .find(|r| r.edge == edge)
-        .unwrap()
-        .label
-        .as_ref()
-        .unwrap();
-    assert_eq!(label.fraction, authored.fraction);
-    let anchor = point_along_polyline(&edge_geometry.points, authored.fraction).unwrap();
-    assert_eq!(label.anchor, anchor);
-    assert_eq!(
-        label.center,
-        Position {
-            x: anchor.x + authored.offset.x,
-            y: anchor.y + authored.offset.y
-        }
-    );
-    assert_eq!(project, before);
-}
-
-#[test]
-fn state_display_breaks_tabs_and_blank_lines_are_single_sourced() {
-    let summary = "A sufficiently long unchanged summary";
-    for title in [
-        "Ready\nfor review",
-        "Ready\r\nfor review",
-        "Ready\rfor review",
-        "Ready\u{85}for review",
-        "Ready\u{2028}for review",
-        "Ready\u{2029}for review",
-    ] {
-        let layout = StateLabelLayout::new(title, summary, &|s| s.chars().count() as f32);
-        assert_eq!(layout.title_lines, ["Ready", "for review"]);
-        assert_eq!(layout.summary_line_position(0).y, 24.);
-    }
-    let layout = StateLabelLayout::new("Ready\n\nfor\treview\n", summary, &|s| {
-        s.chars().count() as f32
-    });
-    assert_eq!(layout.title_lines, ["Ready", "", "for    review", ""]);
-    assert_eq!(layout.summary_line_position(0).y, 48.);
-    assert_eq!(layout.size().height, 60.);
-    let empty = StateLabelLayout::new("", "", &|_| 0.);
-    assert!(empty.title_lines.is_empty() && empty.summary_lines.is_empty());
-    assert_eq!(empty.size().height, 24.);
-}
-
-#[test]
-fn state_summary_raw_prefix_and_title_budget_survive_display_normalization() {
-    let (mut project, diagram, edge) = fixture();
-    let relation = project.relations.get_mut(&edge).unwrap();
-    relation.name = "T".repeat(80);
-    if let RelationBody::StateTransition { guard, .. } = &mut relation.body {
-        *guard = format!("first\r\n{}", "guard".repeat(20));
-    }
-    let full = state_transition_summary(&project, &project.relations[&edge]);
-    let raw: String = full.chars().take(47).chain(std::iter::once('…')).collect();
-    let d = &project.diagrams[&diagram];
-    let routed = route_diagram(&project, d, &project_diagram(&project, d));
-    let label = &routed.edges[&edge].label;
-    assert_eq!(label.text, raw);
-    assert!(label.text.contains("\r\n"));
-    let layout = label.state_layout.as_ref().unwrap();
-    assert_eq!(layout.title_lines, [format!("{}…", "T".repeat(56))]);
-    assert_eq!(
-        layout.summary_lines,
-        raw.replace("\r\n", "\n")
-            .split('\n')
-            .map(str::to_owned)
-            .collect::<Vec<_>>()
-    );
-    assert_eq!(label.text.chars().count(), 48);
-}
-
-#[test]
-fn supplied_measurement_controls_settled_and_preview_state_bounds_only() {
-    let (project, diagram, edge) = fixture();
-    let d = &project.diagrams[&diagram];
-    let view = project_diagram(&project, d);
-    let baseline = route_diagram(&project, d, &view);
-    let wide = |_: &str| 400.;
-    let measured = route_diagram_with_state_label_measurement(&project, d, &view, &wide);
-    let label = &measured.edges[&edge].label;
-    assert_eq!(
-        label.bounds.size,
-        Size {
-            width: 410.,
-            height: 36.
-        }
-    );
-    assert_eq!(label.center, baseline.edges[&edge].label.center);
-    assert_eq!(measured.edges[&edge].points, baseline.edges[&edge].points);
-    let preview =
-        route_edge_preview_with_state_label_measurement(&project, d, &view, &measured, edge, &wide);
-    assert_eq!(preview.edges[&edge].label, *label);
-    let mut ordinary = d.clone();
-    ordinary.projection = ProjectionKind::Allocation;
-    let ordinary_measured =
-        route_diagram_with_state_label_measurement(&project, &ordinary, &view, &wide);
-    let ordinary_default = route_diagram(&project, &ordinary, &view);
-    assert!(ordinary_measured.edges[&edge].label.state_layout.is_none());
-    assert_eq!(ordinary_measured, ordinary_default);
-}

crates/oa-desktop/src/app.rs

@@ -5241,7 +5241,7 @@ impl App {
                 if route.waypoints.len() >= 128 {
                     return;
                 }
-                let geometry = crate::state_label::route_diagram(self.project(), diagram, &view);
+                let geometry = oa_core::routing::route_diagram(self.project(), diagram, &view);
                 let edge = &geometry.edges[&self.selected];
                 // Mandatory port leads are inside the card's clearance. A pin
                 // starts beyond those leads, including coincident short stubs.
@@ -5321,7 +5321,7 @@ impl App {
             self.pan = iced::Vector::new(30., 30.);
             return;
         }
-        let geometry = crate::state_label::route_diagram(
+        let geometry = oa_core::routing::route_diagram(
             self.project(),
             &self.project().diagrams[&self.active_diagram.unwrap()],
             &view,

crates/oa-desktop/src/app/allocation_drag.rs

@@ -920,7 +920,7 @@ impl App {
                 };
                 let frozen = affected.map(|affected| {
                     let d = &self.project().diagrams[&diagram];
-                    let routed = crate::state_label::route_diagram(self.project(), d, &view);
+                    let routed = routing::route_diagram(self.project(), d, &view);
                     Arc::new(Frozen::capture(
                         self.project(),
                         d,
@@ -1066,7 +1066,7 @@ impl App {
                             self.reconcile_multiselect();
                         }
                     } else {
-                        let routed = Arc::new(crate::state_label::route_diagram(candidate.project(), placed.diagram(), placed.view()));
+                        let routed = Arc::new(routing::route_diagram(candidate.project(), placed.diagram(), placed.view()));
                         preview = Some(Arc::new(Preview { token, candidate, placement: placed.into_preview(), routed }));
                     }
                     Ok(label)

crates/oa-desktop/src/app/state_diagram.rs

@@ -85,7 +85,7 @@ impl App {
         };
         let diagram = &self.project().diagrams[&context.diagram];
         let view = projection::project_diagram(self.project(), diagram);
-        let bounds = crate::state_label::route_diagram(self.project(), diagram, &view).bounds;
+        let bounds = routing::route_diagram(self.project(), diagram, &view).bounds;
         let viewport = self.behavior.diagram.viewport.unwrap_or(iced::Size::new(
             (self.window_size.width - 610.).max(280.),
             (self.window_size.height - 320.).max(240.),

crates/oa-desktop/src/behavior/state_canvas.rs

@@ -744,7 +744,7 @@ pub(crate) fn diagram_usages(
             }
         }
     }
-    for edge in crate::state_label::route_diagram(project, diagram, view)
+    for edge in routing::route_diagram(project, diagram, view)
         .edges
         .values()
     {
@@ -754,10 +754,10 @@ pub(crate) fn diagram_usages(
         if edge.id == subject || edge.label.text.is_empty() {
             continue;
         }
-        // The shared plan paints the complete retained raw summary. Keep its
-        // original prefix here: display normalization must not shift field offsets.
-        let painted = &edge.label.text;
-        if let Some(role) = transition_label_role_in_text(project, relation, subject, painted) {
+        // Routing already shortens external summaries before the canvas applies
+        // its width limit. Compare against precisely that doubly shortened text.
+        let painted = short(&edge.label.text, edge.label.bounds.size.width - 10., 10.);
+        if let Some(role) = transition_label_role_in_text(project, relation, subject, &painted) {
             result.push(Usage {
                 subject,
                 surface: Surface::Saved(diagram.id),
@@ -1078,7 +1078,7 @@ impl StateCanvas<'_> {
         }
         let view = projection::project_diagram(self.project, &diagram);
         let routed = if let Some(gesture) = state.bend.as_ref().filter(|_| bend_preview.is_some()) {
-            crate::state_label::route_edge_preview(
+            routing::route_edge_preview(
                 self.project,
                 &diagram,
                 &view,
@@ -1086,7 +1086,7 @@ impl StateCanvas<'_> {
                 gesture.route.edge,
             )
         } else {
-            crate::state_label::route_diagram(self.project, &diagram, &view)
+            routing::route_diagram(self.project, &diagram, &view)
         };
         let symbol_labels = symbol_labels(self.project, &view, &routed);
         let scene = Arc::new(Scene {
@@ -1153,19 +1153,6 @@ impl StateCanvas<'_> {
             .map(|n| n.element)
     }
     fn hit(&self, scene: &Scene, world: Point) -> Option<Hit> {
-        // State labels paint opaque backgrounds above nodes and rows. Select
-        // the last painted label at an overlapping pixel, including its padding.
-        // Endpoint/bend handling remains ahead of this ordinary hit path.
-        if let Some(edge) = scene.routed.edges.values().rev().find(|edge| {
-            edge.label.state_layout.is_some()
-                && Rectangle::new(
-                    point(edge.label.bounds.position),
-                    Size::new(edge.label.bounds.size.width, edge.label.bounds.size.height),
-                )
-                .contains(world)
-        }) {
-            return Some(Hit::Transition(edge.id));
-        }
         let node = self.node_at(scene, world);
         if let Some(node) = node {
             if let Some((relation, _)) = state_action_rows(self.project, node)
@@ -2120,29 +2107,21 @@ impl canvas::Program<Event> for StateCanvas<'_> {
                         Size::new(label.bounds.size.width, label.bounds.size.height),
                         Color::WHITE,
                     );
-                    if let Some(plan) = &label.state_layout {
-                        for (line, offset, ink) in plan
-                            .title_lines
-                            .iter()
-                            .enumerate()
-                            .map(|(index, line)| (line, plan.title_line_position(index), color))
-                            .chain(plan.summary_lines.iter().enumerate().map(|(index, line)| {
-                                (line, plan.summary_line_position(index), style::MUTED)
-                            }))
-                        {
-                            frame.fill_text(Text {
-                                content: line.clone(),
-                                position: point(label.bounds.position)
-                                    + Vector::new(offset.x, offset.y),
-                                size: routing::StateLabelLayout::FONT_SIZE.into(),
-                                line_height: iced::widget::text::LineHeight::Absolute(
-                                    routing::StateLabelLayout::LINE_HEIGHT.into(),
-                                ),
-                                color: ink,
-                                ..Default::default()
-                            });
-                        }
-                    }
+                    let width = label.bounds.size.width - 10.;
+                    label_text(
+                        frame,
+                        short(self.project.named(edge.id), width, 10.),
+                        point(label.bounds.position) + Vector::new(5., 0.),
+                        10.,
+                        color,
+                    );
+                    label_text(
+                        frame,
+                        short(&label.text, width, 10.),
+                        point(label.bounds.position) + Vector::new(5., 12.),
+                        10.,
+                        style::MUTED,
+                    );
                     if active
                         && self
                             .current_selection()
@@ -2616,7 +2595,6 @@ mod tests {
 
     include!("state_bend_tests.rs");
     include!("state_multiselect_canvas_tests.rs");
-    include!("state_label_canvas_tests.rs");
 
     struct Fixture {
         project: Project,
@@ -2825,45 +2803,6 @@ mod tests {
         assert!(!retained_label_field("1234A678", "1234…", 4));
     }
 
-    #[test]
-    fn state_label_usage_keeps_raw_crlf_prefix_for_later_typed_fields() {
-        let mut f = fixture();
-        let first = f
-            .project
-            .add_element(Kind::Event, Layer::Sa, "漢\r\nB", None)
-            .unwrap();
-        let second = f
-            .project
-            .add_element(Kind::Event, Layer::Sa, "Visible", None)
-            .unwrap();
-        let edge = f
-            .project
-            .relate(RelationKind::StateTransition, "Ready\nfor review", f.a, f.b);
-        if let RelationBody::StateTransition { triggers, .. } =
-            &mut f.project.relations.get_mut(&edge).unwrap().body
-        {
-            *triggers = vec![first, second];
-        }
-        let diagram = &f.project.diagrams[&f.diagram];
-        let view = projection::project_diagram(&f.project, diagram);
-        let routed = crate::state_label::route_diagram(&f.project, diagram, &view);
-        let label = &routed.edges[&edge].label;
-        assert_eq!(label.text, "External · 漢\r\nB OR Visible");
-        assert_eq!(
-            label.state_layout.as_ref().unwrap().summary_lines,
-            ["External · 漢", "B OR Visible"]
-        );
-        let usages = diagram_usages(&f.project, diagram, &view, second);
-        assert!(
-            usages
-                .iter()
-                .any(|u| u.target == Target::Edge(edge) && u.role == "transition trigger")
-        );
-        // Feeding normalized display text to raw-prefix matching would lose
-        // the second field at CRLF. Its raw name and source remain unchanged.
-        assert_eq!(f.project.named(first), "漢\r\nB");
-    }
-
     #[test]
     fn diagram_usage_external_labels_obey_routing_cutoff_while_internal_rows_retain_full_summary() {
         use crate::diagram_usage::Target;
@@ -2898,9 +2837,9 @@ mod tests {
         }
         let diagram = &f.project.diagrams[&f.diagram];
         let view = projection::project_diagram(&f.project, diagram);
-        let routed = crate::state_label::route_diagram(&f.project, diagram, &view);
+        let routed = routing::route_diagram(&f.project, diagram, &view);
         let edge = &routed.edges[&external];
-        let painted = &edge.label.text;
+        let painted = short(&edge.label.text, edge.label.bounds.size.width - 10., 10.);
         // Independent painted-text oracle: 11 prefix characters + 35 As, then
         // only the space before OR survives the routing limit.
         assert_eq!(edge.label.text, format!("External · {} …", "A".repeat(35)));

crates/oa-desktop/src/behavior/state_edit.rs

@@ -328,7 +328,7 @@ pub fn bend_route(
     }
     let stored = project.diagrams.get(&diagram)?;
     let view = projection::project_diagram(project, stored);
-    let geometry = crate::state_label::route_diagram(project, stored, &view)
+    let geometry = oa_core::routing::route_diagram(project, stored, &view)
         .edges
         .remove(&relation)?;
     (!geometry.custom_suspended).then_some(geometry)

