glam/docs/plan/frontend/05-master-checklist.md

GLAM Frontend Implementation Master Checklist

Project Overview

Objective: Build a modern React + TypeScript frontend for the GLAM Heritage Custodian Ontology, migrating and enhancing functionality from the example_ld project.

Timeline: 16 weeks (4 months)
Team Size: 1-2 developers
Tech Stack: React 18, TypeScript 5, Vite, D3.js v7, N3.js, Zustand, React Query

---

Pre-Flight Checklist

Environment Setup

• Node.js 18+ installed
• npm or yarn configured
• Git repository initialized
• Code editor with TypeScript support (VS Code recommended)
• Browser dev tools configured (React DevTools, Redux DevTools)

Access Verification

• Access to /Users/kempersc/apps/example_ld for reference
• Access to /Users/kempersc/apps/glam for development
• Access to RDF schemas at /schemas/20251121/rdf/
• Access to UML diagrams at /schemas/20251121/uml/

---

Phase 1: Foundation (Weeks 1-2)

Week 1: Project Initialization

Day 1: Project Structure

• Create frontend/ directory in glam project
• Initialize Vite project with React + TypeScript template

  cd /Users/kempersc/apps/glam
  mkdir frontend
  cd frontend
  npm create vite@latest . -- --template react-ts
  

• Create directory structure:

  mkdir -p src/{components,lib,hooks,stores,types,utils,pages,styles}
  mkdir -p src/components/{layout,visualizations,forms,ui}
  mkdir -p src/lib/{rdf,storage,api,utils}
  mkdir -p tests/{unit,integration,e2e}
  mkdir -p public/assets
  

• Initialize Git (if not already done)
• Create .gitignore file
• Create README.md with project setup instructions

Day 2: Dependencies Installation

• Install core dependencies:

  npm install d3 @types/d3 n3 rdflib zustand @tanstack/react-query
  npm install react-router-dom axios
  npm install leaflet @types/leaflet
  npm install date-fns lodash @types/lodash
  

• Install dev dependencies:

  npm install -D vitest @vitest/ui @testing-library/react
  npm install -D @testing-library/jest-dom @testing-library/user-event
  npm install -D @playwright/test
  npm install -D eslint @typescript-eslint/parser @typescript-eslint/eslint-plugin
  npm install -D prettier eslint-config-prettier eslint-plugin-prettier
  npm install -D @types/node
  

• Verify all dependencies installed correctly
• Run npm run dev to test Vite dev server

Day 3: Configuration Files

• Configure TypeScript (tsconfig.json):
  • Set strict: true
  • Configure path aliases (@/ → src/)
  • Set target: "ES2022"
• Configure Vite (vite.config.ts):
  • Add path aliases
  • Configure build optimization
  • Set up proxy for backend APIs
• Configure Vitest (vitest.config.ts):
  • Set up test environment
  • Configure coverage reporting
  • Add test globals
• Configure ESLint (.eslintrc.json):
  • Add TypeScript rules
  • Add React rules
  • Add import sorting
• Configure Prettier (.prettierrc)
• Create .editorconfig for consistent formatting

Day 4: Core Type Definitions

• Create src/types/rdf.ts:
  • RdfFormat enum
  • Triple interface
  • Quad interface
  • ParseResult interface
  • SerializeOptions interface
• Create src/types/graph.ts:
  • GraphNode interface
  • GraphLink interface
  • GraphData interface
  • VisualizationConfig interface
• Create src/types/api.ts:
  • ApiResponse<T> type
  • ApiError interface
  • FetchOptions interface
• Create src/types/database.ts:
  • RdfRecord interface
  • DatabaseConfig interface
  • StorageAdapter interface

Day 5: Testing Infrastructure

• Create test setup file (tests/setup.ts)
• Create test utilities (tests/utils/)
  • render-with-providers.tsx (React Query, Router wrappers)
  • mock-data.ts (sample RDF data)
  • test-helpers.ts (common assertions)
• Write first test (smoke test for App.tsx)
• Configure Playwright for E2E tests
• Create example E2E test
• Set up CI/CD pipeline basics (GitHub Actions or similar)

