Harvest: argument-hint frontmatter on Claude slash commands

[jbaruch]

Status: Tier 2

Upstream spec-kit added argument-hint: to Claude slash-command frontmatter so the UI shows expected args inline (commit 10be4848, PRs #2059, #1951).

What we'd build

Add argument-hint: field to the frontmatter of skills that accept arguments — primarily:

• /iikit-core <action> [feature] (status, use, init, uninit, help)
• /iikit-01-specify <description>
• /iikit-bugfix <description>
• /iikit-08-taskstoissues [--dry-run]

Why it matters

Pure UX polish for the .claude/skills/ layout. Already-loaded surface — no runtime cost.

Evidence

• Upstream commit: 10be4848
• PRs: feat: add argument-hint frontmatter to Claude Code commands (#1951) github/spec-kit#2059, #1951

Cost

Small — one line per skill frontmatter.

Sequencing

Tier 2.

[jbaruch]

Shipped in PR #89 → merged as 9b1b255.