fix: composition map viewBox clipped last row

Height was derived from the capabilities column only; the functions column
(52px step) is taller and its last box + column labels fell outside the
viewBox. Size to the taller column plus label room.

src/components/CompositionMap.vue

@@ -26,7 +26,14 @@ const rstep = 52
 const capY = (i: number) => top + i * lstep + bh / 2
 const funcY = (i: number) => top + i * rstep + bh / 2
 
-const H = computed(() => top + props.composition.caps.length * lstep + 16)
+// viewBox height must fit whichever column is taller — the functions column
+// (rstep = 52) usually outruns the capabilities column (lstep = 40) — plus room
+// for the bottom labels. Sizing off caps.length alone clipped the last row.
+const H = computed(() => {
+  const leftBottom = top + (props.composition.caps.length - 1) * lstep + bh
+  const rightBottom = top + (props.composition.funcs.length - 1) * rstep + bh
+  return Math.max(leftBottom, rightBottom) + 26
+})
 
 const capIndex = computed(
   () =>