Adopt Argent-1D silver nugget mascot

README.md

@@ -50,7 +50,7 @@ Silver outputs `P(up) - 0.5`; positive values indicate an upward directional sco
 - `config.json`: data, feature, split and transaction-cost configuration.
 - `metrics.json`: validation, locked-test, foundation-model and robustness results.
 
-The payload contains no raw Yahoo Finance/FRED data, Hugging Face token or intermediate checkpoint. The estimator was fitted with code revision `64beab3`.
+The payload contains no raw Yahoo Finance/FRED data, Hugging Face token or intermediate checkpoint. The estimator was fitted with code revision `d5f5f5f`.
 
 ## Evaluation under the repository protocol
 

metrics.json

@@ -250,5 +250,5 @@
       "btc": "BTC-USD"
     }
   },
-  "source_code_revision": "64beab3"
+  "source_code_revision": "d5f5f5f"
 }