File skill-learning-phase1.test.ts

test/skill-learning-phase1.test.ts:None–None

import { describe, it, expect } from 'vitest';
import { scoreConfidence, confidenceLabel } from '../src/skills/learning/confidence.js';
import { aggregateStats, type LearningEvent } from '../src/skills/learning/ledger.js';
import { buildCandidateSkill } from '../src/skills/learning/capture.js';