crates/oa-desktop/src/behavior/state_label_canvas_tests.rs

@@ -1,463 +0,0 @@
-// Included in state_canvas::tests. Fixed world points exercise the real scene
-// and Program input, rather than choosing a successful point from returned bounds.
-
-fn multiline_label_fixture() -> (Fixture, Id, Id) {
-    let mut f = fixture();
-    let work = f
-        .project
-        .add_element(Kind::Function, Layer::Sa, "Record request", None)
-        .unwrap();
-    let action = f
-        .project
-        .relate(RelationKind::StateAction, "Record shared work", f.a, work);
-    if let RelationBody::StateAction { phase, .. } =
-        &mut f.project.relations.get_mut(&action).unwrap().body
-    {
-        *phase = StateActionKind::Entry;
-    }
-    let generated = f
-        .project
-        .relate(RelationKind::StateTransition, "Ready\nfor review", f.b, f.c);
-    let edge = Id::from_u128(36_001);
-    let mut relation = f.project.relations.remove(&generated).unwrap();
-    relation.id = edge;
-    if let RelationBody::StateTransition { guard, .. } = &mut relation.body {
-        *guard = "request_ready".into();
-    }
-    f.project.relations.insert(edge, relation);
-    // B is (760,180), 224x94. Its bottom midpoint is (872,274).
-    // Fraction zero plus this authored offset fixes the label center at (440,260),
-    // over A's entry row (y244..270), independently of text width/routing choices.
-    f.project
-        .diagrams
-        .get_mut(&f.diagram)
-        .unwrap()
-        .routes
-        .push(EdgeRoute {
-            edge,
-            waypoints: vec![],
-            source_attachment: Some(EdgeAttachment {
-                side: PortAnchorSide::Bottom,
-                offset: 0.5,
-            }),
-            target_attachment: Some(EdgeAttachment {
-                side: PortAnchorSide::Top,
-                offset: 0.5,
-            }),
-            label: Some(EdgeLabel {
-                fraction: 0.,
-                offset: Position { x: -432., y: -14. },
-            }),
-        });
-    validate_candidate(&f.project).unwrap();
-    (f, edge, action)
-}
-
-#[test]
-fn state_multiline_label_owns_covered_row_and_node_pixels_but_not_exposed_row() {
-    let (f, edge, action) = multiline_label_fixture();
-    let before = f.project.clone();
-    for zoom in [0.5, 1., 2.] {
-        let canvas = canvas(&f, Tool::Select, zoom); // Nonzero pan and canvas origin.
-        let scene = canvas.scene(&State::default()).unwrap();
-        let label = &scene.routed.edges[&edge].label;
-        let layout = label
-            .state_layout
-            .as_ref()
-            .expect("dedicated State label plan");
-        assert_eq!(layout.title_lines, ["Ready", "for review"]);
-        assert_eq!(
-            layout.summary_lines,
-            ["External · Completion [request_ready]"]
-        );
-        assert_eq!(label.center, Position { x: 440., y: 260. });
-        assert_eq!(label.bounds.size.height, 36.);
-        let node = scene.view.nodes.iter().find(|n| n.element == f.a).unwrap();
-        let row = state_action_rows(&f.project, node)[0].1;
-        assert!(row.contains(Point::new(440., 260.)));
-        assert!(!row.contains(Point::new(440., 272.)));
-        // Second title cell covers a row; summary covers the State header below it.
-        for at in [Point::new(440., 260.), Point::new(440., 272.)] {
-            assert_eq!(canvas.hit(&scene, at), Some(Hit::Transition(edge)));
-            let events = click(&canvas, &mut State::default(), at);
-            assert!(
-                matches!(events.as_slice(), [Event::Select(context, id)]
-                if *context == canvas.context && *id == edge),
-                "{events:?}"
-            );
-        }
-        let exposed = Point::new(200., 260.);
-        assert!(row.contains(exposed));
-        assert_eq!(
-            canvas.hit(&scene, exposed),
-            Some(Hit::Row {
-                placement: node.id,
-                relation: action
-            })
-        );
-        let events = click(&canvas, &mut State::default(), exposed);
-        assert!(
-            matches!(events.as_slice(), [Event::Select(_, id)] if *id == action),
-            "{events:?}"
-        );
-        for (at, object, target) in [
-            (Point::new(440., 272.), edge, Target::Edge(edge)),
-            (
-                exposed,
-                action,
-                Target::StateRow {
-                    placement: node.id,
-                    relation: action,
-                },
-            ),
-        ] {
-            let mut state = State::default();
-            let at = screen(&canvas, at);
-            motion(&canvas, &mut state, at, at);
-            assert!(
-                matches!(input(&canvas, &mut state, mouse::Event::ButtonPressed(mouse::Button::Right), at),
-                Some(Event::ContextMenu { object: actual, selection_target: Some(actual_target), .. })
-                if actual == object && actual_target == target)
-            );
-        }
-    }
-    assert_eq!(
-        f.project, before,
-        "Hit testing and input cannot author layout or semantics"
-    );
-}
-
-#[test]
-fn state_overlapping_label_background_selects_last_painted_even_if_lower_is_selected() {
-    let (mut f, lower, _) = multiline_label_fixture();
-    let upper = Id::from_u128(36_002);
-    let mut relation = f.project.relations[&lower].clone();
-    relation.id = upper;
-    relation.alias = "second_multiline_transition".into();
-    f.project.relations.insert(upper, relation);
-    let mut route = f.project.diagrams[&f.diagram].routes[0].clone();
-    route.edge = upper;
-    // Reverse authored route order: stable edge paint order must still decide.
-    f.project
-        .diagrams
-        .get_mut(&f.diagram)
-        .unwrap()
-        .routes
-        .insert(0, route);
-    validate_candidate(&f.project).unwrap();
-    let mut canvas = canvas(&f, Tool::Select, 1.);
-    canvas.selected = lower;
-    let selection = group_selection(&canvas, [Target::Edge(lower)]);
-    canvas.selection = Some(&selection);
-    let scene = canvas.scene(&State::default()).unwrap();
-    assert_eq!(
-        scene.routed.edges[&lower].label.bounds,
-        scene.routed.edges[&upper].label.bounds
-    );
-    let at = Point::new(440., 260.);
-    assert_eq!(canvas.hit(&scene, at), Some(Hit::Transition(upper)));
-    let events = click(&canvas, &mut State::default(), at);
-    assert!(
-        matches!(events.as_slice(), [Event::Selection(SelectionEvent::Choose(_, Target::Edge(id), Choice::Replace))]
-        if *id == upper),
-        "{events:?}"
-    );
-}
-
-#[test]
-fn state_multiline_label_and_exposed_row_keep_shift_identity_and_refuse_mixed_drag() {
-    let (f, edge, action) = multiline_label_fixture();
-    let before = f.project.clone();
-    let mut canvas = canvas(&f, Tool::Select, 0.75);
-    let row = Target::StateRow {
-        placement: placement(&f, f.a),
-        relation: action,
-    };
-    let selection = group_selection(&canvas, [Target::Edge(edge), row.clone()]);
-    let snapshot = selection
-        .snapshot(selection_context(canvas.context))
-        .unwrap();
-    canvas.selection = Some(&selection);
-    canvas.selected = edge;
-    for (world, target) in [
-        (Point::new(440., 260.), Target::Edge(edge)),
-        (Point::new(200., 260.), row),
-    ] {
-        let at = screen(&canvas, world);
-        let mut state = State::default();
-        assert!(
-            canvas::Program::update(
-                &canvas,
-                &mut state,
-                &canvas::Event::Keyboard(keyboard::Event::ModifiersChanged(
-                    keyboard::Modifiers::SHIFT
-                )),
-                bounds(),
-                mouse::Cursor::Unavailable
-            )
-            .is_none()
-        );
-        motion(&canvas, &mut state, at, at);
-        assert!(
-            matches!(input(&canvas, &mut state, mouse::Event::ButtonPressed(mouse::Button::Left), at),
-            Some(Event::Selection(SelectionEvent::Choose(context, actual, Choice::Toggle)))
-            if context == selection_context(canvas.context) && actual == target)
-        );
-        assert!(state.group.is_none() && state.press.is_none() && state.bend.is_none());
-        assert!(
-            input(
-                &canvas,
-                &mut state,
-                mouse::Event::ButtonReleased(mouse::Button::Left),
-                at
-            )
-            .is_none()
-        );
-
-        let mut state = State::default();
-        motion(&canvas, &mut state, at, at);
-        assert!(
-            input(
-                &canvas,
-                &mut state,
-                mouse::Event::ButtonPressed(mouse::Button::Left),
-                at
-            )
-            .is_none()
-        );
-        assert!(state.group.is_some() && state.press.is_none() && state.bend.is_none());
-        let end = at + Vector::new(30., 20.);
-        motion(&canvas, &mut state, end, end);
-        assert!(canvas.group_preview_key(&state, Some(bounds())).is_none());
-        assert!(
-            matches!(input(&canvas, &mut state, mouse::Event::ButtonReleased(mouse::Button::Left), end),
-            Some(Event::Selection(SelectionEvent::Refuse(actual, _))) if actual == snapshot)
-        );
-        assert!(state.group.is_none() && state.bend_preview.is_none());
-    }
-    assert_eq!(
-        selection
-            .snapshot(selection_context(canvas.context))
-            .unwrap(),
-        snapshot
-    );
-    assert_eq!(f.project, before);
-}
-
-#[test]
-fn state_multiline_label_group_preview_replaces_old_hit_rectangle_and_cancel_restores_it() {
-    let (f, edge, action) = multiline_label_fixture();
-    let before = f.project.clone();
-    let mut canvas = canvas(&f, Tool::Select, 0.75);
-    let selection = group_selection(
-        &canvas,
-        [
-            Target::Placement(placement(&f, f.b)),
-            Target::Placement(placement(&f, f.c)),
-        ],
-    );
-    canvas.selection = Some(&selection);
-    canvas.selected = f.c;
-    let mut state = State::default();
-    let baseline = canvas.scene(&state).unwrap();
-    let old = Point::new(440., 260.);
-    let moved = Point::new(440., 580.);
-    assert_eq!(canvas.hit(&baseline, old), Some(Hit::Transition(edge)));
-    let start = screen(&canvas, Point::new(780., 200.));
-    let end = start + Vector::new(0., 320. * canvas.scale());
-    motion(&canvas, &mut state, start, end);
-    assert!(
-        input(
-            &canvas,
-            &mut state,
-            mouse::Event::ButtonPressed(mouse::Button::Left),
-            end
-        )
-        .is_none()
-    );
-    assert!(state.group.is_some());
-    motion(&canvas, &mut state, end, end);
-    let preview = canvas.scene_with_bounds(&state, Some(bounds())).unwrap();
-    assert_eq!(
-        preview.routed.edges[&edge].label.center,
-        Position { x: 440., y: 580. }
-    );
-    assert_eq!(
-        preview.routed.edges[&edge].label.state_layout,
-        baseline.routed.edges[&edge].label.state_layout
-    );
-    assert_eq!(canvas.hit(&preview, moved), Some(Hit::Transition(edge)));
-    assert_eq!(
-        canvas.hit(&preview, old),
-        Some(Hit::Row {
-            placement: placement(&f, f.a),
-            relation: action
-        })
-    );
-    assert_eq!(f.project, before, "Group preview is derived only");
-    assert!(
-        group_key(
-            &canvas,
-            &mut state,
-            keyboard::key::Named::Escape,
-            keyboard::Modifiers::empty()
-        )
-        .is_none()
-    );
-    assert!(state.group.is_none());
-    let restored = canvas.scene_with_bounds(&state, Some(bounds())).unwrap();
-    assert_eq!(
-        restored.routed.edges[&edge].label,
-        baseline.routed.edges[&edge].label
-    );
-    assert_eq!(canvas.hit(&restored, old), Some(Hit::Transition(edge)));
-    assert_ne!(canvas.hit(&restored, moved), Some(Hit::Transition(edge)));
-    assert!(
-        input(
-            &canvas,
-            &mut state,
-            mouse::Event::ButtonReleased(mouse::Button::Left),
-            end
-        )
-        .is_none()
-    );
-    assert_eq!(f.project, before);
-}
-
-#[test]
-fn state_multiline_label_group_commit_matches_fixed_project_and_one_step_history() {
-    let (f, edge, _) = multiline_label_fixture();
-    let b = placement(&f, f.b);
-    let c = placement(&f, f.c);
-    let before = f.project.clone();
-    // Declare the complete expected model before driving input. No event, preview,
-    // movement planner or resulting document supplies the expected displacement.
-    let mut expected = before.clone();
-    for id in [b, c] {
-        let node = expected
-            .diagrams
-            .get_mut(&f.diagram)
-            .unwrap()
-            .nodes
-            .get_mut(&id)
-            .unwrap();
-        node.position.x += 40.;
-        node.position.y += 40.;
-    }
-    let original_route = before.diagrams[&f.diagram].routes[0].clone();
-    let mut document = Document::from_project(before.clone(), Default::default()).unwrap();
-    let original_source = document.bundle().clone();
-    let mut view_canvas = canvas(&f, Tool::Select, 0.75);
-    let selection = group_selection(&view_canvas, [Target::Placement(b), Target::Placement(c)]);
-    let snapshot = selection
-        .snapshot(selection_context(view_canvas.context))
-        .unwrap();
-    view_canvas.selection = Some(&selection);
-    view_canvas.selected = f.c;
-    let mut state = State::default();
-    let baseline = view_canvas.scene(&state).unwrap();
-    let baseline_label = &baseline.routed.edges[&edge].label;
-    assert_eq!(baseline_label.center, Position { x: 440., y: 260. });
-    // Explicit 0.75 scale: thirty screen pixels is the declared forty world
-    // units. The nonzero pan/origin and ordered pointer helpers stay in play.
-    let start = screen(&view_canvas, Point::new(780., 200.));
-    let end = start + Vector::new(30., 30.);
-    motion(&view_canvas, &mut state, start, end);
-    assert!(
-        input(
-            &view_canvas,
-            &mut state,
-            mouse::Event::ButtonPressed(mouse::Button::Left),
-            end
-        )
-        .is_none()
-    );
-    assert!(state.group.is_some());
-    motion(&view_canvas, &mut state, end, end);
-    let preview = view_canvas
-        .scene_with_bounds(&state, Some(bounds()))
-        .unwrap();
-    let preview_label = &preview.routed.edges[&edge].label;
-    assert_eq!(preview_label.center, Position { x: 480., y: 300. });
-    assert_eq!(
-        preview_label.bounds.position,
-        Position {
-            x: baseline_label.bounds.position.x + 40.,
-            y: baseline_label.bounds.position.y + 40.,
-        }
-    );
-    assert_eq!(preview_label.bounds.size, baseline_label.bounds.size);
-    assert_eq!(preview_label.state_layout, baseline_label.state_layout);
-    assert_eq!(
-        f.project, before,
-        "Preview must not author its derived label"
-    );
-    let event = input(
-        &view_canvas,
-        &mut state,
-        mouse::Event::ButtonReleased(mouse::Button::Left),
-        end,
-    )
-    .unwrap();
-    let Event::Selection(SelectionEvent::Move(actual_snapshot, delta)) = event else {
-        panic!("Expected a group movement event, got {event:?}");
-    };
-    assert_eq!(actual_snapshot, snapshot);
-    assert_eq!(delta, Position { x: 40., y: 40. });
-    assert!(state.group.is_none() && state.press.is_none());
-    assert!(
-        input(
-            &view_canvas,
-            &mut state,
-            mouse::Event::ButtonReleased(mouse::Button::Left),
-            end
-        )
-        .is_none()
-    );
-    // This is the same production snapshot-to-command boundary used by App's
-    // SelectionEvent::Move handler; App admission has its existing separate tests.
-    let ids = crate::app::multiselect::placements(&actual_snapshot).unwrap();
-    let command =
-        oa_core::diagram_edit::translate_placements(document.project(), f.diagram, &ids, delta)
-            .unwrap();
-    document.execute(command).unwrap();
-    assert_eq!(document.project(), &expected);
-    assert_eq!(
-        document.project().diagrams[&f.diagram].routes[0],
-        original_route,
-        "Authored fraction, offset, attachments and empty waypoints remain exact"
-    );
-    let committed = StateCanvas {
-        project: document.project(),
-        ..canvas(&f, Tool::Select, 0.75)
-    }
-    .scene(&State::default())
-    .unwrap();
-    assert_eq!(
-        committed.routed.edges[&edge].label, *preview_label,
-        "Measured settled label, including raw text and every line cell, matches preview"
-    );
-    let edited_source = document.bundle().clone();
-    assert_ne!(
-        edited_source, original_source,
-        "The group move is a real source edit"
-    );
-    assert!(document.undo());
-    assert_eq!(document.project(), &before);
-    assert_eq!(document.bundle(), &original_source);
-    assert!(
-        !document.undo(),
-        "One group release produces exactly one history entry"
-    );
-    assert!(document.redo());
-    assert_eq!(document.project(), &expected);
-    assert_eq!(document.bundle(), &edited_source);
-    assert!(!document.redo());
-    assert_eq!(
-        selection
-            .snapshot(selection_context(view_canvas.context))
-            .unwrap(),
-        snapshot
-    );
-    assert_eq!(f.project, before);
-}

crates/oa-desktop/src/diagram.rs

@@ -1,7 +1,6 @@
 use crate::{
     app::Message,
     route_edit::{self, Context, Event as RouteEvent, Gesture, Handle, point, position},
-    state_label::route_diagram,
     style,
     views::short,
 };
@@ -14,7 +13,7 @@ use iced::{
 };
 use oa_core::{
     projection::{ProjectedNode, ProjectedView, project_view},
-    routing::{RoutedView, StateLabelLayout},
+    routing::{RoutedView, route_diagram},
     *,
 };
 use std::{
@@ -35,9 +34,6 @@ mod lifecycle_tests;
 #[path = "diagram/port_hit_tests.rs"]
 mod port_hit_tests;
 #[cfg(test)]
-#[path = "diagram/state_label_input_tests.rs"]
-mod state_label_input_tests;
-#[cfg(test)]
 #[path = "diagram/view_options_tests.rs"]
 mod view_options_tests;
 
@@ -329,12 +325,7 @@ impl DiagramCanvas<'_> {
             request.bend = Some(index);
             return request;
         }
-        if let Some(edge) = self.hit_state_label(&scene.routed, local) {
-            request.object = edge;
-            request.route_point =
-                routing::project_onto_polyline(&scene.routed.edges[&edge].points, position(world))
-                    .map(|p| p.point);
-        } else if let Some(port) = self.hit_port(&scene.view, local) {
+        if let Some(port) = self.hit_port(&scene.view, local) {
             request.object = port.element;
         } else if let Some(node) = self.hit(&scene.view, local) {
             request.object = self.project.diagrams[&self.diagram].nodes[&node].element;
@@ -433,35 +424,13 @@ impl DiagramCanvas<'_> {
         })
         .map(|(end, owner, _)| (end, owner))
     }
-    fn hit_state_label(&self, routed: &RoutedView, p: Point) -> Option<Id> {
-        let world = self.world(p);
-        // State labels paint after nodes, in BTree order. Hit the frontmost first.
-        routed
-            .edges
-            .values()
-            .rev()
-            .find(|edge| {
-                edge.label.state_layout.is_some()
-                    && !edge.label.text.is_empty()
-                    && Rectangle::new(
-                        point(edge.label.bounds.position),
-                        Size::new(edge.label.bounds.size.width, edge.label.bounds.size.height),
-                    )
-                    .contains(world)
-            })
-            .map(|edge| edge.id)
-    }
     fn hit_label(&self, routed: &RoutedView, p: Point) -> Option<Id> {
-        if let Some(edge) = self.hit_state_label(routed, p) {
-            return Some(edge);
-        }
         let p = self.world(p);
         routed
             .edges
             .values()
             .filter(|edge| {
-                edge.label.state_layout.is_none()
-                    && !edge.label.text.is_empty()
+                !edge.label.text.is_empty()
                     && Rectangle::new(
                         point(edge.label.bounds.position),
                         Size::new(edge.label.bounds.size.width, edge.label.bounds.size.height),
@@ -600,7 +569,7 @@ impl DiagramCanvas<'_> {
                 .as_ref()
                 .filter(|g| g.context == self.context)
             {
-                crate::state_label::route_edge_preview(
+                oa_core::routing::route_edge_preview(
                     self.project,
                     &diagram,
                     &view,
@@ -993,11 +962,8 @@ impl canvas::Program<Message> for DiagramCanvas<'_> {
                         );
                     }
                     let label = &edge.label;
-                    if (if label.state_layout.is_some() {
-                        self.hit_state_label(&scene.routed, p) == Some(edge.id)
-                    } else {
-                        self.hit(view, p).is_none()
-                    }) && !label.text.is_empty()
+                    if self.hit(view, p).is_none()
+                        && !label.text.is_empty()
                         && Rectangle::new(
                             point(label.bounds.position),
                             Size::new(label.bounds.size.width, label.bounds.size.height),
@@ -1016,9 +982,6 @@ impl canvas::Program<Message> for DiagramCanvas<'_> {
                         return Some(Action::capture());
                     }
                 }
-                if let Some(edge) = self.hit_state_label(&scene.routed, p) {
-                    return Some(Action::publish(Message::Select(edge)).and_capture());
-                }
                 if let Some(port) = self.hit_port(view, p) {
                     if self.editable
                         && let Some(owner) = view.nodes.iter().find(|n| n.id == port.owner)
@@ -1385,7 +1348,7 @@ impl canvas::Program<Message> for DiagramCanvas<'_> {
                     Stroke::default().with_color(color).with_width(1.7),
                 );
             }
-            if routed.label.state_layout.is_none() && !routed.label.text.is_empty() {
+            if !routed.label.text.is_empty() {
                 let label = &routed.label;
                 f.fill_rectangle(
                     point(label.bounds.position),
@@ -1524,47 +1487,6 @@ impl canvas::Program<Message> for DiagramCanvas<'_> {
                 f.fill(&Path::circle(center, 1.5), color);
             }
         }
-        // State labels follow nodes, matching the dedicated State canvas layer.
-        for routed in scene.routed.edges.values() {
-            let label = &routed.label;
-            let active = self.selected == routed.id
-                || highlighted.contains(&routed.id)
-                || self.selection_contains(crate::diagram_usage::Target::Edge(routed.id));
-            if label.state_layout.is_some() && !label.text.is_empty() {
-                f.fill_rectangle(
-                    point(label.bounds.position),
-                    Size::new(label.bounds.size.width, label.bounds.size.height),
-                    Color::WHITE,
-                );
-                if let Some(plan) = &label.state_layout {
-                    for (lines, title) in [(&plan.title_lines, true), (&plan.summary_lines, false)]
-                    {
-                        for (index, line) in lines.iter().enumerate() {
-                            let offset = if title {
-                                plan.title_line_position(index)
-                            } else {
-                                plan.summary_line_position(index)
-                            };
-                            f.fill_text(Text {
-                                content: line.clone(),
-                                position: point(label.bounds.position)
-                                    + Vector::new(offset.x, offset.y),
-                                color: if title {
-                                    if active { style::TEAL } else { style::INK }
-                                } else {
-                                    style::MUTED
-                                },
-                                size: StateLabelLayout::FONT_SIZE.into(),
-                                line_height: iced::widget::text::LineHeight::Absolute(
-                                    StateLabelLayout::LINE_HEIGHT.into(),
-                                ),
-                                ..Default::default()
-                            });
-                        }
-                    }
-                }
-            }
-        }
         if let Some(bounds) = self.navigation_focus {
             f.stroke(
                 &Path::rectangle(bounds.position(), bounds.size()),
@@ -2021,34 +1943,6 @@ impl std::fmt::Display for ExportError {
 }
 impl std::error::Error for ExportError {}
 
