presentation.org: clean rewrite — no frame/tabular hacks

- Removed renewenvironment{frame} hack (caused empty slides)
  → allowframebreaks via org-beamer-frame-default-options in config.el
- Removed renewenvironment{tabular}/adjustbox hack (didn't scale properly)
  → resizebox via my/org-beamer-resizebox-tables filter in config.el
- Kept: Madrid theme, Kyndryl colors, AtBeginSection{}, rowcolors, logo

templates/presentation.org

@@ -1,3 +1,5 @@
+#+TITLE:
+#+SUBTITLE:
 #+AUTHOR: Martin Sukaný
 #+DATE: \today
 #+LANGUAGE: en
@@ -35,52 +37,20 @@
 #+LATEX_HEADER: \setbeamercolor{item}{fg=kyndrylRed}
 #+LATEX_HEADER: \setbeamercolor{subitem}{fg=kyndrylRed!80}
 
-# -- Navigation: remove symbols -----------------------------------------------
+# -- Navigation: remove symbols, suppress empty section title slides ----------
 #+LATEX_HEADER: \setbeamertemplate{navigation symbols}{}
-
-# -- Suppress empty section title slides (H:2 generates them by default) ------
 #+LATEX_HEADER: \AtBeginSection{}
 #+LATEX_HEADER: \AtBeginSubsection{}
 
-# -- Frame overflow: auto-shrink + split when content doesn't fit -------------
-#+LATEX_HEADER: \let\oldframe\frame
-#+LATEX_HEADER: \let\endoldframe\endframe
-#+LATEX_HEADER: \renewenvironment{frame}[1][]{\oldframe[allowframebreaks,shrink=15,#1]}{\endoldframe}
-#+LATEX_HEADER: \setbeamertemplate{frametitle continuation}{}
-
 # -- Logo on title page --------------------------------------------------------
 #+LATEX_HEADER: \usepackage{graphicx}
 #+LATEX_HEADER: \titlegraphic{\includegraphics[width=0.15\textwidth]{~/org/templates/logo.png}}
 
-# -- Tabulky (shodne s document.org, BEZ longtable/ltablex — beamer nepodporuje)
+# -- Tabulky: rowcolors for alternating rows -----------------------------------
 #+LATEX_HEADER: \usepackage{array}
-#+LATEX_HEADER: \usepackage{tabularx}
 #+LATEX_HEADER: \usepackage{booktabs}
 #+LATEX_HEADER: \usepackage{colortbl}
-#+LATEX_HEADER: \usepackage{etoolbox}
-#+LATEX_HEADER: \usepackage{ragged2e}
-# Stridave barvy radku
-#+LATEX_HEADER: \AtBeginEnvironment{tabularx}{\rowcolors{1}{tableOdd}{tableEven}}
 #+LATEX_HEADER: \AtBeginEnvironment{tabular}{\rowcolors{1}{tableOdd}{tableEven}}
-# Typy sloupcu: Y=wrap+levy, Z=wrap+stred, R=wrap+pravy
-#+LATEX_HEADER: \newcolumntype{Y}{>{\RaggedRight\arraybackslash}X}
-#+LATEX_HEADER: \newcolumntype{Z}{>{\Centering\arraybackslash}X}
-#+LATEX_HEADER: \newcolumntype{R}{>{\RaggedLeft\arraybackslash}X}
-
-# -- Beamer table scaling (fit tables to slide width) --------------------------
-#+LATEX_HEADER: \usepackage{adjustbox}
-#+LATEX_HEADER: \let\orgoldtabular\tabular
-#+LATEX_HEADER: \let\orgendoldtabular\endtabular
-#+LATEX_HEADER: \renewenvironment{tabular}[1]{%
-#+LATEX_HEADER:   \begin{adjustbox}{max width=\linewidth,max totalheight=0.72\textheight,center}%
-#+LATEX_HEADER:   \small%
-#+LATEX_HEADER:   \setlength{\tabcolsep}{4pt}%
-#+LATEX_HEADER:   \renewcommand{\arraystretch}{1.15}%
-#+LATEX_HEADER:   \orgoldtabular{#1}%
-#+LATEX_HEADER: }{%
-#+LATEX_HEADER:   \orgendoldtabular%
-#+LATEX_HEADER:   \end{adjustbox}%
-#+LATEX_HEADER: }
 
 # -- Hyperlinks ----------------------------------------------------------------
 #+LATEX_HEADER: \usepackage{hyperref}
@@ -90,6 +60,9 @@
 #+LATEX_HEADER: \usepackage{listings}
 #+LATEX_HEADER: \lstset{backgroundcolor=\color{kyndrylLightGray},basicstyle=\ttfamily\scriptsize,breaklines=true,frame=single,rulecolor=\color{kyndrylGray}}
 
+# -- Frametitle continuation (no ugly "cont." on split frames) -----------------
+#+LATEX_HEADER: \setbeamertemplate{frametitle continuation}{}
+
 # ------------------------------------------------------------------------------
 # Obsah prezentace
 # ------------------------------------------------------------------------------