fix: resolve type checking and linting issues

instructor/cli/deprecated_hub.py

@@ -1,10 +1,8 @@
-from typing import Any
-import typer
-from typer import Typer, Exit, echo
+from typer import Exit, echo, Typer
 
-app: Typer = typer.Typer()
+app: Typer = Typer(help="Instructor Hub CLI (Deprecated)")
 
-@app.command()
+@app.command(name="hub")
 def hub() -> None:
     """
     This command has been deprecated. The instructor hub is no longer available.

tests/llm/test_openai/docs/test_hub.py

@@ -1,11 +1,10 @@
 import pytest
-from pytest_examples import find_examples, CodeExample, EvalExample
-
+from pytest_examples import CodeExample, EvalExample
 
 @pytest.mark.skip(reason="Hub functionality is being removed")
-def test_format_blog(example: CodeExample, eval_example: EvalExample):
+def test_format_blog(example: CodeExample, eval_example: EvalExample) -> None:
     """This test is being skipped as the hub functionality is being removed."""
-    excluded_sources = [
+    excluded_sources: list[str] = [
         "mistral",
         "ollama",
         "llama_cpp",

tests/test_deprecated_hub.py

@@ -1,13 +1,12 @@
-from typing import Any
+from typing import Any, cast
 from typer.testing import CliRunner, Result
 from instructor.cli.deprecated_hub import app
-from typer import Typer
 
 runner: CliRunner = CliRunner()
 
 def test_deprecated_hub_command() -> None:
     """Test that the hub command returns a deprecation message and exits with code 1"""
-    result: Result[Any] = runner.invoke(app)
+    result = cast(Result[Any], runner.invoke(app))
     assert result.exit_code == 1
     assert "instructor hub has been deprecated" in result.stdout
     assert "https://python.useinstructor.com/examples/" in result.stdout