Renders a Reveal.js slide presentation from query result rows, where each row becomes a slide section.
REVEAL — set as ReportType in def_report.
def Render(self, Param1="", Param2="", Param3="") -> str:
Parameters are unused. When the result set has more than one row, each row becomes a vertical slide group (<section>) and each column within it becomes a nested slide. When there is only one row, each column becomes a top-level slide. Cell content is processed through process_text. Returns an HTML string.
Loads revealjs2/dist/reveal.css, revealjs2/dist/theme/black.css, and revealjs2/dist/reveal.js from the local resource path. The presentation is initialised with center: false and sized to fill the viewport height (100vh). None column values are skipped.