feat(audit): F1+F2 告警静默规则标记完成 + 审计日志CSV导出实现

F1 告警静默规则 [done]:
- 后端 alert_silence.go: CRUD + Toggle (onetime/daily/weekly 三模式)
- 告警引擎 isSilenced 集成 (alert_engine.go)
- 前端 SilenceRuleTab + SilenceDialog
- 路由 /alerts/silences 已注册

F2 审计日志导出 [done]:
- 重写 ExportAuditLogs: 真正的 CSV 导出 (encoding/csv + UTF-8 BOM)
- 支持 module/action/username/startTime/endTime 筛选
- 导出限制 10000 条防溢出，自动记录审计日志
- JSON 格式向后兼容 (format=json)
- 前端 exportLogs 传递查询参数

同时包含累积的前期工作:
- 目录重构 internal/ -> controller/model/router (v0.55-v0.57)
- 后端分层架构 dto/repository/service/utils
- 审计模块全功能 (终端审计/操作审计/登录日志)
- asciicast v2 录制格式
- SFTP 文件浏览器
- StatStrip 紧凑统计条
- 在线会话自动刷新
- LiveMonitor WebSocket 诊断修复

验证: go build ✅ | npm run build ✅ | Docker 部署 ✅ | 10 回归端点 ✅ | CSV 导出 ✅ | 静默 CRUD ✅

backend/controller/resource_model.go

@@ -0,0 +1,134 @@
+package controller
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"ezops/model"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// ResourceModelHandler 资源模型处理器
+type ResourceModelHandler struct {
+	db *gorm.DB
+}
+
+func NewResourceModelHandler(db *gorm.DB) *ResourceModelHandler {
+	return &ResourceModelHandler{db: db}
+}
+
+// resourceModelRequest 资源模型创建/更新请求
+type resourceModelRequest struct {
+	Name        string                   `json:"name"`
+	Code        string                   `json:"code"`
+	Description string                   `json:"description"`
+	Type        string                   `json:"type"`
+	Icon        string                   `json:"icon"`
+	Attributes  []map[string]interface{} `json:"attributes"`
+}
+
+// ListResourceModels 获取资源模型列表
+func (h *ResourceModelHandler) ListResourceModels(c *gin.Context) {
+	var models_ []model.ResourceModel
+	h.db.Order("id ASC").Find(&models_)
+
+	c.JSON(http.StatusOK, model.Response{
+		Code:    200,
+		Message: "success",
+		Data: model.ListResponse{
+			List:  models_,
+			Total: int64(len(models_)),
+		},
+	})
+}
+
+// CreateResourceModel 创建资源模型
+func (h *ResourceModelHandler) CreateResourceModel(c *gin.Context) {
+	var req resourceModelRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, model.Response{Code: 400, Message: "请求参数错误: " + err.Error()})
+		return
+	}
+	if strings.TrimSpace(req.Name) == "" || strings.TrimSpace(req.Code) == "" {
+		c.JSON(http.StatusBadRequest, model.Response{Code: 400, Message: "模型名称和编码不能为空"})
+		return
+	}
+
+	modelType := strings.TrimSpace(req.Type)
+	if modelType == "" {
+		modelType = "normal"
+	}
+
+	var attrsJSON string
+	if len(req.Attributes) > 0 {
+		b, _ := json.Marshal(req.Attributes)
+		attrsJSON = string(b)
+	}
+
+	rm := model.ResourceModel{
+		Name:        strings.TrimSpace(req.Name),
+		Code:        strings.TrimSpace(req.Code),
+		Description: req.Description,
+		Type:        modelType,
+		Attributes:  attrsJSON,
+		Icon:        req.Icon,
+	}
+	if err := h.db.Create(&rm).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: "创建失败，编码可能已存在"})
+		return
+	}
+	c.JSON(http.StatusOK, model.Response{Code: 200, Message: "创建成功", Data: rm})
+}
+
+// UpdateResourceModel 更新资源模型
+func (h *ResourceModelHandler) UpdateResourceModel(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+	var req resourceModelRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, model.Response{Code: 400, Message: "请求参数错误: " + err.Error()})
+		return
+	}
+
+	var rm model.ResourceModel
+	if err := h.db.First(&rm, id).Error; err != nil {
+		c.JSON(http.StatusNotFound, model.Response{Code: 404, Message: "资源模型不存在"})
+		return
+	}
+
+	if strings.TrimSpace(req.Name) != "" {
+		rm.Name = strings.TrimSpace(req.Name)
+	}
+	if strings.TrimSpace(req.Code) != "" {
+		rm.Code = strings.TrimSpace(req.Code)
+	}
+	if strings.TrimSpace(req.Type) != "" {
+		rm.Type = strings.TrimSpace(req.Type)
+	}
+	rm.Description = req.Description
+	rm.Icon = req.Icon
+
+	if len(req.Attributes) > 0 {
+		b, _ := json.Marshal(req.Attributes)
+		rm.Attributes = string(b)
+	}
+
+	if err := h.db.Save(&rm).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: "更新失败"})
+		return
+	}
+	c.JSON(http.StatusOK, model.Response{Code: 200, Message: "更新成功", Data: rm})
+}
+
+// DeleteResourceModel 删除资源模型
+func (h *ResourceModelHandler) DeleteResourceModel(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+	if err := h.db.Delete(&model.ResourceModel{}, id).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: "删除失败"})
+		return
+	}
+	c.JSON(http.StatusOK, model.Response{Code: 200, Message: "删除成功"})
+}