Week 2: Core Library Migration

Day 6-7: IndexedDB Manager (db.js → indexed-db.ts)

• Copy /Users/kempersc/apps/example_ld/js/db.js for reference
• Create src/lib/storage/indexed-db.ts
• Define TypeScript interfaces:

  interface RdfData {
    id: string;
    triples: Triple[];
    metadata: Metadata;
    timestamp: Date;
  }
  

• Convert to Promise-based API
• Implement database initialization
• Implement CRUD operations:
  • saveRdfData(data: RdfData): Promise<void>
  • getRdfData(id: string): Promise<RdfData | null>
  • getAllRdfData(): Promise<RdfData[]>
  • deleteRdfData(id: string): Promise<void>
  • clearDatabase(): Promise<void>
• Add transaction handling
• Add error handling
• Write unit tests (10+ tests):
  • Test initialization
  • Test CRUD operations
  • Test error cases
  • Test concurrent operations
• Create React hook useDatabase.ts
• Test hook with React Testing Library

Day 8-9: RDF Parser (rdfParser.js → parser.ts)

• Copy /Users/kempersc/apps/example_ld/js/rdfParser.js for reference
• Create src/lib/rdf/parser.ts
• Integrate N3.js library
• Implement parser class:

  class RdfParser {
    async parse(data: string, format: RdfFormat): Promise<ParseResult>
    async serialize(store: Store, format: RdfFormat): Promise<string>
    validate(data: string, format: RdfFormat): ValidationResult
  }
  

• Support multiple formats:
  • Turtle
  • N-Triples
  • N-Quads
  • JSON-LD
  • RDF/XML
• Add format auto-detection
• Implement validation
• Add error handling with detailed messages
• Write unit tests (15+ tests):
  • Test each format parsing
  • Test serialization
  • Test validation
  • Test error cases
  • Test large files
• Create React hook useRdfParser.ts
• Add Web Worker support for large files

Day 10: Utilities Migration (utils.js → helpers.ts)

• Copy /Users/kempersc/apps/example_ld/js/utils.js for reference
• Create src/lib/utils/helpers.ts
• Convert utility functions to TypeScript:
  • URL validation
  • Format detection
  • String formatting
  • Date formatting
  • Error formatting
• Remove unused functions (tree-shaking)
• Add new utility functions:
  • debounce and throttle
  • deepClone
  • groupBy
  • chunk
• Write unit tests (20+ tests)
• Document all functions with JSDoc

---

Phase 2: React Component Architecture (Weeks 3-4)

Week 3: Layout and Page Components

Day 11-12: Layout Components

• Create src/components/layout/Header.tsx:
  • Logo and branding
  • Navigation menu
  • User menu (if auth enabled)
  • Theme toggle
• Create src/components/layout/Sidebar.tsx:
  • Navigation links
  • Collapsible sections
  • Active link highlighting
• Create src/components/layout/Footer.tsx:
  • Copyright information
  • Links to documentation
  • Version number
• Create src/components/layout/Layout.tsx:
  • Combine header, sidebar, footer
  • Responsive layout
  • Mobile menu
• Style all layout components
• Write component tests
• Test responsive behavior

Day 13: Page Components (Part 1)

• Create src/pages/Home.tsx (replaces index.html):
  • Welcome message
  • Quick start guide
  • Recent datasets
  • Statistics overview
• Create src/pages/ApiExplorer.tsx (replaces api.html):
  • API endpoint tester
  • Request builder
  • Response viewer
  • Example requests
• Set up React Router:
  • Define routes
  • Create route configuration
  • Add 404 page
• Test navigation between pages

Day 14: Page Components (Part 2)

