feat(agent): add LiveLlmProvider abstraction and Gemini Live WebSocket provider

agent/app/src/androidTest/java/com/example/appfunctions/agent/data/GeminiLiveProviderImplIntegrationTest.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.appfunctions.agent.data
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.example.appfunctions.agent.domain.LiveLlmProvider
+import io.ktor.client.HttpClient
+import org.junit.runner.RunWith
+
+/** Integration tests for [GeminiLiveProviderImpl]. */
+@RunWith(AndroidJUnit4::class)
+class GeminiLiveProviderImplIntegrationTest : LiveLlmProviderIntegrationTestBase() {
+    override val apiKeyArgumentKey: String = "gemini_api_key"
+    override val inputSampleRateHz: Int = GeminiLiveProviderImpl.DEFAULT_INPUT_SAMPLE_RATE_HZ
+    override val voiceName: String = GeminiLiveVoice.DEFAULT.apiName
+
+    override fun createProvider(httpClient: HttpClient): LiveLlmProvider {
+        return GeminiLiveProviderImpl(
+            httpClient = httpClient,
+            toolConverter = GeminiLiveToolConverter(GeminiToolConverter()),
+        )
+    }
+}