custom-thin-media-slider

A slim seek bar with a buffered-progress track behind it, built from Material3's Slider with custom track and thumb slots — including the fraction-not-your-own-scale rule that keeps the thumb from pinning at the end, and the state gate that stops incoming playback position from fighting the drag. Use when a seek bar renders full or empty regardless of position, when the thumb snaps back while dragging, when a thin…