feat: migrate from Electron to Tauri v2

.env.example

@@ -0,0 +1,6 @@
+# GitHub OAuth Application Credentials
+# Create an OAuth app at https://github.com/settings/developers
+# Set the callback URL to: gitify://auth-callback
+
+OAUTH_CLIENT_ID=your_github_oauth_client_id
+OAUTH_CLIENT_SECRET=your_github_oauth_client_secret

CLAUDE.md

@@ -0,0 +1,134 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Overview
+
+Gitify is an Electron desktop application that displays GitHub notifications in the system tray. Built with React, TypeScript, and using pnpm for package management.
+
+## Development Commands
+
+### Setup and Installation
+```bash
+pnpm install  # Takes 2-3 minutes, requires timeout of 5+ minutes
+```
+
+### Building
+```bash
+pnpm build         # Full production build (30-35 seconds)
+pnpm watch         # Development mode with hot reload (15 seconds initial)
+pnpm start         # Run the Electron app (fails in headless environments)
+```
+
+### Code Quality and Testing
+```bash
+pnpm lint:check    # Check linting/formatting with Biome (<1 second)
+pnpm lint          # Auto-fix linting/formatting issues
+pnpm test          # Run Jest tests (60-70 seconds, timeout 30+ minutes)
+pnpm test -u       # Update Jest snapshots after UI changes
+pnpm tsc --noEmit  # TypeScript compilation check (5 seconds)
+```
+
+### Packaging
+```bash
+pnpm package:macos --publish=never   # macOS build
+pnpm package:win --publish=never     # Windows build  
+pnpm package:linux --publish=never   # Linux build
+```
+
+## Architecture
+
+### Process Structure
+- **Main process** (`src/main/`): Electron backend, system tray integration
+- **Renderer process** (`src/renderer/`): React frontend UI
+- **Preload scripts**: Secure IPC communication bridge
+- **Shared code** (`src/shared/`): Common utilities and types
+
+### Key Technologies
+- **Electron 38+**: Desktop framework with menubar integration
+- **React 19+**: UI with @primer/react components
+- **TypeScript 5+**: Strict typing throughout
+- **Webpack 5**: Multi-target bundling (main/preload/renderer)  
+- **Biome**: Unified linting and formatting
+- **Tailwind CSS**: Utility-first styling
+- **Jest + jsdom**: Testing framework
+
+### Core Functionality
+- **GitHub API integration** (`src/renderer/utils/api/`): Notification fetching
+- **OAuth authentication** (`src/renderer/utils/auth/`): GitHub login flow
+- **Notification management** (`src/renderer/hooks/useNotifications.ts`): Core logic
+- **Settings management** (`src/renderer/routes/Settings.tsx`): User preferences
+- **System tray** (`src/main/`): Cross-platform menubar integration
+
+## File Organization
+
+### Source Structure
+```
+src/
+├── main/           # Electron main process
+├── renderer/       # React UI application  
+│   ├── components/ # Reusable UI components
+│   ├── hooks/      # Custom React hooks
+│   ├── routes/     # Page-level components
+│   └── utils/      # Utilities and API clients
+└── shared/         # Cross-process shared code
+```
+
+### Configuration
+- `biome.json`: Linting rules with custom import grouping
+- `jest.config.ts`: Test configuration with jsdom environment
+- `config/`: Webpack configurations for each target
+- `tailwind.config.ts`: CSS framework configuration
+
+## Development Workflow
+
+### Pre-commit Validation
+Always run these before committing:
+```bash
+pnpm lint:check && pnpm tsc --noEmit && pnpm test
+```
+
+### Build Validation
+After changes, verify:
+1. Clean build succeeds: `rm -rf build && pnpm build`
+2. Check output files exist in `build/` directory
+3. File sizes are reasonable (main.js ~300KB, renderer.js ~2MB)
+
+### Development Mode
+1. Start watch mode: `pnpm watch` (leave running)
+2. Launch app: `pnpm start`
+3. Make changes, use `CmdOrCtrl+R` to reload
+
+## Important Constraints
+
+### Timing Expectations
+- Dependency install: 2-3 minutes (normal for Electron)
+- Full build: 30-35 seconds
+- Test suite: 60-70 seconds
+- TypeScript check: 5 seconds
+
+### Expected Behavior
+- **Electron in containers**: Will fail (expected in headless environments)
+- **Build warnings**: Some PostCSS/Tailwind warnings are normal
+- **Test snapshots**: May have some existing failures, focus on new changes
+- **Linting warnings**: Existing codebase has warnings, only fix your changes
+
+### Code Style
+- Uses Biome with custom import grouping (Node → React/Testing → Electron → Primer → Packages → Shared → Relative)
+- Single quotes for JavaScript, double quotes for JSX
+- 2-space indentation
+- No console usage in production code (`noConsole: "error"`)
+
+## Project Philosophy
+
+Gitify focuses on GitHub notification monitoring, not being a full GitHub client. Keep changes:
+- Simple and focused on core notification functionality
+- Consistent with existing @primer/react UI patterns
+- Cross-platform compatible (macOS, Windows, Linux)
+- Minimal complexity for edge cases
+
+## Node.js Requirements
+
+- Requires Node.js >=22 (check package.json engines)
+- Works with Node 20+ but shows warnings
+- Uses pnpm 10+ as package manager

biome.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://biomejs.dev/schemas/2.3.10/schema.json",
   "files": {
-    "includes": ["**", "!**/generated/**/*"]
+    "includes": ["**", "!**/src/utils/api/graphql/generated"]
   },
   "assist": {
     "actions": {