chore(main): release 0.6.0

[adk-java-releases-bot]

🤖 I have created a release beep boop

0.6.0 (2026-07-17)

Features

• a2a: add an A2A v1.0 client for JVM and deprecate the v0.3 JvmA2AAgent (54feaf9)
• add callbackContextData to InvocationContext (723c814)
• add latestPromptTokenCount helper for token-threshold compaction (8c28b7e)
• add on-device ML Kit Gemini Nano multi-turn chat Android example (e0552ce)
• add token-threshold fields to EventsCompactionConfig (7668206)
• add TokenThresholdEventCompactor tail-retention strategy (a667bcf)
• add VertexAiRagRetrieval tool for Gemini-native RAG (f6f68d6)
• core: migrate from the Java Gen AI SDK to the Kotlin Gen AI SDK (067dae1)
• plugins: add DebugLoggingPlugin and align LoggingPlugin with ADK Python (ca22048)
• round-trip GenerateContentConfig labels and support routingConfig (d65becd)
• run token-threshold compaction before model calls (4feb461)
• serialization: expose the shared kotlinx Json instance and Any<->JsonElement helpers (91419ad)
• set the ADK version on the telemetry instrumentation scope (b50e621)

Bug Fixes

• align Ktor and kotlinx-coroutines with the GenAI SDK's Ktor 2.x (c94daef)
• clear streaming Dev UI error (97cf537)
• Fixed the resolveScopedArtifactDir function where jvm (in windows) ignoring path which start with '/' as absolute path. (3a773ed)
• generate function-call ids and re-attach thought signatures in the streaming aggregator (007bc4c)
• handle window insets in the Android examples (ee48523)
• keep Android example screens alive across rotation (852fab7)
• keep retained events visible at a same-millisecond compaction boundary (11298af)
• logging: stop logging sensitive data outside of the opt-in logging plugins (39e79ca)
• nest engine spans under the caller's active span (a8cca93)
• pin published kotlin-stdlib to 2.1 for Kotlin 2.1 consumer compatibility (7342e3d)
• preserve Firebase thought signatures across session serialization (7a63ee1)
• reassemble streamed function-call arguments in Gemini streaming (36add61)
• recover compacted function calls during prompt assembly (fc31aba)
• seed AgentTool child session from parent session state (64f79e6)
• unify JVM/Android trace payload JSON via kotlinx serialization (4585b47)

Documentation

• mlkit: document existing GenaiPrompt behaviour (536873f)

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