[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>

plugins/compound-engineering/CHANGELOG.md

@@ -5,6 +5,21 @@ All notable changes to the compound-engineering plugin will be documented in thi
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.10.0] - 2025-12-10
+
+### Added
+
+- **`agent-native-reviewer` agent** - New review agent that verifies features are agent-native. Checks that any action a user can take, an agent can also take (Action Parity), and anything a user can see, an agent can see (Context Parity). Enforces the principle: "Whatever the user can do, the agent can do."
+- **`agent-native-architecture` skill** - Build AI agents using prompt-native architecture where features are defined in prompts, not code. Includes patterns for MCP tool design, system prompts, self-modification, and refactoring to prompt-native.
+
+### Changed
+
+- **`/review` command** - Added `agent-native-reviewer` to the parallel review agents. Code reviews now automatically check if new features are accessible to agents.
+
+### Fixed
+
+- **Documentation** - Fixed mermaid diagram legibility in dark mode by changing stroke color to white (PR #45 by @rickmanelius)
+
 ## [2.9.4] - 2025-12-08
 
 ### Changed