fix: resolve CI/CD issues - remove unused variables and add type stubs

tests/test_cli.py

@@ -4,8 +4,7 @@ import pytest
 from unittest.mock import Mock, patch
 from click.testing import CliRunner
 
-from src.cli.commands import cli, index_command, search_command, list_command
-from src.cli.interactive import run_interactive
+from src.cli.commands import cli
 
 
 class TestCLIBasics:
@@ -237,6 +236,6 @@ class TestInteractiveCommand:
         with patch("src.cli.interactive.run_interactive") as mock_run:
             mock_run.side_effect = (KeyboardInterrupt, SystemExit(0))
 
-            result = runner.invoke(cli, ["interactive"])
+            runner.invoke(cli, ["interactive"])
 
             mock_run.assert_called_once()