fix XML tool call parser for malformed key-value pairs

app/main.py

@@ -21,13 +21,13 @@ def parse_xml_tool_calls(content: str) -> list[dict]:
         name = match.group(1)
         body = match.group(2).strip()
         args = {}
-        arg_keys = re.findall(r'<longcat_arg_key>(\w+)</longcat_arg_key>', body)
-        arg_values = re.findall(r'<longcat_arg_value>(.*?)</longcat_arg_value>', body, re.DOTALL)
-        for i, key in enumerate(arg_keys):
-            if i < len(arg_values):
-                args[key] = arg_values[i].strip()
-        if args or True:
-            calls.append({"name": name, **args})
+        pair_pattern = r'<longcat_arg_key>(\w+)</longcat_arg_key>\s*(?:<longcat_arg_value>(.*?)</longcat_arg_value>)?'
+        for pair_match in re.finditer(pair_pattern, body, re.DOTALL):
+            key = pair_match.group(1)
+            value = pair_match.group(2)
+            if value is not None:
+                args[key] = value.strip()
+        calls.append({"name": name, **args})
     return calls
 
 # Lazy imports to avoid blocking startup