/**
 * Forgen Meta-Learning — Session Quality Scorer (Feature 1)
 *
 * Joins existing data sources to compute a per-session quality score.
 * This score feeds other meta-learning features (matcher tuning, thresholds).
 *
 * Data sources:
 *   - injection-cache-{sessionId}.json → injected solutions
 *   - modified-files-{sessionId}.json  → drift state
 *   - implicit-feedback.jsonl          → revert/drift events
 *   - me/behavior/*.json              → correction evidence
 *   - state/sessions/{sessionId}.json  → session metadata
 */
import type { SessionQualityScore } from './types.js';
import { type ImplicitFeedbackEntry } from '../../store/implicit-feedback-store.js';
interface InjectionCacheData {
    injected: string[];
    totalInjectedChars: number;
    updatedAt: string;
    /** Tag snapshot per solution (backfill feature) */
    tags?: Record<string, string[]>;
}
interface DriftState {
    sessionId: string;
    totalEdits: number;
    totalReverts: number;
    ewmaEditRate: number;
    ewmaRevertRate: number;
    lastWarningAt: number | null;
    lastCriticalAt: number | null;
    hardCapReached: boolean;
}
export declare function loadInjectionCache(sessionId: string): InjectionCacheData | null;
export declare function loadDriftState(sessionId: string): DriftState | null;
export declare function loadImplicitFeedback(sessionId: string): ImplicitFeedbackEntry[];
export declare function loadSessionCorrections(sessionId: string): number;
/**
 * Compute overall session quality score (0-100, higher = better).
 *
 * Formula:
 *   100
 *   - (correctionRate × 15)        // each correction/prompt penalizes 15pts
 *   - (driftScore × 0.3)           // drift 0-100 maps to 0-30 penalty
 *   - (revertCount × 5)            // each revert penalizes 5pts
 *   + (solutionEffectiveness × 20) // good solution usage boosts 0-20pts
 */
export declare function computeOverallScore(correctionRate: number, driftScore: number, revertCount: number, solutionEffectiveness: number): number;
/**
 * Score a session's quality by joining all available data sources.
 * Returns null if insufficient data (no session state found).
 */
export declare function scoreSession(sessionId: string): SessionQualityScore | null;
export declare function saveSessionQuality(score: SessionQualityScore, baseDir?: string): void;
export declare function loadSessionQuality(sessionId: string, baseDir?: string): SessionQualityScore | null;
export declare function loadRecentQualityScores(limit?: number, baseDir?: string): SessionQualityScore[];
export {};