fix: 优化负利润分析和缓存处理逻辑

internal/pkg/utils_ollama/client.go

@@ -8,6 +8,7 @@ import (
 	"net/url"
 	"os"
 	"sync"
+	"time"
 
 	"github.com/ollama/ollama/api"
 )
@@ -43,11 +44,12 @@ func (c *Client) ToolSelect(ctx context.Context, messages []api.Message, tools [
 
 	// 构建聊天请求
 	req := &api.ChatRequest{
-		Model:    c.config.Model,
-		Messages: messages,
-		Stream:   new(bool), // 设置为false，不使用流式响应
-		Think:    &api.ThinkValue{Value: false},
-		Tools:    tools,
+		Model:     c.config.Model,
+		Messages:  messages,
+		Stream:    new(bool), // 设置为false，不使用流式响应
+		Think:     &api.ThinkValue{Value: false},
+		Tools:     tools,
+		KeepAlive: &api.Duration{Duration: 24 * time.Hour},
 	}
 	err = c.client.Chat(ctx, req, func(resp api.ChatResponse) error {
 		res = resp