Add 5 plugins: sun-tzu-strategist, cloud-bridge, devpilot-tui, shield-scan, code-sensei

[Layton2617]

Summary

Adding 5 open-source Claude Code plugins/skills to the awesome list:

• sun-tzu-strategist → Backend & Architecture — Art of War strategic reasoning engine for real business & tech decisions. 5-step analysis framework, 3 interaction modes, bilingual CN/EN.
• cloud-bridge → DevOps & Performance — Multi-cloud deployment status checker across Vercel, Cloudflare, AWS, Fly.io, Netlify.
• shield-scan → Documentation & Security — AI-powered security scanner with SAST, secret detection, dependency analysis.
• devpilot-tui → Developer Productivity — Multi-agent context handoff between Claude Code, Gemini CLI, and Codex.
• code-sensei → Developer Productivity — Transforms codebases into structured learning courses with exercises.

All plugins are MIT-licensed, tested, and follow the standard Claude Code plugin structure.

Checklist

• Each plugin addresses a real use case
• No duplication with existing entries
• Added to appropriate category sections
• All repos are public and accessible