test: Snowflake integration tests failing due to missing database configuration

[devin-ai-integration]

Issue Description

The Snowflake integration tests are failing in CI with the error:
Cannot perform CREATE SCHEMA. This session does not have a current database.

Technical Details

• Tests marked with @pytest.mark.requires_creds are failing specifically for Snowflake
• Other database tests (BigQuery, DuckDB, Postgres) are passing successfully
• Issue appears in matrix test jobs where credentials are available
• Error indicates missing default database configuration in test environment

Impact

• Affects all Snowflake-related tests in CI
• Does not affect other database integration tests
• Test failures first noticed during Poetry 2.0 migration (PR chore: update Poetry version to 2.0.1 in CI workflows #587)

Next Steps

1. Review Snowflake test configuration setup in CI environment
2. Verify default database and schema configuration
3. Update test environment configuration as needed

Related Information

• First identified in PR chore: update Poetry version to 2.0.1 in CI workflows #587
• Tests are properly marked with @pytest.mark.requires_creds
• Issue is specific to CI environment configuration, not code changes

[aaronsteers]

Resolved.