chore: update live chat and work server changes

etc/servers/work-server/src/routes/chat.ts

@@ -148,7 +148,22 @@ function canViewAllConversations(request: { headers: Record<string, unknown> })
   return hasErrorLogViewAccessToken(request.headers['x-access-token'] as string | string[] | undefined);
 }
 
+function applyChatApiNoStoreHeaders(reply: FastifyReply) {
+  reply.header('Cache-Control', 'no-store, no-cache, max-age=0, must-revalidate');
+  reply.header('Pragma', 'no-cache');
+  reply.header('Expires', '0');
+  reply.header('Surrogate-Control', 'no-store');
+}
+
 export async function registerChatRoutes(app: FastifyInstance) {
+  app.addHook('onSend', async (request, reply, payload) => {
+    if (request.method.toUpperCase() === 'GET' && request.url.startsWith('/api/chat')) {
+      applyChatApiNoStoreHeaders(reply);
+    }
+
+    return payload;
+  });
+
   app.get(`${CHAT_PUBLIC_ROUTE_PREFIX}*`, async (request, reply) => {
     const wildcard = String((request.params as { '*': string | undefined })['*'] ?? '').trim();
     return serveChatPublicResource(resolveChatAttachmentRepoPath(), wildcard, reply);