docs(ko): Translate full documentation, guides, and templates to Korean

[minhee-seo]

Description

This PR introduces a comprehensive Korean translation (ko/ directory) for the entire project, including slash commands, persistent context examples, skills, subagents, advanced features, CLI references, and the contributing guidelines.

The goal of this translation is to help Korean developers adopt Claude Code more easily and use this guide effectively in their daily workflows.

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Changes Made

• Created a dedicated ko/ directory that mirrors the complete English documentation structure.
• Translated all Markdown documentation in:
  • 01-slash-commands/
  • 02-memory/
  • 03-skills/
  • 04-subagents/
  • 05-mcp/
  • 06-hooks/
  • 07-plugins/
  • 08-checkpoints/
  • 09-advanced-features/
  • 10-cli/
• Translated the following top-level documentation:
  • README.md
  • LEARNING-ROADMAP.md
  • QUICK_REFERENCE.md
  • CHANGELOG.md
  • SECURITY.md
  • CONTRIBUTING.md

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What to Review

Please review the following:

• Overall translation quality, consistency, and readability throughout the ko/ directory.
• Correctness of relative document paths and internal Markdown anchors (especially in ko/README.md and ko/LEARNING-ROADMAP.md).
• General formatting and Markdown rendering.

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Files Changed

• All files under the newly created ko/ directory.

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Additional Notes

As a developer who has benefited greatly from this project, I wanted to make these excellent guides more accessible to the Korean community.

I spent considerable time carefully translating the documentation while also verifying Markdown rendering, internal links, relative paths, and anchor references to ensure the localized version behaves consistently with the original documentation.

I hope this contribution helps more Korean developers discover and effectively use Claude Code. Thank you for creating and maintaining such a valuable project.

[luongnv89]

Hi @minhee-seo — this is awesome, thank you for putting in the work! Translating the entire tutorial (all 10 modules plus the top-level docs) is no small task, and it shows — links, anchors, and formatting all check out, and CI is green. Really appreciate you doing this for the Korean community. 🙏

Only one thing standing between this and merging: the repo moved from v2.1.160 to v2.1.206 while this PR was open (via #151), and that sync tweaked a few things in English that this translation predates. Nothing wrong with your work — just a bit of catching up needed:

• Version badges/footers — still say v2.1.160 in a few spots (e.g. ko/README.md:15); current is v2.1.206.
• Permission mode rename — "default" → "manual" (v2.1.200) in ko/09-advanced-features/README.md and a few other files.
• /agents wizard section — that command was removed in v2.1.198, so ko/04-subagents/README.md (around line 331) needs updating to match — English now just says to ask Claude or edit .claude/agents/ directly.
• A few new bits from v2.1.206 — /dataviz skill, ${CLAUDE_PROJECT_DIR}, Claude Sonnet 5 — that aren't in the translation yet.

Easiest path: git fetch origin main && git rebase origin/main, then touch up the ~15 files #151 changed (mostly small diffs, not full rewrites). Happy to pull out the exact section-by-section diff from #151 if that'd save you some digging — just say the word!

— @luongnv89