change: import regex directly from proxy model

tests/test_time.py

@@ -1,7 +1,7 @@
 import re
 
-day = r"([0][7-9]|[1][0-6])"
-night = r"([0][0-6]|[1][7-9]|[2][0-3])"
+from dzgui.model.proxy_model import DAY_REG, NIGHT_REG
+
 
 def iterate(h: str, r: str) -> None:
     for m in range(60):
@@ -13,11 +13,11 @@ def test_day() -> None:
     for h in range(17):
         if h < 7:
             continue
-        iterate(h, day)
+        iterate(h, DAY_REG)
 
 
 def test_night() -> None:
     for h in range(24):
         if 6 < h < 17:
             continue
-        iterate(h, night)
+        iterate(h, NIGHT_REG)