🛡️ Added Guardian agent (memory integrity auditor)

agents/guardian.py

@@ -0,0 +1,39 @@
+# agents/guardian.py
+
+"""
+Lucidia Guardian – Integrity Agent
+Verifies truth state, author identity, and protects memory from tampering
+"""
+
+from hashlib import sha256
+from pathlib import Path
+import os
+import time
+
+class Guardian:
+    def __init__(self, memory_dir="memory"):
+        self.memory_dir = Path(memory_dir)
+        self.memory_dir.mkdir(exist_ok=True)
+
+    def verify_integrity(self):
+        report = []
+        for file in self.memory_dir.glob("*.txt"):
+            content = file.read_text()
+            current_hash = sha256(content.encode()).hexdigest()
+            expected = file.stem.split("_")[0]
+            if current_hash.startswith(expected):
+                report.append((file.name, "✅ valid"))
+            else:
+                report.append((file.name, "⚠️ corrupted"))
+        return report
+
+    def display_audit(self):
+        result = self.verify_integrity()
+        for filename, status in result:
+            print(f"{filename}: {status}")
+
+if __name__ == "__main__":
+    print("🛡️ Guardian Agent Online")
+    guardian = Guardian()
+    guardian.display_audit()
+