feat: 添加微服务模板基础架构

- 创建基于 CloudWego Hertz 的 Go 微服务脚手架
- 集成 Nacos 服务注册/发现功能
- 添加 gRPC 客户端支持
- 实现环境变量配置管理 (.env.example)
- 添加 HTTP 中间件 (Recovery, AccessLog, CORS)
- 配置 Gitea CI/CD 构建部署流程

BREAKING CHANGE: 项目结构调整，从简单的 API 服务升级为完整的微服务架构

utils/logger/log.go

@@ -0,0 +1,171 @@
+package logger
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	reset  = "\033[0m"
+	red    = "\033[31m"
+	green  = "\033[32m"
+	yellow = "\033[33m"
+	blue   = "\033[34m"
+	cyan   = "\033[36m"
+	white  = "\033[97m"
+)
+
+type colorFormatter struct{}
+
+func (f *colorFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	var levelColor string
+	switch entry.Level {
+	case logrus.DebugLevel:
+		levelColor = cyan
+	case logrus.InfoLevel:
+		levelColor = green
+	case logrus.WarnLevel:
+		levelColor = yellow
+	case logrus.ErrorLevel:
+		levelColor = red
+	case logrus.FatalLevel, logrus.PanicLevel:
+		levelColor = red
+	default:
+		levelColor = white
+	}
+
+	timestamp := fmt.Sprintf("%s%s%s", levelColor, entry.Time.Format("01-02 15:04:05"), reset)
+
+	file := "unknown"
+	line := 0
+	if entry.Caller != nil {
+		file = entry.Caller.File
+		if idx := strings.LastIndex(file, "/"); idx >= 0 {
+			file = file[idx+1:]
+		}
+		line = entry.Caller.Line
+	}
+
+	title, _ := entry.Data["title"].(string)
+	if title == "" {
+		title = "-"
+	}
+
+	level := fmt.Sprintf("%s[%s]%s", levelColor, strings.ToUpper(entry.Level.String()), reset)
+	titleStr := fmt.Sprintf("%s「%s」%s", levelColor, title, reset)
+
+	msg := fmt.Sprintf("%s %s:%d: %s >> %s %s\n",
+		timestamp, file, line, level, titleStr, entry.Message,
+	)
+	return []byte(msg), nil
+}
+
+var (
+	instance *logrus.Logger
+	once     sync.Once
+)
+
+func GetLogger() *logrus.Logger {
+	once.Do(func() {
+		instance = logrus.New()
+
+		switch strings.ToLower(os.Getenv("LOG_LEVEL")) {
+		case "debug":
+			instance.SetLevel(logrus.DebugLevel)
+		case "info":
+			instance.SetLevel(logrus.InfoLevel)
+		case "warn":
+			instance.SetLevel(logrus.WarnLevel)
+		case "error":
+			instance.SetLevel(logrus.ErrorLevel)
+		case "fatal":
+			instance.SetLevel(logrus.FatalLevel)
+		default:
+			instance.SetLevel(logrus.InfoLevel)
+		}
+
+		instance.SetFormatter(&colorFormatter{})
+		instance.SetReportCaller(true)
+
+		if os.Getenv("LOG_SAVE") == "true" {
+			logDir := os.Getenv("LOG_SAVE_PATH")
+			if logDir != "" {
+				if err := os.MkdirAll(logDir, 0755); err != nil {
+					instance.Errorf("创建日志目录失败: %v", err)
+				} else {
+					logFile := logDir + "/" + time.Now().Format("20060102") + ".log"
+					f, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+					if err == nil {
+						instance.SetOutput(io.MultiWriter(os.Stdout, f))
+					}
+				}
+			}
+		}
+	})
+	return instance
+}
+
+func callerSkip() *runtime.Frame {
+	pcs := make([]uintptr, 10)
+	n := runtime.Callers(3, pcs)
+	frames := runtime.CallersFrames(pcs[:n])
+	for {
+		frame, more := frames.Next()
+		if !strings.Contains(frame.File, "utils/logger/") {
+			return &frame
+		}
+		if !more {
+			break
+		}
+	}
+	return nil
+}
+
+func toString(v interface{}) string {
+	rv := reflect.ValueOf(v)
+	if rv.Kind() == reflect.Struct || (rv.Kind() == reflect.Ptr && rv.Elem().Kind() == reflect.Struct) {
+		data, err := json.Marshal(v)
+		if err != nil {
+			return fmt.Sprintf("%v", v)
+		}
+		return string(data)
+	}
+	return fmt.Sprintf("%v", v)
+}
+
+func joinToString(parts ...interface{}) string {
+	strs := make([]string, 0, len(parts))
+	for _, p := range parts {
+		strs = append(strs, toString(p))
+	}
+	return strings.Join(strs, " ")
+}
+
+func Debug(title string, content ...interface{}) {
+	GetLogger().WithField("title", title).Debug(joinToString(content...))
+}
+
+func Info(title string, content ...interface{}) {
+	GetLogger().WithField("title", title).Info(joinToString(content...))
+}
+
+func Warn(title string, content ...interface{}) {
+	GetLogger().WithField("title", title).Warn(joinToString(content...))
+}
+
+func Error(title string, content ...interface{}) {
+	GetLogger().WithField("title", title).Error(joinToString(content...))
+}
+
+func Fatal(title string, content ...interface{}) {
+	GetLogger().WithField("title", title).Fatal(joinToString(content...))
+}