feat(template): ADR-013 Skill 替代脚本 — 框架脱敏/初始化机制重构

- 废弃 ADR-008 双分支+shell脚本方案（ai_project分支已过时）
- 新增 project-init Skill：export（脱敏导出） + init（初始化新项目）双模式
- 保留 SYNC.md（框架/项目边界）+ TEMPLATE.yaml（变量定义）
- L-006: 当 AI 是执行者时，Skill 优于 Shell 脚本
- 3 文件替代 4文件+1分支，零维护成本

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

TEMPLATE.yaml

@@ -0,0 +1,37 @@
+# ============================================================
+# 项目模板变量定义
+# 用于 project-init Skill 的 export/init 双向替换
+# ============================================================
+
+# --- 项目身份 ---
+PROJECT_NAME: "ErrLens"
+PROJECT_NAME_LOWER: "errlens"
+PROJECT_CONCEPT: "学生错题本"
+PROJECT_DESCRIPTION: "AI 驱动的学生错题整理与分析应用"
+
+# --- 子项目 P01（主应用）---
+P01_NAME: "P01_errlens_app"
+P01_DESC: "ErrLens 主应用"
+P01_FRONTEND: "Taro 4 + React 18 + TypeScript"
+P01_BACKEND: "NestJS 10 + TypeScript"
+
+# --- 子项目 P02（训练/AI）---
+P02_NAME: "P02_errlens_training"
+P02_DESC: "ErrLens AI 训练模块"
+
+# --- 子项目 P03（管理后台）---
+P03_NAME: "P03_errlens_web"
+P03_DESC: "ErrLens Web 管理后台"
+
+# --- 阶段定义 ---
+PHASE1_NAME: "基础搭建"
+PHASE1_GOAL: "搭建项目骨架：协作框架、脚手架、权限体系"
+PHASE2_NAME: "MVP"
+PHASE2_GOAL: "实现学生错题本核心功能"
+PHASE3_NAME: "功能完善"
+PHASE3_GOAL: "功能迭代、多端适配、性能优化"
+PHASE4_NAME: "打磨发布"
+PHASE4_GOAL: "质量提升、安全审计、文档完善"
+
+# --- 数据库 ---
+DATABASE_URL: "postgresql://user:password@localhost:5432/errlens"