feat(MatchService): enhance match filtering for own teams and update mobile app settings

- Added logic in MatchService to filter matches based on the user's own teams, ensuring only relevant matches are displayed.
- Updated the mobile app's TODO list to reflect progress on ClubSettings and Predefined Activities features.
- Enhanced the AppRoot and ClubStammdatenScreens to support new settings and permissions for club management.
- Introduced new API methods for creating and updating training groups and times, improving the training management capabilities.
- Refactored MembersManager to include methods for managing training groups and times, streamlining the member management process.

backend/services/matchService.js

@@ -211,6 +211,28 @@ class MatchService {
                 throw new Error('Season not found');
             }
         }
+
+        // Nur Spiele mit eigener Mannschaft (gleiche Logik wie getMatchesForLeague mit scope "own"):
+        // Mannschaften, deren Name mit dem Vereinsnamen beginnt, in Ligen dieser Saison.
+        const club = await Club.findByPk(clubId, { attributes: ['name'] });
+        const leaguesInSeason = await League.findAll({
+            where: { clubId, seasonId: season.id },
+            attributes: ['id']
+        });
+        const leagueIdList = leaguesInSeason.map((l) => l.id);
+        let ownTeamIdSet = new Set();
+        if (club?.name && leagueIdList.length) {
+            const escaped = String(club.name).replace(/\\/g, '\\\\').replace(/%/g, '\\%').replace(/_/g, '\\_');
+            const ownTeams = await Team.findAll({
+                where: {
+                    leagueId: { [Op.in]: leagueIdList },
+                    name: { [Op.like]: `${escaped}%` }
+                },
+                attributes: ['id']
+            });
+            ownTeamIdSet = new Set(ownTeams.map((t) => t.id));
+        }
+
         const matches = await Match.findAll({
             where: {
                 clubId: clubId,
@@ -225,6 +247,13 @@ class MatchService {
             if (!league || league.seasonId !== season.id) {
                 continue; // Skip matches from other seasons
             }
+
+            // Kalender: nur Punktspiele, an denen der Verein beteiligt ist (eigene Mannschaft Heim oder Gast)
+            if (ownTeamIdSet.size > 0) {
+                if (!ownTeamIdSet.has(match.homeTeamId) && !ownTeamIdSet.has(match.guestTeamId)) {
+                    continue;
+                }
+            }
             
             const enrichedMatch = {
                 id: match.id,