-fn edge_label_svg(label: &routing::EdgeLabelGeometry) -> String {
-    if label.text.is_empty() {
-        return String::new();
-    }
-    let mut svg = format!(
-        "<rect x=\"{}\" y=\"{}\" width=\"{}\" height=\"{}\" fill=\"white\"/>",
-        label.bounds.position.x,
-        label.bounds.position.y,
-        label.bounds.size.width,
-        label.bounds.size.height
-    );
-    if let Some(plan) = &label.state_layout {
-        for (lines, title) in [(&plan.title_lines, true), (&plan.summary_lines, false)] {
-            for (index, line) in lines.iter().enumerate() {
-                let offset = if title {
-                    plan.title_line_position(index)
-                } else {
-                    plan.summary_line_position(index)
-                };
-                svg.push_str(&format!("<text x=\"{}\" y=\"{}\" dominant-baseline=\"text-before-edge\" xml:space=\"preserve\" font-family=\"sans-serif\" font-size=\"{}\" fill=\"{}\">{}</text>", label.bounds.position.x + offset.x, label.bounds.position.y + offset.y, StateLabelLayout::FONT_SIZE, hex(if title { style::INK } else { style::MUTED }), escape(line)));
-            }
-        }
-    } else {
-        svg.push_str(&format!("<text x=\"{}\" y=\"{}\" text-anchor=\"middle\" dominant-baseline=\"central\" font-family=\"sans-serif\" font-size=\"13\" fill=\"#637487\">{}</text>",label.center.x,label.center.y,escape(&label.text)));
-    }
-    svg
-}
-
 pub fn export_svg(p: &Project, diagram: Id) -> Result<String, ExportError> {
     let d = p
         .diagrams
@@ -2135,8 +2029,8 @@ pub fn export_svg(p: &Project, diagram: Id) -> Result<String, ExportError> {
             .join(" ");
         svg.push_str(&format!("<path data-edge=\"{}\" d=\"{path}\" fill=\"none\" stroke=\"#8999a9\" stroke-width=\"1.5\"{dashed}{arrow}><title>{}</title></path>",edge.id,escape(p.named(edge.id))));
         let label = &route.label;
-        if label.state_layout.is_none() {
-            svg.push_str(&edge_label_svg(label));
+        if !label.text.is_empty() {
+            svg.push_str(&format!("<rect x=\"{}\" y=\"{}\" width=\"{}\" height=\"{}\" fill=\"white\"/><text x=\"{}\" y=\"{}\" text-anchor=\"middle\" dominant-baseline=\"central\" font-family=\"sans-serif\" font-size=\"13\" fill=\"#637487\">{}</text>",label.bounds.position.x,label.bounds.position.y,label.bounds.size.width,label.bounds.size.height,label.center.x,label.center.y,escape(&label.text)));
         }
         if let Some(relation) = p.relations.get(&edge.id) {
             for end in routing::association_end_geometry(relation, route) {
@@ -2195,11 +2089,6 @@ pub fn export_svg(p: &Project, diagram: Id) -> Result<String, ExportError> {
         }
         svg.push_str("</g>");
     }
-    for route in routed.edges.values() {
-        if route.label.state_layout.is_some() {
-            svg.push_str(&edge_label_svg(&route.label));
-        }
-    }
     svg.push_str("</svg>");
     Ok(svg)
 }
@@ -3057,94 +2946,6 @@ mod tests {
         );
         assert!(state.route_drag.is_none());
     }
-    #[test]
-    fn state_svg_paints_separate_escaped_lines_at_shared_layout_origins() {
-        let plan = StateLabelLayout::new(
-            "Ready\r\nfor <review>&",
-            "External\nCompletion [ready]",
-            &|line| line.len() as f32 * 8.0,
-        );
-        let label = routing::EdgeLabelGeometry {
-            text: "External\nCompletion [ready]".into(),
-            fraction: 0.5,
-            anchor: Position { x: 0.0, y: 0.0 },
-            center: Position { x: 0.0, y: 0.0 },
-            bounds: routing::RoutingBounds {
-                position: Position { x: 100.0, y: 200.0 },
-                size: plan.size(),
-            },
-            state_layout: Some(plan),
-        };
-        let svg = edge_label_svg(&label);
-        assert_eq!(svg.matches("<text ").count(), 4);
-        for (y, color, text) in [
-            (200, "#18212c", "Ready"),
-            (212, "#18212c", "for &lt;review&gt;&amp;"),
-            (224, "#4b5968", "External"),
-            (236, "#4b5968", "Completion [ready]"),
-        ] {
-            assert!(svg.contains(&format!("<text x=\"105\" y=\"{y}\" dominant-baseline=\"text-before-edge\" xml:space=\"preserve\" font-family=\"sans-serif\" font-size=\"10\" fill=\"{color}\">{text}</text>")), "{svg}");
-        }
-        assert!(svg.contains("height=\"48\""));
-        assert!(!svg.contains("text-anchor=\"middle\""));
-    }
-
-    #[test]
-    fn state_export_routes_measured_multiline_label_above_nodes() {
-        let mut p = Project::empty();
-        let owner = p
-            .add_element(Kind::Entity, Layer::Oa, "Crew", None)
-            .unwrap();
-        let machine = p
-            .add_element(Kind::StateMachine, Layer::Oa, "Modes", Some(owner))
-            .unwrap();
-        let region = p
-            .add_element(Kind::Region, Layer::Oa, "Main", Some(machine))
-            .unwrap();
-        let a = p
-            .add_element(Kind::State, Layer::Oa, "Source state", Some(region))
-            .unwrap();
-        let b = p
-            .add_element(Kind::State, Layer::Oa, "Target state", Some(region))
-            .unwrap();
-        let edge = p.relate(RelationKind::StateTransition, "Ready\nfor <review>&", a, b);
-        let diagram = Id::new_v4();
-        p.diagrams.insert(
-            diagram,
-            Diagram {
-                id: diagram,
-                alias: "state_export".into(),
-                name: "State export".into(),
-                description: String::new(),
-                layer: Layer::Oa,
-                projection: ProjectionKind::StateMachine { machine },
-                view_options: Default::default(),
-                nodes: BTreeMap::new(),
-                layout: None,
-                routes: vec![],
-            },
-        );
-        p.place(diagram, a, Position { x: 100.0, y: 100.0 });
-        p.place(diagram, b, Position { x: 600.0, y: 100.0 });
-        let view = project_view(&p, diagram);
-        let routed = route_diagram(&p, &p.diagrams[&diagram], &view);
-        let label = &routed.edges[&edge].label;
-        let plan = label.state_layout.as_ref().unwrap();
-        assert_eq!(plan.title_lines, ["Ready", "for <review>&"]);
-        assert_eq!(plan.summary_lines.len(), 1);
-        assert_eq!(label.bounds.size.height, 36.0);
-        let svg = export_svg(&p, diagram).unwrap();
-        let label_svg = edge_label_svg(label);
-        assert!(svg.ends_with(&format!("{label_svg}</svg>")));
-        assert!(svg.find("Target state</text>").unwrap() < svg.find("Ready</text>").unwrap());
-        assert!(svg.contains("for &lt;review&gt;&amp;</text>"));
-        assert!(svg.contains(&format!(
-            "x=\"{}\" y=\"{}\" dominant-baseline=\"text-before-edge\"",
-            label.bounds.position.x + 5.0,
-            label.bounds.position.y + 24.0
-        )));
-    }
-
     #[test]
     fn routed_svg_has_same_polyline_label_and_bounds_as_canvas_scene() {
         let (mut p, diagram, edge) = route_fixture();

crates/oa-desktop/src/diagram/multiselect.rs

@@ -196,27 +196,8 @@ impl DiagramCanvas<'_> {
         let pointer = cursor.position()?;
         let local = Point::new(pointer.x - bounds.x, pointer.y - bounds.y);
         let scene = self.scene(state);
-        let world = self.world(local);
-        // Preserve foreground selected handles without bypassing Shift or the
-        // mixed-group admission/refusal lifecycle below.
-        let state_handle = self.project.diagrams[&self.diagram]
-            .projection
-            .state_machine()
-            .is_some()
-            && scene.routed.edges.get(&self.selected).is_some_and(|edge| {
-                !edge.custom_suspended
-                    && (self.attachment_at(&scene, world).is_some()
-                        || edge
-                            .pins
-                            .iter()
-                            .any(|pin| world.distance(point(*pin)) <= 8. / self.zoom))
-            });
         let target = if self.allocation_surface() {
             self.allocation_press_target(&scene, local)
-        } else if state_handle {
-            Some(Target::Edge(self.selected))
-        } else if let Some(id) = self.hit_state_label(&scene.routed, local) {
-            Some(Target::Edge(id))
         } else if let Some(port) = self.hit_port(&scene.view, local) {
             Some(Target::Port {
                 port: port.element,

crates/oa-desktop/src/diagram/state_label_input_tests.rs

@@ -1,230 +0,0 @@
-use super::*;
-use crate::{
-    app::multiselect::{Choice, Event, context},
-    diagram_selection::Selection,
-    diagram_usage::Target,
-};
-
-fn fixture() -> (Project, Id, Id, Id, Id) {
-    let mut p = Project::empty();
-    let owner = p
-        .add_element(Kind::Entity, Layer::Oa, "Crew", None)
-        .unwrap();
-    let machine = p
-        .add_element(Kind::StateMachine, Layer::Oa, "Modes", Some(owner))
-        .unwrap();
-    let region = p
-        .add_element(Kind::Region, Layer::Oa, "Main", Some(machine))
-        .unwrap();
-    let a = p
-        .add_element(Kind::State, Layer::Oa, "A", Some(region))
-        .unwrap();
-    let b = p
-        .add_element(Kind::State, Layer::Oa, "B", Some(region))
-        .unwrap();
-    let mut edges = [
-        p.relate(RelationKind::StateTransition, "Ready\nfor review", a, b),
-        p.relate(RelationKind::StateTransition, "Ready\nfor review", a, b),
-    ];
-    edges.sort();
-    let diagram = Id::new_v4();
-    p.diagrams.insert(
-        diagram,
-        Diagram {
-            id: diagram,
-            alias: "state_input".into(),
-            name: "State input".into(),
-            description: String::new(),
-            layer: Layer::Oa,
-            projection: ProjectionKind::StateMachine { machine },
-            view_options: Default::default(),
-            nodes: BTreeMap::new(),
-            layout: None,
-            routes: edges
-                .iter()
-                .map(|edge| EdgeRoute {
-                    edge: *edge,
-                    source_attachment: None,
-                    target_attachment: None,
-                    waypoints: vec![Position { x: 200., y: 150. }],
-                    label: None,
-                })
-                .collect(),
-        },
-    );
-    let node = p.place(diagram, a, Position { x: 100., y: 100. });
-    p.place(diagram, b, Position { x: 650., y: 100. });
-    let routed = route_diagram(&p, &p.diagrams[&diagram], &project_view(&p, diagram));
-    for route in &mut p.diagrams.get_mut(&diagram).unwrap().routes {
-        let label = &routed.edges[&route.edge].label;
-        route.label = Some(EdgeLabel {
-            fraction: label.fraction,
-            offset: Position {
-                x: 200. - label.anchor.x,
-                y: 150. - label.anchor.y,
-            },
-        });
-    }
-    (p, diagram, edges[0], edges[1], node)
-}
-
-fn canvas(p: &Project, diagram: Id, selected: Id, zoom: f32) -> DiagramCanvas<'_> {
-    DiagramCanvas {
-        selection: None,
-        project: p,
-        view_index: None,
-        diagram,
-        selected,
-        navigation_focus: None,
-        zoom,
-        pan: Vector::new(100., 100.),
-        context: Context {
-            document: p.id,
-            diagram,
-            revision: 0,
-            epoch: 0,
-        },
-        selected_bend: None,
-        selected_attachment: None,
-        editable: true,
-        placing: false,
-        connection: None,
-        allocation: None,
-    }
-}
-fn screen(canvas: &DiagramCanvas<'_>, y: f32) -> Point {
-    Point::new(
-        200. * canvas.zoom + canvas.pan.x,
-        y * canvas.zoom + canvas.pan.y,
-    )
-}
-fn pointer(
-    canvas: &DiagramCanvas<'_>,
-    state: &mut State,
-    event: mouse::Event,
-    at: Point,
-) -> Option<Message> {
-    canvas::Program::update(
-        canvas,
-        state,
-        &canvas::Event::Mouse(event),
-        Rectangle::with_size(Size::new(1800., 1200.)),
-        mouse::Cursor::Available(at),
-    )
-    .and_then(|a| a.into_inner().0)
-}
-
-#[test]
-fn state_generic_front_label_beats_node_and_selected_back_label_at_three_zooms() {
-    for zoom in [0.5, 1., 1.5] {
-        let (p, diagram, low, high, _) = fixture();
-        let mut canvas = canvas(&p, diagram, low, zoom);
-        // Ten world pixels below center remains on both labels but avoids bends.
-        let at = screen(&canvas, 160.);
-        let scene = canvas.scene(&State::default());
-        assert!(canvas.hit(&scene.view, at).is_some());
-        assert_eq!(canvas.hit_label(&scene.routed, at), Some(high));
-        // Selected bends have a screen radius: move further down at half zoom.
-        let at = if zoom == 0.5 {
-            screen(&canvas, 167.)
-        } else {
-            at
-        };
-        assert_eq!(
-            canvas
-                .context_request(
-                    &State::default(),
-                    at,
-                    Rectangle::with_size(Size::new(1800., 1200.))
-                )
-                .object,
-            high
-        );
-        let mut state = State::default();
-        assert!(
-            matches!(pointer(&canvas, &mut state, mouse::Event::ButtonPressed(mouse::Button::Left), at), Some(Message::Select(id)) if id == high)
-        );
-        assert!(state.drag.is_none() && state.route_drag.is_none());
-        canvas.selected = high;
-        let mut state = State::default();
-        pointer(
-            &canvas,
-            &mut state,
-            mouse::Event::ButtonPressed(mouse::Button::Left),
-            at,
-        );
-        assert!(matches!(
-            state.route_drag.as_ref().map(|g| &g.handle),
-            Some(Handle::Label { .. })
-        ));
-        canvas.editable = false;
-        let mut state = State::default();
-        assert!(
-            matches!(pointer(&canvas, &mut state, mouse::Event::ButtonPressed(mouse::Button::Left), at), Some(Message::Select(id)) if id == high)
-        );
-        assert!(state.drag.is_none() && state.route_drag.is_none());
-    }
-}
-
-#[test]
-fn state_generic_shift_label_and_handle_keep_exact_targets_and_mixed_refusal() {
-    let (p, diagram, low, high, node) = fixture();
-    let base = canvas(&p, diagram, low, 1.);
-    let mut single_state = State::default();
-    assert!(
-        matches!(pointer(&base, &mut single_state, mouse::Event::ButtonPressed(mouse::Button::Left), screen(&base, 150.)), Some(Message::Route(RouteEvent::SelectBend(id, 0))) if id == low)
-    );
-    assert!(matches!(
-        single_state.route_drag.as_ref().map(|g| &g.handle),
-        Some(Handle::Bend(0))
-    ));
-    let mut selection = Selection::new(context(base.context).scope);
-    selection.add(Target::Edge(low), |_| true);
-    selection.add(Target::Placement(node), |_| true);
-    let canvas = DiagramCanvas {
-        selection: Some(&selection),
-        ..base
-    };
-    for (y, expected) in [(160., high), (150., low)] {
-        let mut state = State {
-            modifiers: iced::keyboard::Modifiers::SHIFT,
-            ..State::default()
-        };
-        assert!(
-            matches!(pointer(&canvas, &mut state, mouse::Event::ButtonPressed(mouse::Button::Left), screen(&canvas,y)), Some(Message::DiagramSelection(Event::Choose(_, Target::Edge(id), Choice::Toggle))) if id == expected)
-        );
-        assert!(state.drag.is_none() && state.route_drag.is_none());
-    }
-    let mut state = State::default();
-    let at = screen(&canvas, 150.);
-    assert_eq!(
-        canvas
-            .context_request(&state, at, Rectangle::with_size(Size::new(1800., 1200.)))
-            .bend,
-        Some(0)
-    );
-    pointer(
-        &canvas,
-        &mut state,
-        mouse::Event::ButtonPressed(mouse::Button::Left),
-        at,
-    );
-    assert!(state.group.is_some() && state.route_drag.is_none());
-    let moved = at + Vector::new(20., 20.);
-    pointer(
-        &canvas,
-        &mut state,
-        mouse::Event::CursorMoved { position: moved },
-        moved,
-    );
-    assert!(matches!(
-        pointer(
-            &canvas,
-            &mut state,
-            mouse::Event::ButtonReleased(mouse::Button::Left),
-            moved
-        ),
-        Some(Message::DiagramSelection(Event::Refuse(_, _)))
-    ));
-    assert!(state.route_drag.is_none() && state.drag.is_none());
-}

crates/oa-desktop/src/diagram/work_drag.rs

@@ -6,7 +6,7 @@ impl DiagramCanvas<'_> {
     pub(crate) fn work_dirty_point(&self, bounds: Rectangle, screen: Point) -> bool {
         let diagram = &self.project.diagrams[&self.diagram];
         let view = self.projected(diagram);
-        let routed = crate::state_label::route_diagram(self.project, diagram, &view);
+        let routed = routing::route_diagram(self.project, diagram, &view);
         self.work_dirty_press(
             &view,
             &routed,

crates/oa-desktop/src/diagram_usage.rs

@@ -327,7 +327,7 @@ pub(crate) fn saved_usages_for(p: &Project, subject: Id, only_diagram: Option<Id
                     "state machine view"
                 }
                 .into(),
-                bounds: routed_bounds(crate::state_label::route_diagram(p, diagram, &view).bounds),
+                bounds: routed_bounds(routing::route_diagram(p, diagram, &view).bounds),
             });
         }
         for node in &view.nodes {
@@ -407,7 +407,7 @@ pub(crate) fn saved_usages_for(p: &Project, subject: Id, only_diagram: Option<Id
             }
         }
         if view.edges.iter().any(|edge| edge.id == subject)
-            && let Some(edge) = crate::state_label::route_diagram(p, diagram, &view)
+            && let Some(edge) = routing::route_diagram(p, diagram, &view)
                 .edges
                 .get(&subject)
         {

crates/oa-desktop/src/guide.rs

@@ -310,7 +310,7 @@ fn article(topic: Topic) -> Article {
                                 "Use the diagram selector or + View to work with a focused diagram. View properties edits its name, perspective, projection and Saved view visibility. Apply changes commits the view settings.",
                                 "Choose Containment for semantic children, Architecture · allocated work for responsibilities, Functional dataflow for work and exchanges, or Missions & capabilities for outcomes. All relationships explores one layer; OA ↔ SA traceability can show placed elements from both layers and their correspondence lines alongside ordinary relationships.",
                                 "Select an element and edit Semantic parent to change ownership. Use the Allocation palette tool to connect a performer to existing unallocated leaf work in Containment. The relationship can appear as a line there; Architecture · allocated work shows responsibility through nesting instead. Saved visibility filters can hide a line without removing the relationship.",
-                                "Scroll to zoom and use Fit to frame the current view. In allocated-work views, dragging work changes its assignment and placement together. Choose Arrange next drag or press Alt+A to move work without changing responsibility for that one drag; Escape cancels the armed action. Auto-layout arranges the whole view. Export SVG produces a shareable view.",
+                                "Scroll to zoom and use Fit to frame the current view. In allocated-work views, dragging work changes its assignment and placement together. Choose Arrange next drag or press Alt+A to move work without changing responsibility for that one drag; Escape cancels the armed action. Auto-layout arranges the view; see Route connections around the model for its bend and label reset rules. Export SVG produces a shareable view.",
                                 "Select a diagram node to access Placement, Fold / unfold and Hide. With the canvas focused, Delete hides its placement; Shift+Delete asks to remove the model element. Other views retain a hidden element. Undo restores either change.",
                             ],
                         ),
@@ -357,7 +357,9 @@ fn article(topic: Topic) -> Article {
                             &[
                                 "Select an architecture connection and drag a segment to add a bend. Right-click a line for Add bend here; right-click a circle for Remove bend. With the canvas focused, Insert adds a bend and Delete removes the selected bend. Drag the label independently. Escape cancels a gesture; Undo reverses one completed drag. Shift+F10 opens the selected diagram item's context menu; use arrow keys and Enter to choose an action.",
                                 "Automatic orthogonal routing avoids cards and container headers where space permits. Amber connections need attention: move an obstructing element or a bend. In Select / move, drag a port to any border of its owner. Manual positions are per diagram; right-click Reset automatic position restores connection-aware placement. Ports remain attached to their actual owners. Manual routes are saved separately for each diagram and appear in source, API and SVG export.",
-                                "Select a connection and drag a square endpoint handle along its element boundary to move its attachment in this view without changing what it connects. If handles overlap, right-click the selected connection or use its Actions menu and choose Move source attachment or Move target attachment, then drag the handle. Connections to semantic ports retain their port attachment; move the port instead. Reset source attachment or Reset target attachment restores that end's automatic placement while preserving the other end, pins and label. Reset routing clears all these route overrides in this view. Auto-layout preserves pins. Moving one endpoint keeps pins fixed; moving a container carrying both endpoints translates their pins. When folding promotes an endpoint, expand it again to resume and edit its saved route.",
+                                "Select a connection and drag a square endpoint handle along its element boundary to move its attachment in this view without changing what it connects. If handles overlap, right-click the selected connection or use its Actions menu and choose Move source attachment or Move target attachment, then drag the handle. Connections to semantic ports retain their port attachment; move the port instead. Reset source attachment or Reset target attachment restores that end's automatic placement while preserving the other end, pins and label. Reset routing clears all these route overrides, including both attachments, in this view.",
+                                "Auto-layout (Arrange elements) replaces saved bends and label positions on visible connections with their actual endpoints shown; attachment preferences and port anchors stay saved. Hidden or folded routes keep their overrides, though pins can move with their endpoint owners during arrangement. Undo restores the prior arrangement.",
+                                "During ordinary movement, moving one endpoint keeps pins fixed; moving a container carrying both endpoints translates their pins. When folding promotes an endpoint, expand it again to resume and edit its saved route.",
                             ],
                         ),
                         explain(

crates/oa-desktop/src/main.rs

@@ -34,7 +34,6 @@ mod source_navigation;
 mod source_rename;
 mod source_tree;
 mod source_workspace;
-mod state_label;
 mod style;
 #[cfg(test)]
 mod tests;

