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"
 )
@@ -48,6 +49,7 @@ func (c *Client) ToolSelect(ctx context.Context, messages []api.Message, tools [
 		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