release: v3.29.2 - /simplify + /batch commands documentation
Added dedicated sections for the two bundled slash commands introduced in Claude Code v2.1.63: /simplify (over-engineering detection) and /batch (batch processing). Built-in Commands table updated in §1.3 and §6.1. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Florian BRUNIAUX
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@ -6,6 +6,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
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## [Unreleased]
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- **skills.sh security audits** (`guide/ultimate-guide.md` §Skills Marketplace) — nouvelle sous-section "Security Audits (February 2026)" : 3 partenaires indépendants (Socket analyse statique 97% F1, Snyk mcp-scan 0% faux positifs, Gen Agent Trust Hub monitoring continu), 4 niveaux de risque (Safe/Low/High/Critical), monitoring post-install, mental model "skill = dépendance exécutable". Trade-offs mis à jour : suppression warning "Early stage", ajout ✅ audits automatisés + monitoring continu. 3 références sources ajoutées (Vercel changelog, Snyk blog, Gen/PRNewswire). Source : [Vercel, 17 fév 2026](https://vercel.com/changelog/automated-security-audits-now-available-for-skills-sh).
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## [3.29.2] - 2026-03-02
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### Added
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- **`/simplify` command documentation** (`guide/ultimate-guide.md` §6.1) — section dédiée pour la commande bundlée v2.1.63 : description officielle (over-engineering, redundant abstractions), 3 dimensions analysées (reuse/quality/efficiency), exemples d'usage ciblé (`/simplify focus on error handling`), table de positionnement vs linters/formatters.
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- **`/batch` command documentation** (`guide/ultimate-guide.md` §6.1) — section dédiée pour la commande bundlée v2.1.63 : traitement de plusieurs éléments en une invocation.
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- **Table Built-in Commands mise à jour** — `/simplify` et `/batch` ajoutés §6.1 et §1.3. Sources : release notes GitHub officiel + Perplexity.
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## [3.29.1] - 2026-03-02
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### Added
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@ -6,7 +6,7 @@
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<p align="center">
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<a href="https://github.com/FlorianBruniaux/claude-code-ultimate-guide/stargazers"><img src="https://img.shields.io/github/stars/FlorianBruniaux/claude-code-ultimate-guide?style=for-the-badge" alt="Stars"/></a>
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<a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Mar_2,_2026_·_v3.29.1-brightgreen?style=for-the-badge" alt="Last Update"/></a>
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<a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Mar_2,_2026_·_v3.29.2-brightgreen?style=for-the-badge" alt="Last Update"/></a>
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<a href="./quiz/"><img src="https://img.shields.io/badge/Quiz-274_questions-orange?style=for-the-badge" alt="Quiz"/></a>
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<a href="./examples/"><img src="https://img.shields.io/badge/Templates-175-green?style=for-the-badge" alt="Templates"/></a>
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<a href="./guide/security-hardening.md"><img src="https://img.shields.io/badge/🛡️_Threat_DB-24_CVEs_·_655_malicious_skills-red?style=for-the-badge" alt="Threat Database"/></a>
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@ -846,7 +846,7 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md) for guidelines.
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---
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*Version 3.29.1 | Updated daily · Mar 2, 2026 | Crafted with Claude*
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*Version 3.29.2 | Updated daily · Mar 2, 2026 | Crafted with Claude*
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<!-- SEO Keywords -->
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<!-- claude code, claude code tutorial, anthropic cli, ai coding assistant, claude code mcp,
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2
VERSION
2
VERSION
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@ -1 +1 @@
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3.29.1
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3.29.2
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@ -12,7 +12,7 @@ tags: [cheatsheet, reference]
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**Written with**: Claude (Anthropic)
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**Version**: 3.29.1 | **Last Updated**: February 2026
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**Version**: 3.29.2 | **Last Updated**: February 2026
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---
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@ -606,4 +606,4 @@ where.exe claude; claude doctor; claude mcp list
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**Author**: Florian BRUNIAUX | [@Méthode Aristote](https://methode-aristote.fr) | Written with Claude
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*Last updated: February 2026 | Version 3.29.1*
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*Last updated: February 2026 | Version 3.29.2*
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@ -16,7 +16,7 @@ tags: [guide, reference, workflows, agents, hooks, mcp, security]
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**Last updated**: January 2026
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**Version**: 3.29.1
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**Version**: 3.29.2
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---
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@ -4667,7 +4667,7 @@ The `.claude/` folder is your project's Claude Code directory for memory, settin
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| Personal preferences | `CLAUDE.md` | ❌ Gitignore |
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| Personal permissions | `settings.local.json` | ❌ Gitignore |
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### 3.29.1 Version Control & Backup
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### 3.29.2 Version Control & Backup
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**Problem**: Without version control, losing your Claude Code configuration means hours of manual reconfiguration across agents, skills, hooks, and MCP servers.
