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>

_bmad/config.user.toml

@@ -0,0 +1,17 @@
+# ─────────────────────────────────────────────────────────────────
+# Installer-managed. Regenerated on every install — treat as read-only.
+# Holds install answers scoped to YOU personally.
+#
+# Direct edits to this file will be overwritten on the next install.
+# To change an answer durably, re-run the installer (your prior answers
+# are remembered as defaults). For pinned overrides or custom sections
+# the installer does not know about, use _bmad/custom/config.user.toml
+# — it is never touched by the installer.
+# ─────────────────────────────────────────────────────────────────
+
+[core]
+user_name = "Julian"
+communication_language = "Portugues Brasil"
+
+[modules.bmm]
+user_skill_level = "intermediate"