/**
 * CodeRifts agent-host policy text.
 *
 * Vendored from coderifts-app `src/agent-host-rule.js` `getCanonicalRuleText()`.
 * Drift-gated by `test/policy-vendored-sync.test.js` (byte-equal to the app
 * canonical text; missing app checkout fails loud — never skip).
 *
 * This proves the TEXT is present when injected/detected, not that the model
 * read or obeyed it.
 */
/** Phrase present in ALL seven generated host formats (AGENTS.md, CLAUDE.md, cursor rules, Copilot instructions, LangGraph policy, OpenAI agent instructions, skills/api-governance/SKILL.md). */
export declare const POLICY_MARKER = "A receipt authorizes ONE operation: a merge receipt does not authorize a deploy.";
/** Canonical policy body (paragraphs joined by blank lines). */
export declare const CODERIFTS_POLICY: string;
/** Once-per-process warning when the host supplied a prompt that lacks the marker. */
export declare const POLICY_ABSENT_WARN = "CodeRifts policy text not detected in the system prompt. The agent will still see the tools, but measured evidence shows operation-scope misuse is markedly more likely without it. See https://github.com/coderifts/agent-guard#policy-delivery.";
export type PolicyPresence = 'detected' | 'absent' | 'unknown';
export type WithPolicyOptions = {
    /**
     * Default true. `false` returns a non-mutated copy and does not append.
     * Opt-out for hosts that call `withPolicy` from a shared wrapper.
     */
    injectPolicy?: boolean;
};
/** Minimal chat message shape (OpenAI/Anthropic-compatible). Extra fields are preserved. */
export type PolicyMessage = {
    role: string;
    content?: unknown;
    [key: string]: unknown;
};
/**
 * Observation-only classification of host-supplied instruction text.
 * `null`/`undefined` -> `unknown` (host did not tell us). Anything else is
 * `detected` or `absent` based on POLICY_MARKER.
 */
export declare function policyPresenceOf(text: string | null | undefined): PolicyPresence;
/** Alias used by hosts that call the check at startup without the guard. */
export declare function detectPolicyPresence(text: string | null | undefined): PolicyPresence;
/**
 * Append the canonical policy text if the marker is not already present.
 * Never mutates the caller's string/array/objects — always returns a new value
 * for arrays; strings are new only when appending.
 */
export declare function withPolicy(input: string, opts?: WithPolicyOptions): string;
export declare function withPolicy<T extends PolicyMessage>(input: readonly T[], opts?: WithPolicyOptions): T[];
/** Once-per-process warn. Subsequent absent detections stay silent. */
export declare function warnPolicyAbsentOnce(): void;
/**
 * Classify + maybe warn. `unknown` never warns. `detected` is silent.
 * `absent` warns once per process.
 */
export declare function observePolicyPresence(text: string | null | undefined): PolicyPresence;
/** Test-only: allow the once-warn to fire again. */
export declare function resetPolicyWarnForTests(): void;
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