fix: increase verse spacing default from 4mm to 6mm (Closes #24) (#27)

model/src/main/kotlin/de/pfadfinder/songbook/model/BookConfig.kt

@@ -50,7 +50,7 @@ data class FontSpec(
 data class LayoutConfig(
     val margins: Margins = Margins(),
     val chordLineSpacing: Float = 1f,    // mm – gap between chord line and lyrics text
-    val verseSpacing: Float = 4f,         // mm
+    val verseSpacing: Float = 6f,         // mm – gap between consecutive song sections
     val pageNumberPosition: String = "bottom-outer",
     val metadataLabels: String = "abbreviated",  // "abbreviated" (M:/T:) or "german" (Worte:/Weise:)
     val metadataPosition: String = "top"  // "top" (after title) or "bottom" (bottom of last page)

songbook.yaml

@@ -22,8 +22,8 @@ fonts:
 
 layout:
   margins: { top: 15, bottom: 15, inner: 20, outer: 12 }
-  chord_line_spacing: 3
-  verse_spacing: 4
+  chord_line_spacing: 1
+  verse_spacing: 6
   page_number_position: bottom-outer
 
 images: