diff --git a/crates/cord-gui/Cargo.toml b/crates/cord-gui/Cargo.toml
index 56ad806..2504954 100644
--- a/crates/cord-gui/Cargo.toml
+++ b/crates/cord-gui/Cargo.toml
@@ -3,7 +3,7 @@ name = "cord-gui"
 version = "0.1.0"
 edition = "2021"
 description = "Interactive GUI editor for Cord geometry"
-license = "MIT"
+license = "Unlicense"
 repository = "https://github.com/pszsh/cord"
 publish = false
 
@@ -23,7 +23,6 @@ cord-expr = { path = "../cord-expr" }
 iced = { version = "0.14", features = ["wgpu", "advanced", "markdown", "tokio", "canvas"] }
 rfd = "0.15"
 bytemuck = { version = "1", features = ["derive"] }
-anyhow = "1"
 serde_json = "1"
 dirs = "6"
 arboard = "3"
diff --git a/crates/cord-gui/src/app.rs b/crates/cord-gui/src/app.rs
index 1fc917c..892b786 100644
--- a/crates/cord-gui/src/app.rs
+++ b/crates/cord-gui/src/app.rs
@@ -323,7 +323,6 @@ impl App {
                     added = true;
                 }
                 if !added {
-                    // Force a re-render even if nothing new
                     self.reparse();
                 }
             }
@@ -476,8 +475,6 @@ impl App {
         match parse_expr_scene(src) {
             Ok(scene) => {
                 let mut graph = scene.graph;
-
-                // Collect all SDF roots: cast objects + plot expressions
                 let mut sdf_roots: Vec<cord_trig::ir::NodeId> = Vec::new();
 
                 let render_objects: Vec<(String, cord_trig::ir::NodeId)> = if scene.cast_all {
@@ -491,7 +488,6 @@ impl App {
                     sdf_roots.push(id);
                 }
 
-                // Convert plot expressions to SDF geometry
                 let mut plot_nodes: Vec<cord_trig::ir::NodeId> = if scene.plot_all {
                     let mut nodes: Vec<_> = scene.all_vars.iter().map(|(_, id)| *id).collect();
                     nodes.extend(&scene.bare_exprs);
@@ -499,7 +495,6 @@ impl App {
                 } else {
                     Vec::new()
                 };
-                // Always include explicit plot() targets and auto-instantiated functions
                 plot_nodes.extend(&scene.plots);
                 for &node_id in &plot_nodes {
                     let info = classify_from(&graph, node_id);
@@ -507,7 +502,6 @@ impl App {
                     sdf_roots.push(sdf);
                 }
 
-                // Union all geometry
                 if sdf_roots.len() >= 2 {
                     let mut root = sdf_roots[0];
                     for &node in &sdf_roots[1..] {
@@ -1112,7 +1106,7 @@ impl App {
             InputMode::Expr => "expr",
             InputMode::Scad => "scad",
         };
-        let mut status_parts = format!("{mode_label}");
+        let mut status_parts = mode_label.to_string();
         if let Some(ref info) = self.info {
             status_parts += &format!(
                 " | {} | {}n | {}C",
@@ -1293,7 +1287,7 @@ impl App {
         ];
 
         let mut layers: Vec<Element<Message>> = vec![base_layout.into()];
-        if let Some(_) = self.context_menu_pos {
+        if self.context_menu_pos.is_some() {
             layers.push(
                 mouse_area(container(Space::new()).width(Fill).height(Fill))
                     .on_press(Message::DismissOverlay)
@@ -1443,7 +1437,7 @@ fn ttip<'a>(content: impl Into<Element<'a, Message>>, tip: &str) -> Element<'a,
     .into()
 }
 
-// === Free functions (unchanged from original) ===
+// === Free functions ===
 
 fn build_notebook_md(src: &str) -> String {
     let mut md = String::new();
@@ -1802,7 +1796,6 @@ const TRANSFORM_FUNCS: &[&str] = &[
     "rx", "ry", "rz", "mx", "my", "mz", "mov", "move",
 ];
 
-/// Accumulated transform state — at most one of each kind.
 #[derive(Default)]
 struct TransformStack {
     translate: Option<(f32, f32, f32)>,
@@ -1815,8 +1808,6 @@ struct TransformStack {
     mirror_z: bool,
 }
 
-/// Peel all outermost transform wrappers off an expression,
-/// accumulating them into a TransformStack.
 fn peel_transforms<'a>(expr: &'a str, stack: &mut TransformStack) -> &'a str {
     let mut current = expr.trim();
     loop {
@@ -1859,7 +1850,6 @@ fn peel_transforms<'a>(expr: &'a str, stack: &mut TransformStack) -> &'a str {
     current
 }
 
-/// Apply the new action to a TransformStack.
 fn apply_action(stack: &mut TransformStack, action: &TransformAction) {
     match action {
         TransformAction::Translate(dx, dy, dz) => {
@@ -1887,8 +1877,7 @@ fn apply_action(stack: &mut TransformStack, action: &TransformAction) {
     }
 }
 
-/// Re-wrap an inner expression with the collapsed transform stack.
-/// Order: mirror → scale → rotate → translate (inside-out).
+// Order: mirror -> scale -> rotate -> translate (inside-out)
 fn recompose_transforms(inner: &str, stack: &TransformStack) -> String {
     let mut result = inner.to_string();
 
@@ -1927,7 +1916,6 @@ fn recompose_transforms(inner: &str, stack: &TransformStack) -> String {
     result
 }
 
-/// Peel all transforms, merge the new action, recompose as at-most-one-of-each.
 fn apply_transform_collapsed(expr: &str, action: &TransformAction) -> String {
     let mut stack = TransformStack::default();
     let inner = peel_transforms(expr, &mut stack);
diff --git a/crates/cord-gui/src/viewport.rs b/crates/cord-gui/src/viewport.rs
index 62fdc91..f6a1051 100644
--- a/crates/cord-gui/src/viewport.rs
+++ b/crates/cord-gui/src/viewport.rs
@@ -180,7 +180,6 @@ impl<Message: 'static> shader::Program<Message> for SdfViewport {
     }
 }
 
-/// Mutable camera updates called from App::update
 impl SdfViewport {
     pub fn on_drag(&mut self, dx: f32, dy: f32) {
         let sensitivity = 0.005;