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shahondin1624 4024d0e421 Rewrite songbook as pure LaTeX project (Carmina Leonis style)

Replace the Kotlin/Gradle multi-module pipeline with a pure LaTeX
songbook using the leadsheets package and LuaLaTeX. Style matches
the Carmina Leonis (CL6) scout songbook: Fraktur titles, chords
above lyrics, metadata at page bottom, reference book footer.

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

2026-04-01 08:23:57 +02:00

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CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Build Commands

# Build the songbook PDF (two-pass for TOC)
make

# Remove auxiliary files
make clean

# Remove everything including PDF
make distclean

Requires LuaLaTeX (TeX Live) and the leadsheets package.

Project Structure

songbook.tex          # Main document (title page, TOC, song inputs)
songbook-style.sty    # Style package (geometry, fonts, leadsheets config)
songs/                # One .tex file per song
fonts/                # Font files (UnifrakturMaguntia for titles)
images/               # Filler images (empty for now)
Makefile              # Build rules (lualatex, two passes)
output/               # Generated PDF (gitignored)

How It Works

Pure LaTeX songbook using the leadsheets package with LuaLaTeX. The style matches the Carmina Leonis songbook format:

Song titles in Fraktur/blackletter font (UnifrakturMaguntia)
Chords above lyrics in regular weight, black
No verse labels (verses separated by blank lines)
Metadata (Worte/Weise) at bottom of each song page
Reference book cross-references (MO, PfLB) in footer
Each song starts on a new page
A5 twoside format with page numbers at bottom-outer

Song Format

Each song uses the leadsheets song environment:

\begin{song}{
  title = Song Title,
  lyrics = Lyricist,
  composer = Composer,
  key = G,
  mundorgel = 42,
  pfadfinderliederbuch = 118,
  note = {Optional note text.},
}

\begin{verse}
\chord{G}Lyrics with \chord{D}chords above. \\
Next \chord{C}line here.
\end{verse}

\begin{verse}
Second verse without chords (or with).
\end{verse}

\end{song}

Important constraints:

Use \\ for line breaks within verses (not blank lines)
Never place two \chord{} commands without a space between them — split compound words with a hyphen: \chord{D}Abend- \chord{A}zeit.
Custom properties: alias, note, mundorgel, pfadfinderliederbuch
Verse types: verse (no label), verse* (for custom-labeled sections like Kanon, Ref.)
musicsymbols library skipped (requires musix11 font not installed)

Style Details (songbook-style.sty)

Page geometry: A5, margins (top 15mm, bottom 20mm, inner 20mm, outer 12mm)
Body font: TeX Gyre Heros (Helvetica clone)
Title font: UnifrakturMaguntia (Fraktur/blackletter, from fonts/ directory)
Chord format: small, regular weight, black
Song title template: Fraktur title only (metadata rendered at bottom via after-song hook)
Reference style based on Carmina Leonis (Pfadfinder scout songbook)

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