服务端媒体源导入/保存/客户端输出链路修复：支持 snake/camel、subcategories/sources，默认客户端可见，保存后发布兼容 media-types.json。

新增数据库同步 Job API、持久化状态、实时输出、最新任务恢复，以及系统日志聚合接口。
管理端优化：日志中心、运维实时状态框、同步输出自动滚动、仪表盘“输出”列、真实延迟空态、本地 favicon/avatar。
新增 server/unified-management/assets/favicon.ico 和 developer-avatar.png，并接好 /favicon.ico、/admin/favicon.ico、/setup/favicon.ico、/assets/*。
WinUI 随机放映室卡片优先显示子接口原始 Description。
Inno 安装器输出框改为选区末尾 + SendMessage 滚动到底部。

server/unified-management/internal/db/store.go

@@ -69,6 +69,7 @@ func Open(cfg *config.Config) (*Store, error) {
 			SchemaVersion:   CurrentSchemaVersion,
 			SQLiteReady:     true,
 			LastRecoveredAt: Now(),
+			LastHealthStatus: "not_configured",
 		},
 	}
 	if err := store.migrate(local, localDialect); err != nil {
@@ -86,6 +87,7 @@ func Open(cfg *config.Config) (*Store, error) {
 			store.markFailover(err)
 		}
 	}
+	store.restoreDatabaseSyncStatus()
 	go store.maintain()
 	return store, nil
 }
@@ -171,14 +173,17 @@ func (s *Store) ReconfigureDatabase(cfg *config.Config) error {
 	s.status.RemoteReady = remote != nil
 	s.status.LastError = ""
 	s.status.FailoverActive = false
+	s.status.LastHealthCheckedAt = Now()
 	if remote != nil {
 		s.db = remote
 		s.dialect = remoteDialect
 		s.status.ActiveProvider = "mysql"
+		s.status.LastHealthStatus = "ok"
 	} else {
 		s.db = local
 		s.dialect = localDialect
 		s.status.ActiveProvider = "sqlite"
+		s.status.LastHealthStatus = "not_configured"
 	}
 	s.status.LastRecoveredAt = Now()
 	s.mu.Unlock()
@@ -188,6 +193,7 @@ func (s *Store) ReconfigureDatabase(cfg *config.Config) error {
 	if oldLocal != nil && oldLocal != local {
 		_ = oldLocal.Close()
 	}
+	s.restoreDatabaseSyncStatus()
 	return nil
 }
 
@@ -237,7 +243,11 @@ func (s *Store) insertID(query string, args ...any) (int64, error) {
 }
 
 func (s *Store) maintain() {
-	ticker := time.NewTicker(time.Duration(s.cfg.Database.HealthIntervalSec) * time.Second)
+	interval := s.cfg.Database.HealthIntervalSec
+	if interval <= 0 {
+		interval = 60
+	}
+	ticker := time.NewTicker(time.Duration(interval) * time.Second)
 	defer ticker.Stop()
 	for {
 		select {
@@ -276,12 +286,18 @@ func (s *Store) openRemote() error {
 	s.status.FailoverActive = false
 	s.status.LastError = ""
 	s.status.LastRecoveredAt = Now()
+	s.status.LastHealthCheckedAt = Now()
+	s.status.LastHealthStatus = "ok"
 	s.mu.Unlock()
 	return nil
 }
 
 func (s *Store) checkRemote() {
 	if !strings.EqualFold(s.cfg.Database.Provider, "mysql") {
+		s.mu.Lock()
+		s.status.LastHealthCheckedAt = Now()
+		s.status.LastHealthStatus = "not_configured"
+		s.mu.Unlock()
 		return
 	}
 	s.mu.RLock()
@@ -311,6 +327,8 @@ func (s *Store) checkRemote() {
 	s.status.FailoverActive = false
 	s.status.LastError = ""
 	s.status.LastRecoveredAt = Now()
+	s.status.LastHealthCheckedAt = Now()
+	s.status.LastHealthStatus = "ok"
 	s.mu.Unlock()
 }
 
@@ -329,4 +347,6 @@ func (s *Store) markFailover(err error) {
 	s.status.FailoverActive = !strings.EqualFold(s.cfg.Database.Provider, "sqlite")
 	s.status.LastError = err.Error()
 	s.status.LastFailoverAt = Now()
+	s.status.LastHealthCheckedAt = Now()
+	s.status.LastHealthStatus = "error"
 }