diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..dc2412f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  test:
+    runs-on: macos-latest
+    timeout-minutes: 60
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Java
+        uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v6
+
+      - name: Run tests
+        run: ./gradlew :signaturepad:allTests
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 2ffbf6b..a22c283 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -26,7 +26,7 @@ jobs:
         run: ./gradlew :signaturepad:build
 
       - name: Publish release
-        run: ./gradlew publishToMavenCentral --no-configuration-cache
+        run: ./gradlew :signaturepad:publishToMavenCentral --no-configuration-cache
         if: success()
         env:
           ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
diff --git a/build.gradle.kts b/build.gradle.kts
index 09c3180..ee8be74 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,4 +1,7 @@
 import com.vanniktech.maven.publish.MavenPublishBaseExtension
+import org.jetbrains.kotlin.gradle.targets.js.yarn.YarnLockMismatchReport
+import org.jetbrains.kotlin.gradle.targets.js.yarn.YarnPlugin
+import org.jetbrains.kotlin.gradle.targets.js.yarn.YarnRootExtension
 
 plugins {
     alias(libs.plugins.kotlin.multiplatform) apply false
@@ -13,6 +16,12 @@ tasks.wrapper {
     gradleVersion = "9.5.1"
 }
 
+// kotlin-js-store/yarn.lock resolves to slightly different contents across platforms (e.g. CI
+// macOS vs a Linux dev machine), so don't fail the build on a mismatch — warn instead.
+plugins.withType<YarnPlugin> {
+    the<YarnRootExtension>().yarnLockMismatchReport = YarnLockMismatchReport.WARNING
+}
+
 allprojects {
     // Credentials must be added to ~/.gradle/gradle.properties per
     // https://vanniktech.github.io/gradle-maven-publish-plugin/central/#secrets
diff --git a/signaturepad/build.gradle.kts b/signaturepad/build.gradle.kts
index 5d3dc55..97cc0cc 100644
--- a/signaturepad/build.gradle.kts
+++ b/signaturepad/build.gradle.kts
@@ -1,6 +1,9 @@
-@file:OptIn(ExperimentalWasmDsl::class)
+@file:OptIn(ExperimentalWasmDsl::class, KotlinNativeCacheApi::class)
 
 import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
+import org.jetbrains.kotlin.gradle.plugin.mpp.DisableCacheInKotlinVersion
+import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeCacheApi
+import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 
 plugins {
     alias(libs.plugins.android.kotlin.multiplatform.library)
@@ -30,6 +33,18 @@ kotlin {
     iosArm64()
     iosSimulatorArm64()
 
+    // The Kotlin/Native compiler cache holds Compose ui-uikit objects that hard-reference newer
+    // UIKit symbols (e.g. UIViewLayoutRegion), which fail to link the iOS test binary. Disable the
+    // cache for the native targets so those symbols resolve correctly.
+    targets.withType<KotlinNativeTarget>().configureEach {
+        binaries.all {
+            disableNativeCache(
+                version = DisableCacheInKotlinVersion.`2_4_0`,
+                reason = "Compose ui-uikit cache references newer UIKit symbols that fail to link",
+            )
+        }
+    }
+
     explicitApi()
 
     jvmToolchain(17)
diff --git a/signaturepad/src/jvmTest/kotlin/com/seanproctor/signaturepad/SignaturePadDrawingTest.kt b/signaturepad/src/jvmTest/kotlin/com/seanproctor/signaturepad/SignaturePadDrawingTest.kt
index 2611687..113ed01 100644
--- a/signaturepad/src/jvmTest/kotlin/com/seanproctor/signaturepad/SignaturePadDrawingTest.kt
+++ b/signaturepad/src/jvmTest/kotlin/com/seanproctor/signaturepad/SignaturePadDrawingTest.kt
@@ -24,6 +24,7 @@ class SignaturePadDrawingTest {
     @Test
     fun clear_removesPreviouslyDrawnStrokes() {
         val state = SignaturePadStateImpl()
+        state.setSize(100, 100) // points outside the bounds are ignored, so give the pad a size
         state.gestureStarted(Offset(0f, 0f))
         listOf(Offset(10f, 10f), Offset(20f, 0f), Offset(30f, 10f)).forEach { state.gestureMoved(it) }
         assertTrue(drawTo(state).drawnStrokes.isNotEmpty(), "precondition: signature has strokes")
@@ -36,6 +37,7 @@ class SignaturePadDrawingTest {
     @Test
     fun gesture_needsFourPointsBeforeFirstCurve() {
         val state = SignaturePadStateImpl()
+        state.setSize(100, 100)
         // gestureStarted seeds two points; one move gives three — not enough for a cubic bezier.
         state.gestureStarted(Offset(0f, 0f))
         state.gestureMoved(Offset(10f, 10f))
@@ -46,6 +48,7 @@ class SignaturePadDrawingTest {
     @Test
     fun gesture_producesOneCurvePerMoveAfterTheFirst() {
         val state = SignaturePadStateImpl()
+        state.setSize(100, 100)
         state.gestureStarted(Offset(0f, 0f))
         // Well-separated points so each curve has a non-zero length and is actually drawn.
         val moves = listOf(Offset(10f, 10f), Offset(20f, 0f), Offset(30f, 10f), Offset(40f, 0f))