metabuilder/docs/MVP_LAUNCH_CHECKLIST.md

MVP Launch Readiness Checklist

Status: Phase 5.4 Implementation Date: January 21, 2026 Objective: Prepare MetaBuilder for public MVP launch

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Executive Summary

This checklist ensures MetaBuilder meets production readiness standards across:

• Accessibility: WCAG AA compliance
• Performance: Core Web Vitals optimization
• Quality: E2E testing and cross-browser validation
• Security: HTTPS/SSL, headers, input validation
• Deployment: Monitoring, logging, rollback procedures

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Phase 1: Accessibility (WCAG AA)

1.1 Semantic HTML & ARIA Labels

• All <button> elements have aria-label or visible text
• All <input> elements have associated <label> with htmlFor
• All icons have aria-hidden="true" (decorative) or aria-label (interactive)
• All images have meaningful alt text or alt="" with aria-hidden
• Page regions use semantic elements: <main>, <header>, <footer>, <nav>, <aside>
• Headings follow proper hierarchy (no skipped levels)
• Links have descriptive text (not "click here")
• Form errors use role="alert" and aria-describedby
• Required fields marked with aria-required="true"
• Invalid inputs marked with aria-invalid="true"

Owner: Frontend Team Deadline: Week 1 Evidence: Automated checks (axe, WAVE) + manual testing

1.2 Keyboard Navigation

• All interactive elements reachable by Tab key
• Tab order follows visual flow (left→right, top→bottom)
• Focus trap in modals (Tab cycles within modal)
• Escape key closes modals/dropdowns
• Enter key activates buttons
• Space key toggles checkboxes/radio buttons
• Arrow keys navigate tabs/dropdowns/sliders
• No keyboard traps (user can always Tab out)
• Skip links available (optional but recommended)

Owner: Frontend Team Deadline: Week 1 Evidence: Manual keyboard navigation test

1.3 Color Contrast

• Normal text: 4.5:1 contrast minimum
• Large text (18pt+): 3:1 contrast minimum
• Graphical components: 3:1 contrast minimum
• Disabled states: 3:1 contrast minimum (if perceivable)
• Contrast verified with WebAIM or similar tool
• High contrast mode tested

Owner: Design + Frontend Teams Deadline: Week 1 Evidence: WebAIM Contrast Checker reports

1.4 Screen Reader Testing

• Tested with VoiceOver (macOS) or NVDA (Windows)
• Page title announced first
• All headings present and in rotor
• All links have descriptive text
• All form fields announced with labels
• Error messages announced
• Loading states announced (aria-busy, aria-live)
• Page structure announced (landmarks)
• No extraneous announcements

Owner: QA + Accessibility Deadline: Week 2 Evidence: Screen reader testing report

1.5 Focus Indicators

• Focus indicator visible on all interactive elements
• Focus outline at least 2px
• Focus outline contrasts with background
• Focus indicator in high contrast mode
• No use of outline: none without replacement
• Focus visible with mouse and keyboard

Owner: Frontend Team Deadline: Week 1 Evidence: Visual inspection

1.6 Forms & Validation

• Every input has associated <label>
• Required fields marked visually and with ARIA
• Error messages use role="alert"
• Errors linked to fields with aria-describedby
• Validation on blur (not just submit)
• Success messages announced
• Form can be submitted with keyboard only

Owner: Frontend Team Deadline: Week 1 Evidence: Form testing checklist

Accessibility Verification

# Automated testing
npm run test:accessibility  # If configured

# Manual testing
1. Disable mouse: Test Tab navigation only
2. Enable VoiceOver (macOS): Cmd+F5
3. Enable NVDA (Windows): Download from nvaccess.org
4. Check color contrast: WebAIM Contrast Checker
5. Run axe DevTools: Browser extension
6. Run WAVE: Browser extension

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Phase 2: Performance

2.1 Core Web Vitals

Largest Contentful Paint (LCP)

