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>

scripts/build-and-push.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Build Docker image locally and push to Gitea Container Registry
+# Usage: ./scripts/build-and-push.sh [tag]
+
+set -e
+
+# Configuration
+REGISTRY="192.168.1.3:3030"
+REPO="alezmad/turbostarter"
+TAG="${1:-latest}"
+IMAGE="${REGISTRY}/${REPO}:${TAG}"
+
+echo "🔨 Building Docker image: ${IMAGE}"
+docker build --platform linux/amd64 -t "${IMAGE}" .
+
+echo "📤 Pushing to Gitea registry..."
+docker push "${IMAGE}"
+
+echo "✅ Done! Image pushed: ${IMAGE}"
+echo ""
+echo "To deploy in Coolify, update the application to use:"
+echo "  Image: ${IMAGE}"