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>

.agents/skills/wds-4-ux-design/data/page-creation-flows/flow-a-sketch.md

@@ -0,0 +1,28 @@
+# Flow A: Sketch Path
+
+**Activates when:** User chooses to draw a sketch (physical/digital)
+
+---
+
+## Process
+
+<output>**Perfect! Let's set up for your sketch.**
+
+I'll create:
+1. Page placeholder with navigation
+2. Sketches folder ready for upload
+3. Basic page structure
+
+When you're ready, upload your sketch and we'll analyze it together using the Page Process Workshop.</output>
+
+---
+
+## Actions
+
+1. Run `page-init-lightweight.md` to create structure
+2. User uploads sketch when ready
+3. Return to `workshop-page-process.md` for analysis
+
+---
+
+**This is the preferred path - sketches capture design intent best.**