feat: improve codex app controls and recovery

lib/codex-app-runtime.js

@@ -1,5 +1,10 @@
 'use strict';
 
+const CODEX_APP_ONCE_NOTICE_PATTERNS = [
+  /^Under-development features enabled:/i,
+  /^Heads up: Long threads and multiple compactions/i,
+];
+
 function createCodexAppRuntime(deps = {}) {
   const {
     wsSend,
@@ -14,6 +19,23 @@ function createCodexAppRuntime(deps = {}) {
     return text.length > maxLen ? `${text.slice(0, maxLen)}...` : value;
   }
 
+  const shownOnceNoticeKeys = new Set();
+
+  function normalizeNoticeMessage(message) {
+    return String(message || '').trim().replace(/\s+/g, ' ');
+  }
+
+  function shouldShowRuntimeNotice(method, message) {
+    const normalized = normalizeNoticeMessage(message);
+    const isOnceNotice = CODEX_APP_ONCE_NOTICE_PATTERNS.some((pattern) => pattern.test(normalized));
+    if (!isOnceNotice) return true;
+
+    const key = `${method}:${normalized}`;
+    if (shownOnceNoticeKeys.has(key)) return false;
+    shownOnceNoticeKeys.add(key);
+    return true;
+  }
+
   function sendRuntime(entry, sessionId, payload) {
     wsSend(entry.ws, { ...payload, sessionId });
   }
@@ -483,7 +505,9 @@ function createCodexAppRuntime(deps = {}) {
         const message = params.message || params.title || '';
         if (message) {
           if (method === 'error') entry.lastError = message;
-          sendRuntime(entry, sessionId, { type: 'system_message', message });
+          if (method === 'error' || shouldShowRuntimeNotice(method, message)) {
+            sendRuntime(entry, sessionId, { type: 'system_message', message });
+          }
         }
         return { done: false };
       }