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/rollup/dist/es/parseAst.js

@@ -0,0 +1,12 @@
+/*
+  @license
+	Rollup.js v4.60.4
+	Thu, 14 May 2026 17:52:21 GMT - commit d311a84b0bb4d4a6f50d19ffd2c29cca28660c88
+
+	https://github.com/rollup/rollup
+
+	Released under the MIT License.
+*/
+import '../native.js';
+export { parseAst, parseAstAsync } from './shared/parseAst.js';
+import 'node:path';