new r + stee product expansion

utils.py

@@ -212,26 +212,34 @@ STEEL_PRODUCT_EXPANSIONS = {
 def enhance_query_for_steel_grades(query):
     """Expand query with steel grade specific context"""
     import re    
-    # Detect steel grades in query
-    steel_pattern = r'\b[СC][ВB]-\d{1,3}(?:[A-ZА-ЯЁ]\d*)+\b'
+    
+    # FIX: Use the same pattern as normalize_steel_designations
+    # Pattern for regular steel grades: 08X18H10T, 12X18H10T, etc.
+    steel_pattern = r'\b\d{1,3}(?:[A-ZА-ЯЁ]\d*)+\b'
+    # Pattern for welding wires: СВ-08X19H10, CB-08X19H10
+    wire_pattern = r'\b[СC][ВB]-\d{1,3}(?:[A-ZА-ЯЁ]\d*)+\b'
+    
     matches = re.findall(steel_pattern, query, re.IGNORECASE)
+    wire_matches = re.findall(wire_pattern, query, re.IGNORECASE)
+    
+    all_matches = matches + wire_matches
 
-    if not matches:
+    if not all_matches:
         return query
     
     # Collect context expansions
     added_context = []
     grades_found = []
     
-    for match in matches:
+    for match in all_matches:
         match_upper = match.upper()
         grades_found.append(match_upper)
         
         # Check if we have specific context for this grade
         if match_upper in STEEL_PRODUCT_EXPANSIONS:
-            context = STEEL_PRODUCT_EXPANSIONS[match_upper]
+            context = ' '.join(STEEL_PRODUCT_EXPANSIONS[match_upper])
             added_context.append(context)
-            log_message(f"  Found specific context for {match_upper}")
+            log_message(f"  Found specific context for {match_upper}: {context}")
         else:
             # Use generic context for unknown grades
             added_context.append(GENERIC_STEEL_CONTEXT)