feat(schedule): split team projects into groups when exceeding maxParticipants

- Added splitTeamIntoSubGroups method for team project grouping
- Team projects now split by maxParticipants (max teams per group)
- Display format: projectName + category + 第X组 (when split)
- Consistent with individual project grouping behavior

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

src/main/java/org/springblade/modules/martial/service/schedule/grouping/ParticipantGroupingService.java

@@ -124,38 +124,70 @@ public class ParticipantGroupingService {
                 continue;
             }
 
-            // For team projects, skip gender filter as validation is done at registration time
-            // Team athlete records do not have accurate gender info (they represent the team, not individual members)
-            // members = filterByCategory(members, project);
-
-            long teamCount = members.stream()
-                .map(MartialAthlete::getTeamName)
-                .filter(org -> org != null && !org.isEmpty())
-                .distinct()
-                .count();
-
             String projectName = project.getProjectName();
             String categoryName = getProjectCategoryName(project);
+            int maxTeamsPerGroup = (project.getMaxParticipants() != null && project.getMaxParticipants() > 0)
+                ? project.getMaxParticipants() : members.size();
+            int durationPerTeam = (project.getEstimatedDuration() != null && project.getEstimatedDuration() > 0)
+                ? project.getEstimatedDuration() : 5;
 
+            // Team projects: each record in members represents one team
+            int teamCount = members.size();
+
+            if (teamCount <= maxTeamsPerGroup) {
+                // No need to split, create single group
                 ScheduleGroupData group = ScheduleGroupData.builder()
                     .groupName(projectName + (categoryName.isEmpty() ? "" : " " + categoryName))
                     .projectId(first.getProjectId())
-                .projectType((project.getType() == 2 || project.getType() == 3) ? 2 : 1)
+                    .projectType(2)
-                .maxParticipants(project.getMaxParticipants())
+                    .maxParticipants(maxTeamsPerGroup)
                     .category(categoryName)
                     .displayOrder(displayOrder++)
                     .totalParticipants(members.size())
-                .totalTeams((int) teamCount)
+                    .totalTeams(teamCount)
                     .athletes(members)
+                    .estimatedDuration(teamCount * durationPerTeam)
                     .build();
-
+                groups.add(group);
-            int duration;
-            if (project.getEstimatedDuration() != null && project.getEstimatedDuration() > 0) {
-                duration = (int) teamCount * project.getEstimatedDuration();
             } else {
-                duration = (int) teamCount * 5 + Math.max(0, (int) teamCount - 1) * 2;
+                // Split into sub-groups like individual projects
+                displayOrder = splitTeamIntoSubGroups(members, project, projectName, categoryName,
+                    maxTeamsPerGroup, durationPerTeam, groups, displayOrder);
             }
-            group.setEstimatedDuration(duration);
+        }
+        return displayOrder;
+    }
+
+    /**
+     * Split team project into sub-groups when team count exceeds maxParticipants
+     */
+    private int splitTeamIntoSubGroups(List<MartialAthlete> members, MartialProject project,
+                                        String projectName, String categoryName, int maxTeamsPerGroup,
+                                        int durationPerTeam, List<ScheduleGroupData> groups, int displayOrder) {
+        int totalTeams = members.size();
+        int numSubGroups = (int) Math.ceil((double) totalTeams / maxTeamsPerGroup);
+
+        log.info("Team project '{}' has {} teams, splitting into {} groups (max {} per group)",
+            projectName + " " + categoryName, totalTeams, numSubGroups, maxTeamsPerGroup);
+
+        for (int i = 0; i < numSubGroups; i++) {
+            int startIdx = i * maxTeamsPerGroup;
+            int endIdx = Math.min(startIdx + maxTeamsPerGroup, totalTeams);
+            List<MartialAthlete> subGroupMembers = new ArrayList<>(members.subList(startIdx, endIdx));
+            int subGroupTeamCount = subGroupMembers.size();
+
+            ScheduleGroupData group = ScheduleGroupData.builder()
+                .groupName(projectName + " " + categoryName + " 第" + (i + 1) + "组")
+                .projectId(project.getId())
+                .projectType(2)
+                .maxParticipants(maxTeamsPerGroup)
+                .displayOrder(displayOrder++)
+                .category(categoryName)
+                .totalParticipants(subGroupMembers.size())
+                .totalTeams(subGroupTeamCount)
+                .athletes(subGroupMembers)
+                .estimatedDuration(subGroupTeamCount * durationPerTeam)
+                .build();
             groups.add(group);
         }
         return displayOrder;