add typing to query params

[Dashron]

ideally this would allow you to define the typing, but this works for now without ripping up a lot

[Copilot]

Pull Request Overview

This PR improves type safety by adding explicit typing for query parameters in the RouterURL interface and updates the package version for an alpha release.

• Adds a generic type parameter to the parse() function's return type in RouterURL.
• Bumps the version number from alpha.6 to alpha.7 in package.json.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/middleware/router.ts	Adds explicit generic type for query parameters in RouterURL interface.
package.json	Updates the project version to reflect an alpha release bump.

Comments suppressed due to low confidence (1)

src/middleware/router.ts:28

• Consider adding a comment explaining why the generic type parameter (Record<string, string | number>) was introduced here to clarify the expected structure of query parameters.

export interface RouterURL extends ReturnType<typeof parse<Record<string, string | number>>> {