docs: drop "coding" from agent description and prefix /plugin commands with claude

Reword "AI coding agents" / "AI 코딩 에이전트" to "AI agents" /
"AI 에이전트" everywhere it appeared — these skills target Korean
writing, not coding specifically. Files touched: README.md,
README_EN.md, AGENTS.md, .claude-plugin/marketplace.json.

Also prefix the Claude Code plugin install examples with `claude` so
the command works pasted straight into a regular terminal:
  claude /plugin marketplace add daleseo/korean-skills
  claude /plugin install korean-skills@korean-skills

Author: DaleSeo

.claude-plugin/marketplace.json

@@ -5,7 +5,7 @@
     "url": "https://github.com/DaleSeo"
   },
   "metadata": {
-    "description": "Korean language skills for AI coding agents: humanizer, grammar-checker, style-guide",
+    "description": "Korean language skills for AI agents: humanizer, grammar-checker, style-guide",
     "version": "1.0.0"
   },
   "plugins": [

AGENTS.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Repository Overview
 
-This repository provides Korean language skills for AI coding agents (Claude Code, Cursor, Windsurf, etc.) that support the Agent Skills format. Each skill is a self-contained module with documentation, reference materials, and examples.
+This repository provides Korean language skills for AI agents (Claude Code, Cursor, Windsurf, etc.) that support the Agent Skills format. Each skill is a self-contained module with documentation, reference materials, and examples.
 
 ## Repository Structure
 

README.md

@@ -1,13 +1,13 @@
 # 한국어 스킬
 
-> AI 코딩 에이전트를 위한 한국어 스킬 모음
+> AI 에이전트를 위한 한국어 스킬 모음
 
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Skills](https://img.shields.io/badge/skills-3-green.svg)](#스킬)
 
 **[English](./README_EN.md)** 🇺🇸
 
-Claude Code, Cursor, Windsurf 등 Agent Skills 형식을 지원하는 AI 코딩 에이전트에서 사용할 수 있는 한국어 특화 스킬을 제공합니다.
+Claude Code, Cursor, Windsurf 등 Agent Skills 형식을 지원하는 AI 에이전트에서 사용할 수 있는 한국어 특화 스킬을 제공합니다.
 
 ## 빠른 시작
 
@@ -31,14 +31,14 @@ npx skills add daleseo/korean-skills@style-guide
 
 먼저 마켓플레이스를 추가합니다.
 
-```
-/plugin marketplace add daleseo/korean-skills
+```bash
+claude /plugin marketplace add daleseo/korean-skills
 ```
 
 그다음 플러그인을 설치합니다.
 
-```
-/plugin install korean-skills@korean-skills
+```bash
+claude /plugin install korean-skills@korean-skills
 ```
 
 설치하면 다음 슬래시 명령어로 각 스킬을 호출할 수 있습니다.
@@ -81,7 +81,7 @@ gh skill preview daleseo/korean-skills
 | `gh skill install daleseo/korean-skills <name>` | 가장 최근 태그 릴리스 |
 | `gh skill install daleseo/korean-skills <name> --pin v1.0.0` | 특정 릴리스 고정 (자동 업데이트 제외) |
 | `npx skills add daleseo/korean-skills@<name>` | `main` 최신 콘텐츠 (태그 없음) |
-| Claude Code 플러그인 (`/plugin install`) | 최신 플러그인 버전 |
+| Claude Code 플러그인 (`claude /plugin install`) | 최신 플러그인 버전 |
 
 안정성이 필요하면 `gh skill install … --pin vX.Y.Z`로 고정하세요. 고정된 스킬은 `gh skill upgrade` 대상에서 제외되므로 의도적으로만 업그레이드됩니다. 최신 콘텐츠가 필요하면 다른 경로들이 `main` HEAD를 그대로 추적합니다.
 

README_EN.md

@@ -1,13 +1,13 @@
 # Korean Skills
 
-> Korean language skills for AI coding agents
+> Korean language skills for AI agents
 
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Skills](https://img.shields.io/badge/skills-3-green.svg)](#skills)
 
 **[한국어 문서](./README.md)** 🇰🇷
 
-This repository provides Korean language skills for AI coding agents (Claude Code, Cursor, Windsurf, etc.) supporting the Agent Skills format.
+This repository provides Korean language skills for AI agents (Claude Code, Cursor, Windsurf, etc.) supporting the Agent Skills format.
 
 ## Quick Start
 
@@ -31,14 +31,14 @@ You can also install the skills as a [Claude Code plugin](https://code.claude.co
 
 First, add the marketplace:
 
-```
-/plugin marketplace add daleseo/korean-skills
+```bash
+claude /plugin marketplace add daleseo/korean-skills
 ```
 
 Then, install the plugin:
 
-```
-/plugin install korean-skills@korean-skills
+```bash
+claude /plugin install korean-skills@korean-skills
 ```
 
 Once installed, the skills are available as namespaced slash commands:
@@ -81,7 +81,7 @@ Releases are tagged with semver and published automatically whenever `.claude-pl
 | `gh skill install daleseo/korean-skills <name>` | Latest tagged release |
 | `gh skill install daleseo/korean-skills <name> --pin v1.0.0` | Pinned to a specific release (skipped during updates) |
 | `npx skills add daleseo/korean-skills@<name>` | Latest content from `main` (no tag) |
-| Claude Code plugin (`/plugin install`) | Latest plugin version |
+| Claude Code plugin (`claude /plugin install`) | Latest plugin version |
 
 If you need stability, pin via `gh skill install … --pin vX.Y.Z`. Pinned skills are skipped during `gh skill upgrade`, so you upgrade deliberately. For the freshest content, the other paths track `main` HEAD directly.