Import 294 songs from Carmina Leonis PDF

Add import-songs.py script that extracts songs from the PDF text
and generates .tex files with leadsheets format. Adds song
properties for all reference books (BuLiBu, BuLiBuII, CL, SwA,
Barde, LiBock). Generates all-songs.tex with alphabetical inputs.

Note: Chord alignment is approximate from PDF extraction and
may need manual review for some songs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

songbook-style.sty

@@ -26,6 +26,12 @@
 \ExplSyntaxOff
 \useleadsheetslibraries{chordnames,chords,shorthands,properties,templates,translations,songs}
 
+% --- Repeat markers (used by shorthands library for |: and :| ) ---
+\providecommand{\leftrepeat}{|:\,}
+\providecommand{\rightrepeat}{\,:|}
+\providecommand{\leftrightrepeat}{|:\,:|}
+
+
 % --- Font setup ---
 \setmainfont{TeX Gyre Heros}
 \newfontfamily\frakfont{UnifrakturMaguntia-Book}[Path=fonts/,Extension=.ttf]
@@ -47,6 +53,12 @@
 \definesongproperty{note}
 \definesongproperty{mundorgel}
 \definesongproperty{pfadfinderliederbuch}
+\definesongproperty{bulibu}
+\definesongproperty{bulibull}
+\definesongproperty{cl}
+\definesongproperty{swa}
+\definesongproperty{barde}
+\definesongproperty{libock}
 
 % --- leadsheets settings ---
 \setleadsheets{
@@ -56,6 +68,7 @@
   chorus/named = false,
   chorus/numbered = false,
   after-song = \songendsection,
+  bar-shortcuts = false,
 }
 
 \setchords{