• Create src/pages/DatabaseManager.tsx (replaces databases.html):
  • List stored RDF datasets
  • Import/export functionality
  • Database statistics
  • Clear database option
• Create src/pages/GraphVisualization.tsx (replaces graphVisualization.html):
  • Graph container
  • Control panel
  • Legend
  • Export options
• Create src/pages/RdfVisualization.tsx (replaces visualization.html):
  • RDF data viewer
  • Format selector
  • Syntax highlighting
  • Download options
• Test all pages
• Ensure consistent styling

Day 15: UI Components Library

• Create src/components/ui/Button.tsx:
  • Primary, secondary, danger variants
  • Size options
  • Loading state
  • Disabled state
• Create src/components/ui/Modal.tsx:
  • Backdrop
  • Close button
  • Portal rendering
  • Keyboard navigation (Escape to close)
• Create src/components/ui/Tooltip.tsx:
  • Positioning logic
  • Arrow indicator
  • Delay options
• Create src/components/ui/Input.tsx:
  • Text input
  • Validation states
  • Error messages
• Create src/components/ui/Select.tsx:
  • Dropdown select
  • Search functionality
  • Multi-select option
• Write Storybook stories (or tests) for each component
• Ensure accessibility (ARIA labels, keyboard nav)

Week 4: Form Components

Day 16-17: RDF Upload Form

• Create src/components/forms/RdfUpload.tsx:
  • File picker
  • Drag-and-drop support
  • Format selection
  • URL input option
  • Preview pane
• Implement file upload logic:
  • Client-side validation
  • File size limits
  • Format detection
  • Progress indicator
• Parse uploaded RDF
• Store in IndexedDB
• Display success/error messages
• Write component tests
• Test with various file sizes

Day 18: SPARQL Query Form

• Create src/components/forms/QueryForm.tsx:
  • Query textarea with syntax highlighting
  • Example queries dropdown
  • Execute button
  • Clear button
• Implement SPARQL execution:
  • Query validation
  • Execute against local store
  • Display results in table
  • Export results (CSV, JSON)
• Add query history
• Write component tests

Day 19: Configuration Forms

• Create src/components/forms/VisualizationConfig.tsx:
  • Layout algorithm selection
  • Color scheme picker
  • Node size options
  • Label visibility toggle
• Create src/components/forms/ExportConfig.tsx:
  • Format selection
  • Quality settings
  • Filename input
• Implement form validation with react-hook-form
• Write form tests

Day 20: Error Boundaries and Loading States

• Create src/components/ErrorBoundary.tsx:
  • Catch React errors
  • Display user-friendly error message
  • Log errors for debugging
  • Reset button
• Create src/components/LoadingState.tsx:
  • Spinner component
  • Skeleton screens
  • Progressive loading
• Create src/components/EmptyState.tsx:
  • No data illustrations
  • Helpful messages
  • Call-to-action buttons
• Apply to all pages
• Test error scenarios

---

Phase 3: D3 Visualizations (Weeks 5-6)

Week 5: Force-Directed Graph

Day 21-22: D3 Graph Migration (graphVisualization.js → d3-graph.ts)

• Copy /Users/kempersc/apps/example_ld/js/graphVisualization.js for reference
• Create src/components/visualizations/GraphView/d3-graph.ts
• Upgrade D3 v5 syntax to v7:
  • Update force simulation API
  • Update selection API
  • Update scale API
• Implement core force-directed layout:
  • Node positioning
  • Link rendering
  • Force parameters (charge, link distance, collision)
• Add node styling by type:
  • Color schemes
  • Shape variations
  • Size variations
• Add link styling by relationship:
  • Stroke width
  • Stroke color
  • Arrows/markers

Day 23: Graph Interactivity

• Implement zoom and pan:
  • d3.zoom() behavior
  • Scale extent limits
  • Smooth transitions
• Implement node dragging:
  • Drag behavior
  • Fix node position on drag
  • Release to resume simulation
• Implement node click handling:
  • Select node
  • Show details panel
  • Highlight connected nodes
• Implement hover effects:
  • Tooltip with node info
  • Highlight on hover
  • Dim unrelated nodes
• Add keyboard navigation:
  • Arrow keys to navigate nodes
  • Enter to expand
  • Escape to deselect

