Add ZenClient.extractCloudAssets() that copies panel.png, ptr.png, lie.wav and truth.wav from /assets/zen/cloud_assets/ on the classpath into ConfigManager.CONFIG_DIR (~/.zen/configs). Existing files are left untouched so user-replaced assets stick around. Called from init() right after ConfigManager is constructed, since LieDetector's TextureUtil/SoundUtil look up these files there. Co-Authored-By: Claude Opus 4.7 <[email protected]>