Release build of ExerciseSampleCompose crashes

[jluebbe]

Which sample is this for?
ExerciseSampleCompose

Describe the bug
When built in release mode, the example crashes on startup with:

2025-11-15 22:24:53.011  2913-2922  Binder                  com.example.exercisecompose          W  Caught a RuntimeException from the binder stub implementation. (Ask Gemini)
java.lang.RuntimeException: Field exerciseInfo_ for u1.T0 not found. Known fields are [public u1.b0 u1.T0.e, public static final u1.T0 u1.T0.f, public static volatile y2.v u1.T0.g]
	at y2.W.J(Unknown Source:69)
	at y2.W.B(Unknown Source:714)
	at y2.W.A(Unknown Source:4)
	at y2.b0.a(Unknown Source:122)
	at y2.w.n(Unknown Source:18)
	at O1.a.createFromParcel(Unknown Source:24)
	at android.os.Parcel.readTypedObject(Parcel.java:4325)
	at p1.a.onTransact(Unknown Source:54)
	at android.os.Binder.execTransactInternal(Binder.java:1426)
	at android.os.Binder.execTransact(Binder.java:1365)

With -dontobfuscate I get:

2025-11-15 22:08:52.203 10599-10610 Binder                  com.example.exercisecompose          W  Caught a RuntimeException from the binder stub implementation. (Ask Gemini)
java.lang.RuntimeException: Field bitField0_ for androidx.health.services.client.proto.ResponsesProto$ExerciseInfoResponse not found. Known fields are [public androidx.health.services.client.proto.DataProto$ExerciseInfo androidx.health.services.client.proto.ResponsesProto$ExerciseInfoResponse.exerciseInfo_, public static final androidx.health.services.client.proto.ResponsesProto$ExerciseInfoResponse androidx.health.services.client.proto.ResponsesProto$ExerciseInfoResponse.DEFAULT_INSTANCE, public static volatile com.google.protobuf.GeneratedMessageLite$DefaultInstanceBasedParser androidx.health.services.client.proto.ResponsesProto$ExerciseInfoResponse.PARSER]
	at com.google.protobuf.MessageSchema.reflectField(Unknown Source:69)
	at com.google.protobuf.MessageSchema.newSchemaForRawMessageInfo(Unknown Source:905)
	at com.google.protobuf.MessageSchema.newSchema(Unknown Source:4)
	at com.google.protobuf.Protobuf.schemaFor(Unknown Source:122)
	at com.google.protobuf.GeneratedMessageLite.parseFrom(Unknown Source:18)
	at androidx.fragment.app.FragmentState$1.createFromParcel(Unknown Source:30)
	at android.os.Parcel.readTypedObject(Parcel.java:4207)
	at androidx.health.services.client.impl.internal.ExerciseInfoCallback.onTransact(Unknown Source:54)
	at android.os.Binder.execTransactInternal(Binder.java:1396)
	at android.os.Binder.execTransact(Binder.java:1335

When I add -keep class * extends com.google.protobuf.GeneratedMessageLite { *; } to proguard-rules.pro, the error is gone.

To Reproduce
Steps to reproduce the behavior:

1. Switch to release build variant
2. Start application in Wear OS Emulator API 35
3. See error in logcat

Expected behavior
Application does not crash.

Device Info (please complete the following information):

• Device: Pixel Watch 1 LTE, Wear OS Emulators API 35 & 36
• OS: Wear OS 5.1 and 6

Additional context
This seems related to #62 (comment)