重构版本状态为动态计算

- 状态不再写入数据库，改为查询时动态计算
- 每个应用的最新版 = 有效, 旧版 = 已失效
- 移除后端 status 筛选参数
- 移除前端 status 筛选器
- 移除编辑页的状态手动编辑
- 移除创建版本时自动更新旧版本状态的逻辑

backend/internal/router/admin/versions.go

@@ -43,7 +43,6 @@ func handleGetAllVersions(c *gin.Context) {
 	applicationIDFilter := c.Query("application_id")
 	updateStrategyFilter := c.Query("update_strategy")
 	updateMethodFilter := c.Query("update_method")
-	statusFilter := c.Query("status")
 	searchFilter := c.Query("search")
 
 	var total int64
@@ -86,9 +85,6 @@ func handleGetAllVersions(c *gin.Context) {
 	if updateMethodFilter != "" {
 		countQuery = countQuery.Where("update_method = ?", updateMethodFilter)
 	}
-	if statusFilter != "" {
-		countQuery = countQuery.Where("status = ?", statusFilter)
-	}
 	if searchFilter != "" {
 		searchLower := strings.ToLower(searchFilter)
 		countQuery = countQuery.Where("LOWER(version) LIKE ? OR LOWER(description) LIKE ?", "%"+searchLower+"%", "%"+searchLower+"%")
@@ -105,9 +101,6 @@ func handleGetAllVersions(c *gin.Context) {
 	if updateMethodFilter != "" {
 		query = query.Where("update_method = ?", updateMethodFilter)
 	}
-	if statusFilter != "" {
-		query = query.Where("status = ?", statusFilter)
-	}
 	if searchFilter != "" {
 		searchLower := strings.ToLower(searchFilter)
 		query = query.Where("LOWER(version) LIKE ? OR LOWER(description) LIKE ?", "%"+searchLower+"%", "%"+searchLower+"%")
@@ -134,6 +127,17 @@ func handleGetAllVersions(c *gin.Context) {
 		log.Printf("[DEBUG] Version %d: ID=%d, ApplicationID=%d, Version=%s\n", i, v.ID, v.ApplicationID, v.Version)
 	}
 
+	latestVersionIDs := make(map[uint]uint)
+	var latestIDs []uint
+	database.DB.Model(&model.Version{}).
+		Where("application_id IN ?", appIDs).
+		Select("MAX(id)").
+		Group("application_id").
+		Pluck("MAX(id)", &latestIDs)
+	for _, id := range latestIDs {
+		latestVersionIDs[id] = id
+	}
+
 	type VersionWithAppName struct {
 		model.Version
 		ApplicationName string `json:"application_name"`
@@ -143,6 +147,11 @@ func handleGetAllVersions(c *gin.Context) {
 	for i, v := range versions {
 		appName := appNameMap[v.ApplicationID]
 		log.Printf("[DEBUG] Mapping version %d: ApplicationID=%d -> AppName=%s\n", i, v.ApplicationID, appName)
+		if _, isLatest := latestVersionIDs[v.ID]; isLatest {
+			v.Status = "active"
+		} else {
+			v.Status = "superseded"
+		}
 		result[i] = VersionWithAppName{
 			Version:         v,
 			ApplicationName: appName,
@@ -178,6 +187,16 @@ func handleGetVersionByID(c *gin.Context) {
 		return
 	}
 
+	var latestID uint
+	database.DB.Model(&model.Version{}).
+		Where("application_id = ?", version.ApplicationID).
+		Select("MAX(id)").
+		Scan(&latestID)
+	computedStatus := "superseded"
+	if version.ID == latestID {
+		computedStatus = "active"
+	}
+
 	response.Success(c, gin.H{
 		"id":               version.ID,
 		"application_id":   version.ApplicationID,
@@ -192,7 +211,7 @@ func handleGetVersionByID(c *gin.Context) {
 		"update_method":    version.UpdateMethod,
 		"min_version":      version.MinVersion,
 		"changelog":        version.Changelog,
-		"status":           version.Status,
+		"status":           computedStatus,
 		"base_version_id":  version.BaseVersionID,
 		"files":            version.Files,
 		"created_at":       version.CreatedAt,
@@ -271,10 +290,6 @@ func handleCreateVersionGlobal(c *gin.Context) {
 		return
 	}
 
-	database.DB.Model(&model.Version{}).
-		Where("application_id = ? AND id != ? AND status = ?", req.ApplicationID, version.ID, "active").
-		Update("status", "superseded")
-
 	userIDPtr := &userID
 	versionIDPtr := &version.ID
 	service.CreateLog(service.LogParams{