fix(agent-office): 일요 회고 견고화 (dead import 제거·send 가드·부분 payload 방어)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

agent-office/tests/test_sunday_review.py

@@ -21,3 +21,18 @@ def test_format_sunday_review_text():
     assert "1170" in txt
     assert "%" in txt        # percentile 표기
     assert "engine" in txt.lower() or "엔진" in txt
+
+
+def test_format_sunday_review_no_calibration():
+    payload = {"draw_no": 1171, "winner_analysis": None, "forward": []}
+    txt = tl.format_sunday_review(payload)
+    assert "1171" in txt
+    assert "%" not in txt  # no percentile section when calibration absent
+    assert "데이터 없음" in txt
+
+
+def test_format_sunday_review_missing_prizes_no_crash():
+    payload = {"draw_no": 1171, "winner_analysis": None,
+               "forward": [{"strategy": "engine_w", "label": "w1", "best_match": 3}]}  # no 'prizes'
+    txt = tl.format_sunday_review(payload)   # must NOT raise
+    assert "1171" in txt