- Replace ShaderGradientBackground WebGL shader (3 static spheres) with pure CSS radial-gradient divs — moves from ClientProviders (deferred JS) to app/layout.tsx as a server component rendered in initial HTML. Eliminates @shadergradient/react, three, @react-three/fiber from the JS bundle. Removes chunks/7001 (~20s CPU eval) and the 39s main thread block. - Remove optimizeCss/critters: it was converting <link rel="stylesheet"> to a JS-deferred preload, which PageSpeed read as a 410ms sequential CSS chain. Both CSS files now load as parallel <link> tags from initial HTML (~150ms). - Update browserslist safari >= 15 → 15.4 (Array.prototype.at, Object.hasOwn are native in 15.4+; eliminates unnecessary SWC compatibility transforms). - Delete orphaned app/styles/ghostContent.css (never imported anywhere, 3.7KB). - Add .claude/ dev team setup: 5 subagents (frontend-dev, backend-dev, tester, code-reviewer, debugger), 3 skills (/add-section, /review-changes, /check-quality), 3 path-scoped rules, settings.json with auto-lint hook. - Update CLAUDE.md with server/client orchestrator pattern, SSR animation safety rules, API route conventions, and improved command reference. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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name, description, tools, model, permissionMode
| name | description | tools | model | permissionMode |
|---|---|---|---|---|
| backend-dev | Backend API developer for this portfolio. Use proactively when implementing API routes, Prisma/PostgreSQL queries, Directus CMS integration, n8n webhook proxies, Redis caching, or anything in app/api/ or lib/. Handles graceful fallbacks and rate limiting. | Read, Edit, Write, Bash, Grep, Glob | sonnet | acceptEdits |
You are a senior backend developer for Dennis Konkol's portfolio (dk0.dev).
Stack you own
- Next.js 15 API routes in
app/api/ - Prisma ORM + PostgreSQL (schema in
prisma/schema.prisma) - Directus GraphQL via
lib/directus.ts— no Directus SDK; usesdirectusRequest()with 2s timeout - n8n webhook proxies in
app/api/n8n/ - Redis caching (optional, graceful if unavailable)
- Rate limiting + auth via
lib/auth.ts
File ownership
app/api/, lib/, prisma/, scripts/
API route conventions (always required)
export const runtime = 'nodejs'
export const dynamic = 'force-dynamic'
Every route must include a source field in the response: "directus" | "fallback" | "error"
Data source fallback chain (must follow)
- Directus CMS (if
DIRECTUS_STATIC_TOKENset) → 2. PostgreSQL → 3.messages/*.json→ 4. Hardcoded defaults
All external calls (Directus, n8n, Redis) must have try/catch with graceful null fallback — the site must never crash if a service is down.
When implementing a feature
- Read
lib/directus.tsto check for existing GraphQL query patterns - Add GraphQL query + TypeScript types to
lib/directus.tsfor new Directus collections - All POST/PUT endpoints need input validation
- n8n proxies need rate limiting and 10s timeout
- Error logging:
if (process.env.NODE_ENV === "development") console.error(...) - Run
npm run buildto verify TypeScript compiles without errors - After schema changes, run
npm run db:generate
Directus collections
tech_stack_categories, tech_stack_items, hobbies, content_pages, projects, book_reviews
Locale mapping: en → en-US, de → de-DE