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TDD — ScoreCalculator (fórmulas §9)
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--- 1. assertividade() ---
[PASS] itensTotal=0 → null (sem dados)
[PASS] 100/100 → 100%
[PASS] 0/100 → 0%
[PASS] 95/100 → 95%
[PASS] 88/100 → 88%
[PASS] 1/3 → ~33.33%

--- 2. scoreSeparador() ---
[PASS] itens=0 → score=0
[PASS] itens=0 com assert=100 → score=0
[PASS] Perfil perfeito → score~100 (got 100)
[PASS] Assert=0, vel=ref, 200 itens → 60 (got 60)
[PASS] Separador lento (vel=2x ref) → ~80 (got 80)
[PASS] tempoRef=0 → compVel=0, score~60 (got 60)
[PASS] 10 itens → compVol=1.0, score~81 (got 81)
[PASS] assertividade=null tratada como 0 (got 50)

--- 3. scoreConferente() ---
[PASS] cargas=0 → score=0
[PASS] Conferente perfeito (0 erros, 0 retrab) → 100 (got 100)
[PASS] Todos erros, 0 retrab → score=40 (got 40)
[PASS] 0 erros, retrabalho=100% → score=60 (got 60)
[PASS] 5 erros em 10 cargas, retrab=20% → score=62 (got 62)
[PASS] erros > cargas: taxaErro clampeia a 1, score=40 (got 40)

--- 4. semaforoScore() ---
[PASS] score=100 → success
[PASS] score=70 (limiar) → success
[PASS] score=69.9 → warning
[PASS] score=45 (limiar) → warning
[PASS] score=44.9 → danger
[PASS] score=0 → danger

--- 5. semaforoAssertividade() ---
[PASS] assert=100 → success
[PASS] assert=95 (limiar) → success
[PASS] assert=94.9 → warning
[PASS] assert=88 (limiar) → warning
[PASS] assert=87.9 → danger
[PASS] assert=0 → danger

--- 6. semaforoRetrabalho() ---
[PASS] retrab=0% → acerto=100 → success
[PASS] retrab=5% → acerto=95 (limiar) → success
[PASS] retrab=5.1% → acerto=94.9 → warning
[PASS] retrab=15% → acerto=85 (limiar) → warning
[PASS] retrab=15.1% → acerto=84.9 → danger
[PASS] retrab=100% → danger

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RESULTADO: PASS=38  FAIL=0
TODOS OS TESTES PASSARAM