Red LAN Sync Dashboard v0.1.1

Dock shortcut and repo architecture update.\n\n- Added a shared Red LAN Sync app icon for the web console and macOS Dock shortcut.\n- Added a Pairing-page Dock shortcut card with one-click install/refresh action.\n- Updated the macOS Dock installer to apply the bundled .icns icon.\n- Preserved deployed config.json and runtime-state.json when reinstalling the Mac service.\n- Added the repo architecture update rule to README, CONTRIBUTING, and architecture docs.\n- Kept documentation bilingual in Chinese and English.