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>

.claude/skills/wds-4-ux-design/data/modular-architecture/02-workflows/02-file-structure.md

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+# Storyboard File Structure
+
+**Where to store storyboards in the three-tier architecture**
+
+---
+
+## Storage Location
+
+```
+project-root/
+├─ Pages/
+│  └─ 02-calendar-page.md
+│
+├─ Components/
+│  └─ walk-slot-card.component.md
+│
+├─ Features/
+│  ├─ walk-booking-logic.feature.md
+│  └─ Storyboards/                    ← Store here
+│     ├─ walk-state-transitions.jpg
+│     ├─ booking-flow.jpg
+│     └─ calendar-sync-flow.jpg
+│
+└─ Sketches/                          ← Page sketches
+   └─ 02-calendar-page-sketch.jpg
+```
+
+---
+
+## Why Features/Storyboards/?
+
+Storyboards document **functionality**, not visual design:
+
+- State transitions (functional)
+- User interactions (functional)
+- Business logic flows (functional)
+
+Therefore, they belong with **Features**, not Components.
+
+---
+
+## Reference Pattern
+
+**From Feature File:**
+
+```markdown
+Features/walk-booking-logic.feature.md
+
+## Visual Storyboard
+
+![Walk State Transitions](Storyboards/walk-state-transitions.jpg)
+```
+
+**From Component File:**
+
+```markdown
+Components/walk-slot-card.component.md
+
+## Visual States
+
+See storyboard for state transitions:
+→ Features/Storyboards/walk-state-transitions.jpg
+```
+
+---
+
+## Separation from Page Sketches
+
+**Page Sketches** (Sketches/ folder):
+
+- Show page layout
+- Static view of entire page
+- Used during initial design
+
+**Storyboards** (Features/Storyboards/ folder):
+
+- Show component behavior
+- Sequential frames showing changes
+- Used during specification
+
+---
+
+## Next Steps
+
+- [Naming Conventions](02-naming-conventions.md)
+- [Feature File Integration](feature-file-integration.md)