Remove hard timeouts and fallback paths in chat flow

Frontend/server/utils/auth.ts

@@ -69,24 +69,7 @@ export async function getAuthContext(event: H3Event): Promise<AuthContext> {
   });
 
   if (!conv) {
-    // Recover from stale conversation cookie after rebuild/reset:
-    // reuse latest available conversation (or recreate default one) and refresh cookie.
-    const fallback =
-      (await prisma.chatConversation.findFirst({
-        where: { teamId: team.id, createdByUserId: user.id },
-        orderBy: { updatedAt: "desc" },
-      })) ||
-      (await prisma.chatConversation.create({
-        data: { id: `pilot-${team.id}`, teamId: team.id, createdByUserId: user.id, title: "Pilot" },
-      }));
-
-    setSession(event, {
-      teamId: team.id,
-      userId: user.id,
-      conversationId: fallback.id,
-    });
-
-    return { teamId: team.id, userId: user.id, conversationId: fallback.id };
+    throw createError({ statusCode: 401, statusMessage: "Unauthorized" });
   }
 
   return { teamId: team.id, userId: user.id, conversationId: conv.id };