• LCP < 2.5 seconds
• Critical resources preloaded
• Images optimized and lazy-loaded
• Heavy components code-split
• Main thread work minimized

Measurement:

# Lighthouse audit
npm run build
npm run start
# Open DevTools > Lighthouse > Run audit

First Input Delay (FID) / Interaction to Next Paint (INP)

• FID < 100ms
• Long tasks broken into chunks
• Web Workers used for heavy computation
• Non-critical JS deferred
• React Suspense/useTransition used

Cumulative Layout Shift (CLS)

• CLS < 0.1
• Images/videos have size attributes
• No content inserted above existing content
• Ads/embeds reserve space
• Use transform instead of layout changes

2.2 Build Performance

• Build time < 5 seconds (target: 2.4s)
• Bundle size < 2 MB (target: 1.0 MB)
• TypeScript: 0 errors
• Type checking: Passes
• No critical console warnings

Verification:

npm run build  # Should complete in <5s

2.3 Code Splitting

• Route-based splitting enabled (automatic)
• Admin tools lazy-loaded
• Heavy components lazy-loaded
• No wildcard imports
• Tree-shaking verified

2.4 Image Optimization

• Using Next.js Image component
• Lazy loading for below-the-fold
• Priority attribute for above-the-fold
• Responsive sizing with width/height
• WebP + JPEG fallback
• Quality optimized (80-85%)

2.5 Font Optimization

• Using system fonts (or optimized web fonts)
• font-display: swap configured
• No @import from Google Fonts
• Fonts self-hosted
• Preloading only critical fonts

Performance Verification

# Lighthouse audit
1. Open DevTools (F12)
2. Go to Lighthouse tab
3. Click "Analyze page load"
4. Target: 85+ Performance score

# Web Vitals
1. Install: npm install web-vitals
2. Check browser console for metrics
3. Target: LCP <2.5s, FID <100ms, CLS <0.1

# Bundle analysis
npm run build -- --analyze

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Phase 3: Testing & Quality

3.1 E2E Tests

• E2E test suite runs: npm run test:e2e
• Test pass rate: >90% (>160/179 tests)
• Critical tests passing:
  • Homepage loads
  • Login works
  • Navigation works
  • Pagination works
  • CRUD operations work
  • Error handling works
  • Loading states display
  • Empty states display

Critical Fixes Priority:

1. Pagination tests (timeout issues)
2. Login/auth tests (state management)
3. CRUD operation tests (data setup)
4. Navigation tests (routing)

Execution:

npm run test:e2e
# Target: >90% passing

3.2 Cross-Browser Testing

Browsers to Test:

• Chrome/Chromium (latest)
• Firefox (latest)
• Safari (latest on Mac)
• Edge (latest on Windows)

Test Cases:

• Homepage loads correctly
• Navigation works
• Forms function properly
• Tables display correctly
• Modals display correctly
• Errors display correctly
• Loading states show
• Responsive design works

Device Testing:

• Mobile (iPhone SE / 375px)
• Tablet (iPad / 810px)
• Desktop (1024px+)
• Large screen (1440px+)

3.3 Responsive Design

Breakpoints:

• Mobile: 320px - 480px
• Tablet: 481px - 768px
• Desktop: 769px - 1024px
• Large: 1025px+

Checklist:

• Text readable without horizontal scrolling
• Buttons/controls large enough to tap (44px min)
• Images scale proportionally
• Navigation accessible on all sizes
• Forms usable on mobile
• No horizontal overflow
• Layout adapts to viewport

3.4 Performance Testing

• Lighthouse score: 85+ overall
• Performance score: 85+
• Accessibility score: 90+
• Best Practices: 90+
• SEO: 90+
• Load tested: Handles expected traffic

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Phase 4: Code Quality

4.1 TypeScript

• Build: 0 errors
• Type checking: Passes
• Strict mode enabled: Yes
• No any types (unless justified)
• No type assertions (unless necessary)

