refactor: remove infinite canvas module and related components

- Deleted the `useImagePreloader` composable and its associated types.
- Removed the `useInfiniteCanvas` composable along with its types and constants.
- Eliminated the `index.ts` file for the infinite canvas module.
- Removed utility functions related to touch and video handling.
- Deleted the screenshots module and its functionality.
- Updated package.json to remove `capture-website` dependency.
- Added new images for documentation purposes.

package.json

@@ -31,7 +31,6 @@
     "@vercel/speed-insights": "^1.2.0",
     "@vueuse/motion": "^3.0.3",
     "better-sqlite3": "^12.2.0",
-    "capture-website": "^4.2.0",
     "eslint": "^9.0.0",
     "nuxt": "^4.1.0",
     "rehype-katex": "^7.0.1",