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/templates/instructions/responsive.instructions.md

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+# Responsive Behavior
+
+**Include when:** Page needs different layouts across breakpoints
+
+---
+
+## Breakpoints
+
+| Name | Range | Primary Use |
+|------|-------|-------------|
+| Mobile | < 768px | Touch, single column |
+| Tablet | 768px - 1024px | Touch/mouse, flexible |
+| Desktop | > 1024px | Mouse, multi-column |
+
+---
+
+## Mobile (< 768px)
+
+### Layout Changes
+- {What changes from desktop}
+
+### Hidden Elements
+- {Elements not shown on mobile}
+
+### Mobile-Specific
+- {Touch targets, gestures, etc.}
+
+---
+
+## Tablet (768px - 1024px)
+
+### Layout Changes
+- {What changes}
+
+### Adaptations
+- {Specific tablet behaviors}
+
+---
+
+## Desktop (> 1024px)
+
+### Full Layout
+- {Desktop-specific features}
+
+### Enhancements
+- {Hover states, keyboard shortcuts}
+
+---
+
+## Component Breakpoint Behavior
+
+| Component | Mobile | Tablet | Desktop |
+|-----------|--------|--------|---------|
+| `{component}` | {behavior} | {behavior} | {behavior} |
+
+---
+
+## Navigation Changes
+
+| Breakpoint | Navigation Style |
+|------------|------------------|
+| Mobile | {hamburger / bottom nav / etc.} |
+| Tablet | {style} |
+| Desktop | {full nav / sidebar / etc.} |