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>

apps/mobile/eslint.config.mjs

@@ -0,0 +1,11 @@
+import baseConfig from "@turbostarter/eslint-config/base";
+import reactConfig from "@turbostarter/eslint-config/react";
+
+/** @type {import('typescript-eslint').Config} */
+export default [
+  {
+    ignores: [".expo/**", "expo-plugins/**"],
+  },
+  ...baseConfig,
+  ...reactConfig,
+];