fix: produce card for local models with existing readme (#157)

src/heretic/main.py

@@ -823,11 +823,23 @@ def run():
                                     token=token,
                                 )
 
-                            # If the model path doesn't exist locally, it can be assumed
-                            # to be a model hosted on the Hugging Face Hub, in which case
+                            # If the model path exists locally and includes the
+                            # card, use it directly. If the model path doesn't
+                            # exist locally, it can be assumed to be a model
+                            # hosted on the Hugging Face Hub, in which case
                             # we can retrieve the model card.
-                            if not Path(settings.model).exists():
+                            model_path = Path(settings.model)
+                            if model_path.exists():
+                                card_path = (
+                                    model_path / huggingface_hub.constants.REPOCARD_NAME
+                                )
+                                if card_path.exists():
+                                    card = ModelCard.load(card_path)
+                                else:
+                                    card = None
+                            else:
                                 card = ModelCard.load(settings.model)
+                            if card is not None:
                                 if card.data is None:
                                     card.data = ModelCardData()
                                 if card.data.tags is None:

src/heretic/utils.py

@@ -271,6 +271,10 @@ def get_readme_intro(
     base_refusals: int,
     bad_prompts: list[Prompt],
 ) -> str:
+    if Path(settings.model).exists():
+        # Hide the path, which may contain private information.
+        model_link = "a model"
+    else:
         model_link = f"[{settings.model}](https://huggingface.co/{settings.model})"
 
     return f"""# This is a decensored version of {