feat: enhance Universal Illogics dictionary with engineering contradiction markers

src/trignum_core/subtractive_filter.py

@@ -129,6 +129,9 @@ class SubtractiveFilter:
             ("everywhere", "nowhere"),
             ("everything", "nothing"),
             ("must", "cannot"),
+            ("offline", "connection"),
+            ("unreachable", "connect"),
+            ("deleted", "update"),
         ]
 
         for pos, neg in contradiction_markers: