feat: 重组为标准 skill 包结构 + 修复 verify.sh bash 3.2 兼容

- 新增 .claude/skills/new-project/SKILL.md（标准 skill 格式）
- install-skill.sh 安装时组装 SKILL.md + verify.sh，单一源无重复
- verify.sh 改用索引数组替代 declare -A，兼容 macOS bash 3.2
- log_pass/log_skip 显式 return 0，避免 set -e 下非 verbose 误退出
- README 改为 skill 优先；补全 copier.yml/scripts/template 入库

template/frontend/package.json.jinja

@@ -0,0 +1,43 @@
+{
+  "name": "{{ project_slug }}-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "lint": "eslint src",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest",
+    "test:run": "vitest run"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "zustand": "^5.0.0",
+    "@tanstack/react-query": "^5.0.0",
+    "zod": "^3.23.0",
+    "sonner": "^1.5.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.3.0",
+    "@types/react-dom": "^18.3.0",
+    "@vitejs/plugin-react": "^4.3.0",
+    "vite": "^5.4.0",
+    "typescript": "^5.5.0",
+    "eslint": "^9.11.0",
+    "@typescript-eslint/eslint-plugin": "^8.7.0",
+    "@typescript-eslint/parser": "^8.7.0",
+    "eslint-plugin-react-hooks": "^5.1.0",
+    "eslint-plugin-react-refresh": "^0.4.0",
+    "prettier": "^3.3.0",
+    "vitest": "^2.1.0",
+    "@testing-library/react": "^16.0.0",
+    "@testing-library/jest-dom": "^6.5.0",
+    "@vitest/coverage-v8": "^2.1.0",
+    "tailwindcss": "^3.4.0",
+    "autoprefixer": "^10.4.0",
+    "postcss": "^8.4.0",
+    "jsdom": "^25.0.0"
+  }
+}