Select qualifier divisions by topology

[KyleHerndon]

Summary

• select qualifier divisions by active topology (type: staging) instead of requiring the backend-seeded Qualifiers name
• keep legacy qualifiers_division_name as a preference when it matches, but fall back to the lowest staging division when stale or absent
• remove the bundled ruleset configs' hardcoded Qualifiers match so ruleset graduation uses the supplied division IDs and type/level topology
• add regression coverage for renamed qualifier divisions in both baseline and ruleset commissioners

Paired Metta receiver PR: https://github.com/Metta-AI/metta/pull/15922

Validation

• uv run pytest tests/test_commissioner_strategies.py -q: 63 passed
• /home/kyleherndon/metta/.venv/bin/ruff check commissioners/common/utils.py tests/test_commissioner_strategies.py: passed

[KyleHerndon]

Closing this stopgap topology-selection PR. Superseding with a commissioner migration flow: Metta will derive a commissioner runtime fingerprint, request desired divisions from the commissioner, let the commissioner emit membership events for migration, then archive divisions outside the desired set.