Day 24-25: React Integration

• Create React hook useD3ForceGraph:
  • Accept nodes and links as props
  • Return SVG ref
  • Handle cleanup on unmount
  • Respond to data changes
• Create src/components/visualizations/GraphView/index.tsx:
  • Use the D3 hook
  • Add control panel
  • Add legend
  • Add export button
• Create control components:
  • Layout algorithm selector
  • Filter controls
  • Search box
  • Reset button
• Implement filtering:
  • By node type
  • By relationship type
  • By search term
• Test with sample data
• Test with large datasets (1000+ nodes)

Week 6: Additional Visualizations

Day 26-27: Timeline Visualization

• Create src/components/visualizations/Timeline/index.tsx
• Implement temporal change visualization:
  • Time scale (d3.scaleTime)
  • Swim lanes for institutions
  • Event markers (founding, merger, closure)
• Add interactivity:
  • Zoom to time range
  • Click event for details
  • Tooltip with event info
• Add controls:
  • Date range selector
  • Event type filter
  • Institution filter
• Style timeline:
  • Color code by event type
  • Symbol shapes
  • Grid lines
• Write visualization tests

Day 28: Geographic Map

• Create src/components/visualizations/Map/index.tsx
• Integrate Leaflet for base map
• Add D3 overlay for custom markers:
  • Circle markers scaled by count
  • Color by institution type
  • Cluster markers when zoomed out
• Implement interactivity:
  • Click marker for details
  • Hover for preview
  • Zoom to region
• Add map controls:
  • Layer toggle (street, satellite)
  • Legend
  • Search by location
• Test with geocoded data

Day 29: Class Hierarchy Tree

• Create src/components/visualizations/Hierarchy/index.tsx
• Implement tree layout (d3.tree):
  • Hierarchical positioning
  • Collapsible nodes
  • Smooth transitions
• Style tree nodes:
  • Rectangles for classes
  • Diamonds for properties
  • Circles for datatypes
• Add interactivity:
  • Click to expand/collapse
  • Zoom to fit
  • Search and highlight
• Add breadcrumb navigation
• Test with ontology data

Day 30: Visualization Testing

• Write unit tests for D3 utilities
• Write integration tests for each visualization
• Visual regression tests (Percy, Chromatic, or screenshots)
• Performance tests:
  • Measure render time
  • Test with 100, 1000, 10000 nodes
  • Profile memory usage
• Accessibility tests:
  • Keyboard navigation
  • Screen reader support
  • Color contrast
• Cross-browser testing (Chrome, Firefox, Safari, Edge)

---

Phase 4: State Management and API (Weeks 7-8)

Week 7: State Management

Day 31-32: Zustand Stores

• Create src/stores/rdf-store.ts:
  • RDF data state
  • Loading states
  • Error states
  • Actions (load, parse, save, clear)
• Create src/stores/ui-store.ts:
  • Theme state (light/dark)
  • Sidebar collapsed state
  • Selected visualization type
  • Filter states
  • Actions (toggle theme, set view, update filters)
• Create src/stores/visualization-store.ts:
  • Visualization configuration
  • Selected nodes/links
  • Zoom level
  • Actions (update config, select item, reset)
• Write store tests
• Document store usage

Day 33: React Query Setup

• Configure React Query client:
  • Set default options
  • Configure caching strategy
  • Set retry logic
• Create query hooks:
  • useRdfData(url: string)
  • useOntology(schemaId: string)
  • useInstitutions(filters: FilterOptions)
• Create mutation hooks:
  • useUploadRdf()
  • useDeleteRdf()
  • useUpdateRdf()
• Add optimistic updates
• Add cache invalidation logic
• Write query tests

