fix: agent finance page styling and cloud data API implementation

- Fix agent finance page: confirmed backend integration is working
- Add agent cloud-variables and cloud-constants API endpoints
- Rewrite agent cloud-data page to use real API calls instead of mock data
- Fix API path: /agent/applications -> /agent/apps
- Remove 'all' value from app filter SelectItem (empty string issue)
- Add cloudData i18n keys for zh and en
- Cloud data is read-only for agents, with CanViewCloudData permission check

backend/internal/router/agent/agent.go

@@ -25,6 +25,8 @@ func SetupAgentRoutes(r *gin.RouterGroup) {
 	r.GET("/profile", handleGetProfile)
 	r.PUT("/profile", handleUpdateProfile)
 	r.GET("/cards/export", handleExportCards)
+	r.GET("/cloud-variables", handleGetCloudVariables)
+	r.GET("/cloud-constants", handleGetCloudConstants)
 }
 
 func handleGetStats(c *gin.Context) {
@@ -764,3 +766,143 @@ func splitIDs(ids string) []string {
 	}
 	return result
 }
+
+func handleGetCloudVariables(c *gin.Context) {
+	userID := c.GetUint("user_id")
+
+	var agent model.User
+	if err := database.DB.First(&agent, userID).Error; err != nil {
+		response.Error(c, 404, "代理不存在")
+		return
+	}
+
+	if !agent.CanViewCloudData {
+		response.Error(c, 403, "无权查看云端数据")
+		return
+	}
+
+	var agentApps []model.AgentApplication
+	database.DB.Where("agent_id = ?", userID).Find(&agentApps)
+	appIDs := make([]uint, 0)
+	for _, app := range agentApps {
+		appIDs = append(appIDs, app.ApplicationID)
+	}
+
+	if len(appIDs) == 0 {
+		response.Success(c, gin.H{
+			"variables": []interface{}{},
+			"total":     0,
+		})
+		return
+	}
+
+	appIDFilter := c.Query("app_id")
+	var variables []model.CloudVariable
+	query := database.DB.Where("app_id IN ?", appIDs)
+	if appIDFilter != "" {
+		if aid, err := strconv.ParseUint(appIDFilter, 10, 32); err == nil {
+			query = database.DB.Where("app_id = ?", uint(aid))
+		}
+	}
+	query.Find(&variables)
+
+	appMap := make(map[uint]string)
+	var apps []model.Application
+	database.DB.Where("id IN ?", appIDs).Find(&apps)
+	for _, app := range apps {
+		appMap[app.ID] = app.Name
+	}
+
+	result := make([]gin.H, 0)
+	for _, v := range variables {
+		appName := ""
+		if v.AppID != nil {
+			appName = appMap[*v.AppID]
+		}
+		result = append(result, gin.H{
+			"id":          v.ID,
+			"name":        v.Key,
+			"app_id":      v.AppID,
+			"app_name":    appName,
+			"scope":       v.Scope,
+			"status":      v.Status,
+			"description": v.Description,
+			"created_at":  v.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		})
+	}
+
+	response.Success(c, gin.H{
+		"variables": result,
+		"total":     len(result),
+	})
+}
+
+func handleGetCloudConstants(c *gin.Context) {
+	userID := c.GetUint("user_id")
+
+	var agent model.User
+	if err := database.DB.First(&agent, userID).Error; err != nil {
+		response.Error(c, 404, "代理不存在")
+		return
+	}
+
+	if !agent.CanViewCloudData {
+		response.Error(c, 403, "无权查看云端数据")
+		return
+	}
+
+	var agentApps []model.AgentApplication
+	database.DB.Where("agent_id = ?", userID).Find(&agentApps)
+	appIDs := make([]uint, 0)
+	for _, app := range agentApps {
+		appIDs = append(appIDs, app.ApplicationID)
+	}
+
+	if len(appIDs) == 0 {
+		response.Success(c, gin.H{
+			"constants": []interface{}{},
+			"total":     0,
+		})
+		return
+	}
+
+	appIDFilter := c.Query("app_id")
+	var constants []model.CloudConstant
+	query := database.DB.Where("app_id IN ?", appIDs)
+	if appIDFilter != "" {
+		if aid, err := strconv.ParseUint(appIDFilter, 10, 32); err == nil {
+			query = database.DB.Where("app_id = ?", uint(aid))
+		}
+	}
+	query.Find(&constants)
+
+	appMap := make(map[uint]string)
+	var apps []model.Application
+	database.DB.Where("id IN ?", appIDs).Find(&apps)
+	for _, app := range apps {
+		appMap[app.ID] = app.Name
+	}
+
+	result := make([]gin.H, 0)
+	for _, c := range constants {
+		appName := ""
+		if c.AppID != nil {
+			appName = appMap[*c.AppID]
+		}
+		result = append(result, gin.H{
+			"id":          c.ID,
+			"name":        c.Key,
+			"app_id":      c.AppID,
+			"app_name":    appName,
+			"value":       c.Value,
+			"status":      c.Status,
+			"description": c.Description,
+			"created_at":  c.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		})
+	}
+
+	response.Success(c, gin.H{
+		"constants": result,
+		"total":     len(result),
+	})
+}