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/scenario-init/02-feature-selection.md

@@ -0,0 +1,70 @@
+# Question 1: What Feature Delivers the Most Value?
+
+**Connect Trigger Map to the first thing you should design**
+
+---
+
+## The Question
+
+```
+Agent: "Looking at your Trigger Map and prioritized feature list,
+        what's the core feature that delivers value to your
+        primary target group?
+
+        This is what we should sketch first."
+```
+
+---
+
+## Why This Matters
+
+Your Trigger Map already identified:
+
+- Primary target group
+- What triggers their need
+- What outcome they want
+
+**This question connects that to a specific feature to design.**
+
+---
+
+## Example: Dog Week
+
+**From Trigger Map:**
+
+- Target: Parents
+- Trigger: Family conflict over dog care
+- Outcome: Accountability without nagging
+
+**Feature Selection:**
+
+```
+Designer: "The family dog walk calendar - it solves the accountability
+           problem that causes conflict."
+```
+
+**Why this feature first:**
+
+- Directly addresses the trigger (conflict)
+- Serves the primary target group (parents)
+- Delivers the desired outcome (accountability)
+
+---
+
+## What Agent Captures
+
+```
+CORE FEATURE: Family dog walk calendar
+WHY: Solves accountability problem that causes family conflict
+TARGET: Parents (primary decision makers)
+```
+
+---
+
+## Next Question
+
+[Where does the user first encounter this?](02-entry-point.md)
+
+---
+
+[← Back to Guide](00-SCENARIO-INIT-GUIDE.md)