feat(cleanup): enable 30-day session retention by default (#18854)

packages/cli/src/ui/AppContainer.tsx

@@ -137,6 +137,7 @@ import { useSessionBrowser } from './hooks/useSessionBrowser.js';
 import { persistentState } from '../utils/persistentState.js';
 import { useSessionResume } from './hooks/useSessionResume.js';
 import { useIncludeDirsTrust } from './hooks/useIncludeDirsTrust.js';
+import { useSessionRetentionCheck } from './hooks/useSessionRetentionCheck.js';
 import { isWorkspaceTrusted } from '../config/trustedFolders.js';
 import { useAlternateBuffer } from './hooks/useAlternateBuffer.js';
 import { useSettings } from './contexts/SettingsContext.js';
@@ -1422,6 +1423,28 @@ Logging in with Google... Restarting Gemini CLI to continue.
 
   useIncludeDirsTrust(config, isTrustedFolder, historyManager, setCustomDialog);
 
+  const handleAutoEnableRetention = useCallback(() => {
+    const userSettings = settings.forScope(SettingScope.User).settings;
+    const currentRetention = userSettings.general?.sessionRetention ?? {};
+
+    settings.setValue(SettingScope.User, 'general.sessionRetention', {
+      ...currentRetention,
+      enabled: true,
+      maxAge: '30d',
+      warningAcknowledged: true,
+    });
+  }, [settings]);
+
+  const {
+    shouldShowWarning: shouldShowRetentionWarning,
+    checkComplete: retentionCheckComplete,
+    sessionsToDeleteCount,
+  } = useSessionRetentionCheck(
+    config,
+    settings.merged,
+    handleAutoEnableRetention,
+  );
+
   const tabFocusTimeoutRef = useRef<NodeJS.Timeout | null>(null);
 
   useEffect(() => {
@@ -1900,6 +1923,7 @@ Logging in with Google... Restarting Gemini CLI to continue.
   const nightly = props.version.includes('nightly');
 
   const dialogsVisible =
+    (shouldShowRetentionWarning && retentionCheckComplete) ||
     shouldShowIdePrompt ||
     isFolderTrustDialogOpen ||
     adminSettingsChanged ||
@@ -2012,6 +2036,9 @@ Logging in with Google... Restarting Gemini CLI to continue.
       history: historyManager.history,
       historyManager,
       isThemeDialogOpen,
+      shouldShowRetentionWarning:
+        shouldShowRetentionWarning && retentionCheckComplete,
+      sessionsToDeleteCount: sessionsToDeleteCount ?? 0,
       themeError,
       isAuthenticating,
       isConfigInitialized,
@@ -2125,6 +2152,9 @@ Logging in with Google... Restarting Gemini CLI to continue.
     }),
     [
       isThemeDialogOpen,
+      shouldShowRetentionWarning,
+      retentionCheckComplete,
+      sessionsToDeleteCount,
       themeError,
       isAuthenticating,
       isConfigInitialized,