feat(accessibility): implement centralized screen reader layout system (#8155)

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

@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { useUIState } from '../contexts/UIStateContext.js';
+import { useConfig } from '../contexts/ConfigContext.js';
+import { useSettings } from '../contexts/SettingsContext.js';
+
+export const useFooterProps = () => {
+  const uiState = useUIState();
+  const config = useConfig();
+  const settings = useSettings();
+
+  return {
+    model: config.getModel(),
+    targetDir: config.getTargetDir(),
+    debugMode: config.getDebugMode(),
+    branchName: uiState.branchName,
+    debugMessage: uiState.debugMessage,
+    corgiMode: uiState.corgiMode,
+    errorCount: uiState.errorCount,
+    showErrorDetails: uiState.showErrorDetails,
+    showMemoryUsage:
+      config.getDebugMode() || settings.merged.ui?.showMemoryUsage || false,
+    promptTokenCount: uiState.sessionStats.lastPromptTokenCount,
+    nightly: uiState.nightly,
+    isTrustedFolder: uiState.isTrustedFolder,
+    vimMode: undefined,
+  };
+};

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

@@ -0,0 +1,38 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { useIsScreenReaderEnabled } from 'ink';
+
+export interface LayoutConfig {
+  shouldUseStatic: boolean;
+  shouldShowFooterInComposer: boolean;
+  mode: 'default' | 'screenReader';
+  allowStaticToggle?: boolean;
+}
+
+export interface LayoutConfigOptions {
+  forceStaticMode?: boolean;
+  allowToggle?: boolean;
+}
+
+export const useLayoutConfig = (
+  options?: LayoutConfigOptions,
+): LayoutConfig => {
+  const isScreenReader = useIsScreenReaderEnabled();
+
+  // Allow overriding static behavior when toggle is enabled
+  const shouldUseStatic =
+    options?.forceStaticMode !== undefined
+      ? options.forceStaticMode
+      : !isScreenReader;
+
+  return {
+    shouldUseStatic,
+    shouldShowFooterInComposer: !isScreenReader,
+    mode: isScreenReader ? 'screenReader' : 'default',
+    allowStaticToggle: options?.allowToggle ?? false,
+  };
+};