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Author: xaionaro@dx.center

README.md

@@ -339,6 +339,20 @@ flowchart TD
 | `make lint` | Run golangci-lint | golangci-lint |
 | `make clean` | Remove all generated files | -- |
 
+## E2E Test Verification
+
+Run `make test-emulator` to test against a connected device or emulator. Tests skip when `JNICTL_E2E_ADDR` is not set.
+
+<details>
+<summary>Verified platforms (click to expand)</summary>
+
+| Type | Device | Android | API | ABI | Build | Date | Passed | Total |
+|------|--------|---------|-----|-----|-------|------|--------|-------|
+| Phone | Pixel 8a | 16 | 36 | arm64-v8a | BP4A.260205.001 | 2026-03-14 | 21 | 21 |
+| Emulator | sdk_gphone64_x86_64 | 15 | 35 | x86_64 | | 2026-03-14 | 21 | 21 |
+
+</details>
+
 ## Adding a New Android API Package
 
 1. Create `spec/java/{package}.yaml` with the Java class, methods, and `go_import` path.

cmd/jniservice/JNIService.java

@@ -19,8 +19,15 @@ public static void main(String[] args) {
             System.err.println("jniservice: load failed: " + t);
             System.exit(1);
         }
-        // runServer (called from JNI_OnLoad) blocks until the gRPC server
-        // shuts down, so this point is reached only on clean exit.
-        System.err.println("jniservice: server exited");
+        System.err.println("jniservice: server started, waiting...");
+        // Keep the JVM alive so the Go goroutine serving gRPC can run.
+        // JNI_OnLoad starts the server in a goroutine and returns.
+        synchronized (JNIService.class) {
+            try {
+                JNIService.class.wait();
+            } catch (InterruptedException e) {
+                // Exit on interrupt.
+            }
+        }
     }
 }