MST HUD Statusline Installer

What it does

This skill replaces the Claude Code status line command with an MST HUD wrapper script (scripts/mst-statusline.sh). It safely backs up the existing ~/.claude/settings.json statusLine.command to a backup file and atomically writes the updated settings to point at the wrapper. The result is an MST-style HUD statusline that can show model prefixes and improved HUD behavior.

When to use it

Use when you want to install or enable the MST HUD wrapper for Claude Code — e.g., when a user asks for 'HUD 설치', 'statusline 설치', or invokes '/mst:hud-install'. It's appropriate for local developer environments where modifying ~/.claude/settings.json is acceptable and the wrapper script is present in the plugin directory.

What's included

• Scripts: wrapper reference (scripts/mst-statusline.sh) — the skill expects this script to exist in the plugin root.
• References: in-file example Bash+Python snippet showing backup and atomic write flow.
• Instructions: step-by-step protocol to locate settings, create a backup if needed, update statusLine.type/command, and atomically write files. The SKILL.md also documents PLUGIN_ROOT semantics for locating the wrapper.

Compatible agents

Best suited to Claude Code / Claude-compatible agents that expose a ~/.claude/settings.json statusLine.command. The guidance is generalizable to agents that support file-based statusline configuration.