Document GitHub model artifact push policy

AGENTS.md

@@ -26,6 +26,25 @@
   - `github` => `https://github.com/FoodDesert/Prompt_Squirrel_RAG.git`
   - `origin` => `https://huggingface.co/spaces/FoodDesert/Prompt_Squirrel_RAG`
 - For code collaboration, prefer explicit GitHub remote commands to avoid pushing code to Hugging Face remote.
+- Do **not** push model/checkpoint artifacts to GitHub. GitHub is for code, docs,
+  tests, and lightweight config only; model files belong on the Hugging Face
+  remote (`origin`) or local disk.
+- Before any `git push github ...`, inspect pending commits with:
+  - `git log --oneline github/main..HEAD`
+  - `git diff --stat github/main..HEAD`
+  - `git diff --name-only github/main..HEAD`
+- If pending commits touch model/checkpoint paths or large ML artifacts, stop and
+  create a code-only GitHub path instead of pushing them. Treat these paths as
+  blocked for GitHub pushes:
+  - `models/`
+  - `*.safetensors`
+  - `*.bin`
+  - `*.pt`
+  - `*.pth`
+  - `*.onnx`
+  - tokenizer/checkpoint bundles under `models/finetune/`
+- If deployment to Hugging Face needs model artifacts, push those only to
+  `origin`, never to `github`.
 
 ## Mandatory agent bootstrap for any new workspace
 - Always run these first, in order: