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

frontend/tailwind.config.ts

@@ -0,0 +1,45 @@
+import type { Config } from "tailwindcss";
+
+const config: Config = {
+  darkMode: "class",
+  content: [
+    "./src/pages/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/components/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/app/**/*.{js,ts,jsx,tsx,mdx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        // TrustOS brand palette
+        vault: {
+          black: "#0a0d14",
+          dark: "#1a1f2e",
+          titanium: "#2d3447",
+          surface: "#1e2336",
+          border: "#2d3447",
+          sapphire: "#3b82d4",
+          sapphireLight: "#60a5fa",
+          sapphireDim: "#1e3a5f",
+          crimson: "#dc2626",
+          crimsonDim: "#450a0a",
+          amber: "#d97706",
+          amberDim: "#451a03",
+          emerald: "#059669",
+          emeraldDim: "#052e16",
+          text: "#e2e8f0",
+          muted: "#64748b",
+          subtle: "#94a3b8",
+        },
+      },
+      fontFamily: {
+        sans: ["var(--font-inter)", "system-ui", "sans-serif"],
+      },
+      backgroundImage: {
+        "vault-gradient": "linear-gradient(135deg, #0a0d14 0%, #1a1f2e 100%)",
+      },
+    },
+  },
+  plugins: [],
+};
+
+export default config;