/**
 * SMI-4415: Signal-of-intent gate for the GitHub importer.
 *
 * Purpose: between the de-duplication step and the blocklist / saveOutput
 * step in `import-github-skills.ts`, drop repositories that do not exhibit
 * a *structural* signal of being a Claude Code skill. This is the Tier 2
 * companion to SMI-4408's tactical blocklist — the blocklist catches known
 * bad repos by exact match, this gate catches the long tail by shape.
 *
 * Design:
 *  - Multi-signal composite score (Option D in the SMI-4415 plan).
 *  - **Structural-signal floor** (plan-review H4): `shouldIngest` requires
 *    BOTH `hasStructuralSignal === true` AND `score >= threshold`. This
 *    closes the pure-metadata gaming hole where description (+2) + name
 *    regex (+2) alone could clear the threshold with zero structural proof.
 *  - Zero extra GitHub API calls — only reads fields already present on
 *    `ImportedSkill` (populated from the GitHub search response).
 *
 * Plan: docs/internal/implementation/smi-4415-indexer-signal-of-intent.md
 */
import type { ImportedSkill } from './types.js';
/**
 * Default signal-score threshold. Revisit against the Wave 0 evidence
 * before tuning; changes with a ≥20% `intent_admit_rate` delta against
 * the rolling baseline require plan-review.
 */
export declare const SIGNAL_THRESHOLD = 4;
/**
 * Owner-level trust list. Any repository whose `author` matches an entry
 * here is deemed to carry author-vouched intent, worth +5 (enough to clear
 * the default threshold on its own).
 *
 * TRUTH SOURCE: `supabase/functions/indexer/high-trust-authors.ts`
 * (distinct `.owner` values from the `HIGH_TRUST_AUTHORS` array).
 * Cross-boundary imports from `supabase/functions/` into `packages/core/`
 * are unsupported (the Edge Function pipeline compiles under Deno, not
 * Node), so the values are duplicated here and must be **manually synced**
 * when that file changes. The two files are the authoritative pair for
 * "trusted owner."
 *
 * Wave 0 R2 added `daymade` — `daymade/claude-code-skills` (901⭐ community
 * marketplace) has no topics and would otherwise fail the structural floor
 * despite legitimate intent. Author manually verified 2026-04-21.
 *
 * Matching: case-insensitive (done in `isHighTrustOwner`).
 */
export declare const HIGH_TRUST_OWNERS: ReadonlySet<string>;
export interface SignalScore {
    /** Sum of weights for every signal that fired. */
    score: number;
    /**
     * Human-readable labels for each fired signal — surfaced in import
     * stats (`rejected_for_intent_reasons`) for audit and debugging.
     */
    signals: string[];
    /**
     * True iff at least one structural signal fired. Required (in addition
     * to score >= threshold) by `shouldIngest` per plan-review H4.
     */
    hasStructuralSignal: boolean;
}
/**
 * Compute the signal-of-intent score for a single imported skill candidate.
 *
 * Reads only fields already present on `ImportedSkill` — zero additional
 * GitHub API calls. Designed to be cheap enough to run on every deduped
 * repo per import run.
 */
export declare function computeSignalScore(skill: ImportedSkill): SignalScore;
/**
 * Intent-gate decision for a single imported skill candidate.
 *
 * Requires BOTH:
 *  1. `hasStructuralSignal === true` — at least one structural signal
 *     (topic tag OR HIGH_TRUST_OWNERS membership) fired. This is the
 *     plan-review H4 floor.
 *  2. `score >= threshold` — the composite score clears the cutoff.
 *
 * Metadata-only matches (description + name + language + license + stars)
 * can contribute to the score but will fail on the floor regardless of
 * how high the sum reaches.
 *
 * @param skill - Deduped importer candidate.
 * @param threshold - Defaults to `SIGNAL_THRESHOLD` (4).
 */
export declare function shouldIngest(skill: ImportedSkill, threshold?: number): boolean;
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