I'm a product design student. I'm not familiar with the terminal or writing code. Please build this for me with HTML, CSS, JavaScript and native Web Audio. Make a simple, usable browser page, with no external libraries or internet services. Sound should start only after I click. Use comfortable initial levels. I need to play with the result, not read code. Extend the sound machine with named scenes. A scene saves the environment, selected sources, levels, noise settings, movement, event timing and processing. Let me save, load, rename and delete my own scenes and keep them across reloads on this browser. Loading settings must not unexpectedly start sound before I press play. Preserve imported sounds if feasible; otherwise clearly explain what happens to session-only files. Include three distinct listening examples: a sheltered forest, a distant city at night and slow open water. They should have different emotional and musical characters, not just different labels.