fix(team_process): Clean up stuck processing owners on startup and batch completion

- Add CleanupStuckProcessingOwners database method to reset owners stuck in processing status back to valid state
- Call cleanup routine on application startup to recover from previous abnormal exits
- Call cleanup routine after batch processing completes to ensure no orphaned processing states remain
- Add markOwnerResult calls in processSingleTeam when team invitations are full to properly track owner status
- Prevents owners from being permanently stuck in processing state due to unexpected shutdowns or errors

backend/internal/api/team_process.go

@@ -367,6 +367,13 @@ func runTeamProcess(req TeamProcessRequest) {
 	defer func() {
 		teamProcessState.Running = false
 
+		// 清理残留的 processing 状态母号，重置为 valid
+		if database.Instance != nil {
+			if affected, err := database.Instance.CleanupStuckProcessingOwners(); err == nil && affected > 0 {
+				logger.Warning(fmt.Sprintf("批次结束，重置了 %d 个残留的处理中母号为有效状态", affected), "", "team")
+			}
+		}
+
 		// 无论任务是正常完成还是异常中断，都更新批次记录状态
 		if database.Instance != nil && batchID > 0 {
 			errorsStr := ""
@@ -993,6 +1000,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		result.AddedToS2A = int(atomic.LoadInt32(&s2aSuccessCount))
 		result.Errors = append(result.Errors, "Team 邀请已满")
 		result.DurationMs = time.Since(startTime).Milliseconds()
+		markOwnerResult(result.AddedToS2A > 0)
 		return result
 	}
 
@@ -1027,6 +1035,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		result.AddedToS2A = int(atomic.LoadInt32(&s2aSuccessCount))
 		result.Errors = append(result.Errors, "Team 邀请已满")
 		result.DurationMs = time.Since(startTime).Milliseconds()
+		markOwnerResult(result.AddedToS2A > 0)
 		return result
 	}