Add TDD regression tests for bug #570 where `_get_session_service()`
calls `container.db()` but the DI `Container` class has no `db`
provider, raising `AttributeError`. Same root cause as bug #554.
Includes 4 Behave BDD scenarios tagged `@tdd_bug @tdd_bug_570
@tdd_expected_fail`, Robot Framework integration smoke tests with
`--format plain`, and ASV service-layer benchmarks. Tests exercise the
real DI path by resetting `_service = None` and using a file-based
SQLite database.
Implements the `@tdd_expected_fail` inversion infrastructure:
- Behave: `after_scenario` hook in `features/environment.py` inverts
pass/fail for scenarios tagged `@tdd_expected_fail`
- Robot: `robot/tdd_expected_fail_listener.py` listener (API v3)
performs the same inversion for Robot test cases
- `noxfile.py`: registers the listener via `--listener` in both the
`integration_tests` and `slow_integration_tests` sessions
Migrates 18 existing TDD scenarios across 5 feature files from the old
`@tdd @bugNNN` convention to the standardised `@tdd_bug @tdd_bug_NNN`
tags per CONTRIBUTING.md § TDD Bug Test Tags.
Refs: #570
Brent E. Edwards