feat(plugin): reorganize compounding-engineering v2.0.0

Major restructure of the compounding-engineering plugin:

## Agents (24 total, now categorized)
- review/ (10): architecture-strategist, code-simplicity-reviewer,
  data-integrity-guardian, dhh-rails-reviewer, kieran-rails-reviewer,
  kieran-python-reviewer, kieran-typescript-reviewer,
  pattern-recognition-specialist, performance-oracle, security-sentinel
- research/ (4): best-practices-researcher, framework-docs-researcher,
  git-history-analyzer, repo-research-analyst
- design/ (3): design-implementation-reviewer, design-iterator,
  figma-design-sync
- workflow/ (6): bug-reproduction-validator, every-style-editor,
  feedback-codifier, lint, pr-comment-resolver, spec-flow-analyzer
- docs/ (1): ankane-readme-writer

## Commands (15 total)
- Moved workflow commands to commands/workflows/ subdirectory
- Added: changelog, create-agent-skill, heal-skill, plan_review,
  prime, reproduce-bug, resolve_parallel, resolve_pr_parallel

## Skills (11 total)
- Added: andrew-kane-gem-writer, codify-docs, create-agent-skills,
  dhh-ruby-style, dspy-ruby, every-style-editor, file-todos,
  frontend-design, git-worktree, skill-creator
- Kept: gemini-imagegen

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

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

plugins/compounding-engineering/skills/create-agent-skills/templates/simple-skill.md

@@ -0,0 +1,33 @@
+---
+name: {{SKILL_NAME}}
+description: {{What it does}} Use when {{trigger conditions}}.
+---
+
+<objective>
+{{Clear statement of what this skill accomplishes}}
+</objective>
+
+<quick_start>
+{{Immediate actionable guidance - what Claude should do first}}
+</quick_start>
+
+<process>
+## Step 1: {{First action}}
+
+{{Instructions for step 1}}
+
+## Step 2: {{Second action}}
+
+{{Instructions for step 2}}
+
+## Step 3: {{Third action}}
+
+{{Instructions for step 3}}
+</process>
+
+<success_criteria>
+{{Skill name}} is complete when:
+- [ ] {{First success criterion}}
+- [ ] {{Second success criterion}}
+- [ ] {{Third success criterion}}
+</success_criteria>