Day 34-35: API Client

• Copy /Users/kempersc/apps/example_ld/js/api.js for reference
• Create src/lib/api/client.ts:
  • Axios instance configuration
  • Request interceptors
  • Response interceptors
  • Error handling
• Implement API methods:
  • fetchRdf(url: string, format: RdfFormat)
  • fetchSparqlResults(query: string, endpoint: string)
  • uploadRdf(file: File)
  • transformRdf(data: string, format: RdfFormat)
• Add retry logic with exponential backoff
• Add circuit breaker pattern
• Add request cancellation
• Write API client tests (mock axios)
• Test error scenarios

Week 8: Data Integration

Day 36-37: RDF Schema Loading

• Load schemas from /schemas/20251121/rdf/:
  • 01_custodian_name.owl.ttl
  • Other schema files
• Parse schema with N3.js
• Extract classes and properties
• Build class hierarchy
• Store in IndexedDB for offline use
• Create schema browsing UI
• Test with actual schema files

Day 38: UML Diagram Parsing

• Load UML diagrams from /schemas/20251121/uml/:
  • Mermaid files (.mmd)
  • PlantUML files (.puml)
• Create Mermaid parser:
  • Parse class diagrams
  • Parse ER diagrams
  • Extract nodes and relationships
• Create PlantUML parser:
  • Parse syntax
  • Extract classes
  • Extract relationships
• Convert to D3-compatible format
• Test parsers with actual diagram files

Day 39-40: Data Pipeline

• Create data flow pipeline:
  1. Load RDF schema
  2. Parse with N3.js
  3. Store in IndexedDB
  4. Query with SPARQL (in-memory)
  5. Transform to visualization format
  6. Render with D3
• Optimize for performance:
  • Use Web Workers for parsing
  • Implement streaming for large files
  • Add pagination for results
• Add progress indicators
• Test end-to-end flow
• Profile performance bottlenecks

---

Phase 5: Testing and Quality (Weeks 9-10)

Week 9: Comprehensive Testing

Day 41-42: Unit Tests

• Achieve 80%+ code coverage for:
  • src/lib/rdf/parser.ts
  • src/lib/storage/indexed-db.ts
  • src/lib/api/client.ts
  • src/lib/utils/helpers.ts
• Test all utility functions
• Test all custom hooks
• Test store actions and selectors
• Review coverage report
• Add missing tests

Day 43-44: Component Tests

• Test all UI components:
  • Button, Modal, Tooltip, Input, Select
• Test all form components:
  • RdfUpload, QueryForm, Config forms
• Test all page components:
  • Home, ApiExplorer, DatabaseManager, etc.
• Test layout components:
  • Header, Sidebar, Footer
• Use React Testing Library best practices
• Test user interactions
• Test accessibility

Day 45: Integration Tests

• Test complete user flows:
  • Upload RDF → Parse → Visualize
  • Query SPARQL → Display results
  • Load schema → Browse classes
  • Filter graph → Export
• Test state management integration
• Test API integration
• Test database persistence
• Test error recovery

Week 10: E2E Testing and Performance

Day 46-47: Playwright E2E Tests

• Set up Playwright test environment
• Write E2E tests for:
  • User onboarding flow
  • RDF upload and visualization
  • Graph interaction
  • SPARQL queries
  • Export functionality
• Test cross-browser (Chromium, Firefox, WebKit)
• Test responsive layouts (mobile, tablet, desktop)
• Add visual regression tests
• Generate test reports

Day 48: Performance Optimization

• Run Lighthouse audits
• Optimize bundle size:
  • Code splitting
  • Tree shaking
  • Dynamic imports
  • Analyze with vite-bundle-visualizer
• Optimize rendering:
  • Memoization (useMemo, useCallback)
  • Virtualization for large lists
  • Debounce expensive operations
• Optimize network requests:
  • Caching strategies
  • Request deduplication
  • Compression
• Profile with React DevTools Profiler
• Measure Core Web Vitals

Day 49-50: Accessibility Audit

• Run axe DevTools
• Fix all critical accessibility issues
• Ensure WCAG 2.1 AA compliance:
  • Keyboard navigation
  • Screen reader support
  • Color contrast
  • Focus indicators
  • ARIA labels
• Test with screen readers (NVDA, JAWS, VoiceOver)
• Create accessibility documentation

