feat(v2): T8 人工检验队列 ReviewQueue（sqlite/抽样/审核）

tests/test_review.py

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+"""T8 人工检验队列单测（封闭：临时 sqlite）。"""
+import pytest
+
+from router_system.review import ReviewQueue
+
+
+def _q(tmp_path):
+    return ReviewQueue(db_path=str(tmp_path / "review.sqlite3"))
+
+
+def test_enqueue_and_get(tmp_path):
+    q = _q(tmp_path)
+    rid = q.enqueue("req1", "问", "答", tags=["code"], reason="sample")
+    assert rid == 1
+    row = q.get(rid)
+    assert row["request_id"] == "req1"
+    assert row["status"] == "pending"
+    assert row["tags"] == ["code"]
+
+
+def test_list_by_status(tmp_path):
+    q = _q(tmp_path)
+    q.enqueue("r1", "q", "a", tags=["code"])
+    q.enqueue("r2", "q", "a", tags=["safety"])
+    assert q.count() == 2
+    assert q.count(status="pending") == 2
+    q.submit(1, "approve")
+    assert q.count(status="pending") == 1
+    pending = q.list(status="pending")
+    assert len(pending) == 1
+    assert pending[0]["request_id"] == "r2"
+
+
+def test_submit_verdicts(tmp_path):
+    q = _q(tmp_path)
+    rid = q.enqueue("r1", "q", "a")
+    assert q.submit(rid, "edit", correction="修正文本") is True
+    row = q.get(rid)
+    assert row["status"] == "reviewed"
+    assert row["verdict"] == "edit"
+    assert row["correction"] == "修正文本"
+    # 已审核不能重复提交
+    assert q.submit(rid, "approve") is False
+
+
+def test_submit_invalid_verdict(tmp_path):
+    q = _q(tmp_path)
+    rid = q.enqueue("r1", "q", "a")
+    with pytest.raises(ValueError):
+        q.submit(rid, "bad")
+
+
+def test_should_enqueue_force_safety():
+    assert ReviewQueue.should_enqueue(["safety"], sample_rate=0.0,
+                                      force_tags=["safety"]) is True
+    assert ReviewQueue.should_enqueue(["code"], sample_rate=0.0,
+                                      force_tags=["safety"]) is False
+
+
+def test_should_enqueue_sample_rate():
+    import random
+    # 固定随机种子下按 10% 抽样应命中/不命中可控
+    rng = random.Random(42)
+    hit = sum(ReviewQueue.should_enqueue(["code"], sample_rate=0.0, force_tags=[], rng=rng) for _ in range(1000))
+    assert hit == 0  # sample_rate=0 -> 永不抽样
+    rng = random.Random(1)
+    hit = sum(ReviewQueue.should_enqueue(["code"], sample_rate=1.0, force_tags=[], rng=rng) for _ in range(10))
+    assert hit == 10  # sample_rate=1 -> 全抽样
+
+
+def test_db_recreated(tmp_path):
+    q1 = _q(tmp_path)
+    q1.enqueue("r1", "q", "a")
+    # 重新打开同一 db，数据仍在
+    q2 = ReviewQueue(db_path=str(tmp_path / "review.sqlite3"))
+    assert q2.count() == 1