The skill is fairly long (~250 lines) but most content is necessary for a complex multi-step, multi-source workflow. However, there's some verbosity: the IaC tool destroy command table includes many tools that could be referenced externally, the /loop section repeats the 'never auto-destroy' point multiple times, and some explanatory text could be tightened (e.g., 'The TTL registry is a fallback for environments without issue tracking or for resources created outside the normal deployment flow').

The skill provides concrete, executable commands throughout: specific `gh issue list` commands with exact flags, `tofu destroy -target=` patterns with var-file paths, `gh issue close` commands, and clear table formats for the TTL registry. Commands are copy-paste ready and tool-specific variations are enumerated.

The 7-step workflow is clearly sequenced with explicit validation checkpoints: confirmation before any destruction (Step 3), error handling for partial failures, state lock detection, and a feedback loop for failed destroys (retry or skip). The 'NEVER auto-destroy' constraint is prominently stated. The error handling section is comprehensive with specific recovery actions for each failure mode.

The skill references external files (experience-derivation.md, rollback-patterns.md, providers.md, environments.md) appropriately, but the main SKILL.md itself is quite long with inline content that could be split out — particularly the IaC destroy command table (12 tools) and the detailed error handling section. No bundle files are provided to verify referenced paths, and the large inline tables make the skill harder to scan.

The description focuses almost entirely on trigger phrases and barely describes concrete actions. The only actions vaguely mentioned are 'destroy expired resources' and 'check ttl' embedded within trigger terms, but there's no structured list of specific capabilities like 'scans Terraform state for expired TTL tags, destroys ephemeral environments, generates cleanup reports'.

The 'when' is extremely well-covered with the exhaustive trigger list, but the 'what' is weak — it only vaguely mentions 'check for and destroy expired ephemeral infrastructure resources' and 'TTL enforcement' without explaining what the skill actually does in concrete terms (e.g., which cloud providers, what resource types, what cleanup process).

The description provides extensive coverage of natural trigger terms users would say, including many variations like 'cleanup', 'infra cleanup', 'tear down', 'teardown infra', 'prune resources', 'decommission', 'destroy dev environment', etc. This is thorough and covers common phrasings.

The skill occupies a very clear niche — ephemeral infrastructure TTL cleanup and resource destruction. The trigger terms are highly specific to this domain (ARN, TTL, infra cleanup, ephemeral resources) and unlikely to conflict with other skills.