Add Behave BDD scenarios (tagged @tdd_bug @tdd_bug_1024 @tdd_expected_fail)
that verify the default database_url resolves inside CLEVERAGENTS_HOME rather
than the current working directory. Two scenarios exercise both the container
get_database_url() helper and the Settings model default.
Add Robot Framework integration tests with a helper script exercising the same
resolution paths via subprocess, verifying database URL resolution and CLI
database file placement relative to CLEVERAGENTS_HOME.
The tests currently fail as expected because the bug in #1024 is still present:
the relative SQLite path sqlite:///cleveragents.db resolves against CWD. The
@tdd_expected_fail tag inverts the result so CI passes.
ISSUES CLOSED: #1034
freemo