Use when adding a new `verdi` subcommand in `src/aiida/cmdline/`.
Use when adding a new third-party dependency to aiida-core's `pyproject.toml`.
Use when exploring the aiida-core codebase structure, looking for key files, or understanding how packages relate to each other.
Use when making commits, creating branches, or preparing pull requests for aiida-core.
Use when diagnosing failed, stuck, or misbehaving AiiDA processes or the daemon.
Use when deprecating a public Python API or `verdi` CLI command in aiida-core.
Use when running pre-commit, linting, type checking, or fixing CI failures in aiida-core.
Use when running pytest, checking test results, or understanding test infrastructure in aiida-core.