Feature: Update installed Skills using `boost:update` or similar

[wilsenhc]

I have been using Skills in Laravel Boost since it was introduced and it has been working great so far, until I wanted to update the Skills I installed using boost:add-skill.

Context

Using Vercel's Skills CLI I noticed with every installed Skill it introduces a file to keep track of Skills installed version and also it provides a npx skills update command.

Example of a skills-lock.json file:

{
  "version": 1,
  "skills": {
    "frontend-design": {
      "source": "anthropics/skills",
      "sourceType": "github",
      "computedHash": "063a0e6448123cd359ad0044cc46b0e490cc7964d45ef4bb9fd842bd2ffbca67"
    }
  }
}

Introducing a similar system to Laravel Boost will be very good addition since Boost already has the boost:add-skill command.

Boost could introduce a similar system but using the already existent boost.json file, and/or also create a skills-lock.json file for interoperability with the Vercel's Skills CLI.

And after introducing a system to keep track of installed Skills, with a source and installed version/hash/tag then introducing a Skills update step in boost:update and/or introduce a new boost:update-skills command that performs this action.