/**
 * NeverEncodeFilter — pure, total, DROP-only runtime never-encode belt
 * (spec-20260717-seo-improver-builder, Sprint 2; ADR-3). Third belt after
 * parse-time drop (`parser.ts:111`, `policyClassRaw === "never-encode"`) and
 * the skill-content lint (`skills-content.test.ts:26-33`). This belt catches
 * an LLM-*synthesized* banned tactic at runtime — one that was never in a
 * skill file, so belts 1/2 never see it — even when it carries a
 * well-formed `citationUrl` that would otherwise sail through
 * `SeoCitationGate` (`citation-gate.ts:66-90`).
 *
 * Pure and total, mirroring `SeoCitationGate.apply` exactly: imports ONLY
 * `./types.js`. No LLM, no egress, no filesystem, no clock, no
 * `Math.random`. Identical input always yields identical output; never
 * throws. DROP-only (ADR-3 option table, nonGoal #1): unlike the citation
 * gate, this filter does NOT compute a `blocked`/exit-2 flag — a single
 * hallucinated phrase must not brick an otherwise-clean run.
 */
import type { SeoFinding } from "./types.js";
export type NeverEncodeResult = {
    /** Findings whose recommendation/evidence matches NO banned tactic — the ONLY findings passed downstream. */
    kept: SeoFinding[];
    /** Findings whose recommendation/evidence matches a banned never-encode tactic. */
    dropped: SeoFinding[];
};
/**
 * Single exported const so the parser floor (`retriever.ts:34-37`), the
 * benchmark's test-local mirror (`benchmark/harness.ts:79-86`), and this
 * filter share intent (generatorNotes). Case-insensitive, `\b`-anchored to
 * avoid over-matching clean recommendations ("Fix duplicate title tags...",
 * "Add a self-referencing canonical tag."). Covers all 8 sc-2-2 classes:
 * parasite SEO, expired-domain, paid/bought links, PBN/link schemes, mass AI
 * pages, cloaking, doorway pages, AI-recommendation poisoning. The first 6
 * are the existing set (`skills-content.test.ts:26-33`); PBN/cloaking/
 * doorway are new for this sprint.
 */
export declare const NEVER_ENCODE_PATTERNS: readonly RegExp[];
export declare class NeverEncodeFilter {
    /**
     * Partitions `findings` into `kept`/`dropped` by banned-tactic text
     * matching. Pure and total: identical input always yields identical
     * output. DROP-only — never computes a block/exit-code signal (ADR-3).
     */
    apply(findings: SeoFinding[]): NeverEncodeResult;
}
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