Fix Ruff E402 import-order errors in test module

[srichs]

Motivation

• Address Ruff E402 "module level import not at top of file" triggered by the project-root sys.path bootstrap in tests/test_spot_api.py while keeping the test import behavior unchanged.

Description

• Annotated the intentionally late imports in tests/test_spot_api.py with # noqa: E402 so the sys.path insertion is preserved and Ruff's import-order rule is satisfied.

Testing

• Ran ruff check . which passed and ran pytest -q which reported 119 passed.

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Codex Task