refactor(clubSettings): remove myTischtennis club ID and update related logic

- Removed the myTischtennis club ID field from club settings and related backend logic.
- Updated the database migration to eliminate the my_tischtennis_club_id column.
- Adjusted frontend components and services to reflect the removal of the club ID, ensuring the use of association member number instead.
- Enhanced user interface hints to clarify the use of association member number for rankings.

backend/controllers/clubsController.js

@@ -60,11 +60,10 @@ export const updateClubSettings = async (req, res) => {
   try {
     const { authcode: token } = req.headers;
     const { clubid } = req.params;
-    const { greetingText, associationMemberNumber, myTischtennisClubId, myTischtennisFedNickname, autoFetchRankings } = req.body;
+    const { greetingText, associationMemberNumber, myTischtennisFedNickname, autoFetchRankings } = req.body;
     const updated = await ClubService.updateClubSettings(token, clubid, {
       greetingText,
       associationMemberNumber,
-      myTischtennisClubId,
       myTischtennisFedNickname,
       autoFetchRankings
     });

backend/migrations/20260315_add_club_rankings_settings.sql

@@ -1,9 +1,8 @@
 -- Migration: Add myTischtennis rankings settings to clubs table
--- Enables per-club configuration of TTR/QTTR rankings fetch (club ID, federation, enable flag)
+-- Enables per-club configuration of TTR/QTTR rankings fetch.
+-- Club number comes from association_member_number (Verbands-Mitgliedsnummer).
 
 ALTER TABLE clubs
-  ADD COLUMN IF NOT EXISTS my_tischtennis_club_id VARCHAR(50) NULL
-    COMMENT 'myTischtennis club number for rankings (e.g. 43030)',
   ADD COLUMN IF NOT EXISTS my_tischtennis_fed_nickname VARCHAR(50) NULL
     COMMENT 'Federation short name for rankings (e.g. HeTTV)',
   ADD COLUMN IF NOT EXISTS auto_fetch_rankings BOOLEAN NOT NULL DEFAULT FALSE

backend/models/Club.js

@@ -17,12 +17,6 @@ const Club = sequelize.define('Club', {
     allowNull: true,
     field: 'association_member_number'
   },
-  myTischtennisClubId: {
-    type: DataTypes.STRING,
-    allowNull: true,
-    field: 'my_tischtennis_club_id',
-    comment: 'myTischtennis club number for rankings (e.g. 43030)'
-  },
   myTischtennisFedNickname: {
     type: DataTypes.STRING,
     allowNull: true,

backend/services/clubService.js

@@ -70,7 +70,6 @@ class ClubService {
     async updateClubSettings(userToken, clubId, {
         greetingText,
         associationMemberNumber,
-        myTischtennisClubId,
         myTischtennisFedNickname,
         autoFetchRankings
     }) {
@@ -80,7 +79,6 @@ class ClubService {
             throw new Error('clubnotfound');
         }
         const updates = { greetingText, associationMemberNumber };
-        if (myTischtennisClubId !== undefined) updates.myTischtennisClubId = myTischtennisClubId || null;
         if (myTischtennisFedNickname !== undefined) updates.myTischtennisFedNickname = myTischtennisFedNickname || null;
         if (autoFetchRankings !== undefined) updates.autoFetchRankings = !!autoFetchRankings;
         return await club.update(updates);

backend/services/memberService.js

@@ -396,14 +396,14 @@ class MemberService {
                 };
             }
 
-            const effectiveClubId = (club.myTischtennisClubId || '').trim() || account.clubId;
+            const effectiveClubId = (club.associationMemberNumber || '').trim() || account.clubId;
             const effectiveFedNickname = (club.myTischtennisFedNickname || '').trim() || account.fedNickname;
 
             if (!effectiveClubId || !effectiveFedNickname) {
                 console.error('[updateRatingsFromMyTischtennis] - Missing clubId or fedNickname:', {
                     clubId: effectiveClubId,
                     fedNickname: effectiveFedNickname,
-                    fromClub: !!(club.myTischtennisClubId && club.myTischtennisFedNickname)
+                    fromClub: !!(club.associationMemberNumber && club.myTischtennisFedNickname)
                 });
                 return {
                     status: 400,

