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/js-tokens/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "js-tokens",
+  "version": "4.0.0",
+  "author": "Simon Lydell",
+  "license": "MIT",
+  "description": "A regex that tokenizes JavaScript.",
+  "keywords": [
+    "JavaScript",
+    "js",
+    "token",
+    "tokenize",
+    "regex"
+  ],
+  "files": [
+    "index.js"
+  ],
+  "repository": "lydell/js-tokens",
+  "scripts": {
+    "test": "mocha --ui tdd",
+    "esprima-compare": "node esprima-compare ./index.js everything.js/es5.js",
+    "build": "node generate-index.js",
+    "dev": "npm run build && npm test"
+  },
+  "devDependencies": {
+    "coffeescript": "2.1.1",
+    "esprima": "4.0.0",
+    "everything.js": "1.0.3",
+    "mocha": "5.0.0"
+  }
+}