/**
 * The title-bar strip resolution chain — the ONE place that decides how
 * many pixels the sidebar yields at the top. Standard signals first, then
 * the user's chosen scheme; never a per-shell branch:
 *
 *   0. `web` scheme — EXPLICIT "DSH official web": never adapt, not even
 *      standard WCO geometry (the user declares the plain web UI).
 *   1. Window Controls Overlay real geometry (standard API, authoritative
 *      when present — even 0, e.g. the overlay is hidden while maximized).
 *   2. The `dsh-desktop-titlebar-inset` URL contract parameter (a shell
 *      declares the exact pixels it reserves).
 *   3. The active shell preset's strip (scheme `preset` — opt-in data).
 *   4. The legacy manual `titleBarStripPx` (scheme `custom`).
 *   5. 0 — plain-browser semantics, nothing modified.
 *
 * The result drives `--dsh-title-bar-strip` + `body[data-dsh-title-bar-compat]`
 * exactly like the legacy boolean did; only the VALUE source changed.
 */
import type { DesktopEnv } from './desktop-env.ts';
import type { TitleBarScheme } from '../prefs-shared.ts';
import type { WcoSnapshot } from './wco.ts';
import { type ShellPreset } from './shell-presets.ts';
export declare function computeTitleBarStrip(env: DesktopEnv, wco: WcoSnapshot, scheme: TitleBarScheme, preset: ShellPreset | undefined, customStripPx: number): number;