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/update-browserslist-db/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "update-browserslist-db",
+  "version": "1.2.3",
+  "description": "CLI tool to update caniuse-lite to refresh target browsers from Browserslist config",
+  "keywords": [
+    "caniuse",
+    "browsers",
+    "target"
+  ],
+  "funding": [
+    {
+      "type": "opencollective",
+      "url": "https://opencollective.com/browserslist"
+    },
+    {
+      "type": "tidelift",
+      "url": "https://tidelift.com/funding/github/npm/browserslist"
+    },
+    {
+      "type": "github",
+      "url": "https://github.com/sponsors/ai"
+    }
+  ],
+  "author": "Andrey Sitnik <andrey@sitnik.ru>",
+  "license": "MIT",
+  "repository": "browserslist/update-db",
+  "types": "./index.d.ts",
+  "exports": {
+    ".": "./index.js",
+    "./package.json": "./package.json"
+  },
+  "dependencies": {
+    "escalade": "^3.2.0",
+    "picocolors": "^1.1.1"
+  },
+  "peerDependencies": {
+    "browserslist": ">= 4.21.0"
+  },
+  "bin": "cli.js"
+}