Enhance Exercise Progression Graph Panel with Club Management Features

- Added functionality to select and manage clubs within the Exercise Progression Graph Panel, allowing users to assign clubs to exercises.
- Introduced state management for club selection and manual entry, improving user experience for platform admins.
- Updated visibility handling to ensure proper governance and club association during exercise promotion.
- Enhanced error handling to provide clearer feedback when no club is selected, ensuring users are guided to make necessary selections.

frontend/src/components/ExerciseProgressionGraphPanel.jsx

@@ -13,7 +13,7 @@ import { Link, useLocation } from 'react-router-dom'
 import api from '../utils/api'
 import SkillProfilePanel from './skills/SkillProfilePanel'
 import { useAuth } from '../context/AuthContext'
-import { activeClubMemberships, getTenantClubDependencyKey } from '../utils/activeClub'
+import { activeClubMemberships, getDefaultClubIdForGovernanceForms, getTenantClubDependencyKey } from '../utils/activeClub'
 import ProgressionGraphEditor from './ProgressionGraphEditor'
 import ProgressionGraphListCard from './ProgressionGraphListCard'
 import { EXERCISE_VISIBILITY_FIELD_LABEL } from '../constants/exerciseGovernanceLabels'
@@ -41,6 +41,8 @@ function ExerciseProgressionGraphPanel(
   const { user } = useAuth()
   const location = useLocation()
   const isSuperadmin = user?.role === 'superadmin'
+  const isPlatformAdmin = isSuperadmin || user?.role === 'admin'
+  const memberClubs = useMemo(() => activeClubMemberships(user?.clubs), [user?.clubs])
   const tenantClubDepKey = useMemo(() => getTenantClubDependencyKey(user), [user])
 
   const filteredGraphVisOptions = useMemo(
@@ -61,6 +63,8 @@ function ExerciseProgressionGraphPanel(
   const [metaName, setMetaName] = useState('')
   const [metaDescription, setMetaDescription] = useState('')
   const [metaVisibility, setMetaVisibility] = useState('private')
+  const [metaClubSelect, setMetaClubSelect] = useState('')
+  const [metaClubManual, setMetaClubManual] = useState('')
 
   const [filterAnchorOnly, setFilterAnchorOnly] = useState(!!anchorExerciseId)
   const [editingEdgeNotes, setEditingEdgeNotes] = useState(null)
@@ -157,6 +161,8 @@ function ExerciseProgressionGraphPanel(
       setMetaName('')
       setMetaDescription('')
       setMetaVisibility('private')
+      setMetaClubSelect('')
+      setMetaClubManual('')
       return
     }
     const g = graphs.find((x) => x.id === selectedGraphId)
@@ -164,6 +170,13 @@ function ExerciseProgressionGraphPanel(
       setMetaName(g.name || '')
       setMetaDescription(g.description || '')
       setMetaVisibility(g.visibility || 'private')
+      if (g.club_id != null) {
+        setMetaClubSelect(String(g.club_id))
+      } else {
+        const fallback = getDefaultClubIdForGovernanceForms(user)
+        setMetaClubSelect(fallback != null ? String(fallback) : '')
+      }
+      setMetaClubManual('')
     }
     let cancelled = false
     ;(async () => {
@@ -176,7 +189,20 @@ function ExerciseProgressionGraphPanel(
     return () => {
       cancelled = true
     }
-  }, [selectedGraphId, graphs, refreshEdges])
+  }, [selectedGraphId, graphs, refreshEdges, user])
+
+  const resolveGovernanceClubId = useCallback(() => {
+    const g = graphs.find((x) => x.id === selectedGraphId)
+    if (g?.club_id != null) return Number(g.club_id)
+
+    const manual = String(metaClubManual || '').trim()
+    if (manual && /^\d+$/.test(manual)) return Number(manual)
+
+    const sel = String(metaClubSelect || '').trim()
+    if (sel && /^\d+$/.test(sel)) return Number(sel)
+
+    return getDefaultClubIdForGovernanceForms(user)
+  }, [graphs, selectedGraphId, metaClubManual, metaClubSelect, user])
 
   const filteredEdges = useMemo(() => {
     if (!filterAnchorOnly || anchorExerciseId == null) return edges
@@ -226,13 +252,7 @@ function ExerciseProgressionGraphPanel(
     }
   }
 
