Build, integrate, and review Stream Chat, Video, and Feeds in Android apps. Use for Jetpack Compose, Android Studio, and Gradle project work - including Stream package setup, auth and token wiring, screen blueprints, read-only integration reviews before going live, AI assistants, voice agents and LLM chat (ChatGPT-style apps, streaming replies, thinking indicators, stop generating, tool calls, generative UI) with stream-chat-android-ai-compose and Stream Agents, and any follow-up Stream UI work such as adding screens, navigating between channel list and channel/message screens, channel tap handling, deep links, push routing, theming, custom channel/message UI, video calling flows (joining/starting calls, ringing, custom call controls and participant tiles), and Feeds surfaces (timeline, activity composer, threaded comments, follow graph / profile, notification feed, stories).