---

Phase 6: Backend Services (Weeks 11-12)

Week 11: Python Service Migration

Day 51-53: RDF Transformer Service

• Copy /Users/kempersc/apps/example_ld/extract_and_transform.py for reference
• Create backend/services/rdf-transformer/:
  • FastAPI or Flask application
  • Dockerfile
  • Requirements.txt
• Implement API endpoints:
  • POST /transform - Transform RDF formats
  • POST /validate - Validate RDF syntax
  • POST /merge - Merge multiple RDF files
• Add request validation with Pydantic
• Add error handling
• Add logging
• Write Python tests (pytest)
• Create API documentation (OpenAPI/Swagger)

Day 54-55: OAI-PMH Harvester Service

• Create backend/services/harvester/:
  • FastAPI application
  • Celery for async tasks
  • Redis for task queue
• Implement harvesting logic:
  • OAI-PMH protocol support
  • Incremental harvesting
  • Error recovery
  • Rate limiting
• Implement API endpoints:
  • POST /harvest - Start harvest job
  • GET /harvest/:id - Get job status
  • GET /harvests - List all harvests
• Add scheduling (APScheduler or Celery beat)
• Write tests
• Document API

Week 12: Backend Integration

Day 56-57: MARC Converter Service

• Create backend/services/marc-converter/:
  • FastAPI application
  • MARC21 parsing library
• Implement conversion logic:
  • MARC21 to RDF
  • MARCXML to RDF
  • Validate MARC records
• Implement API endpoints:
  • POST /convert - Convert MARC to RDF
  • POST /validate - Validate MARC
• Write tests
• Document API

Day 58-59: Backend Deployment

• Create Docker Compose configuration:
  • RDF transformer service
  • Harvester service
  • MARC converter service
  • Redis
  • PostgreSQL (if needed)
• Set up service communication
• Configure environment variables
• Add health check endpoints
• Test local deployment
• Document deployment process

Day 60: Frontend-Backend Integration

• Update frontend API client to call backend services
• Test RDF transformation flow
• Test harvesting flow
• Test MARC conversion flow
• Add error handling for backend errors
• Add loading states
• Test with production-like data

---

Phase 7: Polish and Documentation (Weeks 13-14)

Week 13: UI/UX Polish

Day 61-62: Design Refinement

• Review all pages for consistency
• Standardize spacing and typography
• Refine color scheme
• Add transitions and animations
• Improve loading states
• Improve error messages
• Add empty states
• Polish mobile experience

Day 63: User Onboarding

• Create welcome tour (react-joyride or similar)
• Add tooltips for complex features
• Create quick start guide
• Add example datasets
• Add sample queries
• Create video tutorial (optional)

Day 64-65: Internationalization (Optional)

• Set up i18n (react-i18next)
• Extract all text to translation files
• Add language selector
• Support at least English and Dutch
• Test with different languages
• Document translation process

Week 14: Documentation

Day 66-67: User Documentation

• Create user guide:
  • Getting started
  • Uploading RDF data
  • Visualizing data
  • Running SPARQL queries
  • Exporting results
  • Troubleshooting
• Create FAQ
• Add inline help text
• Create video tutorials (optional)

Day 68-69: Developer Documentation

• Document codebase architecture
• Document component API
• Document state management
• Create contribution guide
• Document build and deployment
• Create API reference
• Add code examples

Day 70: Release Preparation

• Create CHANGELOG.md
• Update README.md
• Create LICENSE file
• Set up GitHub releases
• Create release notes
• Tag version 1.0.0

---

Phase 8: Deployment and Monitoring (Weeks 15-16)

Week 15: Deployment

Day 71-72: Production Build

• Optimize Vite build configuration
• Set up environment variables for production
• Build frontend bundle
• Build backend Docker images
• Test production build locally
• Fix any production-only issues

