chore: initial monorepo scaffold + WDS Phase 1+2 artifacts

- Nx 22.7 monorepo (pnpm 11.1, TypeScript 5.9, Node 24)
- apps/api: NestJS 11 (CJS conforme CODING-RULES.md PGD-DB-004)
- apps/web: React 19 + Vite 8 (ESM)
- libs/shared/api-interface: Zod contract base
- Docker Compose dev: Postgres 18, Valkey 8, MinIO, Mailpit
- WDS artifacts:
  - design-artifacts/A-Product-Brief/ (5 docs canônicos + 16 dialogs)
  - design-artifacts/B-Trigger-Map/ (hub + 4 personas + feature impact)
- Stack canon: STACK.md v2.2 + CODING-RULES.md v2.0 + brand.md
- AGENTS.md + README.md como entrada para devs/agentes

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/api/src/app/app.controller.spec.ts

@@ -0,0 +1,21 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+describe('AppController', () => {
+  let app: TestingModule;
+
+  beforeAll(async () => {
+    app = await Test.createTestingModule({
+      controllers: [AppController],
+      providers: [AppService],
+    }).compile();
+  });
+
+  describe('getData', () => {
+    it('should return "Hello API"', () => {
+      const appController = app.get<AppController>(AppController);
+      expect(appController.getData()).toEqual({ message: 'Hello API' });
+    });
+  });
+});

apps/api/src/app/app.controller.ts

@@ -0,0 +1,12 @@
+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getData() {
+    return this.appService.getData();
+  }
+}

apps/api/src/app/app.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+@Module({
+  imports: [],
+  controllers: [AppController],
+  providers: [AppService],
+})
+export class AppModule {}

apps/api/src/app/app.service.spec.ts

@@ -0,0 +1,20 @@
+import { Test } from '@nestjs/testing';
+import { AppService } from './app.service';
+
+describe('AppService', () => {
+  let service: AppService;
+
+  beforeAll(async () => {
+    const app = await Test.createTestingModule({
+      providers: [AppService],
+    }).compile();
+
+    service = app.get<AppService>(AppService);
+  });
+
+  describe('getData', () => {
+    it('should return "Hello API"', () => {
+      expect(service.getData()).toEqual({ message: 'Hello API' });
+    });
+  });
+});

apps/api/src/app/app.service.ts

@@ -0,0 +1,8 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  getData(): { message: string } {
+    return { message: 'Hello API' };
+  }
+}

apps/api/src/main.ts

@@ -0,0 +1,19 @@
+/**
+ * This is not a production server yet!
+ * This is only a minimal backend to get started.
+ */
+
+import { Logger } from '@nestjs/common';
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app/app.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  const globalPrefix = 'api';
+  app.setGlobalPrefix(globalPrefix);
+  const port = process.env.PORT || 3000;
+  await app.listen(port);
+  Logger.log(`🚀 Application is running on: http://localhost:${port}/${globalPrefix}`);
+}
+
+bootstrap();