feat(chat): sync multi-role backend APIs

src/stores/chat/machine/send-flow.ts

@@ -76,16 +76,30 @@ const appendUserMessageAction = historyMachineSetup.assign(
 );
 
 const appendQueuedSendErrorMessageAction = historyMachineSetup.assign(
-  ({ context }) => {
+  ({ context, event }) => {
+    if (event.type !== "ChatQueuedSendError") return {};
+    const characterErrorCode = event.characterErrorCode ?? null;
+    const unavailable = characterErrorCode === "CHARACTER_STATE_UNAVAILABLE";
     const messages = [
       ...context.messages,
       {
-        content: "Something went wrong. Try sending again?",
+        content: unavailable
+          ? "This character is temporarily unavailable. Please try again shortly."
+          : "Something went wrong. Try sending again?",
         isFromAI: true,
         date: todayString(),
       },
     ];
-    return { messages, ...finishPendingReply(context) };
+    return {
+      messages,
+      ...finishPendingReply(context),
+      characterErrorCode,
+      canSendMessage:
+        characterErrorCode === "CHARACTER_DISABLED" ||
+        characterErrorCode === "CHARACTER_NOT_FOUND"
+          ? false
+          : context.canSendMessage,
+    };
   },
 );