airbyte-cdk connector test: --no-creds crashes when combined with --pytest-arg (tuple has no extend)

[bazarnov]

Symptom

airbyte-cdk connector test . --no-creds --pytest-arg="-k invalid_config"
AttributeError: 'tuple' object has no attribute 'extend'

Root cause

airbyte_cdk/cli/airbyte_cdk/_connector.py (main, lines 151-156): --pytest-arg is a multiple=True click option, so pytest_args arrives as a tuple. pytest_args = pytest_args or [] keeps the tuple whenever at least one --pytest-arg is given, and --no-creds then calls pytest_args.extend(["-m", "not requires_creds"]) on it. Same code in the released 7.23.6.

Reproduction

Any connector directory, e.g. airbyte-integrations/connectors/source-monday in airbytehq/airbyte:

airbyte-cdk connector test . --no-creds --pytest-arg="-k invalid_config"

Without --pytest-arg the command works; without --no-creds it works.

Impact

The two options cannot be combined, so a scoped no-creds run (one scenario or one test) is impossible from the CLI.

Fix

pytest_args = list(pytest_args or []).

Workaround

--pytest-arg="-m" --pytest-arg="not requires_creds" instead of --no-creds.

Precedent

Found while reviewing airbytehq/airbyte#85170 (source-monday). Requested by Baz (@bazarnov).