fix(planka): position obligatoire pour déplacer une carte + filtre listes None

- dropCard envoie position (max+65535) car Planka l'exige pour changer listId
- Ajout vérification res.ok + toast d'erreur/succès
- Filtre les listes avec name='None' (placeholders Planka sans nom)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

modules/planka/api.php

@@ -69,9 +69,10 @@ if ($action === 'board') {
     $resp = planka_api('GET', '/api/boards/' . $id, null, $token);
     $inc = $resp['included'] ?? [];
 
-    // Filter lists that actually belong to this board (prevents ghost lists from other boards)
+    // Filter: only lists with a real name (Planka creates unnamed "None" placeholder lists)
     $lists = array_values(array_filter($inc['lists'] ?? [], fn($l) =>
-        isset($l['boardId']) ? $l['boardId'] === $id : true
+        !empty($l['name']) && $l['name'] !== 'None' &&
+        (isset($l['boardId']) ? $l['boardId'] === $id : true)
     ));
     // Filter cards that belong to a list in this board
     $listIds = array_column($lists, 'id');

planka.php

@@ -205,9 +205,16 @@ async function dropCard(listId) {
     if (!dragCardId) return;
     const card = state.cards.find(c => c.id === dragCardId);
     if (!card || card.listId === listId) return;
-    await apiFetch('update_card', { id: dragCardId }, 'PATCH', { listId });
+    // Planka requires position when changing listId
+    const targetCards = state.cards.filter(c => c.listId === listId);
+    const maxPos = targetCards.reduce((m, c) => Math.max(m, c.position || 0), 0);
+    const position = maxPos + 65535;
+    const res = await apiFetch('update_card', { id: dragCardId }, 'PATCH', { listId, position });
+    if (!res.ok) { showToast('Erreur déplacement : ' + (res.error || 'inconnu'), 'error'); return; }
     card.listId = listId;
+    card.position = position;
     renderBoard();
+    showToast('Carte déplacée');
 }
 
 async function quickAddCard(listId) {