Fix TypeScript errors and code formatting

- Add 'href' property to Item interface in types.d.ts
- Remove unused imports from Logo.astro and index.astro
- Fix implicit 'any' type in utils/images.ts
- Run prettier formatting across all files

All TypeScript checks now pass with 0 errors, 0 warnings, and 0 hints.

package.json

@@ -64,4 +64,4 @@
     "typescript-eslint": "^8.30.1",
     "unist-util-visit": "^5.0.0"
   }
-}
+}