Simplify Client setup.

charla/chat.py

@@ -75,17 +75,14 @@ def run(argv: argparse.Namespace) -> None:
     # Prompt used to give directions to the model at the beginning of the chat.
     system_prompt = argv.system_prompt.read() if argv.system_prompt else ''
 
-    # Determine client class and import corresponding module.
-    client_cls: Any = None
+    # Determine which Client class to import.
     if argv.provider == 'ollama':
-        from charla.client.ollama import OllamaClient
-        client_cls = OllamaClient
+        from charla.client.ollama import OllamaClient as ApiClient
     elif argv.provider == 'github':
-        from charla.client.github import AzureClient
-        client_cls = AzureClient
+        from charla.client.github import AzureClient as ApiClient
 
     # Start model API client before chat REPL in case of model errors.
-    client = client_cls(argv.model, system=system_prompt, message_limit=argv.message_limit)
+    client = ApiClient(argv.model, system=system_prompt, message_limit=argv.message_limit)
     client.set_info()
 
     # Prompt history used for auto completion.