import type { SeoReport, SeoWorkflow } from "./types.js";
/**
 * Derive a write-once, collision-free `reportId` from `now` + `workflow` +
 * a short hash of `target`. PURE — never reads the clock itself (`now` is
 * caller-injected). `now` is sanitized into a filename-safe slug (mirrors
 * `buildAuditDescriptor`'s slug, `security-audit.ts:78`); `target` is
 * hashed (not embedded raw) so an arbitrary target string can never break
 * the id shape or collide across two different targets.
 */
export declare function deriveReportId(now: string, workflow: SeoWorkflow, target: string): string;
export declare class SeoReportStore {
    /**
     * Write `report` atomically (temp file + POSIX-atomic rename) under
     * `.bober/seo/reports/`. Overwrites any existing report with the same
     * `reportId`. Throws on an unrecoverable fs failure — callers (the
     * runner) are expected to catch and fail closed.
     */
    save(projectRoot: string, report: SeoReport): Promise<void>;
    /**
     * Read a persisted `SeoReport` by id. Returns `null` on a missing file —
     * NEVER throws (mirrors `readSecurityAudit`, `security-audit-state.ts:51-55`).
     */
    read(projectRoot: string, reportId: string): Promise<SeoReport | null>;
    /**
     * List all persisted report ids, sorted by filename. Returns `[]` if the
     * reports directory does not exist — never throws.
     */
    list(projectRoot: string): Promise<string[]>;
}
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