feat: V1 prototype — Vite/React/TS tileset generator

- Scaffold: package.json, tsconfig.json, vite.config.ts, index.html
- src/lib/imageProcessor.ts: full pipeline (normalize, offset, seam repair, export, validation)
- src/components/UploadPanel.tsx: drag-and-drop, file picker, clipboard paste
- src/components/SettingsPanel.tsx: all controls per spec
- src/components/PreviewPanel.tsx: Original / Tileable / Repeated tabs
- src/components/ErrorBanner.tsx: dismissible error/warning banners
- src/App.tsx: root component wiring everything together
- src/index.css: dark premium glassmorphism theme w/ Inter font

node_modules/caniuse-lite/data/browsers.js

@@ -0,0 +1 @@
+module.exports={A:"ie",B:"edge",C:"firefox",D:"chrome",E:"safari",F:"opera",G:"ios_saf",H:"op_mini",I:"android",J:"bb",K:"op_mob",L:"and_chr",M:"and_ff",N:"ie_mob",O:"and_uc",P:"samsung",Q:"and_qq",R:"baidu",S:"kaios"};