Sync latest code from src/shared/gateway-sdk/ into packages/sdk/,
update all backend imports to use @multica/sdk, and remove the
duplicate src/shared/gateway-sdk/ directory.
- Translate Chinese comments to English in SDK source
- Fix package.json exports with default condition
- Add @multica/sdk as workspace dependency for backend
- Update imports in gateway, test-client, and hub
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add pnpm workspace and Turborepo configuration
- Extract Gateway SDK to packages/sdk as independent package
- Add Next.js + shadcn Web client in apps/web
- Update root package.json with turbo scripts
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
