Enha: get func name from oai tool call

bot.go

@@ -442,7 +442,7 @@ func findCall(msg, toolCall string, tv *tview.TextView) {
 	// call a func
 	f, ok := fnMap[fc.Name]
 	if !ok {
-		m := fc.Name + "%s is not implemented"
+		m := fc.Name + " is not implemented"
 		chatRound(m, cfg.ToolRole, tv, false, false)
 		return
 	}

llm.go

@@ -146,6 +146,10 @@ func (op OpenAIer) ParseChunk(data []byte) (*models.TextChunk, error) {
 	}
 	if len(llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls) > 0 {
 		resp.ToolChunk = llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls[0].Function.Arguments
+		fname := llmchunk.Choices[len(llmchunk.Choices)-1].Delta.ToolCalls[0].Function.Name
+		if fname != "" {
+			resp.FuncName = fname
+		}
 	}
 	if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason == "stop" {
 		if resp.Chunk != "" {