feat(ui): Introduce useUI Hook and UIContext (#5488)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/cli/src/ui/hooks/useFolderTrust.ts

@@ -5,7 +5,8 @@
  */
 
 import { useState, useCallback, useEffect } from 'react';
-import type { Settings, LoadedSettings } from '../../config/settings.js';
+import { type Config } from '@google/gemini-cli-core';
+import type { LoadedSettings } from '../../config/settings.js';
 import { FolderTrustChoice } from '../components/FolderTrustDialog.js';
 import {
   loadTrustedFolders,
@@ -16,26 +17,21 @@ import * as process from 'node:process';
 
 export const useFolderTrust = (
   settings: LoadedSettings,
+  config: Config,
   onTrustChange: (isTrusted: boolean | undefined) => void,
 ) => {
   const [isTrusted, setIsTrusted] = useState<boolean | undefined>(undefined);
   const [isFolderTrustDialogOpen, setIsFolderTrustDialogOpen] = useState(false);
-  const [isRestarting, setIsRestarting] = useState(false);
+  const [isRestarting] = useState(false);
 
   const folderTrust = settings.merged.security?.folderTrust?.enabled;
 
   useEffect(() => {
-    const trusted = isWorkspaceTrusted({
-      security: {
-        folderTrust: {
-          enabled: folderTrust,
-        },
-      },
-    } as Settings);
+    const trusted = isWorkspaceTrusted(settings.merged);
     setIsTrusted(trusted);
     setIsFolderTrustDialogOpen(trusted === undefined);
     onTrustChange(trusted);
-  }, [onTrustChange, folderTrust]);
+  }, [folderTrust, onTrustChange, settings.merged]);
 
   const handleFolderTrustSelect = useCallback(
     (choice: FolderTrustChoice) => {
@@ -43,8 +39,6 @@ export const useFolderTrust = (
       const cwd = process.cwd();
       let trustLevel: TrustLevel;
 
-      const wasTrusted = isTrusted ?? true;
-
       switch (choice) {
         case FolderTrustChoice.TRUST_FOLDER:
           trustLevel = TrustLevel.TRUST_FOLDER;
@@ -60,21 +54,12 @@ export const useFolderTrust = (
       }
 
       trustedFolders.setValue(cwd, trustLevel);
-      const newIsTrusted =
-        trustLevel === TrustLevel.TRUST_FOLDER ||
-        trustLevel === TrustLevel.TRUST_PARENT;
-      setIsTrusted(newIsTrusted);
-      onTrustChange(newIsTrusted);
-
-      const needsRestart = wasTrusted !== newIsTrusted;
-      if (needsRestart) {
-        setIsRestarting(true);
-        setIsFolderTrustDialogOpen(true);
-      } else {
-        setIsFolderTrustDialogOpen(false);
-      }
+      const trusted = isWorkspaceTrusted(settings.merged);
+      setIsTrusted(trusted);
+      setIsFolderTrustDialogOpen(false);
+      onTrustChange(trusted);
     },
-    [onTrustChange, isTrusted],
+    [settings.merged, onTrustChange],
   );
 
   return {