/**
 * pre-action-messages — pure message formatters for the bootstrap
 * `preAction` hook.
 *
 * Extracted from `pre-action-hook.ts` to keep that file focused on the
 * hook's control flow. Everything here is a pure string builder: no
 * logging, no process exit, no IO — given the same input it returns the
 * same text. The hook owns the side effects (writing these to stderr and
 * exiting); these functions only render.
 */
/** Inputs for {@link formatCliTooOldMessage}. */
export interface CliTooOldInput {
    readonly root: string;
    readonly configVersion: number;
    readonly cliVersion: number;
}
/**
 * Render the "your CLI is too old" message. Direction-correct: when the
 * config schema is newer than the CLI knows about, the USER UPGRADES
 * THE CLI — not "run migrate" (migrate goes the OTHER direction, taking
 * an old config UP to the current CLI's version).
 */
export declare function formatCliTooOldMessage(input: CliTooOldInput): string;
/**
 * Render the human "no opensip-cli project found" explainer — the actionable
 * walked-up-to-root message with the `init` hint. The `--json` shape is no longer
 * rendered here: a no-project failure is a `BootstrapError` the top-level boundary
 * turns into a structured `bootstrap.error` `CommandOutcome` (launch,
 * §4.7), so this formatter is the human path only.
 */
export declare function formatNoProjectFoundMessage(cwd: string): string;
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