docs: Add release notes for v2.0.0

RELEASE_NOTES.md

@@ -0,0 +1,39 @@
+## What's Changed
+
+### Features
+
+- Sync all documentation with Claude Code February 2026 features (487c96d)
+  - Update 26 files across all 10 tutorial directories and 7 reference documents
+  - Add documentation for **Auto Memory** — persistent learnings per project
+  - Add documentation for **Remote Control**, **Web Sessions**, and **Desktop App**
+  - Add documentation for **Agent Teams** (experimental multi-agent collaboration)
+  - Add documentation for **MCP OAuth 2.0**, **Tool Search**, and **Claude.ai Connectors**
+  - Add documentation for **Persistent Memory** and **Worktree Isolation** for subagents
+  - Add documentation for **Background Subagents**, **Task List**, **Prompt Suggestions**
+  - Add documentation for **Sandboxing** and **Managed Settings** (Enterprise)
+  - Add documentation for **HTTP Hooks** and 7 new hook events
+  - Add documentation for **Plugin Settings**, **LSP Servers**, and Marketplace updates
+  - Add documentation for **Summarize from Checkpoint** rewind option
+  - Document 17 new slash commands (`/fork`, `/desktop`, `/teleport`, `/tasks`, `/fast`, etc.)
+  - Document new CLI flags (`--worktree`, `--from-pr`, `--remote`, `--teleport`, `--teammate-mode`, etc.)
+  - Document new environment variables for auto memory, effort levels, agent teams, and more
+
+### Design
+
+- Redesign logo to compass-bracket mark with minimal palette (20779db)
+
+### Bug Fixes / Corrections
+
+- Update model names: Sonnet 4.5 → **Sonnet 4.6**, Opus 4.5 → **Opus 4.6**
+- Fix permission mode names: replace fictional "Unrestricted/Confirm/Read-only" with actual `default`/`acceptEdits`/`plan`/`dontAsk`/`bypassPermissions`
+- Fix hook events: remove fictional `PreCommit`/`PostCommit`/`PrePush`, add real events (`SubagentStart`, `WorktreeCreate`, `ConfigChange`, etc.)
+- Fix CLI syntax: replace `claude-code --headless` with `claude -p` (print mode)
+- Fix checkpoint commands: replace fictional `/checkpoint save/list/rewind/diff` with actual `Esc+Esc` / `/rewind` interface
+- Fix session management: replace fictional `/session list/new/switch/save` with real `/resume`/`/rename`/`/fork`
+- Fix plugin manifest format: migrate `plugin.yaml` → `.claude-plugin/plugin.json`
+- Fix MCP config paths: `~/.claude/mcp.json` → `.mcp.json` (project) / `~/.claude.json` (user)
+- Fix documentation URLs: `docs.claude.com` → `docs.anthropic.com`; remove fictional `plugins.claude.com`
+- Remove fictional configuration fields across multiple files
+- Update all "Last Updated" dates to February 2026
+
+**Full Changelog**: https://github.com/luongnv89/claude-howto/compare/20779db...v2.0.0