diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e054c15..f89093b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ on:
     branches: [ main, devel, 'release/**' ]
     paths:
       - 'wildedge/**'
-      - 'sample/**'
+      - 'samples/**'
       - 'gradle/**'
       - 'gradle.properties'
       - 'detekt.yml'
@@ -14,7 +14,7 @@ on:
     branches: [ main, devel ]
     paths:
       - 'wildedge/**'
-      - 'sample/**'
+      - 'samples/**'
       - 'gradle/**'
       - 'gradle.properties'
       - 'detekt.yml'
@@ -92,3 +92,27 @@ jobs:
         with:
           name: detekt-results
           path: build/reports/detekt/
+
+  proguard:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+
+      - uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-read-only: true
+
+      - name: Build release APK
+        run: ./gradlew :samples:image-classification:assembleRelease --no-daemon
+
+      - name: Upload release APK
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: release-apk
+          path: samples/image-classification/build/outputs/apk/release/
diff --git a/samples/image-classification/build.gradle.kts b/samples/image-classification/build.gradle.kts
index 5a0c7be..f2d3529 100644
--- a/samples/image-classification/build.gradle.kts
+++ b/samples/image-classification/build.gradle.kts
@@ -25,6 +25,16 @@ android {
         resValue("string", "wildedge_dsn", localProps.getProperty("wildedge.dsn", ""))
     }
 
+    buildTypes {
+        release {
+            // No extra rules: relies on the library's consumer-rules.pro.
+            // If R8 strips or renames anything the app references, the build fails.
+            isMinifyEnabled = true
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+            signingConfig = signingConfigs.getByName("debug")
+        }
+    }
+
     buildFeatures {
         viewBinding = true
     }
diff --git a/samples/image-classification/proguard-rules.pro b/samples/image-classification/proguard-rules.pro
new file mode 100644
index 0000000..a3536d7
--- /dev/null
+++ b/samples/image-classification/proguard-rules.pro
@@ -0,0 +1,7 @@
+# compileOnly framework dependencies used by example files included via sourceSets.
+# These classes are not in the APK at runtime, so suppress R8 missing-class warnings.
+-dontwarn com.google.ai.client.generativeai.**
+-dontwarn com.google.ai.edge.litertlm.**
+-dontwarn ai.onnxruntime.**
+-dontwarn com.google.android.gms.tasks.**
+-dontwarn com.google.mlkit.**
diff --git a/wildedge/consumer-rules.pro b/wildedge/consumer-rules.pro
index e69de29..6ad8c98 100644
--- a/wildedge/consumer-rules.pro
+++ b/wildedge/consumer-rules.pro
@@ -0,0 +1,38 @@
+# WildEdge Android SDK — consumer ProGuard / R8 rules.
+# Gradle merges this file into the host app's minification config automatically.
+
+# ---- Core API ----
+-keep class dev.wildedge.sdk.WildEdge { *; }
+-keep interface dev.wildedge.sdk.WildEdgeClient { *; }
+-keep class dev.wildedge.sdk.ModelHandle { public *; }
+-keep class dev.wildedge.sdk.ModelInfo { *; }
+-keep enum dev.wildedge.sdk.InputModality { *; }
+-keep enum dev.wildedge.sdk.OutputModality { *; }
+-keep class dev.wildedge.sdk.Accelerator { *; }
+-keep class dev.wildedge.sdk.FeedbackType { *; }
+-keep class dev.wildedge.sdk.FeedbackType$* { *; }
+-keep class dev.wildedge.sdk.MemoryWarningLevel { *; }
+-keep class dev.wildedge.sdk.MemoryWarningLevel$* { *; }
+-keep enum dev.wildedge.sdk.SpanKind { *; }
+-keep enum dev.wildedge.sdk.SpanStatus { *; }
+-keep class dev.wildedge.sdk.Span { *; }
+-keep class dev.wildedge.sdk.SpanContext { *; }
+
+# ContentProvider used for auto-init — Android instantiates it by class name from the manifest.
+-keep class dev.wildedge.sdk.WildEdgeInitProvider
+
+# ---- Event meta classes ----
+# These data classes are constructed by host app code and passed to trackInference via toMap().
+-keep class dev.wildedge.sdk.events.** { *; }
+
+# ---- Integration decorators ----
+-keep class dev.wildedge.sdk.integrations.TFLiteDecorator { *; }
+-keep class dev.wildedge.sdk.integrations.OrtDecorator { *; }
+-keep class dev.wildedge.sdk.integrations.LiteRtEngineDecorator { *; }
+-keep class dev.wildedge.sdk.integrations.PlayServicesTfliteDecorator { *; }
+
+# ---- Kotlin extension functions ----
+# Kotlin compiles file-level functions to static methods on a class named after the file (*Kt).
+# Without these rules, R8 renames or removes the classes and all extension calls break.
+-keep class dev.wildedge.sdk.*Kt { *; }
+-keep class dev.wildedge.sdk.integrations.*Kt { *; }