fix: quest progression (events after tx), abandon quest, endurance display

- Events (achievement/community/quest) émis APRÈS la transaction combat
  au lieu de dedans — corrige les quêtes qui ne progressaient pas
- POST /api/quests/abandon/:id — abandonner une quête active
- Frontend: bouton "Abandonner" sur les quêtes actives non complétées
- Fix endurance display (enduranceCurrent field mapping)
- Types Character mis à jour (xpToNextLevel, activeTitle, enduranceCurrent)

frontend/src/pages/QuestPage.tsx

@@ -18,25 +18,28 @@ function QuestCard({ pq, mode }: { pq: any; mode: 'active' | 'available' | 'comp
   const status = mode === 'active' ? pq.status : 'available';
   const pct = Math.min(100, Math.floor((progress / quest.objectiveCount) * 100));
 
+  const invalidateAll = () => {
+    qc.invalidateQueries({ queryKey: ['quests'] });
+    qc.invalidateQueries({ queryKey: ['questsActive'] });
+    qc.invalidateQueries({ queryKey: ['questsAvailable'] });
+    qc.invalidateQueries({ queryKey: ['questsCompleted'] });
+    qc.invalidateQueries({ queryKey: ['questArcs'] });
+    qc.invalidateQueries({ queryKey: ['character'] });
+  };
+
   const acceptMut = useMutation({
     mutationFn: () => questApi.accept(quest.id),
-    onSuccess: () => {
-      qc.invalidateQueries({ queryKey: ['quests'] });
-      qc.invalidateQueries({ queryKey: ['questsActive'] });
-      qc.invalidateQueries({ queryKey: ['questsAvailable'] });
-    },
+    onSuccess: invalidateAll,
   });
 
   const claimMut = useMutation({
     mutationFn: () => questApi.claim(pq.id),
-    onSuccess: () => {
-      qc.invalidateQueries({ queryKey: ['quests'] });
-      qc.invalidateQueries({ queryKey: ['questsActive'] });
-      qc.invalidateQueries({ queryKey: ['questsAvailable'] });
-      qc.invalidateQueries({ queryKey: ['questsCompleted'] });
-      qc.invalidateQueries({ queryKey: ['questArcs'] });
-      qc.invalidateQueries({ queryKey: ['character'] });
-    },
+    onSuccess: invalidateAll,
+  });
+
+  const abandonMut = useMutation({
+    mutationFn: () => questApi.abandon(pq.id),
+    onSuccess: invalidateAll,
   });
 
   const isCompleted = status === 'completed';
@@ -96,8 +99,19 @@ function QuestCard({ pq, mode }: { pq: any; mode: 'active' | 'available' | 'comp
           {claimMut.isPending ? 'Réclamation…' : '🎁 Réclamer la récompense'}
         </button>
       )}
+      {mode === 'active' && !isCompleted && (
+        <button
+          className="btn btn-ghost"
+          style={{ fontSize: 10, padding: '0.2rem 0.5rem', color: '#6b7a99' }}
+          disabled={abandonMut.isPending}
+          onClick={() => abandonMut.mutate()}
+        >
+          {abandonMut.isPending ? '…' : '✕ Abandonner'}
+        </button>
+      )}
       {acceptMut.isError && <p style={{ color: '#e84040', fontSize: 11, marginTop: 4 }}>{(acceptMut.error as Error).message}</p>}
       {claimMut.isError && <p style={{ color: '#e84040', fontSize: 11, marginTop: 4 }}>{(claimMut.error as Error).message}</p>}
+      {abandonMut.isError && <p style={{ color: '#e84040', fontSize: 11, marginTop: 4 }}>{(abandonMut.error as Error).message}</p>}
     </div>
   );
 }