Allow security scan to fail without blocking deploy

Add security scanning with pip-audit and bandit

Fix tests: use local db instance per test, fix 404 handling

Fix CI: run DB tests sequentially, others in parallel

Fix CI: remove --shard flag (not available in pytest 7.4.3)

Add parallel test execution with pytest-xdist

Fix CI: use built-in pip cache in setup-python

remove default ci

Fix CI: remove conflicting dev dependencies from requirements.txt

Use requirements.txt for CI dependencies

Add pip cache to speed up CI

Fix CI: add pytest-asyncio==0.21.0 for compatibility

Fix CI: pin pytest version to 7.4.3 for compatibility

Add 20 useless slow tests for CI/CD demo

Add minimal build and test pipeline for GitVerse CI

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