Improve Skill

Entry condition check

Before proceeding, verify:

1. PR is merged (not draft, not open)
2. DoD artefact exists at artefacts/[feature]/dod/[story-slug]-dod.md
3. Story artefact exists at artefacts/[feature]/stories/[story-slug].md

If not met:

❌ Entry condition not met /improve requires a merged PR and a completed /definition-of-done artefact.

Missing: [specific item]

Run /definition-of-done first, then return here.