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>

tooling/prettier/index.js

@@ -0,0 +1,29 @@
+/** @typedef {import("prettier").Config} PrettierConfig */
+/** @typedef {import("prettier-plugin-tailwindcss").PluginOptions} TailwindConfig */
+
+/** @type { PrettierConfig | TailwindConfig } */
+const config = {
+  singleQuote: false,
+  trailingComma: "all",
+  tabWidth: 2,
+  useTabs: false,
+  printWidth: 80,
+  plugins: ["prettier-plugin-tailwindcss"],
+  tailwindFunctions: ["cn", "cva"],
+  overrides: [
+    {
+      files: "*.json.hbs",
+      options: {
+        parser: "json",
+      },
+    },
+    {
+      files: "*.js.hbs",
+      options: {
+        parser: "babel",
+      },
+    },
+  ],
+};
+
+export default config;

tooling/prettier/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@turbostarter/prettier-config",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "exports": {
+    ".": "./index.js"
+  },
+  "scripts": {
+    "clean": "git clean -xdf .cache .turbo node_modules",
+    "format": "prettier --check . --ignore-path ../../.gitignore",
+    "typecheck": "tsc --noEmit"
+  },
+  "prettier": "@turbostarter/prettier-config",
+  "dependencies": {
+    "prettier": "catalog:",
+    "prettier-plugin-tailwindcss": "^0.7.1"
+  },
+  "devDependencies": {
+    "@turbostarter/tsconfig": "workspace:*",
+    "typescript": "catalog:"
+  }
+}

tooling/prettier/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "extends": "@turbostarter/tsconfig/base.json",
+  "include": ["."],
+  "exclude": ["node_modules"]
+}