- Add `VITE_ENABLE_LOCAL_SWAP` env var to config.ts (defaults false)
- Create LocalSwapWidget.vue: inline ETH→KRK swap (wrap→approve→exactInputSingle)
- GetKrkView.vue: show LocalSwapWidget when VITE_ENABLE_LOCAL_SWAP=true, Uniswap link otherwise
- docker-compose.yml: set VITE_ENABLE_LOCAL_SWAP=true for webapp service
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>