fix: refactor for lightweight ci tests to resolve exit code 2

Author: whitebeard10

.github/workflows/ci.yml

@@ -27,11 +27,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest httpx fastapi pydantic-settings pandas scikit-learn datasets transformers peft bitsandbytes torch --extra-index-url https://download.pytorch.org/whl/cpu
-        
-    - name: Dependency check
-      run: |
-        python -c "import torch; import transformers; import peft; print('ML dependencies loaded')"
+        pip install pytest httpx fastapi pydantic-settings pandas scikit-learn
         
     - name: Run tests
       run: |