bugfix

gateway/src/harness/agent-harness.ts

@@ -505,8 +505,6 @@ export class AgentHarness {
 
     const messagesCopy = [...messages];
     let iterations = 0;
-    // Track last char of last yielded text chunk to detect missing spaces between tokens
-    let lastChunkTail = '';
 
     while (iterations < maxIterations) {
       if (signal?.aborted) break;
@@ -525,24 +523,15 @@ export class AgentHarness {
       try {
         const stream = await model.stream(messagesCopy, { signal });
         for await (const chunk of stream) {
-          const contents: string[] = [];
           if (typeof chunk.content === 'string' && chunk.content.length > 0) {
-            contents.push(chunk.content);
+            yield { type: 'chunk', content: chunk.content };
           } else if (Array.isArray(chunk.content)) {
             for (const block of chunk.content) {
-              if (block.type === 'text' && block.text) contents.push(block.text);
+              if (block.type === 'text' && block.text) {
+                yield { type: 'chunk', content: block.text };
+              }
             }
           }
-          for (const content of contents) {
-            // DeepInfra/GLM streams tokens without leading spaces; inject one when
-            // both the tail of the previous chunk and the head of this chunk are
-            // word characters (\w), which would otherwise merge two words.
-            if (lastChunkTail && /\w/.test(lastChunkTail) && /\w/.test(content[0])) {
-              yield { type: 'chunk', content: ' ' };
-            }
-            lastChunkTail = content[content.length - 1];
-            yield { type: 'chunk', content };
-          }
           response = response ? response.concat(chunk) : chunk;
         }
       } catch (invokeError: any) {
@@ -700,7 +689,6 @@ export class AgentHarness {
 
       // After all tool calls complete, emit a space separator before the next LLM streaming pass
       yield { type: 'chunk', content: ' ' };
-      lastChunkTail = ' ';
     }
 
     // Max iterations reached - yield done with apology