Add unique constraint on (model_id, timestamp, variable) in schema and implement idempotent export test to ensure no duplicates are created. Update CoreScouter and related tests to handle conflict resolution by ignoring duplicates.
Update pytest_asyncio fixture scopes in conftest.py for improved test isolation and add asyncio_default_fixture_loop_scope in pyproject.toml. Remove outdated scenarios from scenarios.md and delete unused test files for cleaner codebase.
Update pyproject.toml to enable automatic asyncio mode, modify pytest_asyncio fixture scopes in conftest.py for better isolation, and streamline e2e scenarios documentation in scenarios.md by removing outdated scenarios and reorganizing sections for clarity.
Update requirements-dev.txt to add E2E testing dependencies: fakeredis and mongomock for in-memory testing, and include testcontainers for PostgreSQL support.
