init: EZOps AIOps 智能运维平台

- 前端: React 18 + TypeScript + Vite + Tailwind CSS + shadcn/ui
- 后端: Go + Gin + GORM + JWT (golang-jwt/jwt/v5)
- 功能: 服务器管理、K8s集群、监控告警、CI/CD、自动化运维、审批流程、审计日志
- 文档: 设计文档(ROADMAP/PDD/架构/模块)

backend/internal/config/config.go

@@ -0,0 +1,96 @@
+package config
+
+import (
+	"github.com/spf13/viper"
+	"go.uber.org/zap"
+)
+
+// Config 应用配置
+type Config struct {
+	Mode      string         `mapstructure:"mode"`
+	Port      string         `mapstructure:"port"`
+	LogLevel  string         `mapstructure:"log_level"`
+	Database  DatabaseConfig `mapstructure:"database"`
+	JWT       JWTConfig      `mapstructure:"jwt"`
+	Redis     RedisConfig    `mapstructure:"redis"`
+	Websocket WebsocketConfig `mapstructure:"websocket"`
+}
+
+// DatabaseConfig 数据库配置
+type DatabaseConfig struct {
+	Driver   string `mapstructure:"driver"`
+	Host     string `mapstructure:"host"`
+	Port     int    `mapstructure:"port"`
+	User     string `mapstructure:"user"`
+	Password string `mapstructure:"password"`
+	DBName   string `mapstructure:"dbname"`
+	Charset  string `mapstructure:"charset"`
+	MaxConn  int    `mapstructure:"max_conn"`
+	MaxIdle  int    `mapstructure:"max_idle"`
+}
+
+// JWTConfig JWT配置
+type JWTConfig struct {
+	Secret     string `mapstructure:"secret"`
+	ExpireHour int    `mapstructure:"expire_hour"`
+}
+
+// RedisConfig Redis配置
+type RedisConfig struct {
+	Host     string `mapstructure:"host"`
+	Port     int    `mapstructure:"port"`
+	Password string `mapstructure:"password"`
+	DB       int    `mapstructure:"db"`
+}
+
+// WebsocketConfig WebSocket配置
+type WebsocketConfig struct {
+	ReadBufferSize  int `mapstructure:"read_buffer_size"`
+	WriteBufferSize int `mapstructure:"write_buffer_size"`
+}
+
+// Load 加载配置
+func Load() *Config {
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath("./configs")
+	viper.AddConfigPath(".")
+
+	// 设置默认值
+	viper.SetDefault("mode", "development")
+	viper.SetDefault("port", "8080")
+	viper.SetDefault("log_level", "info")
+	viper.SetDefault("database.driver", "mysql")
+	viper.SetDefault("database.host", "localhost")
+	viper.SetDefault("database.port", 3306)
+	viper.SetDefault("database.charset", "utf8mb4")
+	viper.SetDefault("database.max_conn", 100)
+	viper.SetDefault("database.max_idle", 10)
+	viper.SetDefault("jwt.expire_hour", 24)
+	viper.SetDefault("redis.host", "localhost")
+	viper.SetDefault("redis.port", 6379)
+	viper.SetDefault("websocket.read_buffer_size", 1024)
+	viper.SetDefault("websocket.write_buffer_size", 1024)
+
+	// 读取环境变量
+	viper.AutomaticEnv()
+
+	var cfg Config
+	if err := viper.ReadInConfig(); err != nil {
+		zap.L().Warn("config file not found, using defaults", zap.Error(err))
+	}
+
+	if err := viper.Unmarshal(&cfg); err != nil {
+		zap.L().Fatal("failed to unmarshal config", zap.Error(err))
+	}
+
+	return &cfg
+}
+
+// DSN 返回数据库连接字符串
+func (d *DatabaseConfig) DSN() string {
+	if d.Driver == "mysql" {
+		return d.User + ":" + d.Password + "@tcp(" + d.Host + ":" + string(rune(d.Port)) + ")/" + d.DBName + "?charset=" + d.Charset + "&parseTime=True&loc=Local"
+	}
+	return ""
+}