/**
 * Approval-panel diff headline rebuild.
 *
 * The harness ApprovalPanel headlines the `reason` text in `.headline`; the
 * plugin rebuilds that plain-text diff into per-line rows. The host emits a
 * flat text format — header line, then change rows with a right-aligned line
 * number, `|`, and `+content` / `-content` (e.g. `   15| +XI-EDITED`),
 * context rows (`old:new content`), and a ` ⋯` gap row between hunks. This
 * module renders ONLY the changed rows — removals red, additions green — and
 * marks every skipped run (context, hunk gaps) with a `…` ellipsis, so a big
 * edit stays compact. Pure DOM helpers, no framework imports — unit-testable
 * in jsdom.
 *
 * @module dsh-edit-approval/client/diff-rows
 */
/**
 * Whether an approval reason is a real line diff: it carries numbered change
 * rows (`   15| +XI-EDITED`). Edit approvals always do; the bash-approval
 * reason is plain text (header + `$ command` [+ flags]) and must NOT go
 * through {@link renderDiffRows} — the rebuild would treat its non-diff lines
 * as skipped context and collapse the command itself into an ellipsis.
 */
export declare function isDiffReason(text: string): boolean;
/**
 * Rebuild the headline: keep the header line (tool · file · stats) as a muted
 * title, then render the number-first change rows with their role color.
 * Context rows, ` ⋯` hunk gaps and the capped tail carry no `+`/`-` marker
 * and are omitted, with an ellipsis marking each skipped run between rendered
 * rows. Purely additive DOM; the panel is mounted once per approval and never
 * re-renders the reason text, so the replacement cannot be clobbered by
 * React. Only call this when {@link isDiffReason} is true.
 */
export declare function renderDiffRows(headline: HTMLElement): void;