feat: initial app

[ramonclaudio]

Summary

• Gitbar — a menubar GitHub dashboard built with Tauri v2 + React 19
• Shows PRs, issues, repos, and activity in a single resizable-panel window
• Detail views with full markdown, comments, and reviews

Changes

Layer	Commit	Description
Config	chore(config)	Build tooling: Vite 7, Tailwind v4, TypeScript, shadcn/ui
Backend	feat(tauri)	Tauri v2 shell, Rust entry, capabilities, app icons
Data	feat(data)	GitHub GraphQL/REST API layer, mappers, hooks, utilities
UI	feat(ui)	20+ components, resizable panels, detail view, privacy toggle
Tests	test(hooks)	Unit tests for mappers, queries, time, review-badge
Docs	docs	MIT license, changelog, contributing guide
CI	ci	GitHub Actions workflow, issue/PR templates, demo asset

Impact

• Bundle: ~5MB native binary (Tauri)
• Breaking: N/A (initial release)
• Migrations: None