crates/oa-desktop/src/state_label.rs

@@ -1,81 +0,0 @@
-//! Desktop routing uses the same font/shaping defaults as canvas text.
-use iced::advanced::{
-    graphics::text::Paragraph,
-    text::{self, Paragraph as _},
-};
-use oa_core::{
-    Diagram, Id, Project,
-    projection::ProjectedView,
-    routing::{self, RoutedView, StateLabelLayout},
-};
-
-fn measure_line(line: &str) -> f32 {
-    let defaults = iced::widget::canvas::Text::default();
-    Paragraph::with_text(text::Text {
-        content: line,
-        bounds: iced::Size::INFINITE,
-        size: StateLabelLayout::FONT_SIZE.into(),
-        line_height: text::LineHeight::Absolute(StateLabelLayout::LINE_HEIGHT.into()),
-        font: defaults.font,
-        align_x: defaults.align_x,
-        align_y: defaults.align_y,
-        shaping: defaults.shaping,
-        wrapping: text::Wrapping::None,
-    })
-    .min_width()
-}
-
-pub fn route_diagram(project: &Project, diagram: &Diagram, view: &ProjectedView) -> RoutedView {
-    routing::route_diagram_with_state_label_measurement(project, diagram, view, &measure_line)
-}
-
-pub fn route_edge_preview(
-    project: &Project,
-    diagram: &Diagram,
-    view: &ProjectedView,
-    baseline: &RoutedView,
-    edge: Id,
-) -> RoutedView {
-    routing::route_edge_preview_with_state_label_measurement(
-        project,
-        diagram,
-        view,
-        baseline,
-        edge,
-        &measure_line,
-    )
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn wide_glyphs_use_shaped_width_instead_of_character_estimate() {
-        let wide = "W".repeat(40);
-        let narrow = "i".repeat(40);
-        let width = measure_line(&wide);
-        assert!(width > measure_line(&narrow) * 2.0);
-        assert!(width > 40.0 * 7.0);
-        let plan = StateLabelLayout::new(&wide, &wide, &measure_line);
-        assert_eq!(
-            plan.size().width,
-            width + 2.0 * StateLabelLayout::HORIZONTAL_PADDING
-        );
-    }
-
-    #[test]
-    fn unicode_fallback_and_combining_text_have_finite_measured_bounds() {
-        for line in ["漢字 Ελληνικά العربية", "e\u{301} cafe\u{301}", "🙂 🧭"]
-        {
-            let width = measure_line(line);
-            assert!(width.is_finite() && width > 0.0, "{line:?}: {width}");
-            let plan = StateLabelLayout::new(line, line, &measure_line);
-            assert_eq!(
-                plan.size().width,
-                width + 2.0 * StateLabelLayout::HORIZONTAL_PADDING
-            );
-        }
-        assert!(measure_line("e\u{301}") < measure_line("ee"));
-    }
-}

crates/oa-desktop/src/tests.rs

@@ -1692,3 +1692,161 @@ fn adding_bend_between_close_ports_stays_outside_owner_clearance() {
         }]
     );
 }
+
+fn arrange_reset_fixture() -> (Project, Id, Id) {
+    let mut project = Project::empty();
+    let source = project.add(Kind::Activity, "Send report", 20., 70.);
+    let target = project.add(Kind::Activity, "Receive report", 650., 200.);
+    let edge = project.relate(RelationKind::Interaction, "Report", source, target);
+    let diagram = project.ensure_diagram(Layer::Oa);
+    project
+        .diagrams
+        .get_mut(&diagram)
+        .unwrap()
+        .routes
+        .push(EdgeRoute {
+            edge,
+            source_attachment: Some(EdgeAttachment {
+                side: PortAnchorSide::Bottom,
+                offset: 0.25,
+            }),
+            target_attachment: Some(EdgeAttachment {
+                side: PortAnchorSide::Top,
+                offset: 0.75,
+            }),
+            waypoints: vec![Position { x: 400., y: 500. }],
+            label: Some(EdgeLabel {
+                fraction: 0.25,
+                offset: Position { x: 11., y: 7. },
+            }),
+        });
+    (project, diagram, source)
+}
+
+#[test]
+fn arrange_reset_document_preserves_multifile_comments_and_exact_undo_redo_reopen() {
+    use crate::document::Document;
+    use oa_core::source_project::{self, ProjectLimits};
+    let (project, diagram, _) = arrange_reset_fixture();
+    let mut bundle = source_project::format_bundle(&project);
+    assert!(
+        bundle.files.len() > 1,
+        "This must exercise a real include closure"
+    );
+    for (path, text) in &mut bundle.files {
+        *text = format!("// Keep exact authored module: {path}\r\n{text}");
+    }
+    let mut document = Document::from_bundle(bundle, ProjectLimits::default()).unwrap();
+    document.mark_saved(document.snapshot());
+    let before = document.snapshot();
+    let original_route = before.decoded.project.diagrams[&diagram].routes[0].clone();
+    document.execute(Command::Layout(diagram)).unwrap();
+    let after = document.snapshot();
+    let routes = &after.decoded.project.diagrams[&diagram].routes;
+    let mut expected_route = original_route;
+    expected_route.waypoints.clear();
+    expected_route.label = None;
+    assert_eq!(routes, &vec![expected_route]);
+    let mut outside = after.decoded.project.clone();
+    outside
+        .diagrams
+        .insert(diagram, before.decoded.project.diagrams[&diagram].clone());
+    assert_eq!(outside, before.decoded.project);
+    let affected: std::collections::BTreeSet<_> = std::iter::once(diagram)
+        .chain(
+            before.decoded.project.diagrams[&diagram]
+                .nodes
+                .keys()
+                .copied(),
+        )
+        .map(|id| document.compiled().index.declarations[&id].path.clone())
+        .collect();
+    for (path, text) in &before.bundle.files {
+        assert!(
+            after.bundle.files[path].contains(&format!("// Keep exact authored module: {path}"))
+        );
+        if !affected.contains(path) {
+            assert_eq!(
+                &after.bundle.files[path], text,
+                "Unrelated accepted bytes: {path}"
+            );
+        }
+    }
+    assert!(document.undo());
+    assert_eq!(document.bundle(), &before.bundle);
+    assert_eq!(document.project(), &before.decoded.project);
+    assert!(!document.dirty());
+    assert!(document.redo());
+    assert_eq!(document.bundle(), &after.bundle);
+    assert_eq!(document.project(), &after.decoded.project);
+    let reopened = Document::from_bundle(after.bundle.clone(), ProjectLimits::default()).unwrap();
+    assert_eq!(reopened.bundle(), &after.bundle);
+    assert_eq!(reopened.project(), &after.decoded.project);
+}
+
+#[test]
+fn arrange_reset_pending_valid_property_has_separate_apply_and_layout_history() {
+    let (project, diagram, source) = arrange_reset_fixture();
+    let mut control = App::with_project(project.clone());
+    send(&mut control, Message::Select(source));
+    send(
+        &mut control,
+        Message::Field("/name".into(), "Revised sender".into()),
+    );
+    send(&mut control, Message::Apply);
+    let applied_project = control.project().clone();
+    let applied_bundle = control.document.bundle().clone();
+    assert_eq!(applied_project.elements[&source].name, "Revised sender");
+    assert_eq!(
+        applied_project.diagrams[&diagram].routes,
+        project.diagrams[&diagram].routes
+    );
+    let mut app = App::with_project(project);
+    let before_project = app.project().clone();
+    let before_bundle = app.document.bundle().clone();
+    send(&mut app, Message::Select(source));
+    send(
+        &mut app,
+        Message::Field("/name".into(), "Revised sender".into()),
+    );
+    send(&mut app, Message::Command(Command::Layout(diagram)));
+    assert_eq!(app.project().elements[&source].name, "Revised sender");
+    assert!(
+        app.project().diagrams[&diagram].routes[0]
+            .waypoints
+            .is_empty()
+    );
+    assert!(app.project().diagrams[&diagram].routes[0].label.is_none());
+    let arranged_project = app.project().clone();
+    let arranged_bundle = app.document.bundle().clone();
+    send(&mut app, Message::Undo);
+    assert_eq!(app.project(), &applied_project);
+    assert_eq!(app.document.bundle(), &applied_bundle);
+    send(&mut app, Message::Undo);
+    assert_eq!(app.project(), &before_project);
+    assert_eq!(app.document.bundle(), &before_bundle);
+    send(&mut app, Message::Redo);
+    assert_eq!(app.project(), &applied_project);
+    assert_eq!(app.document.bundle(), &applied_bundle);
+    send(&mut app, Message::Redo);
+    assert_eq!(app.project(), &arranged_project);
+    assert_eq!(app.document.bundle(), &arranged_bundle);
+}
+
+#[test]
+fn arrange_reset_invalid_property_blocks_layout_without_losing_draft_or_accepted_bytes() {
+    let (project, diagram, _) = arrange_reset_fixture();
+    let node = *project.diagrams[&diagram].nodes.keys().next().unwrap();
+    let mut app = App::with_project(project);
+    send(&mut app, Message::Select(node));
+    let before_project = app.project().clone();
+    let before_bundle = app.document.bundle().clone();
+    let revision = app.document.revision();
+    send(&mut app, Message::Field("/position/x".into(), "-".into()));
+    send(&mut app, Message::Command(Command::Layout(diagram)));
+    assert_eq!(app.project(), &before_project);
+    assert_eq!(app.document.bundle(), &before_bundle);
+    assert_eq!(app.document.revision(), revision);
+    assert!(!app.document.can_undo());
+    assert_eq!(app.draft.as_ref().unwrap().inputs["/position/x"].raw, "-");
+}

docs/language.rst

@@ -1255,6 +1255,55 @@ translates pins when both actual endpoint owners move by the same delta; label
 offsets remain relative. Raw ``EditNode`` and source position edits are exact
 record edits and do not implicitly translate pins.
 
+Explicit ``Layout(diagram)`` (Auto-layout / Arrange elements) is an exception to
+route-override preservation. Immediately before this operation changes geometry,
+it MUST determine eligibility from the staged Project's ordinary filtered
+projection. An edge is eligible only if it is visible, both actual endpoint-owner
+placements exist, both projected owner nodes exist, and its projected source and
+target equal those actual owners in stored orientation. A semantic Port belongs
+to its actual owning placement; hiding its marker does not make the edge
+ineligible. An endpoint promoted to a folded ancestor does. Missing owners MUST
+NOT be inferred. In a Batch, this input includes preceding staged operations;
+determining eligibility MUST NOT introduce separate validation of a batch prefix.
+
+For each existing eligible route entry, Layout MUST clear ``waypoints`` and the
+entire ``label`` override (both fraction and offset). It MUST retain the entry,
+its list position, edge identity, and both attachment values, including dormant
+attachments at semantic ports. Empty and attachments-only entries MUST NOT be
+removed. Layout MUST NOT create route entries merely to record generated elbows
+or automatic label placement. Node port-anchor records remain exact, although
+moving or resizing their owners can change their physical positions.
+
+Ineligible routes, including hidden, filtered and promoted edges, MUST NOT be
+reset. Their labels, attachments, identities and list order remain exact. Their
+waypoints follow the existing movement rule: translate only when both actual
+endpoint-owner placements receive the same nonzero original-to-final delta,
+subject also to the existing State boundary movement rule. For a State Entry/Exit
+endpoint whose owning State boundary has a placement, that boundary placement
+must move with the same delta before the stored pins translate. Otherwise retain
+the waypoint values.
+Promotion to a visible ancestor alone does not authorize translation. Eligibility
+limits route reset, not placement scope: ordinary Layout may still reposition or
+resize hidden and folded descendant placements. Other diagrams remain unchanged.
+
+Placement changes and eligible resets form one atomic Layout mutation. A changed
+standalone Layout creates one history entry; Layout within Batch or execute_many
+shares the enclosing transaction's entry, even when that transaction contains
+several Layout operations. Validate the complete candidate through the ordinary
+transaction path. Rejection leaves the accepted Project and history unchanged;
+an identical enclosing transaction creates no entry and preserves Redo. Undo
+restores the pre-transaction placement and route records. A separately applied
+desktop property draft retains its own history entry; Layout does not merge it.
+
+This exception does not change ordinary dragging, group movement, reconnect,
+folding, filtering, raw ``EditNode`` or source position edits. Reset routing
+remains the distinct whole-entry removal operation, including both attachments.
+Internal State transitions have no external edge eligible for reset. Process
+generated topology is unchanged; saved Scenario layout retains its dedicated
+operation and rejects this Layout command. Automatic elbows remain derived;
+resetting constraints does not guarantee an intersection-free or collision-free
+arrangement.
+
 This is an additive schema-3 field. Earlier schema-3 JSON/source that omits
 ``routes`` loads as an empty list. Frozen schema-1 and schema-2 readers do not
 accept this new field; migration creates empty route lists. Source projects keep

harness/DECISIONS.md

@@ -499,8 +499,25 @@ map](edge-attachments-20260922.md) records alternatives, lifecycle rules,
 independent falsifiers, evaluators and the Process/Scenario applicability limits.
 This is branch-specific work; it does not establish an integrated release.
 
-## External State transition label measurement — 2026-09-24
+## Explicit Arrange resets visible authored geometry — 2026-09-25
 
-Issue #36's reproduced collision comes from a two-line title painted in space reserved for one line, with bounds sized from its summary. Adopt one derived hard-line plan measured before routing, shared by paint/hit/preview/focus/SVG. Preserve raw excerpt provenance, authored centers/routes and model/source bytes. Desktop measures with the canvas Paragraph defaults; core retains an explicit approximate fallback. Opaque State label backgrounds own covered hits in reverse paint order while selected handles and group admission retain precedence.
+Branch-specific candidate for issue #32, based on released715036e; not an integrated
+release checkpoint. Explicit Layout clears pins and the complete label override
+for existing projected routes whose displayed owners equal their actual placed
+owners. Freeze that eligibility before geometry changes, including at the operation's
+position in a Batch. Preserve route entries, order, attachments and semantic/manual
+port choices. Preserve existing equal-actual-owner translation for ineligible
+routes and retain ordinary movement behavior. Keep whole Reset routing distinct.
 
-The [contract](state-label-layout-contract.md) is authoritative for exact rules and alternatives. The [verification](experiments/state-label-layout-20260924/README.md) records the width-estimate and generic-hit falsifiers, independent review, scoped Windows outcomes, restored-window input limitation and reasons not to infer universal font or collision-free layout support. Revisit if new ink-overhang, shaping, routing-cost, or authored-occlusion evidence invalidates the bounded design. Dynamic node/row sizing and source/model changes were deliberately excluded.
+This narrowly amends the former pin-preserving Layout contract so an explicit
+arrangement can recover automatic route/label placement without deleting endpoint
+choices. Clearing the whole label record avoids retaining a stale authored fraction;
+it does not guarantee better geometry. The routing and node-placement algorithms
+remain unchanged. More aggressive experimental routing candidates were not adopted
+because independent scenes exposed tradeoffs and regressions.
+
+[Results and evidence](experiments/arrange-reset-20260925/results.md) bind the
+contract, source/history tests, strict Clippy and expanded/folded native save/reopen
+acceptance to their actual code pins. Residual crossing/layout quality and viewport/
+guide discoverability remain outside this bounded acceptance. Gitea owns live
+publication and integration status; this record does not close issue #32.

harness/STATE.md

@@ -1,12 +1,4 @@
-# Verified branch checkpoint — State label follow-up
-
-This branch's code through **70bdcdf8fec1728e971cd90ad7f79a1df99777ff** corrects external State transition title/summary layout and measured label hit areas. The [contract](state-label-layout-contract.md) and [verification](experiments/state-label-layout-20260924/README.md) identify exact source, commands, native fixtures, original evidence and limits. Windows focused core68, full desktop1540/7 existing ignores, formatting, strict workspace/all-target Clippy, builds, and six maximized-window B/W/U Save/reopen checks pass. Restored-window coordinate input remains an explicit native-test limitation. This is branch-specific evidence, not merged-main or complete-application acceptance; live integration status is [issue36](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/issues/36).
-
-The separate [September24 integrated prerelease](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.integrated.20260924) is published at **715036e132677dd2bc2fb37ed316d93dc9987aec** with owner publication receipt **76acfb11085ae36bd65971f5f1cf34f45d362ada**. The label follow-up does not replace that tag or its artifacts. Linux remains excluded. Later private analysis branch status must be read from Gitea and that branch, not inferred from this checkpoint.
-
-## Historical source checkpoint inherited from715036e — 2026-09-24 UTC
-
-The source-preparation statements below describe that earlier checkpoint. Its then-pending prerelease gates were subsequently completed in the publication linked above; its other scoped evidence retains its original code versions.
+# Integrated prerelease source checkpoint — 2026-09-24 UTC
 
 This branch assembles peer contributions for the Windows prerelease in issue37.
 [PROJECT_GOAL.md](../PROJECT_GOAL.md) remains authoritative. The complete OA/SA

harness/experiments/arrange-reset-20260925/export-checker-review.md

@@ -0,0 +1,15 @@
+# Supplemental export checkpoint: source review
+
+Prepared `.local/arrange-reset-export-checkpoint-20260925.py`, SHA256 `5bcd8a568d5318dd62217c1e0b35538b22e34403c9727eee8814a5d0ec5a899f`. AST parsing passed; script/oracle not executed. This is an author source check, not independent runtime acceptance.
+
+Example after the parent observes JSON export to a new destination:
+
+```text
+python .local/arrange-reset-export-checkpoint-20260925.py --root TRIAL --actual TRIAL/working/expanded-after.json --name expanded-after-export --case expanded --expected after
+```
+
+Use fresh names/files for Undo (`--expected original`) and Redo (`--expected after`). The script requires an existing JSON directly inside the admitted working directory and refuses the two original imported filenames. It does not create an export or establish when/how that file was created; the parent's GUI observation supplies that evidence.
+
+It loads only the exact reviewed staged common helper, then reuses admitted stage/source/package/baseline checks. The supplemental script is explicitly **not stage-admitted**: its own exact file identity appears in the checkpoint receipt and oracle invocation bindings. It snapshots the export without rewriting it, invokes the preserved same-candidate `--compare` oracle, and checks the export, entire working inventory, supplemental script and admitted inputs afterward. Fresh checkpoint directories and receipts preserve attempts; failure quarantines the trial through the existing sentinel convention. No staged tool, manifest, original trial file or source checkout is changed.
+
+An accepted receipt proves complete typed Project equality for the captured JSON. It does not establish native canonical-project Save, clean-document state, UI action cause, source-bundle byte equality or fresh-process reopening. JSON Save As is export-only here; parent must separately observe canonical Save and reopening. The earlier refused overwrite remains a recorded UI observation, not a successful save.

