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/bmad-prd/assets/headless-schemas.md

@@ -0,0 +1,76 @@
+# Headless Mode JSON Schemas
+
+Every headless run ends with one of these payloads. Omit keys for artifacts not produced.
+
+## Common fields
+
+- `status` — `"complete"`, `"blocked"`, or `"partial"`
+- `intent` — `"create"`, `"update"`, or `"validate"` (matches the detected intent)
+- `reason` — required when `status` is `"blocked"`; one-sentence explanation
+- `assumptions` — array of inferred values that were not directly confirmed by inputs
+- `open_questions` — array of items that need a human decision before the artifact can be considered final
+
+## Create
+
+```json
+{
+  "status": "complete",
+  "intent": "create",
+  "prd": "{doc_workspace}/prd.md",
+  "addendum": "{doc_workspace}/addendum.md",
+  "decision_log": "{doc_workspace}/.decision-log.md",
+  "open_questions": [],
+  "assumptions": [],
+  "external_handoffs": [
+    {"directive": "Confluence upload", "tool": "corp:confluence_upload", "url": "https://confluence.corp/PROD/123", "status": "ok"}
+  ]
+}
+```
+
+## Update
+
+```json
+{
+  "status": "complete",
+  "intent": "update",
+  "prd": "{doc_workspace}/prd.md",
+  "decision_log": "{doc_workspace}/.decision-log.md",
+  "changes_summary": "1-3 sentences describing what changed and why",
+  "conflicts_with_prior_decisions": [],
+  "open_questions": [],
+  "external_handoffs": [
+    {"directive": "Confluence upload", "tool": "corp:confluence_upload", "url": "https://confluence.corp/PROD/123", "status": "ok"}
+  ]
+}
+```
+
+## Validate
+
+```json
+{
+  "status": "complete",
+  "intent": "validate",
+  "validation_report": "{doc_workspace}/validation-report.md",
+  "findings_summary": {
+    "critical": 0,
+    "high": 0,
+    "medium": 0,
+    "low": 0
+  },
+  "offer_to_update": true
+}
+```
+
+`validation_report` is always written for Validate intent — the path here is required, not optional.
+
+## Blocked
+
+```json
+{
+  "status": "blocked",
+  "intent": "update",
+  "reason": "Change signal ambiguous — could be a scope expansion or a clarification; no inferred direction"
+}
+```
+
+Always include the intent (best-guess if not certain) and a one-sentence `reason`.