[FEATURE] Implement contributor dashboard with analytics

[ascender1729]

Description

Create a personalized dashboard showing user's contribution history, statistics, and recommendations.

Why Needed

• Track contribution progress
• Motivate continued contributions
• Personalized issue recommendations
• Gamification elements

Implementation Details

• Dashboard page/modal
• Contribution statistics (PRs, issues commented)
• Streak tracking
• Skill progression
• Recommended issues based on history

Features

1. Contribution Stats: PRs merged, issues closed
2. Activity Streak: Days of consecutive activity
3. Skills Chart: Languages/technologies worked on
4. Achievements: Badges for milestones
5. Recommendations: Issues matching skill level

Files to Create/Modify

• src/pages/dashboard.astro (or modal component)
• src/components/dashboard/StatsCard.svelte
• src/components/dashboard/StreakTracker.svelte
• src/components/dashboard/SkillsChart.svelte
• src/lib/contributor-stats.ts

Data Sources

• GitHub API for user activity
• Local storage for streak tracking
• Cached analysis for recommendations

Acceptance Criteria

• Dashboard accessible to logged-in users
• Contribution stats accurate
• Streak tracking works
• Recommendations are relevant
• Responsive design

Time Estimates

• With AI: 270 minutes
• Without AI: 1800 minutes