Add gemini-imagegen skill and fix component counts

- Add gemini-imagegen skill for image generation with Gemini API
- Fix component counts: 17 agents (was 15), 6 commands, 1 skill
- Add comprehensive README documenting all components
- Add CHANGELOG tracking version history
- Bump version to 1.1.0

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

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

plugins/compounding-engineering/README.md

@@ -0,0 +1,76 @@
+# Compounding Engineering Plugin
+
+AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last.
+
+## Components
+
+- **17 Agents** - Specialized AI agents for code review, research, and analysis
+- **6 Commands** - Slash commands for common workflows
+- **1 Skill** - Image generation with Gemini API
+
+## Agents
+
+### Code Review
+- **kieran-rails-reviewer** - Rails code review with strict conventions
+- **kieran-python-reviewer** - Python code review with strict conventions
+- **kieran-typescript-reviewer** - TypeScript code review with strict conventions
+- **dhh-rails-reviewer** - Rails review from DHH's perspective
+- **code-simplicity-reviewer** - Final pass for simplicity and minimalism
+
+### Analysis & Research
+- **framework-docs-researcher** - Research framework documentation and best practices
+- **best-practices-researcher** - Gather external best practices and examples
+- **pattern-recognition-specialist** - Analyze code for patterns and anti-patterns
+- **repo-research-analyst** - Research repository structure and conventions
+- **git-history-analyzer** - Analyze git history and code evolution
+
+### Architecture & Security
+- **architecture-strategist** - Analyze architectural decisions and compliance
+- **security-sentinel** - Security audits and vulnerability assessments
+- **performance-oracle** - Performance analysis and optimization
+- **data-integrity-guardian** - Database migrations and data integrity
+
+### Workflow
+- **every-style-editor** - Edit content to conform to Every's style guide
+- **pr-comment-resolver** - Address PR comments and implement fixes
+- **feedback-codifier** - Codify feedback patterns into reviewer agents
+
+## Commands
+
+- **/review** - Run a comprehensive code review
+- **/plan** - Create an implementation plan
+- **/work** - Execute work items systematically
+- **/triage** - Triage issues and prioritize work
+- **/resolve_todo_parallel** - Resolve todos in parallel
+- **/generate_command** - Generate new slash commands
+
+## Skills
+
+### gemini-imagegen
+Generate and edit images using Google's Gemini API.
+
+**Features:**
+- Text-to-image generation
+- Image editing and manipulation
+- Multi-turn refinement
+- Multiple reference image composition
+
+**Requirements:**
+- `GEMINI_API_KEY` environment variable
+- Python packages: `google-genai`, `pillow`
+
+**Usage:**
+```bash
+python scripts/generate_image.py "A cat wearing a wizard hat" output.png
+python scripts/edit_image.py input.png "Add a rainbow" output.png
+```
+
+## Installation
+
+```bash
+claude /plugin install compounding-engineering
+```
+
+## License
+
+MIT