[andystaples]

Summary

• Extract timestamp-delimited host log records when adjacent records share a physical line. Keep the existing exact host-prefix/message assertion and category-filter coverage unchanged.
• Give each sample Functions host its own task hub instead of sharing one hub across the Nox session. In the captured rewind failure, dtask_style consumed v1_style's rewind_target before fail_once ran; the accepted rewind was then followed by the activity's first real failure.
• Add host-free regression coverage for log framing and task-hub isolation. Require the rewind test's initial failure to contain the deliberate activity error, rather than accepting any failed state.

These changes are confined to E2E infrastructure and tests; no SDK behavior, retry policy, or timeouts change.

Fixes #330.
Fixes #331.

[Copilot]

🟢 Approval recommended

No active review issues were identified for the test-infrastructure changes targeting host-log parsing and task-hub isolation.

No open issues 🎉

What changed in this PR

This PR addresses Azure Functions E2E flakes from adjacent host log records and sample hosts sharing a task hub. Changes are limited to test infrastructure and coverage; SDK behavior, retry policies, and timeouts remain unchanged.

Changes:

• Extract timestamp-delimited host log records while preserving exact message assertions and category-filter coverage.
• Assign each sample host its own task hub instead of sharing one across the Nox session.
• Add host-free regression tests and require the rewind test’s initial failure to contain the deliberate activity error.

File	Description
tests/​azure-functions-durable/​e2e/​test_v1_client_e2e.py	Verify the expected initial rewind failure and correct the module docstring.
tests/​azure-functions-durable/​e2e/​test_host_log_records.py	Cover adjacent log records and preservation of nonmatching output.
tests/​azure-functions-durable/​e2e/​test_host_isolation.py	Verify unique, stable task hubs without modifying the parent environment.
tests/​azure-functions-durable/​e2e/​_harness.py	Add per-host task hubs and timestamp-based log record extraction.
noxfile.py	Remove the session-wide shared task hub setting.

_{Review effort: Balanced}