Add marker helper (not currently used)

conduitpylib/viz/_build_quasiroman_arrow.py

@@ -0,0 +1,22 @@
+def build_quasiroman_arrow(n: int) -> str:
+    # Simple Roman numeral conversion using only I, V, and X
+    roman_parts = []
+    num = n
+    roman_parts.extend(["M"] * (num // 1000))  # Add 'X' for each multiple of 10
+    num %= 1000
+    roman_parts.extend(["D"] * (num // 500))  # Add 'X' for each multiple of 10
+    num %= 500
+    roman_parts.extend(["C"] * (num // 100))  # Add 'X' for each multiple of 10
+    num %= 100
+    roman_parts.extend(["L"] * (num // 50))  # Add 'X' for each multiple of 10
+    num %= 50
+    roman_parts.extend(["X"] * (num // 10))  # Add 'X' for each multiple of 10
+    num %= 10
+    roman_parts.extend(["V"] * (num // 5))  # Add 'V' for each multiple of 5
+    num %= 5
+    roman_parts.extend([r"/"] * num)  # Add 'I' for the remainder
+
+    # Join with " \! " to form the arrow-like structure
+    res = "$" + r" \! ".join(roman_parts) + r" \! $-$\!\!\guilsinglright$"
+    print(n, res)
+    return res