harness/experiments/arrange-reset-20260925/native-review.md

@@ -0,0 +1,34 @@
+# Arrange reset native outcome independent review
+
+**Accept the bounded expanded/folded Arrange-reset workflow demonstrated here. No material blocker found in the reviewed outcome.** This is Windows native wiring, preservation, history, source-save and reopen evidence at `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed`, not full issue32 layout-quality acceptance or J/L router adoption.
+
+Reviewed all18 observation JSON notes and independently viewed all18 corresponding full-window PNGs with view_image. Read all eight checkpoint receipts/oracle outputs and both final close receipts. No GUI action, compiler, model helper or checkpoint rerun by reviewer.
+
+## Model and lifecycle evidence
+
+Each case has after/Undo/Redo/reopened exports: eight checkpoints accepted, failure null, immutable inputs unchanged, oracle exit0 and complete_project_equal=true. Independently read the captured exported JSON and expected baseline files: all eight pairs are byte-identical, stronger than the reported typed-model equality for these particular artifacts. Verified snapshot/expected/supplemental-script/comparison-receipt hashes. Expected after-Projects remain candidate-derived UI-wiring oracles; independent core tests establish the reset contract separately.
+
+Additional independent model inspection confirms expanded Verified report resets its two pins `(610,210),(610,420)` and full label override; folded Verified report retains both pins and label fraction0.5/offset(0,-32). Both cases retain route entry order, attachments, semantic port anchor records, semantic elements/relations and the entire Review sentinel diagram. Filtered edge's pin `(1020,270)` remains exact in this fixture; this is not a promise that all filtered routes remain at fixed world coordinates. Original working JSON imports remain byte-identical to immutable originals.
+
+Run01 PID7812 and run02 PID4328 both have final close receipts: exit0, failure null, observed exit, immutable inputs unchanged and empty stdout/stderr. Parent observations establish normal AltF4 causes; receipts establish actual exits. Run02 close is now complete, not merely window disappearance. Both saved source projects were reopened in fresh process run02 after run01 closure, then exported and compared against the same frozen after-models.
+
+## Native observations
+
+Expanded before/Undo images show two authored circular handles and manual label; arranged/Redo images show the selected route without those handles while automatic elbows remain. Folded images preserve collapsed presentation and visible promoted exchanges. Source-save images report all source files saved; reopen images report source project opened and retain expanded/folded state. Both sentinel-view images show retained route/label geometry, including the selected pin in expanded sentinel. Whole-model comparison verifies hidden fields that screenshots alone cannot.
+
+The arranged view required Fit and displays71% zoom; Undo retained viewport zoom, so folded Archive partly leaves the viewport until refit. These are recorded viewing limitations, not model-history failures. Guide card13 is readable and correctly distinguishes explicit Layout's visible actual-endpoint pin/label reset from full Reset routing, retained port/attachment choices, dormant hidden/folded overrides and Undo. Search filters topics but required six scrolls to the relevant card; retain this existing discoverability limitation.
+
+## Protocol deviation and adapter incidents
+
+The original plan assumed overwriteable JSON checkpoints. Observation03 visibly reports that the JSON destination already exists and asks for a new file. The original remained intact. The actual workflow instead used fresh JSON exports for model checkpoints, then saved expanded and folded multi-file source projects in separate locations and reopened those sources. Export did not mark source saved or consume model history; source Save supplied the persistence/reopen evidence. This is a justified workflow adjustment, not a falsely reported successful overwrite.
+
+The supplemental export checker is explicitly marked not stage-admitted in its receipts, with its own hash and narrow equality scope; original staged tools remained the existing set. Preserve that provenance rather than describing it as original staging. A rejected click targeted a16×16 icon screenshot; full-window screenshot1 corrected targeting. Short filename typing/set_value failures and successful absolute-path typing are adapter interaction observations, not demonstrated application defects. None authorizes editing expected model bytes; no such repair is evidenced.
+
+## Binding and limits
+
+Native manifest SHA256 `eb208a3a1fa0843be4087e1797d109dc0e3dcddb3255f3ad9f536f3d98292b65`.
+Recorded GUI SHA256 `133375d57bdecf3f3effe5ecc13ec121e1257b90838f2cdb64fb91aa9a530d1b`; oracle `0792aff4cf8460c58fa2bf2f5ddbfa478523b7c9fe9b45e19ec93090191c37c1`.
+Supplemental checker `5bcd8a568d5318dd62217c1e0b35538b22e34403c9727eee8814a5d0ec5a899f`.
+Run01 close SHA256 `ffe8a3cab307ecc4ad45caf027787efdb6e41449fb304fc2cadd242a7fb5daf8`; run02 `6abce58644e8bf2c85e133aa479f44d66eeeb0a6d59361afb9db1d996b4ed745`.
+
+No claim of general crossing/label-aware arrangement quality, arbitrary State-boundary native behavior, Process/Scenario changes, performance, Linux, full workspace/regression-suite completion, or remote publication. This trial saves newly generated multi-file sources; original authored multi-file comment/draft preservation is separately covered by desktop tests, not inferred from this UI sequence. Remote disk-full blockage still separates local acceptance from delivery.

harness/experiments/arrange-reset-20260925/results.md

@@ -0,0 +1,61 @@
+# Explicit Arrange route reset — branch evidence
+
+**Bounded reset candidate verified on Windows; local-only pending publication.** Branch `codex/arrange-reset-ytr83r-20260925` is based on released `715036e132677dd2bc2fb37ed316d93dc9987aec`. Final native/build/Clippy source is `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed`. This result covers the reset capability within issue #32, not a replacement node-layout algorithm or completion of intersection/label-aware automatic arrangement. No routing algorithm change is included.
+
+Publication remains blocked by the [recorded remote disk-space failure](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/issues/32#issuecomment-1330). This branch/evidence is local-only; no successful push, PR, merge or release is claimed. Existing published prereleases are unaffected.
+
+## Behavior
+
+Explicit `Command::Layout` freezes reset eligibility from the staged pre-operation filtered projection. It clears existing pins and the complete label override only for projected edges whose displayed endpoint owners equal both actual placed owners and whose projected owner nodes exist. It retains route entries/order, edge identities, both endpoint attachments, semantic ports and manual port anchors. Ordinary placement movement and the routing engine are unchanged.
+
+Filtered, promoted, missing-owner and outside-projection routes are not reset. Retained pins follow the existing actual-owner equal-delta translation rule, including the State boundary exception; a retained record is not a promise of fixed world coordinates. Projection-excluded owners receive no movement when outside the existing Layout placement scope. Other views remain exact. Whole **Reset routing** remains a distinct operation that removes all overrides. Documentation now describes this deliberate behavior amendment instead of promising that Auto-layout always preserves pins.
+
+Standalone changes form one history entry, including a route-only reset when nodes are already arranged. Nested Layout participates in its enclosing Batch's final validation and history. No-op Layout preserves Redo. A valid pending property draft remains a separate Apply before Layout; an invalid draft blocks Layout without losing its input.
+
+## Recorded checks
+
+All successful receipts below record exit code 0, unchanged pinned source, and no runner failure. Environment: local Windows `x86_64-pc-windows-gnullvm`, frozen offline toolchain, one Cargo build job.
+
+| Source | Check | Actual result |
+| --- | --- | --- |
+| `6c44a2d6a16d8c80320d35a9c8d2eee3b77e8047` | Core library + `release_routing`, `state_diagrams`, `routing_geometry`, `routing_labels`, `route_source`, `group_movement` | **195 passed**, 0 failed/ignored across seven harnesses |
+| `6c44a2d6a16d8c80320d35a9c8d2eee3b77e8047` | `cargo clippy --locked --offline -p oa-core -p oa-desktop --all-targets -- -D warnings` | Passed |
+| `9eb4642e50564165aa0db38d8e91f4c14b818bdc` | `cargo test --locked --offline -p oa-desktop arrange_reset_` | **3 passed**, 1535 filtered out; not a full desktop-suite run |
+| `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed` | `cargo build --locked --offline -p oa-core --example arrange_reset_native_probe` | Passed |
+| `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed` | `cargo build --locked --offline -p oa-desktop --bin arcadia-studio` | Passed |
+| `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed` | Strict core/desktop all-target Clippy command above | Passed |
+| `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed` | Native expanded/folded Arrange, Undo, Redo, source-save and fresh-process reopen | Eight complete-Project comparisons passed; two normal closes, exit 0, empty stdout/stderr |
+
+The three desktop tests cover exact multi-file comment/source preservation through Undo/Redo/reopen, an invalid property draft blocking Layout, and separate valid-property Apply/Layout history. Core cases include explicit reset-only change history, preserved attachments/anchors and empty entries, filtered equal/different-owner deltas, folded actual-owner versus displayed-owner movement, missing owners, excluded projections, State boundary retention, temporary invalid Batch prefix repaired before final validation, and no-op Redo.
+
+The difference from the core-test source `6c44a2d6` to `d6f45a13` is the added native oracle example and desktop history tests. The production reset implementation, production routing and node arrangement did not change in that interval. Each gate is reported at its actual source pin; the 195-test run was not repeated against `d6f45a13`.
+
+Receipts, raw logs and before/after source inventories for all eight gates, including both failures, are preserved in the accompanying evidence archive under `gates/`. Commands run from the identified commit's repository root. Environment was Rust 1.98.1, Windows gnullvm, LLVM-MinGW 20260908 UCRT, dev builds and one Cargo job. `--offline` requires dependencies already cached. The core command is:
+
+```text
+cargo test --locked --offline -p oa-core --lib --test release_routing --test state_diagrams --test routing_geometry --test routing_labels --test route_source --test group_movement
+```
+
+Preserved failures: `01-core-contracts` at `f0d64b531addcea584083e35296d1e5a4cb1fa8d` failed compilation with E0507 because a test moved `Option<EdgeLabel>` through a shared reference; the assertion now clones it. `02-core-contracts-fixed` at `3dfbe1959d8b5717bf8b8c1a76f31afc5ca7072a` compiled, then stopped with 19/20 routing tests passing: the new fixture incorrectly assumed Decomposition excludes FunctionalExchanges. It now uses Capabilities, includes one genuinely visible capability and retains inactive Function placements, with full independently cloned expected Project equality. No production behavior was weakened to accommodate that fixture. The corrected complete selected run is the 195-pass result above.
+
+## Native acceptance
+
+The native fixture supplies expanded/folded originals, two authored visible pins and a label override, fixed semantic anchors, dormant attachments, a filtered-route sentinel and an independent second view. Its expected after-Projects are produced by the candidate `Command::Layout`: they verify UI wiring/save/history against the candidate, not independently prove geometric quality. Independent contract tests and source review supply separate checks. Generate a fresh fixture directory with `arrange_reset_native_probe NEW_DIRECTORY`; compare saved JSON using `arrange_reset_native_probe --compare ACTUAL EXPECTED`. Build commands are above. Run the desktop executable with its matching LLVM-MinGW `libunwind.dll`, open the generated original JSON, and use fresh destinations for every JSON export.
+
+Executed for expanded and folded cases: Open → Arrange → export/compare expected → Undo/export/compare original → Redo/export/compare expected → save source project. After normal process closure, a fresh process reopened each saved source project, inspected its main and sentinel views, and exported another exact comparison. All eight typed-Project comparisons passed; an independent reviewer also confirmed byte equality for these particular JSON artifact pairs. Original imports remained intact. Saved source projects are multi-file bundles, not byte-identical to the generator's single canonical source file; their fresh-process model comparisons establish semantic persistence. Desktop tests separately cover authored multi-file comments and exact source history.
+
+Protocol correction: the initial plan assumed JSON Save overwrites the opened file. The app instead imports JSON without adopting its path; JSON Save As exports to a new destination and refuses an existing destination. The first overwrite attempt was visibly refused and preserved. Subsequent checkpoints used new JSON exports, then actual source Save for clean closure and reopen. The original staged checkpoint helper was not used. A reviewed supplemental checker, explicitly recorded as not stage-admitted, snapshots exports and invokes exact production decoding/equality without mutation. Its SHA256 is `5bcd8a568d5318dd62217c1e0b35538b22e34403c9727eee8814a5d0ec5a899f`.
+
+The launcher admission review found and corrected a package-inventory gap before staging. Captured GUI SHA256 is `133375d57bdecf3f3effe5ecc13ec121e1257b90838f2cdb64fb91aa9a530d1b`; oracle SHA256 is `0792aff4cf8460c58fa2bf2f5ddbfa478523b7c9fe9b45e19ec93090191c37c1`. Both came from reviewed same-pin builds under exclusive local compiler/target ownership and immediate stage capture. Ordinary Cargo receipts do not hash executables at compiler exit; the capture attribution depends on that ownership observation. The evidence archive excludes executables/private profiles but retains their manifests and inventories.
+
+All 18 full-window native screenshots and eight comparisons received independent review. Both GUI processes closed normally, with exit 0 and empty logs. At maximized 1605×872 capture size, selected pins disappeared/reappeared with Arrange/Undo, folded metadata survived, and the guide correctly explained the narrower reset versus whole Reset routing. An icon-sized screenshot was initially selected by the automation helper; its rejected click was corrected using the full-window screenshot. Short filename/set-value helper failures were resolved by absolute-path typing. These observations do not establish application input defects or resolution of the separate restored-window issue.
+
+Material existing usability limits: Arrange requires Fit to bring the wider arrangement into view; Undo retains the viewport and can clip earlier placements until refit. Guide search filters a topic but required six scroll actions to reach the routing card. Automatic shared contacts/crossings remain. These are follow-up work, not evidence of complete issue #32 acceptance.
+
+No full-workspace regression, performance, Linux, general layout-quality, arbitrary State-boundary native or Process/Scenario acceptance is claimed. No source reset rule promises fewer automatic elbows, universal nonintersection or readable placement by itself. Linux remains excluded by the user. Live ownership and delivery status remain in Gitea; this document records branch-specific evidence, not an integrated-state checkpoint.
+
+## Evidence navigation
+
+[Source review](source-review.md), [native acceptance review](native-review.md), [staging review](tooling-review.md), [supplemental checker review](export-checker-review.md). Historical plans and rejected attempts are retained as historical inputs in the archive; the normative implemented contract is in `docs/language.rst` at the tested pin.
+
+[Archive](evidence/arrange-reset-d6f45a13.zip) and [member manifest](evidence/manifest.json): 221 members, 6529778 bytes, SHA256 `219c6dde234f1f30c4af191a538c21eacf874f234af0b8506bb66251db412650`. Every member was reread and verified by length, SHA256 and CRC. Raw evidence retains original machine paths for provenance; peers should use the commit, repository-relative paths and commands above. Native binaries/private profiles are excluded.

harness/experiments/arrange-reset-20260925/source-review.md

@@ -0,0 +1,52 @@
+# Arrange reset candidate source review
+
+Reviewed exact commit `3923860ad2923ad2bcae93b2f0c3ccbcf02d7d75` in `.local/arrange-reset-20260925` against released `715036e132677dd2bc2fb37ed316d93dc9987aec`. Diff is confined to session.rs, release_routing.rs and state_diagrams.rs. No compiler/test execution, router adoption or source changes by reviewer.
+
+No material implementation blocker found in this bounded core reset candidate. Approval here means ready for parent compilation/verification, not accepted product behavior or successful tests.
+
+## Implementation
+
+session::layout checks diagram existence and Scenario rejection before freezing the ordinary projected view. Eligibility requires actual endpoint-placement IDs to equal projected source/target and both projected owner nodes present. This excludes hidden, missing-owner, outside-projection and promoted edges without routing to infer suspension. The same input view is reused for root topology ordering; no post-layout eligibility recomputation occurs.
+
+The existing node sizing/placement and translated_routes calls remain intact. Translation uses original stored positions and actual-owner deltas with State boundary_moves_with unchanged. Only afterward, existing eligible entries have waypoints cleared and label=None. No entry insertion/removal/reordering, attachment mutation, semantic edit, other-view mutation, new routing call or generated elbow persistence is introduced. Temporarily translating an eligible pin before clearing is redundant work, but leaves the specified final state and is not a correctness defect.
+
+Batch execution still determines staged input and final validation/history through the existing session path; no new prefix validation or nested history entry. Borrow lifetimes are coherent: immutable Project/Diagram/view work precedes the existing final mutable diagram borrow. Added owner lookup is fallible and skips absent owners. No new indexing/unwrap panic path found in the added code. Existing layout assumptions about malformed transient candidates are unchanged, not newly certified as universally panic-free.
+
+## Test-oracle assessment
+
+The modified preservation test narrows the intentionally changed expectation to visible pins/labels, while still checking route count/order, other view and Undo. Additional tests cover full exact route vectors including attachments-only/empty entries, fraction-only label reset, port anchors, semantic records, canonical source roundtrip, JSON Layout command parity, Undo/Redo and one-entry history.
+
+Filtered/missing-owner test explicitly identifies one eligible edge and uses authored40/60 offsets plus a7-unit unequal owner offset; folded test adds a13-unit visible-container offset distinct from hidden children. Their expected translations are computed arithmetically by a local helper, not by the production reset/translation helper. Baseline Layout supplies stable node geometry, but named eligibility and sentinel-route expectations remain independent and nonvacuous.
+
+The staged Batch test introduces a duplicate alias, hides routes, runs Layout and repairs the alias afterward. This meaningfully detects accidental prefix validation and stale pre-batch visibility. Its failure branch checks model/revision rollback. The no-op test confirms retained Redo for an empty-view enclosing Batch. State test exercises equal entry/leaf displacement with a stationary owning boundary and retains internal-route metadata; visible external self-route clears overrides while preserving authored attachments.
+
+Existing State `layout_reserves_internal_rows_and_state_routes_retain_hard_pins` checks router preservation BEFORE Layout and internal-row sizing afterward. It does not contradict the new reset policy, despite its broad name; no need to erase ordinary router pin-preservation coverage.
+
+## Limits for parent verification/integration
+
+- No new explicit hidden semantic-port-marker case; anchor preservation is covered, marker-hidden eligibility remains source reasoning pending focused verification.
+- No nonempty already-arranged diagram proving route-reset-only change/history, or a second Layout no-op on that same diagram. Current empty-view no-op test does not establish that particular scenario. A focused regression is useful if the parent expands verification, but the present reset loop visibly handles it.
+- Canonical language parse/format and JSON command parity are core evidence only. They do not prove HTTP transaction handling, desktop pending-draft history, multi-file comments/raw-byte Undo/Redo or native workflows. Those remain separate integration gates rather than grounds for claiming this candidate complete.
+- Eligibility tests use explicit hidden_edges and Decomposition/folding; not every saved category/coverage/filter combination is individually exercised. The implementation correctly reuses the ordinary projection, so no separate filter policy is introduced.
+
+Keep ordinary movement, raw source edits, folded suspension and RemoveEdgeRoute tests unchanged except where the deliberate explicit Layout amendment applies. Documentation must carry the reviewed staged-Batch, enclosing-history and hidden-placement movement qualifications. Actual build/test outcomes remain pending and must be recorded independently.
+
+## Desktop tests and native fixture follow-up at9eb4642e
+
+Reviewed exact `9eb4642e50564165aa0db38d8e91f4c14b818bdc` above `6c44a2d6`, plus the native plan. No new source blocker found. Core production changes since3923860 are formatting only. No builds/tests/native actions executed by reviewer; parent-reported core195 pass and Clippy results remain separate receipts, and desktop tests were in progress at assignment.
+
+Three desktop tests are meaningful at their actual layers:
+
+- Document test creates a real include closure, inserts authored CRLF comment lines, independently clears the expected route's pins/label while retaining attachments, compares all non-target-diagram model state, preserves unrelated module bytes, and checks exact accepted bundle/model Undo/Redo plus Document reconstruction. This closes much of the earlier multi-file source evidence gap. Reconstructing Document from the bundle is not native disk-save/fresh-process reopening.
+- Valid pending-property test uses ordinary Select/Field/Apply as its control, explicitly checks the revised name and original routes, then proves Layout's separate history entry with complete Project and bundle comparisons through two Undo/Redo steps. This is an App message-wiring/history test, not mounted pointer/keyboard UI evidence or an independent layout-geometry oracle.
+- Invalid property test feeds incomplete numeric input, verifies accepted Project/bundle/revision/history unchanged after Layout, and retains exact raw draft. It does not simulate every invalid source draft, which is correctly outside this narrow scope.
+
+The added nonempty already-arranged route-only core test independently names the two routes, asserts unchanged nodes and complete expected Project, one real edit, repeated no-op, Undo/Redo and retained unrelated Redo. It addresses the prior route-only history coverage gap.
+
+Correction to earlier fixture reasoning: Decomposition admits FunctionalExchange, so it was not a valid excluded-projection sentinel. The corrected Capabilities test includes one visible capability, asserts real movement there, and exact retained inactive Function placements/routes. `projection::parents` filters out placements whose kinds are excluded by the projection; folded/filtered descendants within the admitted placement domain may still move, but arbitrary outside-projection owners receive no delta. Earlier broad wording about all stored d.nodes must be read with this admitted-domain qualification. The corrected test has a concrete oracle rather than weakening assertions to accommodate observed output.
+
+Native fixture SHA256 `2781d2915d7fd4e428be119c36b8ffde5105e48e76f6e8f7843069f69e5899cf`; desktop tests file `935d09da577b5e2c7e4b65329e0d89010bde23b0199ad3072f82f99b5e060d26`. Original five-Function geometry is hand-authored; IDs and placement aliases are made explicit, port IDs are deterministic, and fractional witnesses are binary-exact. Both expanded/folded originals contain a filtered route and an entire other-view route sentinel. Expected after-Projects are intentionally generated by candidate Layout and asserted to preserve semantic records/other view. This is a full-model UI wiring/history oracle, not independent algorithm correctness; the source/plan label that limitation correctly. Full JSON and canonical source forms roundtrip through production parsers before writing a fresh directory.
+
+The native plan separates immutable fixtures from writable originals, compares complete saved models, includes Undo/save/Redo/save and fresh-process reopening, and preserves normal close/log evidence. It correctly distinguishes generated elbows from authored pins and does not infer reset from fewer corners. Hidden/promoted route translation is checked against the frozen candidate expected model; independent core tests supply the separate translation contract oracle. Any inspection-only expansion must be a recorded edit outside the accepted checkpoint. No native outcome has yet been reviewed or asserted. GUI artifact/source hashes and fixture hashes must bind the eventual run; source-generated expected files alone are not acceptance.
+
+These changes are local-only while remote publication is blocked; no pushed-code or peer-availability claim is made in this review.

