v0.3.0

• New: Insights page — a new sidebar entry showing your coding agent activity at a glance: sessions, tokens, prompts, agents, projects, and active days
• New: a GitHub-style heatmap charts your prompts day by day across the past year, with your current streak, longest streak, and busiest day
• New: activity breakdowns by hour, weekday, or month — flip between views with the arrows
• New: Agents, Projects, and Models leaderboards, each switchable between sessions, tokens, and prompts