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@ -7369,9 +7369,32 @@ npx add-skill anthropics/claude-plugins-official # CLAUDE.md auditor + automati
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Full catalog: [skills.sh leaderboard](https://skills.sh/)
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#### Security Audits (February 2026)
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Vercel launched automated security scanning on every skills.sh skill ([announcement, Feb 17, 2026](https://vercel.com/changelog/automated-security-audits-now-available-for-skills-sh)), partnering with three independent security firms covering 60,000+ skills:
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| Partner | Method | Performance |
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|---------|--------|-------------|
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| **Socket** | Cross-ecosystem static analysis + LLM-based noise reduction (curl\|sh, obfuscation, exfiltration, suspicious deps) | 95% precision, 97% F1 |
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| **Snyk** | `mcp-scan` engine: LLM judges + deterministic rules, detects "toxic flows" between natural language and executable code | 90-100% recall, 0% false positives on legit skills |
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| **Gen (Agent Trust Hub)** | Real-time monitoring of connections in/out of agents to prevent data exfiltration and prompt injection | Continuous |
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**Risk levels** displayed on every skill page and shown before installation via `skills@1.4.0+`:
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| Rating | Meaning |
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|--------|---------|
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| ✅ Safe | Verified against security best practices |
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| 🟡 Low Risk | Minor risk indicators detected |
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| 🔴 High Risk | Significant security concerns |
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| ☠️ Critical | Severe or malicious behavior — hidden from search |
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**Continuous monitoring**: skills are re-evaluated as detection improves. If a repository becomes malicious after install, its rating updates automatically.
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> **Mental model**: treat a skill like a Docker image — it's an executable dependency, not a prompt. Verify the rating before installing in production.
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#### Status & Trade-offs
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**Status**: Very recent (launched Jan 21, 2026), rapid adoption but early stage
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**Status**: Launched Jan 21, 2026, security-audited since Feb 17, 2026 (Socket + Snyk + Gen)
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**Governance**: Community project by Vercel Labs (not official Anthropic). Skills contributed by Vercel, Anthropic, Supabase, and community members.
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@ -7379,8 +7402,9 @@ Full catalog: [skills.sh leaderboard](https://skills.sh/)
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- ✅ Centralized discovery + leaderboard (200+ skills)
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- ✅ One-command install (vs manual GitHub clone)
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- ✅ Format 100% compatible with this guide
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- ✅ Automated 3-layer security audit before installation
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- ✅ Continuous monitoring post-install
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- ⚠️ Multi-agent focus (not Claude Code specific)
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- ⚠️ Early stage (maturity to prove over time)
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- ⚠️ Skills require explicit invocation; agents only auto-invoke them ~56% of the time ([Gao, 2026](https://vercel.com/blog/agents-md-outperforms-skills-in-our-agent-evals)). For critical instructions, prefer always-loaded CLAUDE.md
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#### When to Use
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@ -7421,6 +7445,9 @@ cp -r /tmp/agent-skills/react-best-practices .claude/skills/
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#### References
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- [Vercel Changelog: Introducing Agent Skills](https://vercel.com/changelog/introducing-skills-the-open-agent-skills-ecosystem)
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- [Vercel Changelog: Automated security audits for skills.sh](https://vercel.com/changelog/automated-security-audits-now-available-for-skills-sh)
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- [Snyk Blog: Securing the Agent Skill Ecosystem](https://snyk.io/blog/snyk-vercel-securing-agent-skill-ecosystem/)
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- [Gen + Vercel: Agent Trust Hub partnership](https://www.prnewswire.com/news-releases/gen-and-vercel-partner-to-bring-independent-safety-verification-to-the-ai-skills-ecosystem-302691006.html)
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- [GitHub: vercel-labs/agent-skills](https://github.com/vercel-labs/agent-skills)
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- [Platform Claude Docs: Skill Best Practices](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices)
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- See also: [AI Ecosystem Guide](./ai-ecosystem.md) for complementary tools
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@ -7455,6 +7482,8 @@ Slash commands are shortcuts for common workflows.
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| `/status` | Show session info |
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| `/plan` | Enter Plan Mode |
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| `/rewind` | Undo changes |
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| `/simplify` | Review changed code and fix over-engineering |
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| `/batch` | Process multiple items efficiently |
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| `/insights` | Generate usage analytics report |
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| `/exit` | Exit Claude Code |
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@ -7706,6 +7735,53 @@ EOF
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> **Tip**: Run `/insights` monthly, `/status` per session, and `ccboard` weekly for comprehensive visibility.