harness/experiments/arrange-reset-20260925/tooling-review.md

@@ -0,0 +1,24 @@
+# Arrange reset native tooling review
+
+Source reviewed at `d6f45a13a7b8ab8dc9b84ee432a832609f5af6ed`; evaluator SHA256 `6a691d6605dd1da0d862ffa3da0cfca2f83547e47b26f9cb648b83061f8f7a39`. Static review plus AST parsing and isolated inventory dictionary checks only. No build, fixture/oracle execution, GUI, source edit or native acceptance.
+
+**Found and corrected one prelaunch admission gap.** The copied launcher originally captured a new package inventory at launch and compared only against that baseline. It would accept an extra file added after stage, although a later checkpoint would reject it. With parent authorization, the draft launcher now converts the admitted stage inventory to its local row shape and requires exact equality before any process launch. Existing close verification preserves that same set. `common.py::LAUNCHER_SHA` and README are updated. Original `.local/state-label-native-20260924/launch.py` remains hash-identical. AST parsing of all four scripts and isolated equal/extra-file comparisons passed; no filesystem trial was performed.
+
+No remaining blocker found within the declared evidence contract:
+
+- Stage binds matching successful dev build/source/environment receipts, preserves exact GUI/oracle/runtime bytes, checks source before/after generation, and freezes package/baseline/tool inventories. It expressly depends on exclusive compiler/target ownership between build completion and capture: these Cargo receipts do not themselves hash emitted binaries. Parent must retain that ownership; this review does not upgrade that attribution to CargoJSON artifact provenance.
+- `--compare` decodes actual and expected via production persistence and compares complete typed Projects. Inequality/decode failure returns nonzero; it does not call Layout, routing or write input files. This avoids the generic-JSON float representation problem. Generation labels its expected Project as candidate-Layout-derived, so it tests GUI/save wiring, not independent arrangement quality.
+- Checkpoint snapshots one explicitly named working JSON, verifies exact captured input and expected/oracle/runtime bindings before/after comparison, and requires unchanged current working bytes, full source and immutable inventory. Its accepted flag asserts saved Project equality only. Source-bundle/comment restoration remains covered by separate desktop tests, not this single-JSON checkpoint.
+- Launcher records PID, argv, environment, private profile/cwd, working/package inventories and observed owned-process exit. Empty logs/exit0 cannot prove how it closed or what the user clicked. Parent observations must separately bind actual Open, Arrange, Save, Undo/Redo, reopening and normal-close actions to the correct process/case/checkpoint.
+
+Failure evidence remains in fresh directories; stage/checkpoint failures quarantine the trial. Launch observer failures preserve their receipts and do not become a successful close. Parent must reject failed/missing process receipts rather than infer acceptance from a later model checkpoint. External supervision remains responsible for a stuck GUI/oracle; the scripts intentionally do not implement automated UI or automatic GUI termination.
+
+Reviewed draft identities after correction:
+
+| File | SHA256 |
+| --- | --- |
+| common.py | `1da64294c8b2380861a4fe2d715f18563a1a0bba1317572e4c3d0a516f04132d` |
+| stage.py | `2185bc1b20eee1eea3e1e4a7527318be14b76d81c3c16e67eff7104083c06d39` |
+| checkpoint.py | `d8b21c75c2c8f1d29f2a730f3125992575038a1353b87d967d53edd1d5d9caf0` |
+| launch.py | `9f25579451895334ca4c3c80137c4a47cd4256c720740fea70b6c6dc664255a7` |
+| README.md | `920c674e65ea6f1533e7f15fd9b7ec7ad1b501e7561561a7df93b92e91022409` |

harness/experiments/state-label-layout-20260924/.gitattributes

@@ -1,2 +0,0 @@
-# Preserve receipt and review bytes exactly as bound by the evidence indexes.
-* -text whitespace=blank-at-eol,blank-at-eof,space-before-tab,cr-at-eol

harness/experiments/state-label-layout-20260924/README.md

@@ -1,85 +0,0 @@
-# State transition multiline label verification
-
-Issue [#36](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/issues/36), Codex-ytr83r/root. Tested production/test source is **70bdcdf8fec1728e971cd90ad7f79a1df99777ff**, based on released **715036e132677dd2bc2fb37ed316d93dc9987aec**. Subsequent commits containing this evidence are documentation-only. The September 24 prerelease remains unchanged. Integration ownership and status belong to the issue.
-
-## Outcome and boundary
-
-The original `Ready\nfor review` title no longer collides with its summary. Routing prepares a shared, measured hard-line plan used by canvas paint, hit boxes, previews, focus/Fit and SVG. Opaque State labels receive hits before covered node/row pixels, in reverse paint order; exposed action rows retain their identity. Authored geometry and all semantic/source data remain unchanged. See the [contract](../../state-label-layout-contract.md) for the retained excerpt budgets, separators, measurement and scope.
-
-The bounded Windows implementation passed its focused core gates, full desktop suite, formatting, strict workspace/all-target Clippy, product builds, and maximized-window native B/W/U Save/reopen checks. A later isolated trial also passed Home Open and all three transition text-row hits at restored1442×932/displayed79%, preserving all nine source files and the entire Project. The earlier unsuccessful restored1442×842 attempt and Home-button discrepancy remain explicit in [observations](observations.md) and [independent native review](native-review.md); the later success does not establish their cause. No all-window input or universal Unicode rendering claim follows. This is a follow-up contribution, not a replacement release or complete application acceptance.
-
-## Automated checks
-
-Windows x86_64-pc-windows-gnullvm, Rust1.98.1, locked/offline dependencies, one build job, no incremental compilation. All completed successful gates preserve identical source inventories before/after.
-
-| Gate | Source | Result |
-| --- | --- | --- |
-| `cargo test --locked --offline -p oa-core --test state_label_layout -- --test-threads=1` | 2af40c7e | 4 passed |
-| `cargo test --locked --offline -p oa-core --test group_movement --test release_routing --test release_states --test routing_geometry --test routing_labels --test state_diagrams -- --test-threads=1` | 2af40c7e | 64 passed |
-| `cargo test --locked --offline -p oa-desktop --bin arcadia-studio -- --test-threads=1` | 70bdcdf8 | 1540 passed, 0 failed, 7 unchanged existing manual/diagnostic ignores |
-| `cargo fmt --all -- --check` | 70bdcdf8 | passed |
-| `cargo clippy --locked --offline --workspace --all-targets -- -D warnings` | 70bdcdf8 | passed, no warnings |
-| `cargo build -p oa-desktop --bin arcadia-studio --locked --offline --message-format=json-render-diagnostics` | 70bdcdf8 | passed |
-| `cargo build -p oa-core --example attachment_snapshot --locked --offline --message-format=json-render-diagnostics` | 70bdcdf8 | passed |
-
-Core production/tests did not change after2af40c7e. Desktop adds12 passing regressions, with no removed or changed baseline outcomes. They cover width-dominating text and Unicode measurements, raw-prefix typed-reference provenance, covered/exposed row and overlapping-label selection, Shift/mixed-group refusal, generic fallback canvas, preview cancellation, fixed(+40,+40) complete-Project group commit/one-step Undo/Redo, and SVG line positions/order. These are scoped checks; the full workspace test suite was not repeated for this follow-up.
-
-Preserved failure: desktop gate03 at66278ed3 failed compilation with E0382 in a new test; no tests ran. Commit70bdcdf8 adds `row.clone()` in that test only. Its failed receipt remains failed; later success does not relabel it. The [source review](source-review.md) also preserves and closes the earlier generic-fallback hit-order finding at the source-review level.
-
-## Native trial
-
-The exact original nine-file fixture comes from peerbed7f825fd00ec32299032a664a5f5d753aad86d, `harness/experiments/state-multiselect-20260923/native/evidence.zip`, SHA256`1d08c1bc6af4856a569ddd320ddf5403a302b8d9437750663a498541e489d663`.
-
-B is original; W changes only the transition title to40 W characters; U changes only that title to CRLF/CJK/combining/ZWJ/trailing-newline text. Independent complete-Project oracles and exact source bytes are frozen before GUI input. At the actual maximized1605×872 window, displayed68% and82% scales show separated/contained lines. Inspector aliases establish label-versus-exposed-action selection. Native group movement M is unexecuted; the fixed movement/history regression supplies that separate evidence.
-
-All six pure-layout checkpoints passed: initial Save and fresh-process reopen/Save for B/W/U. Each preserves the entire Project and all nine source files byte-for-byte. Two isolated-profile processes exited0 after parent-observed Alt+F4, with empty logs and immutable binaries/source inputs unchanged. The [independent review](native-review.md) checks original images, complete models, every source-file hash and both process logs. Recorded zoom percentages are rounded; no exact100% or DPI calibration is claimed.
-
-Preserved GUI:119440896 bytes, SHA256`0401341388025544185455ad5520aa2c1b79ca1387d1a57c2bb0bddb8b23754a`. Runtime libunwind.dll SHA256`aa282fa47bb2c4e210cea5e470cdbdca58568f0be0bc73e404d86ab9cd95ef6a`. The supplemental bundle reader was built from the same candidate/compiler and is separate from the Cargo product artifacts.
-
-## Reusable evidence
-
-### Supplemental restored-window trial, September 25
-
-The [supplemental observations](restored-native-observations.md) record the same
-preserved70bdcdf8 executable, rechecked before launch, with a fresh isolated copy
-of B and a private recent-model profile. At1442×932/displayed79%, Home Open loaded
-the fixture. First title, second title, and summary clicks each selected stable
-transition alias `between`; the latter two followed independently observed
-selection of `state_b`. Pure Save preserved all nine source files byte-for-byte
-and the complete expected Project. Alt+F4 termination was observed and both GUI
-logs were empty, but the watcher returned a null exit code; this is not exit0
-evidence. The initial incorrect direct snapshot invocation rejected includes;
-the established converter-then-snapshot verification subsequently passed.
-That invocation error is preserved narratively; its original stderr was replaced
-by the successful rerun's empty log. The [independent supplemental review](restored-native-review.md)
-checks all ten original images, archive members, source/model comparisons and
-tool hashes, and retains this evidence limitation.
-
-[Supplemental ZIP](restored-native-evidence.zip):888553 bytes,
-SHA256`f120509338fb0ac55480ce11929381fb1a46fecf7d3a1c8869c395335f0eba0a`.
-Its45 evidence members plus manifest include original captures, source copies,
-verification scripts/results and launch/close records. Executables/DLLs are
-excluded. The [integrity receipt](restored-native-integrity.json) records successful
-CRC and every member length/hash checks. Historical builder paths require local
-relocation. Earlier failures remain unexplained; this bounded success does not
-replace the previous evidence or establish acceptance at other window sizes.
-
-A subsequent bounded attempt to obtain the original1442×842 size was
-**unexecuted**: supported UI resizing yielded932→921→732 heights and tool
-target/bounds errors. The fixture was never opened or saved. Its unchanged
-bytes/model establish copied-fixture integrity only. [Exact observations and
-errors](restored842-observations.md) preserve this outcome without diagnosing an
-application defect. [Attempt ZIP](restored842-attempt.zip):661746 bytes,
-SHA256`3efb41d79a9dab70d7026ba83a7f9ec60a319fab79a8f0a383f3ce7a71b0f42f`;
-[integrity receipt](restored842-integrity.json). The original height-specific
-acceptance gap remains open.
-
-### Original trial and automated gates
-
-- [Native evidence ZIP](native-evidence.zip):2886914 bytes, SHA256`039add524eb99ce855c2dc5680eec01c1d5b7f23024025c428125b9771a8e687`.
-- [Native archive receipt](native-archive.json) and [member/relocation index](native-collection.json) preserve original paths and hashes; these paths describe the builder machine and are not peer-accessible dependencies. The ZIP carries original captures, metadata, source fixtures/oracles, checkpoint/process/helper receipts and hash-bound scripts, plus unchanged parent observations and review. Binary/cache payloads are excluded with their hashes retained.
-- [Automated evidence ZIP](automated-evidence.zip):6244436 bytes, SHA256`7706302ef7ee5d160a23ff2d562bedb8911b4e6d7ad4c941544088974b539b6e`,113 verified members. Its [index](automated-index.json), [integrity receipt](automated-integrity.json), and [scope note](automated-README.md) retain both successful and failed command records, frozen build environment, exact source inventories, compiler/dependency receipts and reproducible helper sources. Consult original per-command results rather than adding counts from different scopes.
-
-Native archive member bytes and exact member set were read back after creation; all six independent model comparisons and source-snapshot checks passed, both process receipts were clean, and no bound input changed. The collector establishes archive integrity, not visual correctness by itself.
-
-To reproduce on another Windows machine: check out70bdcdf8, use the project Windows build instructions, run the commands above, obtain the pinned peer fixture, and use the preserved trial/launcher recipes with newly generated local build/admission paths. Never reuse the builder's historical absolute paths or claim its binaries were rebuilt locally. Linux remains excluded by the user's current instruction. External SVG viewer font substitution, authored label occlusion of nodes, dynamic State row/header sizing, and broader State/Process congestion remain limitations outside this fix.

harness/experiments/state-label-layout-20260924/automated-README.md

@@ -1,11 +0,0 @@
-# #36 automated evidence archive
-
-Original gate01–09 and supplemental converter receipts/logs, preserved byte-for-byte.
-
-Source attribution remains per gate:01/02 at2af40c7e,03 at66278ed3,04–09 and converter at70bdcdf8. Gate03 is the retained E0382 compile failure (exit101, no tests executed); gate04 is its later corrected run. Seven existing ignored desktop tests remain ignored. See raw command results and test-evidence note. No full-workspace, native GUI or overall acceptance claim is made here.
-
-The ZIP includes source inventories, frozen environments, Cargo JSON artifact ownership, original compiler/library hash inventories, process-command logs, scripts and attributed review notes. Executable/runtime/rlib payloads are omitted; index.json records their exact hashes, sizes and original paths. Historical absolute paths inside receipts are unchanged. This archive is evidence, not a runnable distribution; reproduce against each identified source commit using the retained commands/environment/toolchain bindings.
-
-Existing notes describe their own review scope/time and may identify findings resolved later; they are not silently rewritten by packaging. Parent-owned native observations and captures belong in their separate native evidence archive.
-
-Packaging verifies exact ZIP member names/count and decompressed SHA256/length for every member, including this README and index. integrity.json outside ZIP identifies the final ZIP and confirms original gate/converter inventories unchanged. No build/helper/GUI was executed and no publication performed by packaging.

harness/experiments/state-label-layout-20260924/automated-index.json

@@ -1,866 +0,0 @@
-{
-  "created_utc": "2026-09-25T00:06:28.817849+00:00",
-  "gates": [
-    {
-      "name": "01-core-layout",
-      "source_commit": "2af40c7e27ed9750b9585c07369dbf17a046a92d",
-      "argv": [
-        "cargo",
-        "test",
-        "--locked",
-        "--offline",
-        "-p",
-        "oa-core",
-        "--test",
-        "state_label_layout",
-        "--",
-        "--test-threads=1"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\01-core-layout\\command\\result.json",
-        "bytes": 4180,
-        "sha256": "902fe24f6304c830f90edb060004d9ffcc218102ee19615171aa82afd7fdfe1f"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "02-core-routing-state",
-      "source_commit": "2af40c7e27ed9750b9585c07369dbf17a046a92d",
-      "argv": [
-        "cargo",
-        "test",
-        "--locked",
-        "--offline",
-        "-p",
-        "oa-core",
-        "--test",
-        "group_movement",
-        "--test",
-        "release_routing",
-        "--test",
-        "release_states",
-        "--test",
-        "routing_geometry",
-        "--test",
-        "routing_labels",
-        "--test",
-        "state_diagrams",
-        "--",
-        "--test-threads=1"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\02-core-routing-state\\command\\result.json",
-        "bytes": 4382,
-        "sha256": "6d102bf5b2e715316233f47756cb21215209045360ae736235974651435c6652"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "03-desktop-tests",
-      "source_commit": "66278ed33b95961d1c129e2ddc172c567effbf9b",
-      "argv": [
-        "cargo",
-        "test",
-        "--locked",
-        "--offline",
-        "-p",
-        "oa-desktop",
-        "--bin",
-        "arcadia-studio",
-        "--",
-        "--test-threads=1"
-      ],
-      "exit_code": 101,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\03-desktop-tests\\command\\result.json",
-        "bytes": 4185,
-        "sha256": "a8e98b66b01f9965f0d49d9f9a4b83fd25e543295c29d8cefc575e98d2346e2c"
-      },
-      "classification": "failed_compile_no_tests",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "04-desktop-tests",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "cargo",
-        "test",
-        "--locked",
-        "--offline",
-        "-p",
-        "oa-desktop",
-        "--bin",
-        "arcadia-studio",
-        "--",
-        "--test-threads=1"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\04-desktop-tests\\command\\result.json",
-        "bytes": 4187,
-        "sha256": "868aeace11d5307be72c01db0bb64347aed700c70fac3efb3ae0ac92d5c32707"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "05-format",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "cargo",
-        "fmt",
-        "--all",
-        "--",
-        "--check"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\05-format\\command\\result.json",
-        "bytes": 4066,
-        "sha256": "09bdbca3090cb92eab436b37f209440d394b4501a6f24ea55006fc3854dc2f07"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "06-clippy",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "cargo",
-        "clippy",
-        "--locked",
-        "--offline",
-        "--workspace",
-        "--all-targets",
-        "--",
-        "-D",
-        "warnings"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\06-clippy\\command\\result.json",
-        "bytes": 4141,
-        "sha256": "226cf432707a66c7baf6d4b866ac101a39d00a46628b3b61162694add7d04a88"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "07-gui",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "cargo",
-        "build",
-        "-p",
-        "oa-desktop",
-        "--bin",
-        "arcadia-studio",
-        "--locked",
-        "--offline",
-        "--message-format=json-render-diagnostics"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\07-gui\\command\\result.json",
-        "bytes": 4171,
-        "sha256": "28a5726e4001652a59f1a8aab47539cf256a48a350b9749d9d3349d0950a80a1"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "08-snapshot",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "cargo",
-        "build",
-        "-p",
-        "oa-core",
-        "--example",
-        "attachment_snapshot",
-        "--locked",
-        "--offline",
-        "--message-format=json-render-diagnostics"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\08-snapshot\\command\\result.json",
-        "bytes": 4191,
-        "sha256": "cee7277ae91a41507481755755b2aacc85e3d0696db5bb30f9800a0c4c56e180"
-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    },
-    {
-      "name": "09-converter-wrapper",
-      "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-      "argv": [
-        "C:/Users/User/.cache/codex-runtimes/codex-primary-runtime/dependencies/python/python.exe",
-        "C:/Users/User/Documents/Git/ARCADIA-Studio/.local/prerelease-native-preflight-20260924/build_converter-full-deps.py",
-        "--repo",
-        "C:/Users/User/Documents/Git/ARCADIA-Studio/.local/state-label-layout-20260924",
-        "--source-commit",
-        "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-        "--environment",
-        "C:/Users/User/Documents/Git/ARCADIA-Studio/.local/state-label-checks-20260924/07-gui/environment.json",
-        "--output",
-        "C:/Users/User/Documents/Git/ARCADIA-Studio/.local/state-label-converter-70bdcdf8-20260924"
-      ],
-      "exit_code": 0,
-      "runner_failure": null,
-      "inputs_unchanged": true,
-      "result": {
-        "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-checks-20260924\\09-converter-wrapper\\command\\result.json",
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-      },
-      "classification": "completed_command",
-      "scope": "Recorded scoped command outcome, not overall acceptance"
-    }
-  ],
-  "converter_source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-  "converter_summary": {
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-      "reason": "Binary payload omitted; exact hash/path retained"
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-      "reason": "Binary payload omitted; exact hash/path retained"
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-}

harness/experiments/state-label-layout-20260924/automated-integrity.json

@@ -1,22 +0,0 @@
-{
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-    "bytes": 45295,
-    "sha256": "3c6d45fb0bffe33c35f1b46d3a2eabc2f89de18d5abc57db0a234dc34165b9f0"
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-  "readme": {
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-    "bytes": 1598,
-    "sha256": "27309073da687f0a267e2ea445365f47f95313e49170789d56fce74a508ea0a5"
-  },
-  "members": 113,
-  "omitted_binary_payloads": 6,
-  "original_gate_and_converter_inventories_unchanged": true,
-  "recorded_gate_source_inventories_unchanged": true,
-  "scope": "Verified archive integrity and original evidence preservation only"
-}

harness/experiments/state-label-layout-20260924/handoff-review.md

@@ -1,17 +0,0 @@
-# #36 integration handoff review
-
-Ready for the parent's documentation/evidence successor commit, within the stated limits. No actionable findings or material overclaim found. Read-only review on 2026-09-24; no compiler, GUI, model validator/helper or Gitea operation executed.
-
-Reviewed the experiment README, STATE opening checkpoint, contract status and appended DECISIONS entry against packaged automated/native records, earlier test reconciliation, observations and independent native review. The documents identify tested implementation70bdcdf8fec1728e971cd90ad7f79a1df99777ff, distinguish core gates at2af40c7e27ed9750b9585c07369dbf17a046a92d, and preserve gate03's compile failure at66278ed33b95961d1c129e2ddc172c567effbf9b. Git confirms no oa-core changes between the focused core gate and tested desktop pin. Current tracked modifications are only three harness documents plus the new evidence folder; no source changes were found in this handoff.
-
-Independent packaged-copy checks:
-
-- native-evidence.zip:2886914 bytes; SHA256039add524eb99ce855c2dc5680eec01c1d5b7f23024025c428125b9771a8e687;293 members. ZIP CRC test, exact member-name set/no duplicates, every indexed member length/SHA256, and embedded collection.json equality with the external index all pass.
-- automated-evidence.zip:6244436 bytes; SHA2567706302ef7ee5d160a23ff2d562bedb8911b4e6d7ad4c941544088974b539b6e;113 members. The same CRC/member/hash/index checks pass; embedded README equals its external published copy. All nine archived command-result records match the index, including failed03; successful gate claims retain their individual pins and scopes.
-- All six archived B/W/U actual Projects independently equal their frozen expected Projects. All54 checkpoint source members match their recorded hashes and original variant bytes. Both archived run launch/close pairs agree on PID, record exit0/null failure/unchanged inputs, and contain empty stdout/stderr. Copied observations.md and native-review.md are exact archived payloads.
-
-The earlier collector finding is closed by the executed archive: the embedded index is present, byte-identical and included in this independent full readback. Original receipt paths and hashes remain historical identities rather than silently rewritten peer-local paths.
-
-Accepted limitations are visible and consistent: maximized1605×872 native observations only; unsuccessful restored-window label/Home attempts and their unproven cause retained; rounded68/82 scales; no native group M/Undo/Redo or generic-fallback GUI claim; mounted exact-group/history coverage separate; no universal Unicode/font or all-window guarantee. Linux and wider State/Process congestion remain excluded. No full workspace-test rerun, merged-main acceptance, replacement release, issue closure or broader application completion is implied.
-
-This review checks handoff integrity and correspondence. It relies on the named independent visual review for screenshot interpretation rather than repeating its image inspection, and on parent observation for the specific Alt+F4 close cause. Independent-machine restored-window follow-up and integration remain with the issue owner.

