Fix: Lower default similarity_threshold to 0.10 for hash embeddings

mnemo.py

@@ -299,8 +299,8 @@ class SelfTuner:
     
     def __init__(self):
         self.parameters = {
-            "similarity_threshold": 0.50,  # ADJUSTED from SLM 0.65
-            "quality_threshold": 0.50,     # ADJUSTED from SLM 0.30
+            "similarity_threshold": 0.10,  # ADJUSTED from SLM 0.65
+            "quality_threshold": 0.35,     # ADJUSTED from SLM 0.30
             "promotion_threshold": 0.55,   # ADJUSTED from SLM 0.65
             "demotion_threshold": 0.70,    # ADJUSTED from SLM 0.75
         }