Summary

• write user-initiated config edits to ~/.hermes/config.yaml even on first run
• keep reading project cli-config.yaml as the fallback baseline when user config is absent
• add a regression test covering the missing-user-config case from save_config_value() writes first-run user changes into repo cli-config.yaml #14714

Testing

• python3 -m pytest -o addopts= -q tests/cli/test_cli_save_config_value.py

Closes #14714