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perf: eliminate Three.js/WebGL, fix render-blocking CSS, add dev team agents 
- 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>
2026-03-05 23:40:01 +01:00

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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; uses directusRequest() 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)

  1. Directus CMS (if DIRECTUS_STATIC_TOKEN set) → 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

  1. Read lib/directus.ts to check for existing GraphQL query patterns
  2. Add GraphQL query + TypeScript types to lib/directus.ts for new Directus collections
  3. All POST/PUT endpoints need input validation
  4. n8n proxies need rate limiting and 10s timeout
  5. Error logging: if (process.env.NODE_ENV === "development") console.error(...)
  6. Run npm run build to verify TypeScript compiles without errors
  7. 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