/**
 * Chat Input Extension
 *
 * Replaces pi's input editor with a configurable boxed input. All native
 * editor features — cursor movement, history, autocomplete, paste — work
 * normally inside the box. Also implements paste-again-to-expand: when a
 * collapsed `[paste #N ...]` marker is present, pasting the same content
 * again expands it inline so you can see and edit the actual text.
 *
 * Evolved from the earlier `box-editor.ts`: the rendering is now
 * config-driven (~/.pi/agent/configs/composer.json) and supports a
 * prefix glyph, boxed/unboxed modes, configurable padding, menu gap,
 * rounded vs square corners, a configurable session-name inlay in the border
 * (shown only when the session has a name — or another extension has pushed
 * label text over the `pi.events` bus; see the README's Extension API), and
 * working-state animations (spinner prefix and border glow while the agent
 * works). The rounded ╭╮│╰╯ corners remain the default to preserve the
 * original look. Paste-expand behavior was merged in from the former
 * standalone `paste-expand.ts` so the two features don't fight over
 * `setEditorComponent` (last-call-wins).
 *
 * Layout (boxed):
 *   ╭──────────────────────────╮
 *   │ ❯ <content>               │
 *   │   <content continued>     │
 *   ╰──────────────────────────╯
 *   <autocomplete menu>
 *
 * The prefix (default ❯, any cell width) is shown only on the first body line;
 * subsequent lines are indented by the prefix's width so content aligns.
 * Autocomplete lines render below the box, indented by `extraMenuIndent`.
 */
import { type ExtensionAPI } from '@earendil-works/pi-coding-agent';
export default function composer(pi: ExtensionAPI): void;