メニュー
Generate safe, reversible Postgres/Supabase migrations using the expand→backfill→contract pattern, avoiding locks and data loss. Use when altering schema, adding/removing columns, or changing types on tables that already hold data.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Design, build, verify, and publish a curated Claude Code pack — a reusable collection of rules, skills, hooks, loops, and review agents — to GitHub. Trigger this skill whenever the user wants to "create a Claude Code pack", "build a rules/hooks/skills collection", "make a guardrail pack", "package my hooks/skills/agents", "publish a Claude Code config to GitHub", or assemble enforced standards for a stack (e.g. Next.js + Supabase, Django, etc.). This skill is the methodology that produced github.com/m-binimran/dev-pack; reuse it instead of re-deriving the process. Run it BEFORE writing any pack files — it sequences research, clarification, building, verification, and safe publishing.
Audit a web page/component against WCAG 2.2 AA — semantics, keyboard, contrast, labels, focus, alt text. Use when reviewing UI for accessibility or before shipping a page.
Implement web animations with the right engine (Motion, GSAP, Anime.js, React Spring, tailwindcss-motion) and a mandatory prefers-reduced-motion fallback at 60fps. Use when adding any motion to a site.
Design Next.js route handlers and server actions with input validation, correct status codes, error handling, and rate limiting. Use when building an API endpoint, server action, or webhook receiver.
Get Next.js App Router caching right — static vs dynamic rendering, fetch cache, revalidatePath/revalidateTag, and ISR. Use when data is stale, a page won't update, or you're tuning performance vs freshness.
Build a production React component on shadcn/ui + Tailwind — variants, compound pattern, accessible states, and a clean prop API. Use when creating a new UI component or refactoring a messy one.
| name | migration-safety |
| description | Generate safe, reversible Postgres/Supabase migrations using the expand→backfill→contract pattern, avoiding locks and data loss. Use when altering schema, adding/removing columns, or changing types on tables that already hold data. |
Every migration must be reversible and must not lock a busy table or drop data by surprise.
(The migration-validate hook checks your output — design to pass it.)
up: the change.down: the exact rollback. If a change is truly irreversible (dropping data), say so loudly
and require explicit confirmation.update ... where id between ...), not one giant statement.NOT NULL/constraint and drop the old column — in a later migration,
after the app writes both.ADD COLUMN ... NOT NULL with no DEFAULT on a non-empty table → fails / full rewrite. Add a default.ALTER COLUMN TYPE → rewrites + locks. Prefer add-new-column + backfill.CREATE INDEX CONCURRENTLY (outside a txn).up SQL, down SQL, and a one-line risk note (lock risk / data-loss risk / safe).