fix(cli): optimize large paste performance and add progress indicator

packages/cli/src/ui/components/Footer.tsx

@@ -26,12 +26,44 @@ import { GeminiSpinner } from './GeminiRespondingSpinner.js';
 import { GoalPill, useFooterGoalState } from './GoalPill.js';
 import { CronPill, useFooterCronTaskCount } from './CronPill.js';
 import { t } from '../../i18n/index.js';
+import { useKeypressContext } from '../contexts/KeypressContext.js';
+
+import type { PasteProgress } from '../contexts/KeypressContext.js';
+
+const PASTE_BAR_WIDTH = 20;
+
+const PasteProgressBar: React.FC<{ progress: PasteProgress }> = ({
+  progress,
+}) => {
+  const { receivedBytes, totalBytes } = progress;
+  const kb = receivedBytes / 1024;
+  const label = kb >= 1 ? `${kb.toFixed(0)} KB` : `${receivedBytes} B`;
+
+  if (totalBytes && totalBytes > 0) {
+    const pct = Math.min(1, receivedBytes / totalBytes);
+    const filled = Math.round(pct * PASTE_BAR_WIDTH);
+    const bar = '█'.repeat(filled) + '░'.repeat(PASTE_BAR_WIDTH - filled);
+    const pctLabel = `${Math.round(pct * 100)}%`;
+    return (
+      <Text dimColor>
+        {t('Pasting…')} <Text color="blue">{bar}</Text> {pctLabel} ({label})
+      </Text>
+    );
+  }
+
+  return (
+    <Text dimColor>
+      {t('Pasting…')} {label}
+    </Text>
+  );
+};
 
 export const Footer: React.FC = () => {
   const uiState = useUIState();
   const config = useConfig();
   const settings = useSettings();
   const { vimEnabled, vimMode } = useVimModeState();
+  const { pasteProgress } = useKeypressContext();
   const {
     lines: statusLineLines,
     useThemeColors,
@@ -83,6 +115,8 @@ export const Footer: React.FC = () => {
     <Text color={theme.status.warning}>{t('Press Ctrl+D again to exit.')}</Text>
   ) : uiState.showEscapePrompt ? (
     <Text color={theme.text.secondary}>{t('Press Esc again to clear.')}</Text>
+  ) : pasteProgress.active ? (
+    <PasteProgressBar progress={pasteProgress} />
   ) : uiState.rewindEscPending ? (
     <Text color={theme.text.secondary}>
       {t('Press Esc again to rewind conversation.')}