what is oneforall-skill-manager fr?

Oneforall Skill Manager is a small Node.js tool with a web dashboard for installing and managing AI agent skills, which are instruction sets written as SKILL.md files. It targets four agent platforms at once: Claude Code, Antigravity, Open Design, and Codex. Normally, adding a custom skill to one of these tools means manually copying a folder into a hidden system directory, such as the Claude skills folder or the Codex skills folder, and doing it again for every other tool you use. This project replaces that manual copying with a single interface where you paste in a skill source and pick where it should go. It accepts several kinds of input: a Git repository URL, a direct GitHub link to a SKILL.md file, a raw.githubusercontent.com link, a local file path, or even raw markdown text pasted directly with its YAML frontmatter. The dashboard detects which kind of input it received and shows a preview before installing. You can install to a single target at a time, or flip a toggle to select multiple agent platforms and install to all of them in one action. Installed skills can be edited directly in a built in editor that understands the YAML frontmatter and instruction text, with a keyboard shortcut to save changes. Skills that came from a Git repository show an update button that runs a git pull in the background to keep them current. The tool also includes an auto healing feature: when a cloned repository has the SKILL.md file nested inside subfolders instead of at the root, it detects this and restructures the files automatically so the skill installs correctly. Installation is done by cloning the repository and running the server locally with npm start or node installer.js, then opening a browser to localhost port 3000. A one click script is also provided for Windows users. A command line interface is available as well, for installing skills without opening the browser dashboard.