diff --git a/.claude/skills/self-assessment/SKILL.md b/.claude/skills/self-assessment/SKILL.md
index 8a45453..9a5632e 100644
--- a/.claude/skills/self-assessment/SKILL.md
+++ b/.claude/skills/self-assessment/SKILL.md
@@ -1,6 +1,6 @@
 ---
 name: self-assessment
-version: 2.1.1
+version: 2.2.0
 description: Comprehensive Claude Code self-assessment and learning path advisor. Runs a multi-category quiz covering 10 feature areas, produces a detailed skill profile with per-topic scores, identifies specific gaps, and generates a personalized learning path with prioritized next steps. Use when asked to "assess my level", "take the quiz", "find my level", "where should I start", "what should I learn next", "check my skills", "skill check", or "level up".
 ---
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 409314d..b939455 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,28 @@
 # Changelog
 
+## v2.2.0 — 2026-03-26
+
+### Documentation
+
+- Sync all tutorials and references with Claude Code v2.1.84 (f78c094) @luongnv89
+  - Update slash commands to 55+ built-in + 5 bundled skills, mark 3 deprecated
+  - Expand hook events from 18 to 25, add `agent` hook type (now 4 types)
+  - Add Auto Mode, Channels, Voice Dictation to advanced features
+  - Add `effort`, `shell` skill frontmatter fields; `initialPrompt`, `disallowedTools` agent fields
+  - Add WebSocket MCP transport, elicitation, 2KB tool cap
+  - Add plugin LSP support, `userConfig`, `${CLAUDE_PLUGIN_DATA}`
+  - Update all reference docs (CATALOG, QUICK_REFERENCE, LEARNING-ROADMAP, INDEX)
+- Rewrite README as landing-page-structured guide (32a0776) @luongnv89
+
+### Bug Fixes
+
+- Add missing cSpell words and README sections for CI compliance (93f9d51) @luongnv89
+- Add `Sandboxing` to cSpell dictionary (b80ce6f) @luongnv89
+
+**Full Changelog**: https://github.com/luongnv89/claude-howto/compare/v2.1.1...v2.2.0
+
+---
+
 ## v2.1.1 — 2026-03-13
 
 ### Bug Fixes
diff --git a/README.md b/README.md
index 35b6f49..6d2d124 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![GitHub Stars](https://img.shields.io/github/stars/luongnv89/claude-howto?style=flat&color=gold)](https://github.com/luongnv89/claude-howto/stargazers)
 [![GitHub Forks](https://img.shields.io/github/forks/luongnv89/claude-howto?style=flat)](https://github.com/luongnv89/claude-howto/network/members)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
-[![Version](https://img.shields.io/badge/version-2.1.1-brightgreen)](CHANGELOG.md)
+[![Version](https://img.shields.io/badge/version-2.2.0-brightgreen)](CHANGELOG.md)
 [![Claude Code](https://img.shields.io/badge/Claude_Code-2.1+-purple)](https://code.claude.com)
 
 # Master Claude Code in a Weekend
@@ -94,7 +94,7 @@ Run `/lesson-quiz [topic]` after each module. The quiz pinpoints what you missed
 
 - **1,100+ GitHub stars** from developers who use Claude Code daily
 - **78 forks** — teams adapting this guide for their own workflows
-- **Actively maintained** — synced with every Claude Code release (latest: v2.1.1, March 2026)
+- **Actively maintained** — synced with every Claude Code release (latest: v2.2.0, March 2026)
 - **Community-driven** — contributions from developers who share their real-world configurations
 
 [![Star History Chart](https://api.star-history.com/svg?repos=luongnv89/claude-howto&type=Date)](https://star-history.com/#luongnv89/claude-howto&Date)
@@ -191,7 +191,7 @@ cp -r 03-skills/code-review ~/.claude/skills/
 Yes. MIT licensed, free forever. Use it in personal projects, at work, in your team — no restrictions beyond including the license notice.
 
 **Is this maintained?**
-Actively. The guide is synced with every Claude Code release. Current version: v2.1.1 (March 2026), compatible with Claude Code 2.1+.
+Actively. The guide is synced with every Claude Code release. Current version: v2.2.0 (March 2026), compatible with Claude Code 2.1+.
 
 **How is this different from the official docs?**
 The official docs are a feature reference. This guide is a tutorial with diagrams, production-ready templates, and a progressive learning path. They complement each other — start here to learn, reference the docs when you need specifics.
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 1fd0667..8fac2cb 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,4 +1,4 @@
-## v2.1.1 — 2026-03-13
+## v2.2.0 — 2026-03-26
 
 ### Bug Fixes