Politician Performance Scorecards with Trend Charts (Vaadin 8)

[pethers]

🎯 Objective

Create Vaadin 8 politician performance scorecard with temporal trend visualizations (daily/weekly/monthly/annual)

📋 Background

The platform has 20+ vote summary views at different temporal granularities (daily, weekly, monthly, annual) but lacks integrated UI showing politician performance over time. Need scorecard with KPIs and trend charts.

📊 Current State (Measured Metrics)

• Politician Views: 5+ performance tracking views
• Temporal Granularities: 4 levels (daily, weekly, monthly, annual)
• Current UI: Basic politician profile page with static tables
• Trend Visualization: None - no temporal charts

✅ Acceptance Criteria

• Vaadin 8 scorecard component with key performance metrics (voting record, document productivity, committee activity)
• Multi-timeframe trend charts showing performance evolution
• Comparison view vs party average and historical data
• Export functionality (PDF/CSV) for scorecard data
• Integration with existing politician profile pages

📚 Related Documentation

• view_riksdagen_politician_ballot_summary
• view_riksdagen_vote_data_ballot_politician_summary_daily/weekly/monthly/annual