Day 73-74: Hosting Setup

• Choose hosting platform:
  • Vercel/Netlify (frontend)
  • AWS/GCP/Azure (backend)
  • Or self-hosted
• Set up frontend deployment:
  • Configure build settings
  • Set up custom domain
  • Configure HTTPS
  • Set up CDN
• Set up backend deployment:
  • Deploy Docker containers
  • Configure load balancer
  • Set up database
  • Configure Redis
• Test deployed application
• Set up staging environment

Day 75: CI/CD Pipeline

• Set up GitHub Actions (or GitLab CI):
  • Run tests on push
  • Run linting
  • Build on merge to main
  • Deploy to staging automatically
  • Deploy to production on tag
• Set up deployment notifications
• Document CI/CD process

Week 16: Monitoring and Maintenance

Day 76-77: Monitoring Setup

• Set up error tracking (Sentry, Rollbar)
• Set up analytics (Google Analytics, Plausible)
• Set up performance monitoring (Lighthouse CI)
• Set up uptime monitoring (UptimeRobot, Pingdom)
• Set up log aggregation (if needed)
• Create monitoring dashboard

Day 78: Security Audit

• Run npm audit and fix vulnerabilities
• Review Content Security Policy
• Review CORS configuration
• Test for XSS vulnerabilities
• Test for CSRF vulnerabilities
• Review authentication (if implemented)
• Test rate limiting
• Document security practices

Day 79: Load Testing

• Set up load testing tool (k6, Artillery)
• Test API endpoints under load
• Test database performance
• Test frontend performance with large datasets
• Identify bottlenecks
• Optimize as needed
• Document performance characteristics

Day 80: Launch and Handoff

• Final QA testing
• Deploy to production
• Announce launch
• Monitor for issues
• Create maintenance plan
• Create bug report process
• Schedule regular updates
• Celebrate! 🎉

---

Post-Launch Checklist

Week 17+: Maintenance and Enhancement

Ongoing Tasks

• Monitor error rates and fix bugs
• Review user feedback
• Update dependencies regularly
• Review and merge pull requests
• Improve documentation based on user questions
• Plan feature enhancements

Monthly Tasks

• Review analytics data
• Run security audit
• Update dependencies
• Review performance metrics
• Backup database
• Review and update documentation

Quarterly Tasks

• Major feature releases
• Comprehensive testing
• User survey
• Performance optimization sprint
• Security review

---

Success Metrics

Technical Metrics

• Test coverage > 80%
• Bundle size < 500KB (gzipped)
• Lighthouse score > 90
• Page load time < 2 seconds
• API response time < 200ms (p95)
• Zero critical vulnerabilities

User Metrics

• User satisfaction score > 4/5
• Task completion rate > 90%
• Error rate < 1%
• Daily active users growth
• Feature adoption rate

---

Risk Mitigation

Technical Risks

Risk	Mitigation
D3 v5 → v7 breaking changes	Thorough testing, gradual migration
Large RDF file performance	Web Workers, streaming, pagination
Browser compatibility	Cross-browser testing, polyfills
State management complexity	Clear documentation, simple patterns

Project Risks

Risk	Mitigation
Scope creep	Clear requirements, phased approach
Timeline delays	Buffer time, prioritization
Technical debt	Code reviews, refactoring sprints
Knowledge silos	Documentation, pair programming

---

Resources

Documentation

• React Documentation
• TypeScript Handbook
• D3.js Documentation
• N3.js Documentation
• Zustand Documentation
• React Query Documentation
• Vite Documentation
• Vitest Documentation
• Playwright Documentation

Reference Projects

• /Users/kempersc/apps/example_ld - Original implementation
• RDF visualization examples
• D3.js example gallery

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Notes

• This checklist is living document - update as needed
• Mark items complete as you finish them
• Add notes for complex items
• Link to relevant pull requests or commits
• Update timeline if needed
• Celebrate milestones!

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Last Updated: 2025-11-22
Version: 1.0
Status: Ready to begin implementation