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/@jridgewell/resolve-uri/README.md

@@ -0,0 +1,40 @@
+# @jridgewell/resolve-uri
+
+> Resolve a URI relative to an optional base URI
+
+Resolve any combination of absolute URIs, protocol-realtive URIs, absolute paths, or relative paths.
+
+## Installation
+
+```sh
+npm install @jridgewell/resolve-uri
+```
+
+## Usage
+
+```typescript
+function resolve(input: string, base?: string): string;
+```
+
+```js
+import resolve from '@jridgewell/resolve-uri';
+
+resolve('foo', 'https://example.com'); // => 'https://example.com/foo'
+```
+
+| Input                 | Base                    | Resolution                     | Explanation                                                  |
+|-----------------------|-------------------------|--------------------------------|--------------------------------------------------------------|
+| `https://example.com` | _any_                   | `https://example.com/`         | Input is normalized only                                     |
+| `//example.com`       | `https://base.com/`     | `https://example.com/`         | Input inherits the base's protocol                           |
+| `//example.com`       | _rest_                  | `//example.com/`               | Input is normalized only                                     |
+| `/example`            | `https://base.com/`     | `https://base.com/example`     | Input inherits the base's origin                             |
+| `/example`            | `//base.com/`           | `//base.com/example`           | Input inherits the base's host and remains protocol relative |
+| `/example`            | _rest_                  | `/example`                     | Input is normalized only                                     |
+| `example`             | `https://base.com/dir/` | `https://base.com/dir/example` | Input is joined with the base                                |
+| `example`             | `https://base.com/file` | `https://base.com/example`     | Input is joined with the base without its file               |
+| `example`             | `//base.com/dir/`       | `//base.com/dir/example`       | Input is joined with the base's last directory               |
+| `example`             | `//base.com/file`       | `//base.com/example`           | Input is joined with the base without its file               |
+| `example`             | `/base/dir/`            | `/base/dir/example`            | Input is joined with the base's last directory               |
+| `example`             | `/base/file`            | `/base/example`                | Input is joined with the base without its file               |
+| `example`             | `base/dir/`             | `base/dir/example`             | Input is joined with the base's last directory               |
+| `example`             | `base/file`             | `base/example`                 | Input is joined with the base without its file               |