Update main.py

main.py

@@ -105,16 +105,19 @@ def _normalize_lines(text: str) -> List[str]:
 def _ensure_numbering(text: str) -> str:
     text = re.sub(r"[\u2060\u200B]", "", text or "")
     def strip_prefix_any(s: str) -> str:
-        return re.sub(
-            r"^\s*(?:[\u2060\u200B]*"
-            r"(?:\d+\s*[.)]"
-            r"|(?i:step\s*\d+:?)"
-            r"|[\-\*\u2022]"
-            r"|[\u2460-\u2473])\s*",
-            "",
-            (s or "").strip(),
-            flags=re.IGNORECASE,
+    
+#Matches any leading list marker: numbers (1) or 1., 'Step N:', bullets -, *, •, circled numerals
+        pattern = (
+            r"^\s*(?:"          # start, optional spaces, non-capturing group
+            r"[\u2060\u200B]*"  # optional zero-width characters
+            r"(?:\d+\s*[.)]"    # classic numbers like '1)' or '2.'
+            r"|step\s*\d+:?"    # 'Step 3:' (case-insensitive via IGNORECASE)
+            r"|[\-\*\u2022]"    # bullets '-', '*', '•'
+            r"|[\u2460-\u2473])"  # circled numerals
+            r"\s*)"             # trailing spaces, close outer group  ← THIS ) WAS MISSING
         )
+        return re.sub(pattern, "", (s or "").strip(), flags=re.IGNORECASE)
+
     lines = [ln.strip() for ln in (text or "").splitlines() if ln and ln.strip()]
     if not lines:
         return text or ""