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### The /simplify Command
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Added in v2.1.63, `/simplify` is a bundled slash command that reviews your recently changed code for over-engineering and redundant abstractions, then fixes the problems it finds.
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#### When to Use It
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Run it after finishing a feature, before opening a pull request:
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```bash
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# Review everything changed since last commit
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/simplify
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# Focus on a specific concern
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/simplify focus on error handling
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/simplify check for unnecessary dependencies
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/simplify look at the database query patterns
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```
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#### What It Does
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`/simplify` analyzes changed code for:
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- **Reuse** — duplicated logic that could be extracted
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- **Quality** — patterns that reduce readability or maintainability
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- **Efficiency** — algorithmic and structural improvements
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It operates at the architecture and structure level, not at the formatter or linter level. `/simplify` complements tools like ESLint or Prettier rather than replacing them.
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#### Positioning
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| Tool | Level | Fixes |
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|------|-------|-------|
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| Prettier | Formatting | Style, whitespace |
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| ESLint | Syntax rules | Simple patterns, unused vars |
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| `/simplify` | Architecture | Over-abstraction, duplication, design |
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> **Note**: `/simplify` is a bundled slash command (ships with Claude Code), not a custom skill you need to create. Available from v2.1.63+.
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### The /batch Command
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Also added in v2.1.63, `/batch` is a bundled slash command for processing multiple items efficiently in a single invocation.
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```bash
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/batch
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```
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> **Note**: Both `/simplify` and `/batch` are bundled slash commands that ship with Claude Code v2.1.63+. No configuration required.
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### Custom Commands
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You can create your own commands in `.claude/commands/`:
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@ -21820,4 +21896,4 @@ We'll evaluate and add it to this section if it meets quality criteria.
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**Contributions**: Issues and PRs welcome.
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**Last updated**: January 2026 | **Version**: 3.29.1
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**Last updated**: January 2026 | **Version**: 3.29.2
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@ -3,7 +3,7 @@
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# Source: guide/ultimate-guide.md
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# Purpose: Condensed index for LLMs to quickly answer user questions about Claude Code
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version: "3.29.1"
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version: "3.29.2"
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updated: "2026-02-26"
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# ════════════════════════════════════════════════════════════════
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@ -1415,7 +1415,7 @@ ecosystem:
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- "Cross-links modified → Update all 4 repos"
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history:
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- date: "2026-01-20"
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event: "Code Landing sync v3.29.1, 66 templates, cross-links"
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event: "Code Landing sync v3.29.2, 66 templates, cross-links"
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commit: "5b5ce62"
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- date: "2026-01-20"
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event: "Cowork Landing fix (paths, README, UI badges)"
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@ -1427,7 +1427,7 @@ ecosystem:
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onboarding_matrix_meta:
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version: "2.0.0"
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last_updated: "2026-02-05"
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aligned_with_guide: "3.29.1"
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aligned_with_guide: "3.29.2"
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changelog:
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- version: "2.0.0"
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date: "2026-02-05"
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@ -1455,7 +1455,7 @@ onboarding_matrix:
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core: [rules, sandbox_native_guide, commands]
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time_budget: "5 min"
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topics_max: 3
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note: "SECURITY FIRST - sandbox before commands (v3.29.1 critical fix)"
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note: "SECURITY FIRST - sandbox before commands (v3.29.2 critical fix)"
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beginner_15min:
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core: [rules, sandbox_native_guide, workflow, essential_commands]
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- default: agent_validation_checklist
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time_budget: "60 min"
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topics_max: 6
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note: "Dual-instance pattern for quality workflows (v3.29.1)"
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note: "Dual-instance pattern for quality workflows (v3.29.2)"
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learn_security:
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intermediate_30min:
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- default: permission_modes
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time_budget: "30 min"
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topics_max: 4
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note: "NEW goal (v3.29.1) - Security-focused learning path"
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note: "NEW goal (v3.29.2) - Security-focused learning path"
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power_60min:
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core: [sandbox_native_guide, mcp_secrets_management, security_hardening]
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core: [rules, sandbox_native_guide, workflow, essential_commands, context_management, plan_mode]
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time_budget: "60 min"
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topics_max: 6
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note: "Security foundation + core workflow (v3.29.1 sandbox added)"
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note: "Security foundation + core workflow (v3.29.2 sandbox added)"
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intermediate_120min:
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core: [plan_mode, agents, skills, config_hierarchy, git_mcp_guide, hooks, mcp_servers]
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