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The library browser was browse-only — the A button (and a tap) did nothing. Wire it to connect + boot straight into the selected title: thread a `launch` id (the store-qualified library id `steam:<appid>` / `custom:<id>`) through nativeConnect → NativeClient's Hello.launch (was hardcoded None), add a shared connectToHost() the ConnectScreen and the library launcher both use, and have LibraryScreen dial the host with launch=game.id on A / tap — with a launching overlay + an "A Launch" hint. Verified: native compiles (cargo-ndk arm64), app+kit Kotlin compiles (gradle, 3 ABIs). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>