[2.10.0] Add agent-native reviewer and architecture skill

- Add agent-native-reviewer agent to verify features are agent-accessible
- Add agent-native-architecture skill for prompt-native design patterns
- Add agent-native-reviewer to /review command parallel agents
- Move agent-native skill to correct plugin folder
- Update component counts (25 agents, 12 skills)
- Include mermaid dark mode fix from PR #45

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -11,8 +11,8 @@
   "plugins": [
     {
       "name": "compound-engineering",
-      "description": "AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last. Includes 24 specialized agents, 19 commands, and 11 skills.",
-      "version": "2.9.0",
+      "description": "AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last. Includes 25 specialized agents, 19 commands, and 12 skills.",
+      "version": "2.10.0",
       "author": {
         "name": "Kieran Klaassen",
         "url": "https://github.com/kieranklaassen",