Convert HTML into a high-fidelity PPTX deck using a real browser engine (Playwright/Chromium). Each `.slide` element in the HTML becomes one pptx page (rendered as a 16:9 1920×1080 retina image), so any CSS layout — flex/grid, webfonts, gradients, SVG — survives intact. Also ships a local live editor (`edit_html.py`) so the user can tweak HTML in the browser and one-click export PPTX. Trigger when the user asks to "用 HTML 做 PPT", "html 转 pptx", "html2pptx", "html slides", "html 幻灯片", "把这个 html 导出成 ppt", "edit html and export ppt", "build a deck from html", or hands you an HTML file with `.slide` sections.
