fix: correct typo in warning message and refine whitespace handling logic

Author: caozhiyuan

src/routes/messages/handler.ts

@@ -181,7 +181,7 @@ const handleWithResponsesApi = async (
 
       if (!streamState.messageCompleted) {
         logger.warn(
-          "Responses stream ended without completion; sending erorr event",
+          "Responses stream ended without completion; sending error event",
         )
         const errorEvent = buildErrorEvent(
           "Responses stream ended without completion",

src/routes/messages/responses-stream-translation.ts

@@ -38,15 +38,17 @@ const updateWhitespaceRunState = (
   let count = previousCount
 
   for (const char of chunk) {
-    if (char === " " || char === "\r" || char === "\n") {
+    if (char === "\r" || char === "\n") {
       count += 1
       if (count > MAX_CONSECUTIVE_FUNCTION_CALL_WHITESPACE) {
         return { nextCount: count, exceeded: true }
       }
       continue
     }
 
-    count = 0
+    if (char !== " ") {
+      count = 0
+    }
   }
 
   return { nextCount: count, exceeded: false }