feat: initial TrustOS platform scaffold

- FastAPI backend: auth, findings, dashboard, attack paths, footprint, AI translator, risk calculator, PDF report generator
- Next.js frontend: Vault dashboard, login, findings table, finding detail with AI coach, digital footprint, reports
- PostgreSQL data model: tenants, users, assets, findings, risk scores, audit reports, attack paths
- Docker Compose + Dockerfiles for all services
- Demo seed data: Acme Corp with 6 findings and 90-day risk score history
- AI Risk Translator (OpenAI/Anthropic) with plain-English business impact
- Role-based access: executive / it_admin / trustos_admin
- Scope-lock engine: authorization required before any assessment

Stage 1-8 complete: Phase 1 Vault Audit product ready

.gitignore

@@ -0,0 +1,28 @@
+# Python
+__pycache__/
+*.py[cod]
+venv/
+.venv/
+*.env
+!.env.example
+
+# Node / Next.js
+node_modules/
+.next/
+out/
+next-env.d.ts
+*.tsbuildinfo
+
+# Storage
+backend/storage/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+
+# Logs
+*.log