ddc5aaed0e
🤖 Agent: merged after verify passed; cloud_render, environment_render, weather_render and 923 client tests pass, with before/after screenshots of Complementary Unbound. Java shader packs get real eye brightness, custom uniforms, Iris's sun path and tilt, and clouds=off/sun/moon flags. Part of #944 (reported by brabus_); shadows and gbuffers still to come.