-  const resolvePromoteClubId = () => {
+  const resolvePromoteClubId = resolveGovernanceClubId
-    const g = graphs.find((x) => x.id === selectedGraphId)
-    if (g?.club_id != null) return Number(g.club_id)
-    const memberships = activeClubMemberships(user?.clubs)
-    const active = memberships.find((c) => c.is_active) || memberships[0]
-    return active?.club_id != null ? Number(active.club_id) : null
-  }
 
   const handleSaveMeta = async () => {
     if (!selectedGraphId) return
@@ -268,7 +288,9 @@ function ExerciseProgressionGraphPanel(
           if (promote) {
             const clubId = resolvePromoteClubId()
             if (!clubId) {
-              alert('Kein aktiver Verein — Übungen können nicht auf Verein promoted werden.')
+              throw new Error(
+                'Kein Verein gewählt — bitte unter „Verein zuordnen“ einen Verein auswählen oder den Vereins-Umschalter nutzen.',
+              )
             } else {
               const ids = privateExercises.map((ex) => ex.id).filter((id) => id != null)
               const res = await api.bulkPatchExercisesMetadata({
@@ -286,6 +308,11 @@ function ExerciseProgressionGraphPanel(
       }
 
       const promoteClubId = nextVis === 'club' ? resolvePromoteClubId() : null
+      if (nextVis === 'club' && !promoteClubId) {
+        throw new Error(
+          'Vereins-Sichtbarkeit: Bitte einen Verein unter „Verein zuordnen“ wählen oder den Vereins-Umschalter setzen.',
+        )
+      }
       await api.updateExerciseProgressionGraph(selectedGraphId, {
         name,
         description: metaDescription.trim() || null,
@@ -541,7 +568,14 @@ function ExerciseProgressionGraphPanel(
             <select
               className="form-input"
               value={metaVisibility}
-              onChange={(e) => setMetaVisibility(e.target.value)}
+              onChange={(e) => {
+                const v = e.target.value
+                setMetaVisibility(v)
+                if (v === 'club' && !metaClubSelect) {
+                  const fb = getDefaultClubIdForGovernanceForms(user)
+                  if (fb != null) setMetaClubSelect(String(fb))
+                }
+              }}
             >
               {filteredGraphVisOptions.map((o) => (
                 <option key={o.value} value={o.value}>
@@ -550,6 +584,38 @@ function ExerciseProgressionGraphPanel(
               ))}
             </select>
           </div>
+          {metaVisibility === 'club' ? (
+            <div className="form-row">
+              <label className="form-label">Verein zuordnen</label>
+              <select
+                className="form-input"
+                value={metaClubSelect}
+                onChange={(e) => setMetaClubSelect(e.target.value)}
+              >
+                <option value="">Aktiver Verein (Vereins-Umschalter / Header)</option>
+                {memberClubs.map((c) => (
+                  <option key={c.id} value={String(c.id)}>
+                    {c.name || `Verein #${c.id}`}
+                  </option>
+                ))}
+              </select>
+              {isPlatformAdmin ? (
+                <>
+                  <label className="form-label" style={{ marginTop: '10px' }}>
+                    Oder Vereins-ID (Plattform-Admin)
+                  </label>
+                  <input
+                    type="number"
+                    min={1}
+                    className="form-input"
+                    placeholder="Leer = wie Dropdown / aktiver Verein"
+                    value={metaClubManual}
+                    onChange={(e) => setMetaClubManual(e.target.value)}
+                  />
+                </>
+              ) : null}
+            </div>
+          ) : null}
           <div style={{ display: 'flex', gap: '8px', flexWrap: 'wrap' }}>
             <button type="button" className="btn btn-secondary" disabled={busy} onClick={handleSaveMeta}>
               Metadaten speichern