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description: Frontend engineering review — walks the 7 Matt Pocock forcing questions (device, LCP target, rendering, bundle budget, SEO vs auth, design system, WCAG), picks the framework + rendering profile, forks into specialists (a11y-audit, performance-profiler, epic-design). Invokes the cs-frontend-engineer agent with context fork. argument-hint: ""

/cs:frontend-review — Frontend engineering review

Use the cs-frontend-engineer agent (uses context: fork) to handle this inquiry:

$ARGUMENTS

Forcing-question library

Canonical source: engineering-team/skills/senior-frontend/references/forcing_questions.md (7 questions, one-per-turn, recommendation + canon citation per question).

1. Primary device + network (desktop-fiber / mobile-4G / low-end Android / corporate)
2. LCP target on primary device (milliseconds)
3. Server Components vs SPA vs SSR vs SSG
4. JS bundle budget per route (KB gzipped)
5. SEO-dependent or auth-walled
6. Design-system location (Figma + tokens / ad-hoc Tailwind / headless UI)
7. WCAG target (AA / AAA / best-effort) + accessibility owner

Routing protocol

1. Walk the 7 forcing questions in engineering-team/skills/senior-frontend/references/forcing_questions.md. One per turn. Recommend with cited canon. Track in /tmp/frontend-grill-<date>.md.
2. Surface kill criteria — e.g., "SEO-dependent + SPA-only" trips. STOP and resolve.
3. Run the deterministic profile picker:

   python engineering-team/skills/senior-frontend/scripts/frontend_decision_engine.py \
     --primary-device <mobile-4g|desktop-fiber|low-end-android|corporate-network> \
     --lcp-target-ms <N> --seo-dependent <true|false> \
     --auth-walled <true|false> --team-size <N>
   

4. Surface the matched profile + runner-up tradeoff (if within 15%).
5. Fork into specialists (one at a time, depth-first):
   • a11y-audit for WCAG baseline (always)
   • performance-profiler for CWV baseline + bundle audit
   • epic-design only for astro-or-static marketing surfaces
   • apple-hig-expert only for Apple-platform-native surfaces
   • dependency-auditor before any major release
   • cs-karpathy-reviewer before any commit

Output expectations (≤ 200-word digest)

• Matched profile + reason
• Three CWV targets (LCP, INP, CLS) at p75 on the primary device
• Per-route JS bundle budget in KB-gzip
• Named a11y owner
• List of specialists invoked + artifact paths
• Recommended next sub-skill

Anti-patterns

• ❌ Recommending Next App Router as a universal default. Device + SEO + auth decide rendering.
• ❌ Setting "fast" as a target. Pick a number in ms.
• ❌ Skipping a11y-audit on customer-facing surface.
• ❌ Reimplementing perf-profiling logic. Fork into performance-profiler.

Customization

Profiles live at engineering-team/skills/senior-frontend/profiles/. Four built-in: next-app-router, remix-or-sveltekit, vite-spa, astro-or-static. Copy one to <your-org>.json and adjust to add your org's defaults.

Related commands

• /cs:fullstack-review — full-stack lens (parent)
• /cs:backend-review — for API contract on the consumer side
• /cs:engineer-grill — cross-role 21-question grill
• /karpathy-check — Karpathy 4-principle review