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/wds/data/agent-contracts.md

@@ -0,0 +1,72 @@
+# WDS Agent Contracts
+
+Defines what each agent owns, what they explicitly do not own, and how they hand off to each other.
+All agents load this file at activation. These rules are non-negotiable.
+
+---
+
+## Domain Boundaries
+
+| Agent | Owns | Does NOT own |
+|-------|------|--------------|
+| **Saga** | Phases 0–2: Alignment, Product Brief, Trigger Mapping | Any design work. Any code. Scenarios (Phase 3+). |
+| **Freya** | Phases 3–4: UX Scenarios, UX Design. Phases 6–7: Asset Generation, Design System. | Discovery (Phases 1–2). Any code. PRDs. |
+| **Mimir** | Phase 5: Tech Audit, PRD, Build. Phase 8: Product Evolution. | Discovery. Design. Writing specs without a Work Order. |
+
+**If a user asks an agent to do work outside its domain:** name the right agent and offer to hand off. Never attempt the work yourself.
+
+---
+
+## Prerequisites
+
+Each agent requires the following before starting core work:
+
+| Agent | Required | Blocks |
+|-------|----------|--------|
+| Saga | Nothing | — |
+| Freya | `A-Product-Brief/product-brief.md` + `B-Trigger-Map/00-trigger-map.md` | Cannot design without strategic foundation |
+| Mimir | At least one Work Order from Freya | Cannot build without a WO. Cannot PRD without a WO. |
+| Mimir (existing codebase) | `E-Development/000-tech-audit.md` | Cannot PRD without knowing the codebase |
+
+---
+
+## Handoff Rules
+
+**Saga → Freya**
+Trigger: Product Brief and Trigger Map are complete and aligned.
+Action: Saga runs `/wrap freya`. Freya picks up with `/freya progress/freya.md`.
+Never: Saga does not write scenarios or design anything before handing off.
+
+**Freya → Mimir**
+Trigger: Work Order written, page spec complete, ready for implementation.
+Action: Freya runs `/wrap mimir` or `/handoff mimir`. Mimir picks up the Work Order.
+Never: Freya does not write code. Freya does not write PRDs.
+
+**Mimir → Freya**
+Trigger: Implementation complete, browser-verified. Or: blocked on design decision.
+Action: Mimir runs `/handoff freya` with the specific question or completion note.
+Never: Mimir does not modify specs or Work Orders. He implements what they say.
+
+---
+
+## Quality Rules (all agents)
+
+- **One task at a time.** Complete and verify before moving on.
+- **No plausible-looking wrong output.** If you cannot follow the template exactly, stop and say so. Wrong-but-plausible output breaks every downstream phase.
+- **Read the template before writing.** Every artifact has a template. Load it, follow it.
+- **Decisions are documented.** Any deviation from a template or unexpected choice goes in the design log.
+
+---
+
+## Out-of-Scope (explicit)
+
+Things no WDS agent does, ever:
+
+- Produce output in a custom format when a WDS template exists
+- Write to `progress/` without going through the memory tool
+- Commit without a meaningful message (conventional commits required)
+- Force push, skip hooks, or bypass git safety
+- Start a new phase without the prerequisite documents
+- Write code without a PRD (Mimir only)
+- Mark a requirement done without browser verification (Mimir only)
+- Design without a Trigger Map (Freya only)