diff --git a/crates/presentar-core/build.rs b/crates/presentar-core/build.rs
index 3f65b9c..68fdd58 100644
--- a/crates/presentar-core/build.rs
+++ b/crates/presentar-core/build.rs
@@ -8,28 +8,58 @@ fn main() {
         let cdir = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("contracts");
         if let Ok(es) = std::fs::read_dir(&cdir) {
             #[derive(serde::Deserialize, Default)]
-            struct CY { #[serde(default)] equations: std::collections::BTreeMap<String, EY> }
+            struct CY {
+                #[serde(default)]
+                equations: std::collections::BTreeMap<String, EY>,
+            }
             #[derive(serde::Deserialize, Default)]
-            struct EY { #[serde(default)] preconditions: Vec<String>, #[serde(default)] postconditions: Vec<String> }
+            struct EY {
+                #[serde(default)]
+                preconditions: Vec<String>,
+                #[serde(default)]
+                postconditions: Vec<String>,
+            }
             let (mut tp, mut tq) = (0, 0);
             for e in es.flatten() {
                 let p = e.path();
-                if p.extension().and_then(|x| x.to_str()) != Some("yaml") { continue; }
-                if p.file_name().is_some_and(|n| n.to_string_lossy().contains("binding")) { continue; }
+                if p.extension().and_then(|x| x.to_str()) != Some("yaml") {
+                    continue;
+                }
+                if p.file_name()
+                    .is_some_and(|n| n.to_string_lossy().contains("binding"))
+                {
+                    continue;
+                }
                 println!("cargo:rerun-if-changed={}", p.display());
-                let s = p.file_stem().and_then(|x| x.to_str()).unwrap_or("x").to_uppercase().replace('-', "_");
+                let s = p
+                    .file_stem()
+                    .and_then(|x| x.to_str())
+                    .unwrap_or("x")
+                    .to_uppercase()
+                    .replace('-', "_");
                 if let Ok(c) = std::fs::read_to_string(&p) {
                     if let Ok(y) = serde_yaml_ng::from_str::<CY>(&c) {
                         for (n, eq) in &y.equations {
-                            let k = format!("CONTRACT_{}_{}", s, n.to_uppercase().replace('-', "_"));
+                            let k =
+                                format!("CONTRACT_{}_{}", s, n.to_uppercase().replace('-', "_"));
                             if !eq.preconditions.is_empty() {
-                                println!("cargo:rustc-env={k}_PRE_COUNT={}", eq.preconditions.len());
-                                for (i, v) in eq.preconditions.iter().enumerate() { println!("cargo:rustc-env={k}_PRE_{i}={v}"); }
+                                println!(
+                                    "cargo:rustc-env={k}_PRE_COUNT={}",
+                                    eq.preconditions.len()
+                                );
+                                for (i, v) in eq.preconditions.iter().enumerate() {
+                                    println!("cargo:rustc-env={k}_PRE_{i}={v}");
+                                }
                                 tp += eq.preconditions.len();
                             }
                             if !eq.postconditions.is_empty() {
-                                println!("cargo:rustc-env={k}_POST_COUNT={}", eq.postconditions.len());
-                                for (i, v) in eq.postconditions.iter().enumerate() { println!("cargo:rustc-env={k}_POST_{i}={v}"); }
+                                println!(
+                                    "cargo:rustc-env={k}_POST_COUNT={}",
+                                    eq.postconditions.len()
+                                );
+                                for (i, v) in eq.postconditions.iter().enumerate() {
+                                    println!("cargo:rustc-env={k}_POST_{i}={v}");
+                                }
                                 tq += eq.postconditions.len();
                             }
                         }
diff --git a/crates/presentar-terminal/src/app_tests.rs b/crates/presentar-terminal/src/app_tests.rs
index b58c7b3..bf688e4 100644
--- a/crates/presentar-terminal/src/app_tests.rs
+++ b/crates/presentar-terminal/src/app_tests.rs
@@ -1195,9 +1195,13 @@ fn test_testable_backend_enable_mouse_capture() {
     assert!(!backend.is_mouse_captured());
     backend.enable_mouse_capture().unwrap();
     assert!(backend.is_mouse_captured());
-    // Verify escape sequence was written
-    let output = backend.into_writer();
-    assert!(!output.is_empty());
+    // Verify escape sequence was written (Unix only — on Windows, crossterm
+    // uses the Console API instead of writing ANSI escape sequences)
+    #[cfg(not(target_os = "windows"))]
+    {
+        let output = backend.into_writer();
+        assert!(!output.is_empty());
+    }
 }
 
 #[test]
diff --git a/crates/presentar/tests/contract_traits.rs b/crates/presentar/tests/contract_traits.rs
index bd61e82..0ac4a01 100644
--- a/crates/presentar/tests/contract_traits.rs
+++ b/crates/presentar/tests/contract_traits.rs
@@ -9,9 +9,9 @@
 //! Run with: `cargo test --test contract_traits`
 
 use provable_contracts::traits::{
-    ActivationKernelV1, AdamwKernelV1, AttentionKernelV1, CrossEntropyKernelV1,
-    FlashAttentionV1, GqaKernelV1, LayernormKernelV1, MatmulKernelV1, RmsnormKernelV1,
-    RopeKernelV1, SiluKernelV1, SoftmaxKernelV1, SwigluKernelV1,
+    ActivationKernelV1, AdamwKernelV1, AttentionKernelV1, CrossEntropyKernelV1, FlashAttentionV1,
+    GqaKernelV1, LayernormKernelV1, MatmulKernelV1, RmsnormKernelV1, RopeKernelV1, SiluKernelV1,
+    SoftmaxKernelV1, SwigluKernelV1,
 };
 
 /// Marker struct for reference scalar kernel implementations.
@@ -189,7 +189,10 @@ fn rmsnorm_kernel_v1_properties() {
     // out ≈ [3/3.5355, 4/3.5355] ≈ [0.8485, 1.1314]
     assert!(out.len() == 2);
     let rms_out = (out.iter().map(|v| v * v).sum::<f32>() / out.len() as f32).sqrt();
-    assert!((rms_out - 1.0).abs() < 1e-3, "rmsnorm output should have ~unit RMS");
+    assert!(
+        (rms_out - 1.0).abs() < 1e-3,
+        "rmsnorm output should have ~unit RMS"
+    );
 }
 
 #[test]
@@ -221,7 +224,10 @@ fn cross_entropy_kernel_v1_properties() {
     }
     // exp(log_softmax) should sum to 1
     let sum_exp: f32 = lsm.iter().map(|v| v.exp()).sum();
-    assert!((sum_exp - 1.0).abs() < 1e-5, "exp(log_softmax) must sum to 1");
+    assert!(
+        (sum_exp - 1.0).abs() < 1e-5,
+        "exp(log_softmax) must sum to 1"
+    );
 
     // cross_entropy with one-hot target
     let targets = vec![0.0, 0.0, 1.0];