Lists multiple specific concrete actions: read Unit status + latest event, classify apply states (Progressing/Completed/Failed/Aborted), drill into per-resource sync/ready status, cross-check controller and cluster for runtime failures (ImagePullBackOff, CrashLoopBackOff, schema errors), produce three-way agreement table, surface Revision history with change-desc and GUI review links.

Clearly answers both 'what' (classify apply status, drill into per-resource sync, cross-check controller/cluster, produce agreement table, surface revision history) and 'when' (right after cub-apply returns, or when user asks specific trigger questions). Also explicitly states when NOT to use it with three exclusion cases, which further strengthens the 'when' guidance.

Excellent coverage of natural trigger phrases users would actually say: 'did it actually deploy?', 'is it live?', 'is it still applying?', 'did argo pick it up?', 'are ConfigHub and the cluster in sync?', 'prove this converged', 'close this release out', 'show me what changed'. Also includes technical terms like ImagePullBackOff, CrashLoopBackOff, Argo, Flux, kubectl.

Highly distinctive with explicit negative boundaries ('Do not load for pure ConfigHub-internal query (use cub-query), for reconciling known drift (use drift-reconcile), or when the apply has not actually run yet (use cub-apply)'). The post-apply verification niche is clearly carved out and unlikely to conflict with other skills.

The skill is thorough and mostly earns its length given the complexity of the multi-step verification workflow, but there's some redundancy (e.g., the 'What this answers' section partially restates the 'When to use' section, and the Evidence section largely repeats commands already shown). The taxonomy table and status values are valuable additions, though some explanatory prose could be tightened.

Excellent actionability throughout — every step includes exact CLI commands with flags, specific jq selectors, concrete kubectl/argocd/flux commands, and clear branching logic. The status taxonomy table maps exact field values to meanings, and error patterns name specific error strings with remediation routes.

The five-step loop is clearly sequenced with explicit branching (Completed → step 4/5, Progressing → step 2, Failed → step 3, Aborted → surface and ask). Validation checkpoints are built in: preflight gates before starting, three-way agreement table as a verification step, close-out preflight that blocks if any Unit is still non-terminal. Stop conditions and tool boundaries are explicit, preventing destructive actions.

The skill references several companion files (references/cub-cli.md, references/filters-and-queries.md, references/revisions.md) and companion skills, which is good structure. However, no bundle files were provided to verify these exist, and the skill itself is quite long (~200+ lines) with the full three-way agreement table and detailed taxonomy inline rather than in a reference file. The inline detail is arguably justified by the workflow nature, but the agreement table and status taxonomy could be split out.