fix: resolve CI issues - add cd app command and fix F821 ruff warnings

app/src/git_commit_generator/ollama_client.py

@@ -38,9 +38,10 @@ class OllamaClient:
             True if model is available, False otherwise.
         """
         try:
-            response = ollama_lib.list()
+            list_result = ollama_lib.list()
+            models = list_result.get("models", [])
             return any(m["name"] == model or m["name"].startswith(model)
-                      for m in response.get("models", []))
+                      for m in models)
         except Exception:
             return False
 
@@ -109,8 +110,8 @@ class OllamaClient:
             List of available models with their details.
         """
         try:
-            response = ollama_lib.list()
+            list_result = ollama_lib.list()
-            return response.get("models", [])
+            return list_result.get("models", [])
         except Exception:
             return []