presentation.org: remove frame hack, use org-beamer-frame-default-options

- REMOVED: renewenvironment{frame} hack (broke frame titles with H:2)
- allowframebreaks now via org-beamer-frame-default-options in config.el
  (ox-beamer adds it properly to each generated frame)
- Kept: adjustbox for tables (proven working)
- Kept: Kyndryl colors, AtBeginSection{}, logo, rowcolors

templates/presentation.org

@@ -11,11 +11,6 @@
 
 #+BEAMER_THEME: Madrid
 
-# -- allowframebreaks: auto-split long slides ----------------------------------
-#+LATEX_HEADER: \let\oldframe\frame
-#+LATEX_HEADER: \let\endoldframe\endframe
-#+LATEX_HEADER: \renewenvironment{frame}[1][]{\oldframe[allowframebreaks,#1]}{\endoldframe}
-
 # -- Encoding, fonts -----------------------------------------------------------
 #+LATEX_HEADER: \usepackage[english]{babel}
 #+LATEX_HEADER: \usepackage[T1]{fontenc}
@@ -39,27 +34,25 @@
 #+LATEX_HEADER: \setbeamercolor{item}{fg=kyndrylRed}
 #+LATEX_HEADER: \setbeamercolor{subitem}{fg=kyndrylRed!80}
 
-# -- Suppress empty section title slides (H:2 needs this) ---------------------
+# -- Suppress empty section title slides (H:2 generates them) -----------------
 #+LATEX_HEADER: \AtBeginSection{}
 #+LATEX_HEADER: \AtBeginSubsection{}
 
 # -- Navigation ----------------------------------------------------------------
 #+LATEX_HEADER: \setbeamertemplate{navigation symbols}{}
 #+LATEX_HEADER: \setbeamertemplate{footline}[frame number]
-#+LATEX_HEADER: \setbeamertemplate{frametitle continuation}{}
 
 # -- Logo on title page --------------------------------------------------------
 #+LATEX_HEADER: \titlegraphic{\includegraphics[width=0.15\textwidth]{~/org/templates/logo.png}}
 
-# -- Tabulky: adjustbox (puvodni fungujici reseni) -----------------------------
-# config.el tabularx filter is skipped for beamer → tables stay as plain tabular
+# -- Tabulky: adjustbox (proven working) ---------------------------------------
+# config.el my/org-latex-fix-tabularx skips beamer → tables stay plain tabular
 # adjustbox scales them to fit slide width
 #+LATEX_HEADER: \usepackage{adjustbox}
 #+LATEX_HEADER: \usepackage{array}
 #+LATEX_HEADER: \usepackage{booktabs}
 #+LATEX_HEADER: \usepackage{colortbl}
 #+LATEX_HEADER: \usepackage{etoolbox}
-# Stridave barvy radku
 #+LATEX_HEADER: \AtBeginEnvironment{tabular}{\rowcolors{1}{tableOdd}{tableEven}}
 
 #+LATEX_HEADER: \let\orgoldtabular\tabular
@@ -85,5 +78,7 @@
 
 # ------------------------------------------------------------------------------
 # Obsah prezentace
-# (* = sekce/logicke skupiny, ** = jednotlive slidy)
+# (* = sekce, ** = slidy — H:2)
+# Allowframebreaks: set via org-beamer-frame-default-options in config.el
+# Pro dlouhe slidy muzes pridat :BEAMER_opt: shrink per-heading
 # ------------------------------------------------------------------------------