flufy v0.0.1

Added

• Browser engine with Chrome User-Agent spoofing to pass Slack's browser check
• System tray icon with unread message monitoring via DOM polling
• Desktop notifications via notify-send
• slack:// deep-link protocol handler for magic login links
• Single-instance enforcement via Unix domain socket IPC
• Persistent sessions (cookies survive restarts)
• User-configurable settings via TOML config file (~/.config/flufy/config.toml)
• Auto-generated .desktop file and protocol handler registration on first launch
• JS navigator overrides to improve Slack compatibility
• GitHub Actions CI workflow with markdown linter and conventional commits check
• Interactive release script for tagging, building, and publishing to PyPI