harness/experiments/state-label-layout-20260924/native-archive.json

@@ -1,15 +0,0 @@
-{
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-    "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-native-evidence-20260924\\evidence.zip",
-    "bytes": 2886914,
-    "sha256": "039add524eb99ce855c2dc5680eec01c1d5b7f23024025c428125b9771a8e687"
-  },
-  "index": {
-    "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-label-native-evidence-20260924\\collection.json",
-    "bytes": 154086,
-    "sha256": "5a5428a00919d9018123ccfd0644085f733a944545e912fee3bfa8b55371dd0d"
-  },
-  "source_commit": "70bdcdf8fec1728e971cd90ad7f79a1df99777ff",
-  "original_trial_unchanged": true,
-  "scope": "Archive integrity only; consult separate mechanical receipt findings and parent observations"
-}

harness/experiments/state-label-layout-20260924/native-review.md

@@ -1,41 +0,0 @@
-# #36 native visual review: 70bdcdf8
-
-**Final scope update:** the addendum below completes the fresh-process reopen and process-exit review. The original snapshot's pending statements are retained as history; the unmaximized-input limitation remains open.
-
-Independent read-only review of original JPG/JSON captures01–15 under `.local/state-label-trial-70bdcdf8-20260924/raw`, the frozen B/W/U inputs, completed save checkpoints and `harness/state-label-layout-contract.md`. All15 full application images were inspected at original resolution; the16×16 secondary captures are not useful application evidence. No GUI input, product/helper execution, build, source/tooling edit or Gitea operation was performed. Fresh-process reopen and final process closure are outside this review snapshot.
-
-The recorded run01 launcher identifies source `70bdcdf8fec1728e971cd90ad7f79a1df99777ff`, PID5328, preserved GUI SHA256 `0401341388025544185455ad5520aa2c1b79ca1387d1a57c2bb0bddb8b23754a`. All15 capture metadata records identify that executable path. Independently reread manifest SHA256 is `7f1b6cfa8f6ca0c36b0b867f8a2ccf555cea292e8df878af629dac5b63d36ee6`. This is evidence attribution, not a newly rerun executable/build check.
-
-## Observed result
-
-No clear title/summary self-overlap, wrapping or ink clipping in the required B/W/U labels was visible in the maximized captures at displayed68% and82%. The text is small at those scales; these screenshots support the concrete cases, not universal glyph containment, perfect legibility at every scale, or pixel-exact font metrics.
-
-- **B, captures03–07:** `Ready` and `for review` occupy separate rows, followed by the `External · Completion [request_ready]` summary. Captures04 and06 show State transition properties with stable alias `between`; capture05 shows State action properties with alias `action_a` and the exposed `entry / Record request` row selected. Thus the recorded sequence demonstrates distinct observable targets for the covered transition label and exposed row. Capture07 shows `All source files saved`. The broader authored diagram remains crowded and overlaps node territory; this is not evidence of global collision avoidance.
-- **W, captures08–11:** the input is exactly40 `W` characters, verified from the pinned expected Project. The title occupies one visibly wider line at both scales, with the summary on the next line. Its rightmost ink appears within the visible white label extent; it is not shortened to the old scalar-width box. Capture09 shows `between` selected after the parent's described far-right/padding interaction. A static after-capture confirms the selected object, not the exact preceding pointer trajectory. Capture11 shows saved status.
-- **U, captures12–15:** the input is exactly `Ready\r\n漢字 é 👩‍🔧\n` (combining acute, ZWJ sequence and terminal LF verified from the expected Project). The canvas shows two inked title rows and an extra blank cell before the summary, consistent with three title cells plus one summary cell. The second row's marks appear contained; capture13 shows `between` after the described blank-cell interaction, and15 shows `between` in the summary-selection sequence. At this screenshot size I do not claim independently verified shaping of every emoji/code point, nor infer preservation of CRLF from pixels.
-
-**Preserved ambiguous observation:** captures01/02 are unmaximized1442×842 at displayed79%. Capture02 clearly has `state_a` selected after the parent's attempted click at(660,534). The coordinate/geometry cause has not been resolved by this review. This attempt must remain recorded as unresolved, not silently reclassified as a successful label hit or generalized into a demonstrated product defect. Successful maximized observations do not establish an all-window-size hit pass. Displayed percentages are rounded; no exact world-space movement oracle is inferred from them.
-
-## Save evidence checked separately
-
-At inspection, checkpoints `01-B-saved`, `02-W-saved`, and `03-U-saved` each have accepted receipts. I independently hashed the checkpoint `actual.json` and pinned expected file: each full Project file is byte-identical to its expected B/W/U file and the manifest/receipt hashes match. Each checkpoint has nine source files, matching the nine baseline members; every saved file's bytes match both its corresponding immutable baseline and its receipt SHA256. Consequently these pure saves preserve complete Project values and authored source bytes, including title separators and authored label geometry. This conclusion uses saved artifacts, not the screenshots' saved-status text. No claim is made for the unused M movement oracle.
-
-## Limits and retained history
-
-Parent reports core68 passes, desktop1540 passes/seven existing ignored, formatting and strict Clippy on the candidate; this visual review does not independently rerun or audit all gate logs. Preserve the earlier desktop gate03 E0382 failure: the initial Shift/mixed regression moved `row` into its selection and reused it. Candidate70bdcdf8 fixes that test-only ownership issue with `row.clone()`; the failed attempt is not a runtime failure and is not erased by the later pass.
-
-The bounded maximized visual observations and three exact pure-save checkpoints support this label repair. Fresh-process reopen, final close/log evidence and any generic-canvas native claims require their own remaining evidence. Group(+40,+40), preview/settled equality and one-step history are assigned to the fixed-oracle production-input regression; no native group displacement is inferred post hoc. The unmaximized79% target ambiguity remains an explicit limitation unless independently resolved.
-
-## Final addendum: fresh process, reopen and closure
-
-Inspected all seven original full-size captures18–24 without repeating the earlier15-image review. Their metadata consistently identifies the pinned GUI path, window263106 and maximized1605×872 dimensions. Run02 launch records identify a fresh PID6100 with the same70bdcdf8 source and GUI hash as run01 PID5328.
-
-Reopened B at displayed68% retains its separate two-line title and following summary in18;19 shows State transition properties with alias `between` after the parent's recorded summary click(737,518), and20 shows saved status. Reopened U in21/22 retains its two inked title rows and blank-cell separation before summary. Reopened W in23/24 retains the single wide title line and separate summary. No new visible required-case clipping or title/summary self-overlap was found. These are reopen observations in the second process; W/U are not additional fresh-process label-hit trials.
-
-Independently reread and hashed checkpoints `04-B-reopened`, `05-U-reopened`, `06-W-reopened`: all accepted; each `actual.json` is byte-identical to its corresponding manifest-pinned expected full Project and receipt hash. Each saved source directory again contains nine files, equal in count to baseline and receipt; every file matches its baseline and receipt SHA256. Across the six reviewed save/reopen checkpoints, all complete Projects and source bytes remain exact. No semantic, authored route or title normalization change is inferred or permitted by these comparisons.
-
-Both close receipts match their launch PID and source pin, report observed exit0, null failure, and `immutable_inputs_unchanged: true`. I independently checked all four stdout/stderr files are zero bytes; their recorded hashes are the empty-file SHA256. These receipts establish successful observed process exit and the launcher's unchanged-input check. The specific normal Alt+F4 close action is parent-observed evidence, not something this read-only reviewer performed or derives from exit0 alone.
-
-The parent additionally reports that restored run02 Home Recent attempts at(1060,744) and the offset-hypothesis point(1052,713) did not open B; after maximizing, the actual Open point(1147,736) did. This broadens the unresolved observation beyond a State-label target, but does not prove a coordinate-mapping cause. Preserve all attempts. Native hit claims remain limited to the successful maximized trials; the initial79% attempt is still not passed or retrospectively diagnosed.
-
-**Final bounded verdict:** no new actionable defect found in the reviewed maximized B/W/U presentation, six exact pure-save/reopen checkpoints, or recorded exits/logs. Fresh-process persistence evidence is now complete for these variants. Keep the restored-window input uncertainty, rounded-scale limitation, synthetic movement/history test scope, and absence of universal Unicode/all-window hit guarantees in the published evidence. This addendum does not certify a broader archive/collector or generic-canvas native trial.

harness/experiments/state-label-layout-20260924/observations.md

@@ -1,25 +0,0 @@
-# State label native observations
-
-Parent observer: Codex-ytr83r/root, Windows native host, 2026-09-24. Candidate source `70bdcdf8fec1728e971cd90ad7f79a1df99777ff`; isolated profile and unrelated cwd per process. These are parent observations, separate from the machine-readable source/model checks. Original images and their bounds/timestamps are in `trial/raw/` in the collected archive.
-
-## Inputs and method
-
-The unchanged original peer fixture B has title `Ready\nfor review` and summary `External · Completion [request_ready]`. W changes only the title to 40 W characters. U changes only the title to `Ready\r\n漢字 é 👩‍🔧\n`. The stage independently validates their complete Projects and freezes their nine-file source closures. No model, route, or title editing occurred in the GUI. Save used Ctrl+S in place. Native movement M was not executed; exact movement/history remains covered by the mounted production-input regression.
-
-Native trial used the actual public Fit and + controls. Displayed percentages are rounded, not exact scale measurements. Initial restored-window capture was 1442×842 at displayed79%; accepted coordinate-based checks used the maximized1605×872 window at displayed68% Fit and82% after one + click. No exact100% or DPI calibration claim is made.
-
-## Observed outcomes
-
-- B: captures01/03/06 show two title lines followed by a separate summary, without the reported title/summary collision. In the maximized window, click(737,518) at68% selected State transition alias `between` (04); exposed entry-row click(582,519) selected State action alias `action_a` (05). After +, summary click(732,499) at82% selected `between` (06). These targets were read from the actual inspector, not inferred from route color alone.
-- W: captures08–10 show the long single-line title within the enlarged white label extent and a separate summary. Click(900,514) in the far-right lower label area over State B at68% selected `between` (09), demonstrating the width-dominating title's hit area. Capture10 records82% appearance. Authored labels may still cover node content; this fix preserves their authored centers and is not an automatic collision-free layout claim.
-- U: captures12–15 show `Ready`, the Unicode line, a blank trailing title cell, and the summary below it. The visible ink fits the label extent at68/82 without a clear self-overlap. Blank-cell click(737,514) at68% selected `between` (13); summary click(731,504) at82% retained the transition (15). These small-font witnesses do not establish universal font/shaping correctness or arbitrary Unicode ink containment.
-- Ctrl+S completed with `All source files saved` for B/W/U (07/11/16). Checkpoints01-B-saved,02-W-saved,03-U-saved each report accepted=true/failure=null, full Project equality, and byte-exact preservation of all nine original source files for that variant.
-- Parent closed run01 using Alt+F4. The launcher recorded PID5328 exit0, empty stdout/stderr, and immutable inputs unchanged.
-- Fresh run02 PID6100 opened with Recent models listing the three exact working paths (17). After maximizing, B reopened through Recent (18); click(737,518) selected `between` again (19), then Save (20). U and W reopened through Recent in this fresh process (21/23) and were saved (22/24). They retained the visible label presentation. Checkpoints04-B-reopened,05-U-reopened,06-W-reopened each report accepted=true/failure=null and the same complete-model/source conservation.
-- Parent closed run02 using Alt+F4. Its launcher also recorded exit0, empty stdout/stderr, and immutable inputs unchanged. Neither process was terminated programmatically.
-
-## Unsuccessful input attempts and limits
-
-The initial restored-window click at requested(660,534), intended for B's summary, selected `state_a` instead (02). This attempt is not a passed label-hit check. On fresh run02, the restored-window Recent B Open button also did not respond to its screenshot-derived(1060,744) click. A one-off frame-offset hypothesis using(1052,713) likewise did not establish a successful Open. Maximizing through the observed accessibility control and clicking the newly observed Recent Open(1147,736) succeeded. This suggests a restored-window input-coordinate issue, but the cause is not proven; no product fix or universal restored-window hit correctness is claimed. The failed attempts are retained rather than recast as success.
-
-Maximized checks, independent mounted hit regressions at multiple pan/zoom values, and complete Save/reopen comparisons form the scoped evidence. No native group drag, native Undo/Redo, exact1.0 scale, native generic-fallback-canvas interaction, Linux execution, or full-project usability acceptance is claimed here. The automated regressions separately exercise generic State targeting, fixed(+40,+40) group commit, exact Project history, and shared SVG positions. Wider State/Process congestion and dynamic row/header layout remain outside this bounded change.

harness/experiments/state-label-layout-20260924/restored-native-integrity.json

@@ -1,10 +0,0 @@
-{
-  "archive": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-restored-native-20260925.zip",
-  "bytes": 888553,
-  "sha256": "f120509338fb0ac55480ce11929381fb1a46fecf7d3a1c8869c395335f0eba0a",
-  "crc_ok": true,
-  "all_member_lengths_and_sha256_verified": true,
-  "payload_member_count": 45,
-  "total_member_count": 46,
-  "manifest_sha256": "f9a6997aa4e3b6358814d57b0da60f5d235ce81ac638e139a25bc7664b341624"
-}

harness/experiments/state-label-layout-20260924/restored-native-observations.md

@@ -1,37 +0,0 @@
-# #36 restored-window native observation
-
-Local-only evidence, 2026-09-25 UTC. Parent owns publication/integration. No source code edits, commits, Gitea posts, model content edits, movement, deletion, or renaming were performed.
-
-## Identity and isolation
-
-Preserved source commit `70bdcdf8fec1728e971cd90ad7f79a1df99777ff`, earlier evidence commit `57b3fe4bff43a7df602f1567b8867bb1d31051d0`. Before launch rechecked GUI SHA256 `0401341388025544185455ad5520aa2c1b79ca1387d1a57c2bb0bddb8b23754a`; confirmed adjacent libunwind.dll. `launch.json` records executable, child-only LOCALAPPDATA profile, unrelated working directory and PID2892. Copied original immutable baseline B into this evidence directory's `working/B`; original inputs were never opened in the GUI. Seeded private recent-model list with only this copy. `original-source-hashes.json` was recorded before launch.
-
-All UI input used `node_repl` plus `@oai/sky`, with one action then refresh. Raw original screenshot payloads were saved once under `raw/`, accompanied by metadata without payload duplication. Screenshots were inspected through the tool's original display, not re-emitted or transformed. No capture/input helper errors occurred.
-
-## Observed sequence
-
-The restored window remained 1442×932 throughout (screenshot dimensions), with displayed State zoom79%. No maximize, resize, pan or zoom was performed. The fixture opens directly to Behavior & scenarios, Request lifecycle, State multiselect - main.
-
-| Capture | Action and observed outcome |
-| --- | --- |
-| 01-home | Home, private B recent-model card visible. |
-| 02-open-attempt | Current observed Open clicked at(1061,574); title became State group native and Working status appeared. |
-| 03-opened | Refreshed without another input; fixture loaded, 0 selected. Ready and for review have separate title rows followed by External · Completion [request_ready]. No observed self-overlap or clipping within this title/summary. |
-| 04-title-hit | First title row clicked(652,515); inspector State transition, stable alias between. |
-| 05-clear | Blank canvas click(990,630) did **not** clear selection. Retained as an observation; not counted as reset or transition hit. |
-| 06-state-b | Click(798,596) selected State, stable alias state_b. |
-| 07-second-title | Second title row clicked(656,525); inspector State transition, stable alias between. |
-| 08-state-b | Click(798,596) again selected State, alias state_b. |
-| 09-summary | Summary clicked(661,534); inspector State transition, stable alias between. |
-| 10-save | Ctrl+S; bottom status All source files saved. |
-| 11-close-windows.json | Alt+F4, then fresh list_windows returned no Arcadia windows. |
-
-Text is small at this zoom. The authored diagram remains crowded, and this is not global collision-avoidance evidence. This new run establishes bounded successful restored-window Home Open and first-title/second-title/summary hits at1442×932/79%, not all-window acceptance. Earlier1442×842/79% and restored Home failures remain recorded in the prior review; their cause is not established or reinterpreted by this success. No exact-world-space movement claim is made.
-
-## Save and close verification
-
-`verification.json` and reproducible `verify.py` record all nine source members byte-identical to the immutable original baseline and full Project JSON byte/value-identical to pinned expected B, SHA256 `bf04d72167e8779940dec040f47c7ac0ca69cb7feea35272f2a382c3e73dceb7`. The preserved bundle_converter.exe and attachment_snapshot.exe both returned0 with their previously recorded hashes; their stderr logs are empty. GUI stdout/stderr are both zero bytes.
-
-Preserved failed verification attempt: attachment_snapshot.exe was first invoked directly on project.arcadia and rejected includes with `Error: Text("4:5: An include requires a source bundle; single-string parsing never reads files.")`; no actual.json was created then. The correct established converter-then-snapshot flow above subsequently passed. This was a verification invocation error, not a GUI/model defect.
-
-Normal Alt+F4 close was directly performed and disappearance observed. The attached PowerShell process watcher records has_exited=true in `close.json`, but ExitCode is null. Therefore this run claims observed process termination, **not** observed exit0. No warning or crash appeared; GUI logs remain empty.

