fix: 优化权限提示用词和 Help 页面新手引导

- Help General 页添加 3 步 Getting started 引导，替代单段描述
- 权限对话框底部 "Esc to cancel" → "Esc to reject"，"Tab to amend" → "Tab to add feedback"
- .claude/ 文件夹权限选项标签从 60 字符缩至 49 字符，避免窄终端截断
- 新增 10 个测试覆盖权限提示文案和帮助页引导内容

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/components/permissions/FilePermissionDialog/FilePermissionDialog.tsx

@@ -238,9 +238,9 @@ export function FilePermissionDialog<T extends ToolInput = ToolInput>({
       </PermissionDialog>
       <Box paddingX={1} marginTop={1}>
         <Text dimColor>
-          Esc to cancel
+          Esc to reject
           {((focusedOption === 'yes' && !yesInputMode) || (focusedOption === 'no' && !noInputMode)) &&
-            ' · Tab to amend'}
+            ' · Tab to add feedback'}
         </Text>
       </Box>
     </>

src/components/permissions/FilePermissionDialog/permissionOptions.tsx

@@ -108,7 +108,7 @@ export function getFilePermissionOptions({
   // persisted permission rules.
   if ((inClaudeFolder || inGlobalClaudeFolder) && operationType !== 'read') {
     options.push({
-      label: 'Yes, and allow Claude to edit its own settings for this session',
+      label: 'Yes, allow edits to .claude/ config for this session',
       value: 'yes-claude-folder',
       option: {
         type: 'accept-session',