fix: ui.py — force PYTHONIOENCODING=utf-8 and NO_COLOR=1 in subprocess to prevent Windows cp1252 crash"

fix: ui.py — fix dry run button by loading .env before subprocess and handling async properly"

fix: ui.py — compatible with Gradio 6.x (remove show_copy_button, move theme to launch)"

feat: add Gradio UI for viewing generated alphas with timestamps, copy button, and live generation