Move the large embedded `_BEHAVE_PARALLEL_CLI_SOURCE` string constant out of
noxfile.py and into a standalone `scripts/run_behave_parallel.py` module.
The `_install_behave_parallel()` helper now reads the script from disk via
`Path(__file__).parent / 'scripts' / 'run_behave_parallel.py'` instead of
embedding the source as a raw string literal. This allows ruff to lint and
type-check the runner independently, and makes noxfile.py significantly
shorter and easier to read.
No functional changes: the installed `behave-parallel` entry point is
identical to the previous embedded version. Parallel and sequential modes,
coverage integration, and the multiprocessing fork model are all preserved.
Fixed two SIM105 lint violations in the extracted script (replaced
try/except/pass with contextlib.suppress).
ISSUES CLOSED: #1538
Created scripts/create_template_db.py that builds a pre-migrated SQLite
template database using Base.metadata.create_all() + alembic stamp
(~5ms for 34 tables, vs ~0.5-3s x 25 Alembic migrations per scenario).
Nox unit_tests and coverage_report sessions generate the template before
test execution and propagate CLEVERAGENTS_TEMPLATE_DB env var to all
workers.
features/environment.py before_all() installs a monkey-patch on
MigrationRunner.init_or_upgrade that copies the template for fresh
scenario temp DBs, falling through to real migrations for :memory:,
existing files, and migration-runner unit tests.
Quick wins: sleep(0.5) -> sleep(0.05) in cli_streaming wait step;
removed redundant Background re-declaration in cli_streaming.feature
scenario 7.
ISSUES CLOSED: #483