- heatmap: show user contribution heatmap with optional --year flag
- stats: show user development statistics with optional --start-time/--end-time
- trends: show user project trends
- includes 11 new unit tests covering normal paths, parameter validation, and HTTP error handling
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add 18 new test files covering formatter, envelope, config, auth,
client, context, register, and all shortcut group packages.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>