Lists multiple specific concrete actions and outcomes: prescribes one Space per deployment boundary (environment × region × cluster), the `platform` Space for org-wide Triggers/Filters, and label/slug conventions for cross-Space queries and cloning. Very concrete and actionable.

Clearly answers both 'what' (prescribes Space-per-deployment-boundary pattern, platform Space, label/slug conventions) and 'when' (explicit 'Use when' clause with detailed trigger phrases). Also includes explicit 'Do not load for' guidance with alternative skill references, which further strengthens completeness.

Excellent coverage of natural phrases users would say: 'how should I structure my Spaces?', 'where do dev/staging/prod go?', 'multi-region layout', 'one Space per environment?', naming conventions, 'how do I keep prod config separate from dev?', 'standing up a second cluster'. These are realistic user queries.

Highly distinctive with clear niche around Space organization and multi-environment layout in ConfigHub. The explicit 'Do not load for' section with references to `config-as-data`, `target-bind`, and `triggers-and-applygates` actively prevents conflicts with related skills.

The skill is thorough and mostly earns its length given the complexity of the topic, but some sections are verbose — e.g., the 'Why separate the home Space from deployment Spaces' rationale paragraph and the extended explanation of why suffix naming breaks things could be tightened. The corollary explanation under 'The principle' is somewhat repetitive with the anti-patterns section.

Provides concrete, executable CLI commands throughout — `cub space create`, `cub space update --label`, `cub unit create --dest-space`, cross-Space queries with `--where`. The canonical layout diagram, naming conventions, label examples, and promotion flow commands are all copy-paste ready and specific.

The skill clearly sequences the workflow: preflight checks (token validation, permissions, identify what's changing), then Space creation with labels, then promotion flow with explicit commands. The verify chain provides explicit validation steps (`cub space list`, `cub space get -o json`, cross-Space query verification). Stop conditions and tool boundaries are clearly defined.

The skill references companion skills (`triggers-and-applygates`, `target-bind`, `config-as-data`, etc.) and external docs clearly, which is good. However, the content itself is a long monolithic document (~200 lines) that could benefit from splitting detailed sections (e.g., Worker patterns, promotion flow, anti-patterns) into separate reference files. No bundle files are provided to support progressive disclosure.