I added simulated telescope noise to ExoSim’s light curve. There is now an Observation Noise control from 0 to 300 ppm. At 0 ppm, the telescope data is perfectly clean. Increasing it adds scattered measurement points around the theoretical transit curve, making smaller brightness dips harder to identify. The graph now separates the clean theoretical model from the simulated telescope observation. I also added an observed-flux reading, a noise-floor measurement, and replaced the old pill-shaped detection badge with a flatter instrument-style status display. The playback controls, orbital animation, current measurement marker, and transit detection still remain synchronized.