frontend/src/i18n/locales/de.json

@@ -741,10 +741,9 @@
     "myTischtennisRankings": "myTischtennis TTR/QTTR-Ranglisten",
     "myTischtennisRankingsHint": "Automatischer Abruf der Vereins-Rangliste für TTR- und QTTR-Updates der Mitglieder.",
     "autoFetchRankings": "Ranglisten automatisch abrufen",
-    "myTischtennisClubId": "myTischtennis Vereinsnummer",
-    "myTischtennisClubIdPlaceholder": "z. B. 43030",
     "myTischtennisFedNickname": "Verbandskürzel",
-    "myTischtennisFedNicknamePlaceholder": "z. B. HeTTV"
+    "myTischtennisFedNicknamePlaceholder": "z. B. HeTTV",
+    "rankingsUsesAssociationNumber": "Die Vereinsnummer für den Ranglisten-Abruf entspricht der Verbands-Mitgliedsnummer oben."
   },
   "predefinedActivities": {
     "title": "Vordefinierte Aktivitäten",

frontend/src/views/ClubSettings.vue

@@ -61,15 +61,12 @@
         </label>
       </div>
       <div v-if="autoFetchRankings" class="rankings-fields">
-        <div class="field-group">
-          <label>{{ $t('clubSettings.myTischtennisClubId') }}</label>
-          <input v-model="myTischtennisClubId" class="text-input" :placeholder="$t('clubSettings.myTischtennisClubIdPlaceholder')" />
-        </div>
         <div class="field-group">
           <label>{{ $t('clubSettings.myTischtennisFedNickname') }}</label>
           <input v-model="myTischtennisFedNickname" class="text-input" :placeholder="$t('clubSettings.myTischtennisFedNicknamePlaceholder')" />
         </div>
       </div>
+      <p v-if="autoFetchRankings" class="hint">{{ $t('clubSettings.rankingsUsesAssociationNumber') }}</p>
     </section>
 
     <section v-if="currentClub && !loading" class="card actions-card">
@@ -112,7 +109,6 @@ export default {
       activeTab: 'settings',
       greeting: '',
       associationMemberNumber: '',
-      myTischtennisClubId: '',
       myTischtennisFedNickname: '',
       autoFetchRankings: false,
       saved: false,
@@ -136,7 +132,6 @@ export default {
       if (!this.currentClub) {
         this.greeting = '';
         this.associationMemberNumber = '';
-        this.myTischtennisClubId = '';
         this.myTischtennisFedNickname = '';
         this.autoFetchRankings = false;
         this.loadError = null;
@@ -149,14 +144,12 @@ export default {
         const club = response.data;
         this.greeting = club?.greetingText ?? '';
         this.associationMemberNumber = club?.associationMemberNumber ?? '';
-        this.myTischtennisClubId = club?.myTischtennisClubId ?? '';
         this.myTischtennisFedNickname = club?.myTischtennisFedNickname ?? '';
         this.autoFetchRankings = !!club?.autoFetchRankings;
       } catch (e) {
         this.loadError = this.$t('clubSettings.loadFailed');
         this.greeting = '';
         this.associationMemberNumber = '';
-        this.myTischtennisClubId = '';
         this.myTischtennisFedNickname = '';
         this.autoFetchRankings = false;
       } finally {
@@ -172,7 +165,6 @@ export default {
         await apiClient.put(`/clubs/${this.currentClub}/settings`, {
           greetingText: this.greeting,
           associationMemberNumber: this.associationMemberNumber,
-          myTischtennisClubId: this.myTischtennisClubId || null,
           myTischtennisFedNickname: this.myTischtennisFedNickname || null,
           autoFetchRankings: this.autoFetchRankings,
         });
@@ -211,7 +203,7 @@ export default {
 }
 .text-input { width: 100%; border: 1px solid #ddd; border-radius: 6px; padding: 8px; font-size: 14px; }
 .rankings-row { margin-bottom: 12px; }
-.rankings-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 12px; }
+.rankings-fields { margin-top: 12px; }
 .field-group label { display: block; margin-bottom: 4px; font-weight: 500; color: #333; }
 .checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; }
 .checkbox-label input[type="checkbox"] { width: auto; }