feat: turbostarter boilerplate

Production-ready Next.js boilerplate with:
- Runtime env validation (fail-fast on missing vars)
- Feature-gated config (S3, Stripe, email, OAuth)
- Docker + Coolify deployment pipeline
- PostgreSQL + pgvector, MinIO S3, Better Auth
- TypeScript strict mode (no ignoreBuildErrors)
- i18n (en/es), AI modules, billing, monitoring

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/cms/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "@turbostarter/cms",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "scripts": {
+    "build": "content-collections build",
+    "clean": "git clean -xdf .cache .turbo dist node_modules",
+    "dev": "content-collections watch",
+    "format": "prettier --check . --ignore-path ../../.gitignore",
+    "lint": "eslint",
+    "typecheck": "tsc --noEmit"
+  },
+  "prettier": "@turbostarter/prettier-config",
+  "dependencies": {
+    "@content-collections/core": "0.11.1",
+    "@turbostarter/shared": "workspace:*",
+    "reading-time": "1.5.0",
+    "zod": "catalog:"
+  },
+  "devDependencies": {
+    "@content-collections/cli": "0.1.7",
+    "@content-collections/mdx": "0.2.2",
+    "@shikijs/rehype": "3.14.0",
+    "@turbostarter/eslint-config": "workspace:*",
+    "@turbostarter/prettier-config": "workspace:*",
+    "@turbostarter/tsconfig": "workspace:*",
+    "concurrently": "9.2.1",
+    "eslint": "catalog:",
+    "prettier": "catalog:",
+    "typescript": "catalog:"
+  }
+}