test(lotto-signals): floating-point 임계치 보정 + import 정리 + decide_fire 분리

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

agent-office/tests/test_lotto_signals.py

@@ -1,5 +1,4 @@
 # agent-office/tests/test_lotto_signals.py
-import math
 import pytest
 
 from app.curator import signals
@@ -79,7 +78,7 @@ def test_adaptive_baseline_normal_window_full():
         window=[1.0, 1.1, 0.9, 1.0, 1.0, 1.1, 0.9, 1.0],
         window_max=8,
     )
-    z, fire = bl.evaluate(value=1.20, z_normal=1.5, z_urgent=2.5)
+    z, fire = bl.evaluate(value=1.12, z_normal=1.5, z_urgent=2.5)
     assert fire == "normal"
     assert z is not None and z >= 1.5
 
@@ -101,8 +100,7 @@ def test_adaptive_baseline_push_updates_window():
     assert bl.window == [2, 3, 4, 5, 6, 7, 8, 9.0]
 
 
-def test_decide_fire_level_combination():
-    """2개 이상 normal 발화 → urgent."""
+def test_decide_fire_level_two_normals_escalate():
     sigs = [
         {"metric": "sim", "z": 1.6, "fire": "normal"},
         {"metric": "drift", "z": 1.7, "fire": "normal"},
@@ -110,17 +108,23 @@ def test_decide_fire_level_combination():
     ]
     assert signals.decide_overall_fire(sigs) == "urgent"
 
-    sigs2 = [
+
+def test_decide_fire_level_single_normal():
+    sigs = [
         {"metric": "sim", "z": 1.6, "fire": "normal"},
         {"metric": "drift", "z": 0.3, "fire": "noop"},
     ]
-    assert signals.decide_overall_fire(sigs2) == "normal"
+    assert signals.decide_overall_fire(sigs) == "normal"
 
-    sigs3 = [
+
+def test_decide_fire_level_single_urgent():
+    sigs = [
         {"metric": "sim", "z": 3.0, "fire": "urgent"},
         {"metric": "drift", "z": 0.2, "fire": "noop"},
     ]
-    assert signals.decide_overall_fire(sigs3) == "urgent"
+    assert signals.decide_overall_fire(sigs) == "urgent"
 
-    sigs4 = [{"metric": "sim", "z": 0.5, "fire": "noop"}]
-    assert signals.decide_overall_fire(sigs4) == "noop"
+
+def test_decide_fire_level_all_noop():
+    sigs = [{"metric": "sim", "z": 0.5, "fire": "noop"}]
+    assert signals.decide_overall_fire(sigs) == "noop"