Verification:

npm run typecheck
npm run build

4.2 ESLint

• Linting: Passes or documented exclusions
• No critical warnings
• Accessibility plugin enabled: Yes
• React best practices enabled: Yes

Known Issues (Pre-existing):

• 254 ESLint violations (pre-existing, documented)
• Not blocking for MVP

Verification:

npm run lint

4.3 Code Organization

• One lambda per file (LAMBDA_PROMPT pattern)
• No circular dependencies
• Clear component hierarchy
• Consistent naming conventions
• Comments on complex logic

4.4 Console

• No errors in console
• No critical warnings
• Debug logging removed (or at debug level)
• Monitoring/tracking in place

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Phase 5: Security

5.1 HTTPS/SSL

• HTTPS enabled (not HTTP)
• SSL certificate valid
• Certificate not self-signed (for production)
• HSTS header configured (if applicable)

Header Configuration:

// In next.config.js or vercel.json
{
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        {
          "key": "Strict-Transport-Security",
          "value": "max-age=31536000; includeSubDomains"
        }
      ]
    }
  ]
}

5.2 Content Security Policy (CSP)

• CSP header configured
• Only trusted sources allowed
• Inline scripts minimized
• No unsafe-inline (unless justified)

Example Header:

"Content-Security-Policy": "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'"

5.3 Input Validation

• All form inputs validated
• Server-side validation (not just client)
• XSS protection enabled
• SQL injection prevention (using ORM)
• CSRF protection (if using forms)

5.4 Secrets Management

• No hardcoded secrets in code
• Environment variables for API keys
• Database passwords in secrets manager
• .env file in .gitignore
• Secrets not logged

Checklist:

# Check for secrets
git diff HEAD~ | grep -i "password\|api.key\|secret" || echo "✅ No secrets found"

# Verify .gitignore
grep ".env" .gitignore || echo "❌ .env not ignored"

5.5 Authentication & Authorization

• Authentication working (login/logout)
• Session management secure
• Password hashing (not plaintext)
• Rate limiting on login attempts
• Authorization checks on all endpoints
• CORS properly configured (if API)

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Phase 6: Deployment

6.1 Environment Setup

• Production database configured
• Environment variables set
• API endpoints configured
• Cache/CDN configured (if applicable)
• Monitoring enabled

Checklist:

# Verify environment
echo "Database: $DATABASE_URL"
echo "API Key: ${API_KEY:0:10}***"
echo "Environment: $NODE_ENV"

6.2 Build & Deployment

• Production build succeeds
• Build artifacts optimized
• Deployment process automated (CI/CD)
• Blue-green deployment enabled (if possible)
• Rollback procedure documented

Build Verification:

npm run build
npm run start
# Verify app loads at http://localhost:3000

6.3 Monitoring & Logging

• Error tracking enabled (Sentry, etc.)
• Performance monitoring enabled (Datadog, New Relic, etc.)
• Logs aggregated (ELK, Splunk, etc.)
• Alerts configured for critical errors
• Dashboard visible to ops team

6.4 Backup & Recovery

• Database backups automated
• Backup retention policy defined
• Restore procedure documented and tested
• Disaster recovery plan in place
• RTO/RPO defined

Documentation:

• How to restore from backup
• How to scale horizontally
• How to scale vertically
• How to rollback deployment

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Phase 7: Documentation

7.1 User Documentation

• Getting started guide
• Feature documentation
• FAQ / Common issues
• Support contact information
• Privacy policy / Terms of service

7.2 Technical Documentation

• API documentation
• Database schema documented
• Architecture guide
• Deployment guide
• Troubleshooting guide

Guides Created (Phase 5.4):

• PHASE5.4_ACCESSIBILITY_PERFORMANCE.md
• ACCESSIBILITY_QUICK_REFERENCE.md
• PERFORMANCE_OPTIMIZATION_GUIDE.md
• MVP_LAUNCH_CHECKLIST.md (this file)

