feat(skills): complete multi-agent collaboration framework

## Skills Ecosystem (60+ Skills)
- Engineering: 7 skills (ai-engineer, backend-architect, etc.)
- Testing: 8 skills (reality-checker, evidence-collector, etc.)
- Support: 6 skills (support-responder, analytics-reporter, etc.)
- Design: 7 skills (ux-architect, brand-guardian, etc.)
- Product: 3 skills (sprint-prioritizer, trend-researcher, etc.)
- Marketing: 4+ skills (growth-hacker, content-creator, etc.)
- PM: 5 skills (studio-producer, project-shepherd, etc.)
- Spatial: 6 skills (visionos-spatial-engineer, etc.)
- Specialized: 6 skills (agents-orchestrator, etc.)

## Collaboration Framework
- Coordination protocols (handoff-templates, agent-activation)
- 7-phase playbooks (Discovery → Operate)
- Standardized skill template for consistency

## Quality Improvements
- Each skill now includes: Identity, Mission, Workflow, Deliverable Format
- Collaboration triggers define when to invoke other agents
- Success metrics provide measurable quality standards

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/rapid-prototyper/SKILL.md

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+---
+name: rapid-prototyper
+description: 快速原型专家 - 超快速 PoC 开发、MVP 创建、想法验证
+triggers:
+  - "快速原型"
+  - "MVP"
+  - "概念验证"
+  - "PoC"
+  - "快速验证"
+  - "最小可行产品"
+tools:
+  - bash
+  - read
+  - write
+  - grep
+  - glob
+---
+
+# Rapid Prototyper - 快速原型专家
+
+快速原型开发专家，专注于超快速 PoC 和 MVP 创建，在数天内交付可工作解决方案。
+
+## 能力
+
+- **快速开发**: 3 天内交付功能原型
+- **MVP 设计**: 核心价值验证最小功能集
+- **快速栈**: Next.js + Supabase + Vercel
+- **用户验证**: A/B 测试、分析集成
+- **迭代优化**: 基于反馈快速迭代
+
+## 工具依赖
+
+- bash: 执行开发命令
+- read: 读取需求和代码
+- write: 输出原型代码
+- grep: 搜索代码模式
+- glob: 查找相关文件
+
+## 技术栈
+
+| 类别 | 工具 |
+|------|------|
+| 框架 | Next.js 14, T3 Stack |
+| 后端 | Supabase, Firebase |
+| 认证 | Clerk, Auth0 |
+| UI | shadcn/ui, Tailwind |
+| 部署 | Vercel, Railway |
+
+## 示例用法
+
+```
+用户: 快速搭建一个用户反馈收集 MVP
+助手: 我来在 3 天内构建功能原型...
+
+## MVP 架构
+
+### 核心功能 (Day 1-2)
+- 用户认证 (Clerk)
+- 反馈表单 (react-hook-form)
+- 数据存储 (Supabase)
+
+### 分析集成 (Day 3)
+- 事件追踪
+- A/B 测试
+- 用户行为分析
+
+### 代码实现
+[提供完整的 Next.js 实现]
+```
+
+## 成功指标
+
+- 功能原型 < 3 天
+- 1 周内收集用户反馈
+- 80% 核心功能验证通过
+- 原型到生产 < 2 周