Initial commit: add .gitignore and README

fusionagi/verification/contradiction.py

@@ -0,0 +1,21 @@
+from typing import Any, Protocol
+
+class SemanticLike(Protocol):
+    def query(self, domain, limit): ...
+
+class ContradictionDetector:
+    def __init__(self, semantic=None):
+        self._semantic = semantic
+    def check(self, claim, context=None):
+        out = []
+        if not claim or not claim.strip():
+            return out
+        ctx = context or {}
+        domain = ctx.get("domain", "")
+        if self._semantic:
+            facts = self._semantic.query(domain or None, 50)
+            for f in facts:
+                st = f.get("statement", "")
+                if st and "not " in claim.lower() and st.lower() in claim.lower():
+                    out.append("Contradicts: " + st[:100])
+        return out