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Adaptive UI Based on User Expertise Level — Implementation Progress

✅ Phase 1: ML-Powered Expertise Classification Engine

Core Library

  • src/lib/expertiseEngine.ts — ML-powered classification engine with:
    • Isolation Forest integration for anomaly detection
    • Multi-signal weighted scoring (sessionDuration, featureUsage, taskCompletion, errorRate, shortcutUsage)
    • Growth trend tracking for level-up detection
    • Confidence scoring with configurable thresholds
    • Persistence via localStorage

Enhanced Signals

  • src/lib/expertiseAdaptation.ts — Updated from 4 basic signals to comprehensive:
    • featureUsageFrequency: Tracks how often features are used
    • taskCompletionRate: Ratio of completed vs failed tasks
    • errorRate: Error frequency tracking
    • shortcutUsageCount: Keyboard shortcut adoption
    • advancedFeatureAccessCount: Deep feature exploration
    • timeOnTask: Average time spent per task
    • Weighted scoring formula for accurate classification

Context Integration

  • src/context/ExpertiseContext.tsx — Enhanced with:
    • ExpertiseEngine integration for real-time classification
    • Growth tracking (level-up suggestions, readiness detection)
    • adaptationConfig for progressive disclosure settings
    • progressiveDisclosure state for feature gating
    • Confidence scores and trend data

✅ Phase 2: Tracking & Adaptive Component Hooks

Auto-Tracking Hook

  • src/hooks/useExpertiseTracking.ts — Automatic tracking of:
    • Feature interactions (click, navigation, tool usage)
    • Task completion and errors
    • Shortcut usage
    • Time-on-task measurement
    • Session duration monitoring
    • Debounced persistence to localStorage

Adaptive Components Hook

  • src/hooks/useAdaptiveComponents.ts — Component adaptation:
    • getAdaptation(componentId) — Returns visibility, behavior, simplified, locked, guidance config
    • sidebarAdaptation — Nav item visibility per expertise level
    • dashboardAdaptation — Widget visibility per expertise level
    • featureAdaptation — Feature-level gating
    • Breakpoint-specific adaptations (mobile, tablet, desktop)

✅ Phase 3: UI Components

Progressive Disclosure Wrapper

  • src/components/expertise/ProgressiveDisclosure.tsx — Conditional rendering:
    • minLevel prop for minimum expertise requirement
    • locked prop for manual override
    • simplified prop for novice-friendly version
    • Locked state with upgrade prompt
    • Guidance banner for novice users

Expertise Badge

  • src/components/expertise/ExpertiseBadge.tsx — Floating badge:
    • Level indicator with color coding (Novice=blue, Intermediate=amber, Expert=cyan)
    • Manual override dropdown (auto/novice/intermediate/expert)
    • Growth notification when level-up is available
    • Animated transitions
    • Accessible with ARIA attributes

Expertise Progress Panel

  • src/components/expertise/ExpertiseProgressPanel.tsx — Detailed progress view:
    • Signal breakdown with visual bars
    • Overall expertise score
    • Growth trend indicator
    • Level-up readiness meter
    • Next level requirements
    • Actionable suggestions for improvement

CSS Styles

  • src/styles/expertise.css — Adaptive UI styles:
    • Locked state overlay
    • Guided tooltip appearance for novice users
    • Level-specific theme adjustments
    • Badge animations
    • Growth indicator styling
    • Responsive/mobile adaptations
    • Reduced motion support

✅ Phase 4: Integration into Existing Components

DashboardLayout Integration

  • src/routes/DashboardLayout.tsx — Updated with:
    • Expertise tracking initialization
    • data-expertise attribute on <html> for CSS targeting
    • ExpertiseBadge in toolbar
    • ExpertiseProgressPanel modal
    • Session duration tracking

Sidebar Integration

  • src/components/layout/Sidebar.tsx — Updated with:
    • AdaptiveComponents hook for nav item filtering
    • Expertise tracking for feature interactions
    • ExpertiseBadge in sidebar footer
    • ExpertiseProgressPanel trigger

Remaining Work

DashboardGrid Integration

  • Filter widgets based on dashboardAdaptation config
  • Show locked/guided state for advanced widgets

Overview Component Integration

  • Use useAdaptiveComponents to show simplified vs detailed views
  • Add guidance banners for novice users

Testing

  • Unit tests for ExpertiseEngine
  • Unit tests for useExpertiseTracking
  • Integration tests for ExpertiseContext
  • E2E tests for adaptive UI behavior

Verification

  • Verify expertise detection is 80% accurate
  • Verify UI adaptations are appropriate
  • Verify manual override works
  • Verify system adapts to expertise growth