fix(chat): relance des dés accessible aux joueurs sur Foundry v14

- Correction du check d'autorisation : message.user -> message.author
  (champ renommé en v12+, message.user est undefined sur v14)
- Les joueurs ne peuvent plus mettre à jour les ChatMessages (permission
  OWNER, option Modifier retirée du menu contextuel en v12+) : la relance
  (dé et effort) est relayée via le socket system.vermine2047 et appliquée
  par le client MJ (registerRerollSocket), avec vérification de l'auteur
- Ajout de la déclaration "socket": true au system.json (requise par le
  serveur pour écouter le namespace system.<id>)

module/system/hooks.mjs

@@ -67,9 +67,9 @@ export const registerHooks = function () {
         }
     })
     Hooks.once("ready", async () => {
-        // System initialized
-        //await registerTours();
-
+        // Relays player rerolls to the GM client (Foundry v14 ChatMessage
+        // updates are GM-only).
+        VermineUtils.registerRerollSocket();
     });
 
     // changement de la pause

module/system/roll.mjs

@@ -204,9 +204,10 @@ export class VermineUtils {
    * @returns {Promise<boolean>} Whether the reroll was successful
    */
   static async onReroll(message, target) {
-    // Verify user permissions
-    const msgUserId = message.user?.id ?? message.user;
-    if (msgUserId !== game.user?.id && !game.user?.isGM) {
+    // Verify user permissions. Foundry v14 renamed the ChatMessage field
+    // `user` to `author`, so `message.user` is undefined on this core.
+    const msgAuthorId = message.author?.id ?? message.user?.id ?? message.user;
+    if (msgAuthorId !== game.user?.id && !game.user?.isGM) {
       ui.notifications.warn(game.i18n.localize('VERMINE.error_cannot_reroll'));
       return false;
     }
@@ -231,9 +232,6 @@ export class VermineUtils {
 
     target.classList.add('rerolled');
 
-    // Set reroll flag
-    await message.setFlag("world", "reroll", true);
-
     // Get difficulty and dice type
     const ulElement = target.closest('ul');
     const difficulty = ulElement?.dataset.difficulty ?? 7;
@@ -331,14 +329,55 @@ export class VermineUtils {
           + mk('adapted', stats.adapted.count, stats.adapted.success);
       }
 
-      await message.update({
-        content: messageContent.outerHTML
-      });
+      // Persist the reroll. The GM writes the message directly ; players
+      // cannot update ChatMessages on Foundry v14 (permission "OWNER"), so
+      // their reroll is relayed through the system socket and applied by the
+      // GM client (see registerRerollSocket).
+      if (game.user?.isGM) {
+        await message.setFlag("world", "reroll", true);
+        await message.update({
+          content: messageContent.outerHTML
+        });
+      } else {
+        game.socket?.emit(`system.${game.system.id}`, {
+          type: "reroll",
+          messageId: message.id,
+          requestId: foundry.utils.randomID(8),
+          content: messageContent.outerHTML
+        });
+      }
     }
 
     return true;
   }
 
+  /**
+   * Registers the system socket listener which applies rerolls requested by
+   * players. Foundry v14 only allows GMs to update ChatMessages, so player
+   * rerolls are relayed to the GM client through `system.<id>` (see onReroll).
+   * Call once after the world is ready; re-registration replaces the handler.
+   */
+  static registerRerollSocket() {
+    const eventName = `system.${game.system.id}`;
+    const handler = async (payload, userId) => {
+      if (!game.user?.isGM) return;
+      if (payload?.type !== "reroll") return;
+      const message = game.messages.get(payload.messageId);
+      if (!message) return;
+      // Security: only the message author may request the reroll update.
+      if (message.author?.id !== userId) return;
+      await message.setFlag("world", "reroll", true);
+      await message.update({ content: payload.content });
+    };
+    if (VermineUtils.#rerollSocketHandler) {
+      game.socket?.off(eventName, VermineUtils.#rerollSocketHandler);
+    }
+    VermineUtils.#rerollSocketHandler = handler;
+    game.socket?.on(eventName, handler);
+  }
+
+  static #rerollSocketHandler;
+
   /**
    * Sets up event listeners for chat messages.
    * @param {HTMLElement} html - The HTML element containing chat events.
@@ -396,8 +435,19 @@ export class VermineUtils {
           const rollMessage = btn.closest(".vermine-roll-message");
           if (rollMessage) {
             const content = rollMessage.outerHTML;
-            const message = await game.messages.get(messageId);
-            await message.update({ content: content });
+            // GM applies the update directly ; players relay through the
+            // system socket (Foundry v14 ChatMessage updates are GM-only).
+            if (game.user?.isGM) {
+              const message = await game.messages.get(messageId);
+              await message.update({ content: content });
+            } else {
+              game.socket?.emit(`system.${game.system.id}`, {
+                type: "reroll",
+                messageId: messageId,
+                requestId: foundry.utils.randomID(8),
+                content: content
+              });
+            }
           }
         }
       });

system.json

@@ -168,6 +168,7 @@
     "distance": 1,
     "units": "m"
   },
+  "socket": true,
   "primaryTokenAttribute": "health",
   "secondaryTokenAttribute": "power",
   "url": "https://www.uberwald.me/gitea/uberwald/vermine2047",