feat(sprint-5.5): add NestJS API, BlockMetaBar, block components + fix Vercel build

- Add vercel.json to build only apps/web (fix Vercel build failure)
- NestJS API: BlocksModule, BlocksController, BlocksService with Prisma 7
- PostgreSQL migration: Block model (path, version, isInPreview)
- BlockMetaBar component: inline version edit, API fetch with offline fallback
- New block components: CeoBlock, ContactFormsBlock, FooterBlock, NewsBlock, ReviewsBlock
- PreviewClient: fetch isInPreview from API, block visibility toggle
- Pages updated: hero, doctors, ceo, contact-forms, contact, news, reviews
- docker-compose: PostgreSQL on port 5434

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/prisma/migrations/20260323120441_add_block_model/migration.sql

@@ -0,0 +1,53 @@
+-- CreateEnum
+CREATE TYPE "Role" AS ENUM ('viewer', 'editor');
+
+-- CreateEnum
+CREATE TYPE "ComponentStatus" AS ENUM ('draft', 'review', 'approved');
+
+-- CreateTable
+CREATE TABLE "User" (
+    "id" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "passwordHash" TEXT NOT NULL,
+    "role" "Role" NOT NULL DEFAULT 'viewer',
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "User_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "ExperimentalComponent" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "baseComponent" TEXT NOT NULL,
+    "attributes" JSONB NOT NULL,
+    "status" "ComponentStatus" NOT NULL DEFAULT 'draft',
+    "authorId" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "ExperimentalComponent_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Block" (
+    "id" TEXT NOT NULL,
+    "path" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "version" TEXT NOT NULL,
+    "isInPreview" BOOLEAN NOT NULL DEFAULT false,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Block_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Block_path_key" ON "Block"("path");
+
+-- AddForeignKey
+ALTER TABLE "ExperimentalComponent" ADD CONSTRAINT "ExperimentalComponent_authorId_fkey" FOREIGN KEY ("authorId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

apps/api/prisma/migrations/migration_lock.toml

@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "postgresql"

apps/api/prisma/schema.prisma

@@ -1,6 +1,5 @@
 generator client {
-  provider = "prisma-client"
-  output   = "../generated/prisma"
+  provider = "prisma-client-js"
 }
 
 datasource db {
@@ -40,3 +39,13 @@ model ExperimentalComponent {
   createdAt     DateTime        @default(now())
   updatedAt     DateTime        @updatedAt
 }
+
+model Block {
+  id          String   @id @default(uuid())
+  path        String   @unique
+  name        String
+  version     String
+  isInPreview Boolean  @default(false)
+  updatedAt   DateTime @updatedAt
+  createdAt   DateTime @default(now())
+}

apps/api/prisma/seed.ts

@@ -0,0 +1,35 @@
+import 'dotenv/config';
+import { PrismaPg } from '@prisma/adapter-pg';
+import { PrismaClient } from '@prisma/client';
+
+const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
+const prisma = new PrismaClient({ adapter });
+
+const BLOCKS = [
+  { path: '/components/navigation', name: 'Шапка / Навигация', version: 'v1.0', isInPreview: true },
+  { path: '/blocks/hero', name: 'Hero-баннер', version: 'v1.1', isInPreview: true },
+  { path: '/blocks/ceo', name: 'Вводный текст (CEO-блок)', version: 'v0.1', isInPreview: false },
+  { path: '/blocks/doctors', name: 'Наши врачи', version: 'v1.1', isInPreview: true },
+  { path: '/blocks/reviews', name: 'Отзывы', version: 'v0.1', isInPreview: false },
+  { path: '/blocks/contact-forms', name: 'Формы записи', version: 'v0.1', isInPreview: false },
+  { path: '/blocks/news', name: 'Новости', version: 'v0.1', isInPreview: false },
+  { path: '/blocks/contact', name: 'Подвал / Контакт', version: 'v0.1', isInPreview: false },
+];
+
+async function main() {
+  for (const block of BLOCKS) {
+    await prisma.block.upsert({
+      where: { path: block.path },
+      update: {},
+      create: block,
+    });
+  }
+  console.log(`Seeded ${BLOCKS.length} blocks`);
+}
+
+main()
+  .catch((e) => {
+    console.error(e);
+    process.exit(1);
+  })
+  .finally(() => prisma.$disconnect());