Per review:
- Hoist `import httpx` out of the two test function bodies and into
the module imports at the top of
test_astrolabe_chunk_context.py.
- Simplify the regression guard in
test_management_chunk_context_endpoint.py to use
`mock.assert_awaited_once_with(...)` instead of manually unpacking
call_args. This is stricter — it fails loudly on signature change —
and matches the canonical pattern for asserting mock calls.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