harness/experiments/state-label-layout-20260924/restored-native-review.md

@@ -1,27 +0,0 @@
-# Independent review: #36 restored-window observation
-
-Accept the bounded successful observation at 1442 x 932 / 79% as additional evidence. It does not resolve the earlier 1442 x 842 failures, establish their cause, certify arbitrary restored sizes, or establish GUI exit code 0. No material contradiction found in the bounded outcome.
-
-Reviewed `.local/state-restored-native-20260925` and its sibling ZIP against original `.local/state-label-trial-70bdcdf8-20260924/baseline/B` and `expected/B.json`. Read REPORT, verification/launch/close receipts, package manifest, verification/package scripts, and raw screenshot metadata. No UI input, builds, model/source edits, publication or Gitea actions. This review file is the only write.
-
-## Independently checked
-
-- ZIP CRC test passed. Exact member set: 45 payload files plus PACKAGE-MANIFEST.json. Every payload length/SHA256 matched the manifest and current loose file bytes. Manifest bytes matched the ZIP copy and external receipt hash. ZIP is 888553 bytes; SHA256 `f120509338fb0ac55480ce11929381fb1a46fecf7d3a1c8869c395335f0eba0a`. Manifest SHA256 `f9a6997aa4e3b6358814d57b0da60f5d235ce81ac638e139a25bc7664b341624`.
-- All nine saved source members, including their relative-path set, are byte-identical to the original trial's immutable baseline B. Captured actual.json is byte-identical and JSON-value-identical to original expected/B.json; SHA256 `bf04d72167e8779940dec040f47c7ac0ca69cb7feea35272f2a382c3e73dceb7`.
-- Preserved converter and snapshot executable hashes match verification.json. GUI executable independently rehashed as `0401341388025544185455ad5520aa2c1b79ca1387d1a57c2bb0bddb8b23754a`, matching launch.json. No helpers were rerun; converter/snapshot exit results remain recorded receipts. Source-byte identity and full snapshot identity were independently recomputed.
-- All ten raw JPEGs were independently viewed without editing/cropping. Their decoded dimensions are 1442 x 932, consistent with metadata. State captures display 79% and the restored-window titlebar control. Home Open progresses from the copied B recent entry, through Working, to the loaded fixture.
-- Capture03 has no selection. Capture04 shows State transition / stable alias `between` after the first-title action. Capture05 retains that selection following the blank-canvas action, as the report explicitly states. Captures06/08 show State / `state_b`; captures07/09 return to State transition / `between`, making the second-title and summary observations nonvacuous. Capture10 shows All source files saved.
-- The transition's two title rows and following summary are vertically distinct. Text is small and the diagram remains crowded; this is not a global readability or collision-avoidance pass. Screenshot state supports reported action outcomes, while exact input coordinates/action chronology come from the operator report, not independent replay.
-- close.json says has_exited=true with exit_code=null; final window inventory is empty. GUI stdout/stderr are empty. This supports observed termination only. Alt+F4 cause is the operator's recorded action; empty logs do not prove exit0.
-
-## Scope and handoff qualifications
-
-The original source pin is reported as `70bdcdf8fec1728e971cd90ad7f79a1df99777ff`; executable-to-source provenance inherits the original trial's build/staging evidence. This review independently binds the executable bytes, not a new build.
-
-This success at 1442 x 932 cannot falsify a failure at 1442 x 842 or explain prior restored Home failures. Preserve both observations and keep #36's wider acceptance open. Source save with no model content changes proves preservation in this run, not changed-content persistence or a fresh-process reopen.
-
-The failed direct snapshot invocation is preserved narratively in REPORT; the packaged snapshot stderr is the successful rerun's empty log. Do not describe the package as containing an independently reviewed raw log of that failed attempt.
-
-The package omits executables and the original baseline/expected inputs. Publication should retain explicit links to the original trial evidence/source pin for reproducible comparison. This review makes no publication or integration claim.
-
-Audit method: read-only Python standard-library ZIP CRC/member checks, SHA256 and complete byte/JSON equality against original trial files; Pillow image dimension decoding; view_image inspection of all ten raw images; PowerShell file hashing. No production decoder or GUI rerun.

harness/experiments/state-label-layout-20260924/restored842-integrity.json

@@ -1,10 +0,0 @@
-{
-  "archive": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\state-restored842-native-20260925.zip",
-  "bytes": 661746,
-  "sha256": "3efb41d79a9dab70d7026ba83a7f9ec60a319fab79a8f0a383f3ce7a71b0f42f",
-  "crc_ok": true,
-  "all_member_lengths_and_sha256_verified": true,
-  "payload_member_count": 43,
-  "total_member_count": 44,
-  "manifest_sha256": "d51dc48095ba881b99ab745267830402fe4a164a680d85415c7b5f7383f6a15d"
-}

harness/experiments/state-label-layout-20260924/restored842-observations.md

@@ -1,42 +0,0 @@
-# #36 exact1442x842 trial: unexecuted after bounded resize failure
-
-Local-only 2026-09-25 evidence; parent owns publication/integration. No production source changes, compiler runs, git, Gitea, model Open/Save, content changes, or diagram movement.
-
-The requested1442x842 window was not obtained. Home recent Open and79% title/second-title/summary trials at that size are **unexecuted**, not passed. Earlier restored-window uncertainty remains open. These resize/tool outcomes are not attributed to an application defect.
-
-## Identity and isolation
-
-Same preserved70bdcdf8fec1728e971cd90ad7f79a1df99777ff GUI, SHA256 rechecked before launch: `0401341388025544185455ad5520aa2c1b79ca1387d1a57c2bb0bddb8b23754a`. Adjacent libunwind.dll confirmed. launch.json records PID7500, executable, private child-only LOCALAPPDATA and cwd. Immutable original B copied to working/B and private recent-model list seeded; original-source-hashes.json captured before launch.
-
-UI used only supported @oai/sky through node_repl. Original screenshots saved once; no payload re-emission or transformation.
-
-## Every action and observation
-
-| Capture | Action / result |
-| --- | --- |
-| 01-initial | Home at1442x932; private recent B visible. |
-| 02-resize | Bottom-area drag from(720,930) to(720,840); still1442x932. |
-| 03-system-menu | Alt+Space; visible system menu with Size. |
-| 04-size-mode | Press s; menu closes;1442x932. |
-| 05-bottom-size-mode | Down;1442x932. |
-| 06-size-up | Up; observed1442x921. |
-| no07 capture | Attempted click(720,841) to set edge; tool rejected with exact error below. No claim click delivered. |
-| 08-resize-recovery | Per skill, activate target and refresh; observed1442x732. This is observation, not diagnosis of why height changed. |
-| 09-finish-size | Return; remains1442x732. |
-| no10 capture | Final bounded drag from observed lower border(720,731) to(720,841) rejected with bounds error below. |
-| 11-before-close | Fresh observation1442x732, still Untitled mission Home. |
-| 12-close-windows.json | Normal Alt+F4, then list_windows returned no Arcadia windows. |
-
-Exact first rejection:
-`point (779, 893) is over ChatGPT.exe "Chrome Legacy Window", not target window arcadia-studio.exe "Untitled mission — Arcadia Studio"; activate the target or take a fresh screenshot before retrying`
-
-Exact final rejection:
-`point (720, 841) is outside window bounds { originX: 0, originY: 0, width: 1442, height: 732 }`
-
-After both errors prior coordinates were discarded; final fresh observation preceded normal close. No other app was automated or intentionally targeted.
-
-## Integrity and closure boundaries
-
-verify.py/verification.json use the preserved converter and snapshot helpers to compare the **unopened, unsaved copy** to original immutable B. All9 source bytes and full Project bytes/values match. This is fixture integrity only, not native save evidence. Helpers both returned0; GUI stdout/stderr empty. Normal Alt+F4 and window disappearance directly observed; exit code was not captured. No exit0 claim.
-
-The archive contains report, script/results, source copy/hashes, original screenshots/metadata, launch/profile and logs. Executables and DLLs excluded. No claim of842 interaction, reopened persistence, or universal window-size correctness.

harness/experiments/state-label-layout-20260924/source-review.md

@@ -1,36 +0,0 @@
-# #36 implementation review at 2af40c7
-
-Read-only source review of `2af40c7e27ed9750b9585c07369dbf17a046a92d` in `.local/state-label-layout-20260924`, confirmed clean after writers settled. This is a preliminary implementation review, not final acceptance. No independent compilation, GUI or runtime tests; parent owns execution. I authored the separate State canvas regression include earlier, so review of those tests is a consistency check, not independent authorship review.
-
-**Follow-up status:** the P2 below is closed at source-review level by `1f471288284102f46f67075765568dbf5856474b`, inspected in clean `.local/state-label-hit-review-20260924` with exact parent `2af40c7e27ed9750b9585c07369dbf17a046a92d`. Integration and execution remain parent-owned; no native acceptance is claimed. No new actionable finding in this bounded follow-up.
-
-## Actionable finding
-
-**P2 — Generic diagram surface paints State labels above nodes but still selects the covered node.** This is a reachable surface: `views.rs:403` includes dedicated State diagrams in the saved-view picker (only Scenario is excluded), constructs `DiagramCanvas` at470, and `app.rs:3697` sends non-Scenario choices to `Page::Diagram`. The new generic painter defers State label rectangles/text until after nodes (`diagram.rs:1491`), matching their visible foreground position. However `diagram.rs:331` context targeting, `diagram.rs:999` ordinary press, and `diagram/multiselect.rs:206` production group/Shift targeting still resolve nodes before labels. Additionally `DiagramCanvas::hit_label` at428 chooses nearest center rather than the last painted overlapping State label. The same authored label over a State therefore looks selectable but returns the obscured placement in this supported view; two overlapping State labels can choose the obscured one.
-
-Use one dedicated-State-plan background hit helper in the relevant generic target paths, before ordinary node targets but after existing explicit selected-handle decisions, with reverse actual label paint order. Keep non-State label/node priority unchanged. Cover generic ordinary click, context target and Shift target at a fixed label-over-node point; cover overlapping State labels with the lower label selected. The existing generic `detached_label_selects_connection_and_occluding_card_owns_its_hit` test describes non-State behavior and should continue to pass. Alternatively explicitly remove/restrict this supported surface, but that would be a larger product change than the local target fix.
-
-**Repair constraint:** an unconditional non-Shift handle `return None` in generic `group_input` would bypass mixed-selection refusal: the ordinary route-edit path has no StateCanvas-style singleton gate. Instead resolve a dedicated-State selected attachment/bend to `Target::Edge(selected)` before the State-label prepass, then use existing Shift/group admission. The existing singleton/nonmember fallthrough already reaches ordinary handle editing where allowed. A selected Edge+Placement group must remain captured/refused, and Shift on a handle must toggle that handle's exact Edge even when another label overlaps it. This challenges the proposed follow-up design; it is not an additional defect introduced in the reviewed commit.
-
-## Reviewed coherent behavior
-
-- Core builds `StateLabelLayout` only for a StateTransition in a dedicated State projection. The raw global48 summary remains `EdgeLabelGeometry.text`; fixed title budget is computed from that raw excerpt before width measurement. LF/CRLF/CR and declared Unicode separators become explicit cells; blank/trailing cells survive; tab expansion is display-only. Title and summary positions share 12-unit cells, minimum24 height and five-unit horizontal padding.
-- `state_label::measure_line` matches installed `iced_graphics-0.14.0/src/geometry/text.rs::Text::draw_with`: same Paragraph implementation, global font system, font/shaping/alignment defaults, font10, absolute12 and infinite bounds. Helper wrappingNone versus painter default wrapping cannot introduce width wrapping at infinite width for these already split lines. Paragraph advance plus padding still needs the declared native ink-containment checks; no universal Unicode claim follows from the source review.
-- Production desktop routing consumers found by source search all call the measured wrapper, including ordinary/preview scene, Fit, State Fit, usage/focus, State bend setup, generic export and work/allocation geometry. Remaining direct core routing calls are tests. Measurement occurs before collision placement; core remains font-independent and derived plans are not serialized.
-- Dedicated State hit order matches its opaque backgrounds and reverse stable edge paint order. Endpoint/bend checks and group admission remain at their existing input sites. Raw summary prefix, not normalized display lines, feeds typed-reference visibility, preventing CRLF byte-offset corruption. The State projection admits only non-Internal StateTransition edges, so the painter's plan-only branch does not suppress another supported label kind there.
-- Settled SVG now emits the planned escaped lines and opaque backgrounds after nodes; the actual export test exercises this ordering, beyond the isolated string helper test. Non-State SVG label placement is preserved.
-- The diff contains no semantic model/schema/serialization change and does not author node sizes, route fraction/offset or waypoints. Automatic label centers may change from corrected bounds as intended. Existing scene caching still avoids recomputation on unchanged hover/selection; shaping adds bounded work per retained line when routing actually occurs. No concrete performance blocker found in this bounded static review.
-
-## Test assumptions and remaining evidence
-
-The new State canvas fixed-point fixture is defensible from source, rather than adjusted to returned geometry: B at(760,180),224x94 has Bottom0.5 attachment(872,274); the shape inset is zero at the side midpoint. Fraction0 and offset(-432,-14) give center(440,260). A's single entry row occupies y244..270. Thus (440,260) exercises covered row ownership, (440,272) the summary over the State header, and (200,260) the exposed row. Moving both B/C by(0,320) moves the anchor/label center by the same amount with the original authored offset; no waypoints require translation. The assertions deliberately fail if these declared assumptions cease to hold.
-
-Those tests cover synthetic dedicated-canvas interactions and cancelled group preview; they do not establish native glyph containment, generic-canvas targeting, actual peer-fixture pixels, settled-move equality, or save/reopen/Undo. Parent's focused/full tests and native acceptance still need to supply their assigned evidence. The transient syntax/duplicate-tail states observed while writers were active were corrected before this pinned review and are not open findings.
-
-## Generic hit repair follow-up at 1f471288
-
-Inspected the exact three-file commit diff and all230 lines of its new `diagram/state_label_input_tests.rs`; no source writes, compiler or product execution. `hit_state_label` now resolves only actually painted, nonempty State-plan rectangles in reverse stable paint order. Generic context targeting and ordinary click consult it before ports/nodes, while selected attachment/bend controls remain earlier. Selected label dragging requires that selected label to be the frontmost one; the lower selected label cannot steal the upper label's click. The existing nearest-center/non-State path stays intact.
-
-Generic group input resolves a selected State attachment/bend to the exact Edge target before the label target and then passes through the existing Shift, singleton/nonmember, editability and mixed-group checks. It does not introduce the previously challenged unconditional handle fallthrough. For a selected Edge+Placement set, a handle press creates the existing unsupported group lifecycle and threshold release refuses; a singleton still falls through to the ordinary handle edit. Shift on the overlapped selected handle toggles that handle's Edge, while Shift away from handles toggles the front label. No global edge-first policy or non-State ordering change was introduced.
-
-The added tests exercise the real generic Program path at three zooms/nonzero pan, plain/context selection above a node, lower-selected overlap, front-label drag, read-only selection, Shift label-versus-handle identity, selected bend continuation and mixed refusal. At half zoom the pointer is deliberately17 world units below the central bend, beyond its16-unit radius and still within the18-unit half-height; this is a valid independent separation of label and handle hit regions. Fixture setup uses routing only to author an offset placing both labels at the separately declared(200,150) target, not to choose the expected winning Edge. These tests remain unexecuted by this reviewer. Existing attachment tests still need their scheduled run; the new focused handle regression directly covers a bend rather than an attachment.

harness/release-routing-contract.md

@@ -204,8 +204,3 @@ are recorded in release-routing-verification.md. The measured release full solve
 is 119 ms, so the initial settled target is not claimed as passed. Current Linux
 verification and broader release acceptance remain separate from the completed
 routing workflows.
-
-Dedicated State transition title/summary layout, measured desktop label bounds
-and painted-label hit ownership are specified in
-[the State label layout contract](state-label-layout-contract.md). This derived
-presentation follow-up does not change authored routing metadata.

harness/state-label-layout-contract.md

@@ -1,37 +0,0 @@
-# State transition label layout
-
-Derived presentation contract for [issue #36](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/issues/36), based on source `715036e132677dd2bc2fb37ed316d93dc9987aec`. This follow-up is separate from the frozen September 24 prerelease. Implementation at `70bdcdf8fec1728e971cd90ad7f79a1df99777ff` has [scoped Windows test/build and native Save/reopen evidence](experiments/state-label-layout-20260924/README.md), including an explicit restored-window input limitation. Integration status belongs to the issue.
-
-## Scope and decision
-
-The reproduced external transition title `Ready\nfor review` occupies two lines, while the old painter reserved only one line before its summary `External · Completion [request_ready]`. Routing sized the box from the summary alone. The correction is one derived title/summary layout on routed labels in dedicated State projections. Other projections, State headers, action rows and internal-transition rows retain their existing layout.
-
-The layout is prepared before label placement, so painting, collision avoidance, hit bounds, focus, previews and SVG share it. Core accepts a line-width measurement callback without a font dependency. Desktop consumers use the same Iced Paragraph font, size, shaping and line-height configuration as their canvas text. Core-only callers retain an explicitly approximate deterministic width fallback. No semantic model or serialized layout field is introduced.
-
-Flattening line breaks would lose the authored presentation. Enlarging only the paint background would leave focus and selection inconsistent. A scalar-width estimate is insufficient for a width-dominating title such as 40 `W` characters. Dynamic node/row layout is outside this reproduced defect and would change unrelated State placement and group-editing contracts.
-
-## Excerpts and display lines
-
-Keep the existing summary excerpt: at most 48 Unicode scalars of the original summary, taking 47 and an ellipsis when longer. `EdgeLabelGeometry.text` retains this raw excerpt. Typed usage visibility compares this original prefix with the original summary; normalization must never change the field offsets or expose text after the cutoff.
-
-For compatibility, the title budget is fixed from the old summary width, before new measurement: `floor((7*N+6)/6)`, where `N` is the retained raw summary's scalar count. Apply the existing whole-prefix-and-ellipsis rule to the raw title. This is a bounded excerpt, not a promise to retain breaks beyond its cutoff.
-
-In each retained excerpt, CRLF is one display break; LF, bare CR, NEL, Unicode line separator and paragraph separator are also breaks. Tabs display as four spaces. These transformations do not modify source or raw usage provenance. Empty blocks have zero lines. Nonempty trailing and blank lines are preserved: `A\n` and `\n` each have two cells. A CR at an excerpt boundary is a break even if its LF was truncated.
-
-Each line uses font size 10 and an explicit 12-unit line cell, without wrapping. The summary begins after all title cells. Width is the maximum measured displayed-line advance plus five units of padding on each side. Height is at least 24 units and otherwise 12 times the total line count. Lines start at `(5, 12*index)` relative to the shared box. Authored fraction, offset, center, attachments and waypoints remain unchanged. Automatic label positions may change because their obstacles are now accurate.
-
-## Hit ownership and consumers
-
-The dedicated State canvas paints opaque label backgrounds after nodes and rows. Its ordinary hit test therefore checks those same rectangles before nodes/rows, in reverse label paint order. Padding and blank cells belong to the rectangle. Existing selected endpoint/bend handling remains earlier; path-distance ties, group admission and `(placement, relation)` row identities remain unchanged. Exposed adjacent row pixels still select that exact row. This deliberately does not model every crossing route-stroke pixel.
-
-Scene routing, edge/group previews, usage/focus queries, generic canvas paths receiving a State plan and SVG all consume the measured plan. SVG emits explicit positions for each line and the same font-size declaration; exact appearance under an external viewer's substituted font is not guaranteed.
-
-## Acceptance
-
-- Exact peer fixture: two title cells followed by one summary cell, readable and selectable at its last line, with full Project/source conservation.
-- Bounds falsifiers: 40 `W` title characters and a fallback/combining-text case, plus blank lines and separators. Inspect actual native glyph containment; Paragraph advance alone is not a universal ink-overhang proof.
-- Raw-prefix provenance across CRLF and multibyte text, typed fields at/after the cutoff, and duplicate names in unrelated prose.
-- Label over node selects the Edge; adjacent exposed row keeps its StateRow identity; overlapping labels choose the last painted. Shift selection, mixed-group refusal and existing handles keep their contracts.
-- Preview and settled scene bounds agree after movement; nonzero pan/zoom has no stale hit rectangle. Save/reopen and Undo/Redo preserve the independently declared source/model oracles.
-
-Use meaningful automated checks and the actual Windows GUI. Linux is excluded by the user's current instructions. Publish verification and limitations with the implementation before closing #36.