Remove paragraph indentation and Carmina Leonis from song footer

- Set \parindent to 0pt for clean left-aligned text
- Remove current book column from song page footer (keep only
  reference books: BuLiBu, CL gr., SwA, Barde, LiBock)

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

songbook-style.sty

@@ -71,6 +71,9 @@
   bar-shortcuts = false,
 }
 
+% --- No paragraph indentation (matches reference style) ---
+\setlength{\parindent}{0pt}
+
 \setchords{
   format = \small,
 }
@@ -220,14 +223,13 @@
   \endgroup
   \vspace{3mm}%
   \begingroup\footnotesize\centering
-    \begin{tabular}{cccccc}
-      BuLiBu & CL (gr.) & SwA & Barde & LiBock & Carmina Leonis \\
+    \begin{tabular}{ccccc}
+      BuLiBu & CL (gr.) & SwA & Barde & LiBock \\
       \ifsongproperty{bulibu}{\songproperty{bulibu}}{} &
       \ifsongproperty{cl}{\songproperty{cl}}{} &
       \ifsongproperty{swa}{\songproperty{swa}}{} &
       \ifsongproperty{barde}{\songproperty{barde}}{} &
-      \ifsongproperty{libock}{\songproperty{libock}}{} &
-      \thepage
+      \ifsongproperty{libock}{\songproperty{libock}}{}
     \end{tabular}\par
   \endgroup
   \newpage