- 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>
Remove @sentry/nextjs and all related files since it was never actively used.
- Delete sentry.server.config.ts, sentry.edge.config.ts
- Delete sentry-example-page and sentry-example-api routes
- Clean up instrumentation.ts, global-error.tsx, middleware.ts
- Remove Sentry env vars from env.example and docs
- Update CLAUDE.md, copilot-instructions.md, PRODUCTION_READINESS.md
Middleware bundle reduced from 86KB to 34.8KB (-51KB).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
