Add build script and fix errors

main.tex

@@ -5,7 +5,7 @@
 \usepackage{datetime}
 \usepackage[inkscapeversion=1]{svg}
 
-\addbibresource{doc.bib}
+\addbibresource{references.bib}
 
 \setbeamerfont{footnote}{size=\tiny}
 

monitor.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+latexmk -lualatex -latexoption=-halt-on-error -shell-escape -pvc -quiet -output-directory=build main.tex

spnotes.tex

@@ -0,0 +1,29 @@
+% create a new file handle
+\newwrite\pdfpcnotesfile
+
+% open file on \begin{document}
+\AtBeginDocument{%
+    \immediate\openout\pdfpcnotesfile\jobname-Notizen.txt.tmp\relax
+    \immediate\write\pdfpcnotesfile{}
+}
+% define a # https://tex.stackexchange.com/a/37757/10327
+\begingroup
+    \catcode`\#=12
+    \gdef\hashchar{#}%
+\endgroup
+% define command \pnote{} that works exactly like \note but
+% additionally writes notes to file in pdfpc readable format
+\newcommand{\spnote}[1]{%
+    % keep normal notes working
+    \note{#1}%
+    % write notes to file
+    \begingroup
+        \let\#\hashchar
+        %\immediate\write\pdfpcnotesfile{\#\theframenumber\#\unexpanded{#1}}%
+        \immediate\write\pdfpcnotesfile{\#\thepage\#\unexpanded{#1}}%
+    \endgroup
+}
+% close file on \end{document}
+\AtEndDocument{%
+    \immediate\closeout\pdfpcnotesfile
+}