7.3 Developer Documentation

• Setup instructions (local development)
• Code organization guide
• Testing procedures
• Git workflow / branching strategy
• Contribution guidelines

7.4 Operations Documentation

• Deployment procedures
• Monitoring dashboard access
• Alert escalation
• On-call procedures
• Incident response plan

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Pre-Launch Verification

Final QA (48 Hours Before Launch)

• All checklist items completed
• E2E tests passing (>90%)
• Lighthouse score: 85+
• No critical issues in staging
• Performance baseline established
• All documentation complete
• Team sign-off obtained

Launch Window

• Deployment scheduled for low-traffic time
• On-call team notified
• Rollback plan reviewed
• Monitoring dashboard live
• Comms plan ready (status page, etc.)

Post-Launch (First 24 Hours)

• Monitor error rates (target: <0.1%)
• Monitor performance metrics
• Check user feedback
• Verify analytics tracking
• Document any issues
• Prepare hotfix if needed

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Success Criteria

Category	Metric	Target	Status
Accessibility
WCAG AA Compliance	100%	100%	⏳ Implement
Screen Reader	Pass VoiceOver/NVDA	Pass	⏳ Test
Keyboard Nav	100% interactive	100%	⏳ Verify
Performance
LCP	<2.5s	<2.5s	⏳ Measure
FID/INP	<100ms	<100ms	⏳ Measure
CLS	<0.1	<0.1	⏳ Measure
Lighthouse	85+	85+	⏳ Audit
Quality
E2E Tests	>90% passing	>90%	⏳ Fix
TypeScript	0 errors	0	✅ Pass
Build Time	<5s	<5s	✅ Pass
Security
HTTPS	Yes	Yes	⏳ Deploy
CSP	Configured	Yes	⏳ Deploy
Input Validation	100%	100%	✅ Done

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Launch Sign-Off

Required Approvals:

• Product Manager: Features complete, ready to launch
• Engineering Lead: Code quality acceptable, known issues documented
• QA Lead: Testing complete, issues resolved
• Security Team: Security review passed
• Operations: Deployment and monitoring ready

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Post-Launch Monitoring

First Week:

• Daily error rate checks
• Daily performance checks
• User feedback review
• Bug tracking and prioritization

First Month:

• Weekly performance reports
• User adoption metrics
• Support ticket analysis
• Feature feedback collection

Ongoing:

• Monthly performance reports
• Quarterly security audits
• Continuous improvement cycle

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Rollback Procedures

If Critical Issue Found

# 1. Assess severity (< 5 min)
#    - Is it blocking usage? (Critical)
#    - Is it affecting data? (Critical)
#    - Is it affecting experience? (High)

# 2. Decide: Fix in place OR Rollback
#    - Rollback if: Quick fix unclear, risk high
#    - Fix in place if: Clear solution, low risk

# 3. If Rollback:
git revert HEAD~1
npm run build
npm run deploy:production

# 4. Communicate
# - Update status page
# - Notify users (if affected)
# - Document incident

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Next Steps (Post-Launch)

1. Week 1: Stabilization & bug fixes
2. Week 2-4: Performance optimization & refinement
3. Month 2: Feature expansion & user feedback
4. Month 3: Scale infrastructure, add monitoring

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Contact Information

Product: [Product Owner Name] Engineering: [Engineering Lead Name] QA: [QA Lead Name] Operations: [Ops Lead Name] Security: [Security Lead Name]

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Related Documents

• Phase 5.4 Accessibility & Performance
• Accessibility Quick Reference
• Performance Optimization Guide
• Deployment Guide
• Operations Manual

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Status: ✅ Ready for Phase 5.4 Implementation

Last Updated: January 21, 2026

Next Review: January 28, 2026 (Before Launch)