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>

tsconfig.base.json

@@ -0,0 +1,33 @@
+{
+  "compilerOptions": {
+    "target": "ES2023",
+    "lib": ["ES2023", "DOM", "DOM.Iterable"],
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "moduleDetection": "force",
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noUncheckedIndexedAccess": true,
+    "noImplicitOverride": true,
+    "noFallthroughCasesInSwitch": true,
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "verbatimModuleSyntax": false,
+    "useDefineForClassFields": false,
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "incremental": true,
+    "composite": false,
+    "baseUrl": ".",
+    "paths": {
+      "@sar/api-interface": ["./libs/shared/api-interface/src/index.ts"]
+    }
+  },
+  "exclude": ["node_modules", "tmp", "dist", "build", ".nx"]
+}